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'LEMUR CATTA' 
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Partager le résultat de cette recherche Interroger des sources externesAn ecological study of two Madagascar primates : Lemur fulvus rufus (audebert)and Lemus catta (linnaeus) / Sussman, Robert W.
Titre : An ecological study of two Madagascar primates : Lemur fulvus rufus (audebert)and Lemus catta (linnaeus) : *** Auteurs : Sussman, Robert W., Editeur : University Microfilms Année de publication : 1972 Importance : 278 p. Présentation : nb. ill., nb. tabl., nb. graph., nb. ref. Format : 20 cm Note générale : ECOLOGIE ANIMALE Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA LEMUR FULVUS RUFUS LEMUR CATTA PRIMATE Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 1 Bull1 (Theme principale) : ECOLOGIE ANIMALE An ecological study of two Madagascar primates : Lemur fulvus rufus (audebert)and Lemus catta (linnaeus) : *** [] / Sussman, Robert W., . - University Microfilms, 1972 . - 278 p. : nb. ill., nb. tabl., nb. graph., nb. ref. ; 20 cm.
ECOLOGIE ANIMALE
Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA LEMUR FULVUS RUFUS LEMUR CATTA PRIMATE Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 1 Bull1 (Theme principale) : ECOLOGIE ANIMALE Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité Origine 25748 596 (969 1)SUS Livre Academie Malgache Bibliotheque DDI Exclu du prêt
Titre : An ecological study of two Madagascar primates : Lemur fulvus rufus (audebert)and Lemus catta (linnaeus) : *** Auteurs : Sussman, Robert W., Editeur : University Microfilms Année de publication : 1972 Importance : 278 p. Présentation : nb. ill., nb. tabl., nb. graph., nb. ref. Format : 20 cm Note générale : ECOLOGIE ANIMALE Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA LEMUR FULVUS RUFUS LEMUR CATTA PRIMATE Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 1 Bull1 (Theme principale) : ECOLOGIE ANIMALE An ecological study of two Madagascar primates : Lemur fulvus rufus (audebert)and Lemus catta (linnaeus) : *** [] / Sussman, Robert W., . - University Microfilms, 1972 . - 278 p. : nb. ill., nb. tabl., nb. graph., nb. ref. ; 20 cm.
ECOLOGIE ANIMALE
Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA LEMUR FULVUS RUFUS LEMUR CATTA PRIMATE Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 1 Bull1 (Theme principale) : ECOLOGIE ANIMALE Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité Origine 26365 596 (969 1)SUS Livre Academie Malgache Bibliotheque DDI Exclu du prêt Communicative Variation and multimodality in Ring-Tailed Lemurs (Lemur catta) / Hilary Hager in LEMUR NEWS, 23 ([01/12/2021])
Titre : Communicative Variation and multimodality in Ring-Tailed Lemurs (Lemur catta) Type de document : texte imprimé Auteurs : Hilary Hager, Auteur ; Ian Colquhoun, Auteur Année de publication : 2021 Article en page(s) : p. 21-24 Langues : Anglais (eng) Catégories : LEMURIENS
SCIENCES DE LA VIE
SCIENCES DE L'ENVIRONNEMENTMots-clés : PRIMATE COMMUNICATION ANIMALE LEMUR CATTA MADAGASIKARA Index. décimale : 570 Sciences de la vie. Biologie Résumé : L'étude de la communication multimodale en primatologie ne s'est développée que récemment. À l'heure actuelle, l’on n’a pas connaissance d'études en cours sur la communication multimodale chez les lémuriens à queue annelée (Lemur catta), malgré l'ensemble des recherches sur cette espèce. Cette étude a examiné comment les différents modes sensoriels de la communication multimodale interindividuelle de L. catta sont socialement coordonnés et intégrés en examinant les fréquences d'occurrence de quatre facteurs biologiques et sociaux potentiels : l'âge, l'affiliation à une troupe, le sexe et le rang de dominance. La recherche a été menée pendant quatre mois (mai à août 2019) au Duke Lemur Center, Durham, Caroline du Nord, sur 14 individus de trois troupes distinctes de L. catta en semi-liberté. Les résultats démontrent une variation communicative des signaux unimodaux, mais pas des signaux multimodaux, qui sont corrélés au sexe et au rang chez cette espèce. Les femelles dominantes semblent utiliser plus fréquemment que les mâles des éléments de signaux visuels, tandis que les mâles s'appuient davantage sur des moyens de communication auditifs, ce qui correspond à l'organisation spatiale des troupes. Cette recherche fournit une base comparative pour de futures investigations sur la communication multimodale des primates. Note de contenu : The study of multimodal communication in primatology has increased only recently. At present, we are not aware of any on-going investigations of multimodal communication in ring-tailed lemurs (Lemur catta), despite the body of research on this species. This study investigated how different sensory modes of L. catta inter-individual multimodal communication are socially coordinated and integrated by examining frequencies of occurrence within four potential biological and social factors: age, troop affiliation, sex, and dominance rank. Research was conducted over four months (May to August 2019) at the Duke Lemur Center, Durham, NC, on 14 individuals from three separate troops of semi-free-ranging L. catta. Results demonstrate communicative variation in unimodal signals, but not multimodal signals, which correlate to sex and rank in this species. Dominant females appear to utilise visual signal components more frequently than males, while males rely more on auditory means of communicating, consistent with troop spatial organization. This research provides a comparative baseline for future investigations into primate multimodal communication. Numéro du document : 8 Bull1 (Theme principale) : SCIENCE DE LA VIE Bull2 (Theme secondaire) : ECOLOGIE ANIMALE Volume : 23 En ligne : http://www.primate-sg.org/storage/pdf/LN23.pdf
in LEMUR NEWS > 23 [01/12/2021] . - p. 21-24[article] Communicative Variation and multimodality in Ring-Tailed Lemurs (Lemur catta) [texte imprimé] / Hilary Hager, Auteur ; Ian Colquhoun, Auteur . - 2021 . - p. 21-24.
Langues : Anglais (eng)
in LEMUR NEWS > 23 [01/12/2021] . - p. 21-24
Catégories : LEMURIENS
SCIENCES DE LA VIE
SCIENCES DE L'ENVIRONNEMENTMots-clés : PRIMATE COMMUNICATION ANIMALE LEMUR CATTA MADAGASIKARA Index. décimale : 570 Sciences de la vie. Biologie Résumé : L'étude de la communication multimodale en primatologie ne s'est développée que récemment. À l'heure actuelle, l’on n’a pas connaissance d'études en cours sur la communication multimodale chez les lémuriens à queue annelée (Lemur catta), malgré l'ensemble des recherches sur cette espèce. Cette étude a examiné comment les différents modes sensoriels de la communication multimodale interindividuelle de L. catta sont socialement coordonnés et intégrés en examinant les fréquences d'occurrence de quatre facteurs biologiques et sociaux potentiels : l'âge, l'affiliation à une troupe, le sexe et le rang de dominance. La recherche a été menée pendant quatre mois (mai à août 2019) au Duke Lemur Center, Durham, Caroline du Nord, sur 14 individus de trois troupes distinctes de L. catta en semi-liberté. Les résultats démontrent une variation communicative des signaux unimodaux, mais pas des signaux multimodaux, qui sont corrélés au sexe et au rang chez cette espèce. Les femelles dominantes semblent utiliser plus fréquemment que les mâles des éléments de signaux visuels, tandis que les mâles s'appuient davantage sur des moyens de communication auditifs, ce qui correspond à l'organisation spatiale des troupes. Cette recherche fournit une base comparative pour de futures investigations sur la communication multimodale des primates. Note de contenu : The study of multimodal communication in primatology has increased only recently. At present, we are not aware of any on-going investigations of multimodal communication in ring-tailed lemurs (Lemur catta), despite the body of research on this species. This study investigated how different sensory modes of L. catta inter-individual multimodal communication are socially coordinated and integrated by examining frequencies of occurrence within four potential biological and social factors: age, troop affiliation, sex, and dominance rank. Research was conducted over four months (May to August 2019) at the Duke Lemur Center, Durham, NC, on 14 individuals from three separate troops of semi-free-ranging L. catta. Results demonstrate communicative variation in unimodal signals, but not multimodal signals, which correlate to sex and rank in this species. Dominant females appear to utilise visual signal components more frequently than males, while males rely more on auditory means of communicating, consistent with troop spatial organization. This research provides a comparative baseline for future investigations into primate multimodal communication. Numéro du document : 8 Bull1 (Theme principale) : SCIENCE DE LA VIE Bull2 (Theme secondaire) : ECOLOGIE ANIMALE Volume : 23 En ligne : http://www.primate-sg.org/storage/pdf/LN23.pdf
Titre : Ecologie de deux especes coexistantes de Lemur : Lemur catta et Lemur fulvus rufus : *** Auteurs : Sussman, Robert W., Editeur : Imprimerie Nationale Année de publication : 1976 Importance : p. 175-191 Note générale : ECOLOGIE ANIMALE Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA EJEDA BERENTY ANTSERANANOMBY TONGOMBATO LEMURIENS LEMUR CATTA LEMUR FULVUS RUFUS ECOLOGIE ANIMALE ETHOLOGIE DONNEES STATISTIQUES Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 3 Bull1 (Theme principale) : ECOLOGIE ANIMALE Ecologie de deux especes coexistantes de Lemur : Lemur catta et Lemur fulvus rufus : *** [] / Sussman, Robert W., . - Imprimerie Nationale, 1976 . - p. 175-191.
ECOLOGIE ANIMALE
Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA EJEDA BERENTY ANTSERANANOMBY TONGOMBATO LEMURIENS LEMUR CATTA LEMUR FULVUS RUFUS ECOLOGIE ANIMALE ETHOLOGIE DONNEES STATISTIQUES Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 3 Bull1 (Theme principale) : ECOLOGIE ANIMALE Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité Origine 25642 Livre Academie Malgache Bibliotheque DDI Exclu du prêt
Titre : Ecologie de deux especes coexistantes de Lemur : Lemur catta et Lemur fulvus rufus : *** Auteurs : Sussman, Robert W., Editeur : Imprimerie Nationale Année de publication : 1976 Importance : p. 175-191 Note générale : ECOLOGIE ANIMALE Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA EJEDA BERENTY ANTSERANANOMBY TONGOMBATO LEMURIENS LEMUR CATTA LEMUR FULVUS RUFUS ECOLOGIE ANIMALE ETHOLOGIE DONNEES STATISTIQUES Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 3 Bull1 (Theme principale) : ECOLOGIE ANIMALE Ecologie de deux especes coexistantes de Lemur : Lemur catta et Lemur fulvus rufus : *** [] / Sussman, Robert W., . - Imprimerie Nationale, 1976 . - p. 175-191.
ECOLOGIE ANIMALE
Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA EJEDA BERENTY ANTSERANANOMBY TONGOMBATO LEMURIENS LEMUR CATTA LEMUR FULVUS RUFUS ECOLOGIE ANIMALE ETHOLOGIE DONNEES STATISTIQUES Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 3 Bull1 (Theme principale) : ECOLOGIE ANIMALE Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité Origine 26259 Livre Academie Malgache Bibliotheque DDI Exclu du prêt
Titre : Population, espace vital et composition des groupes chez le Maki (Lemur catta)et le Sifaka (Propithecus verreauxi)a Berenty, Republique Malagasy : *** Auteurs : Alison, Jolly- Gustafson, Herbert- Mertl, Anne- Ramanantsoa, Guy, Editeur : Imprimerie Nationale Année de publication : 1977 Importance : p. 125-139 Note générale : ECOLOGIE ANIMALE Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA SIFAKA 1975 BERENTY ECOLOGIE ANIMALE ETHOLOGIE LEMUR CATTA PROPITHECUS VERREAUXI MAKI DONNEES STATISTIQUES Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 3 Indicateur Bibliographique : E Bull1 (Theme principale) : ECOLOGIE ANIMALE Population, espace vital et composition des groupes chez le Maki (Lemur catta)et le Sifaka (Propithecus verreauxi)a Berenty, Republique Malagasy : *** [] / Alison, Jolly- Gustafson, Herbert- Mertl, Anne- Ramanantsoa, Guy, . - Imprimerie Nationale, 1977 . - p. 125-139.
ECOLOGIE ANIMALE
Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA SIFAKA 1975 BERENTY ECOLOGIE ANIMALE ETHOLOGIE LEMUR CATTA PROPITHECUS VERREAUXI MAKI DONNEES STATISTIQUES Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 3 Indicateur Bibliographique : E Bull1 (Theme principale) : ECOLOGIE ANIMALE Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité Origine 25643 Livre Academie Malgache Bibliotheque DDI Exclu du prêt
Titre : Population, espace vital et composition des groupes chez le Maki (Lemur catta)et le Sifaka (Propithecus verreauxi)a Berenty, Republique Malagasy : *** Auteurs : Alison, Jolly- Gustafson, Herbert- Mertl, Anne- Ramanantsoa, Guy, Editeur : Imprimerie Nationale Année de publication : 1977 Importance : p. 125-139 Note générale : ECOLOGIE ANIMALE Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA SIFAKA 1975 BERENTY ECOLOGIE ANIMALE ETHOLOGIE LEMUR CATTA PROPITHECUS VERREAUXI MAKI DONNEES STATISTIQUES Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 3 Indicateur Bibliographique : E Bull1 (Theme principale) : ECOLOGIE ANIMALE Population, espace vital et composition des groupes chez le Maki (Lemur catta)et le Sifaka (Propithecus verreauxi)a Berenty, Republique Malagasy : *** [] / Alison, Jolly- Gustafson, Herbert- Mertl, Anne- Ramanantsoa, Guy, . - Imprimerie Nationale, 1977 . - p. 125-139.
ECOLOGIE ANIMALE
Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA SIFAKA 1975 BERENTY ECOLOGIE ANIMALE ETHOLOGIE LEMUR CATTA PROPITHECUS VERREAUXI MAKI DONNEES STATISTIQUES Résumé : - - - Note de contenu : - - - - - - Niveau Bibliographique : 3 Indicateur Bibliographique : E Bull1 (Theme principale) : ECOLOGIE ANIMALE Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité Origine 26260 Livre Academie Malgache Bibliotheque DDI Exclu du prêt Antipredator Vocalization Usage in the Male Ring-Tailed Lemur (Lemur catta) / Laura M. Bolt ; Michelle L. Sauther ; Frank P. Cuozzo ; Ibrahim Antho Youssouf Jacky
Titre : Antipredator Vocalization Usage in the Male Ring-Tailed Lemur (Lemur catta) Type de document : texte imprimé Auteurs : Laura M. Bolt ; Michelle L. Sauther ; Frank P. Cuozzo ; Ibrahim Antho Youssouf Jacky Année de publication : 2015 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : LEMURIENS
LEMURIENS:Menaces et PressionsMots-clés : MALE VOCALIZATION ANTIPREDATOR BEHAVIOR ALARM CALL VOCALIZATION RATE MALE DOMINANCE PREDATOR ABUNDANCE. PREDATOR CONFUSION HYPOTHESIS GROUP MAINTENANCE HYPOTHESIS PREDATION RISK ALLOCATION HYPOTHESIS LEMUR CATTA Résumé : The ring-tailed lemur (Lemur catta) is a group-living strepsirrhine primate endemic to Madagascar that faces considerable predation pressure from aerial and terrestrial predators. This species engages in mobbing and vigilance behavior in response to predators, and has referential alarm vocalizations. Because L. catta is female dominant, less is known about the alarm calls of males. We tested 3 hypotheses for male antipredator vocalization behavior on L. catta at the Bezà Mahafaly Special Reserve in Madagascar: the predator confusion, group maintenance, and predation risk allocation hypotheses. We found support for 2 hypotheses. When a male L. catta made an antipredator call, other group members vocalized in response. Dominant males did not make alarm calls at higher rates than subordinate males. Predators were more abundant on the western side of Parcel 1, but an even greater number of antipredator vocalizations occurred in this area than predator abundance warranted. We show that male L. catta consistently participated in group-level antipredator vocalization usage in high-risk locations. Although female L. catta are known to hold the primary role in group defense, male L. catta are also key participants in group-wide behaviors that may confuse or drive away predators. Titre du périodique : Folia Primatologica Volume : 86 : 124-133 En ligne : https://doi.org/10.1159/000369064 Antipredator Vocalization Usage in the Male Ring-Tailed Lemur (Lemur catta) [texte imprimé] / Laura M. Bolt ; Michelle L. Sauther ; Frank P. Cuozzo ; Ibrahim Antho Youssouf Jacky . - 2015.
Langues : Anglais (eng) Langues originales : Anglais (eng)
Catégories : LEMURIENS
LEMURIENS:Menaces et PressionsMots-clés : MALE VOCALIZATION ANTIPREDATOR BEHAVIOR ALARM CALL VOCALIZATION RATE MALE DOMINANCE PREDATOR ABUNDANCE. PREDATOR CONFUSION HYPOTHESIS GROUP MAINTENANCE HYPOTHESIS PREDATION RISK ALLOCATION HYPOTHESIS LEMUR CATTA Résumé : The ring-tailed lemur (Lemur catta) is a group-living strepsirrhine primate endemic to Madagascar that faces considerable predation pressure from aerial and terrestrial predators. This species engages in mobbing and vigilance behavior in response to predators, and has referential alarm vocalizations. Because L. catta is female dominant, less is known about the alarm calls of males. We tested 3 hypotheses for male antipredator vocalization behavior on L. catta at the Bezà Mahafaly Special Reserve in Madagascar: the predator confusion, group maintenance, and predation risk allocation hypotheses. We found support for 2 hypotheses. When a male L. catta made an antipredator call, other group members vocalized in response. Dominant males did not make alarm calls at higher rates than subordinate males. Predators were more abundant on the western side of Parcel 1, but an even greater number of antipredator vocalizations occurred in this area than predator abundance warranted. We show that male L. catta consistently participated in group-level antipredator vocalization usage in high-risk locations. Although female L. catta are known to hold the primary role in group defense, male L. catta are also key participants in group-wide behaviors that may confuse or drive away predators. Titre du périodique : Folia Primatologica Volume : 86 : 124-133 En ligne : https://doi.org/10.1159/000369064 Exemplaires
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Titre : Le chant de Lemur Catta : son role dans le defense du territoire et dans l'education des Americains Type de document : texte imprimé Auteurs : B Lala, Editeur : UICN Année de publication : 1988 Importance : p. 107-109 Présentation : 6 ref. Format : 24 cm Catégories : SCIENCES AGRICOLES Mots-clés : MADAGASIKARA LEMUR CATTA CHANT DU MAKI ESSAI D'INTERPRETATION PRIMATE ETIOLOGIE OBSERVATIONS SCIENTIFIQUES Niveau Bibliographique : 5 Indicateur Bibliographique : K; Z Bull1 (Theme principale) : ECOLOGIE ANIMALE Le chant de Lemur Catta : son role dans le defense du territoire et dans l'education des Americains [texte imprimé] / B Lala, . - UICN, 1988 . - p. 107-109 : 6 ref. ; 24 cm.
Catégories : SCIENCES AGRICOLES Mots-clés : MADAGASIKARA LEMUR CATTA CHANT DU MAKI ESSAI D'INTERPRETATION PRIMATE ETIOLOGIE OBSERVATIONS SCIENTIFIQUES Niveau Bibliographique : 5 Indicateur Bibliographique : K; Z Bull1 (Theme principale) : ECOLOGIE ANIMALE Exemplaires (1)
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Titre : Genetic tests of the taxonomic status of the ring-tailed lemur (Lemur catta) from the high mountain zone of the Andringitra Massif, Madagascar Type de document : texte imprimé Auteurs : Anne D. Yoder ; Jodi A. Irwin ; Goodman, Steven M. ; Soava V. Rakotoarisoa Année de publication : 2006 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : LEMURIENS
LEMURIENS:Génétique, Parasite, MaladieMots-clés : LEMUR CATTA MTDNA MADAGASCAR PRIMATES STREPSIRRHINI SPECIES IDENTIFICATION Résumé : A recent survey of the high-mountain zone of the Madagascar Parc National (PN) d'Andringitra revealed the presence of an apparently isolated troop of the ring-tailed lemur Lemur catta. These animals display phenotypic and ecological characteristics that are unusual for the monotypic genus Lemur, thus raising the possibility that they are members of a different undescribed species. We present analyses of two mitochondrial genes to test the hypothesis that L. catta from Andringitra should be considered a distinct species. The results indicate that taxonomic revision is not warranted under the expectations of the phylogenetic, coalescent, or biological species concepts. Rather, the genetic patterns observed among the Andringitra and lowland mitochondrial haplotypes are consistent with those expected for a single species. En ligne : https://doi.org/10.1111/j.1469-7998.2000.tb00814.x Genetic tests of the taxonomic status of the ring-tailed lemur (Lemur catta) from the high mountain zone of the Andringitra Massif, Madagascar [texte imprimé] / Anne D. Yoder ; Jodi A. Irwin ; Goodman, Steven M. ; Soava V. Rakotoarisoa . - 2006.
Langues : Anglais (eng) Langues originales : Anglais (eng)
Catégories : LEMURIENS
LEMURIENS:Génétique, Parasite, MaladieMots-clés : LEMUR CATTA MTDNA MADAGASCAR PRIMATES STREPSIRRHINI SPECIES IDENTIFICATION Résumé : A recent survey of the high-mountain zone of the Madagascar Parc National (PN) d'Andringitra revealed the presence of an apparently isolated troop of the ring-tailed lemur Lemur catta. These animals display phenotypic and ecological characteristics that are unusual for the monotypic genus Lemur, thus raising the possibility that they are members of a different undescribed species. We present analyses of two mitochondrial genes to test the hypothesis that L. catta from Andringitra should be considered a distinct species. The results indicate that taxonomic revision is not warranted under the expectations of the phylogenetic, coalescent, or biological species concepts. Rather, the genetic patterns observed among the Andringitra and lowland mitochondrial haplotypes are consistent with those expected for a single species. En ligne : https://doi.org/10.1111/j.1469-7998.2000.tb00814.x Exemplaires
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Titre : Group histories and offspring sex ratios in ringtailed lemurs (Lemur catta) Type de document : texte imprimé Auteurs : C. L. Nunn, Auteur ; Michael E. Pereira, Auteur Année de publication : 2000 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : LEMURIENS
LEMURIENS:Biologie, Ecologie, DensitéMots-clés : OFFSPRING SEX RATIONS FACULTATIVE ADJUSTMENT LOCAL RESOURCE ENHANCEMENT RINGTAILED LEMURS LEMUR CATTA Résumé : Birth sex ratios were examined for ringtailed lemurs (Lemur catta) at the Duke University Primate Center. This population provides a long-term database of births under a variety of demographic and management conditions, including two semi-freeranging groups between which males transfer freely and females defend stable territorial boundaries. We examined three hypotheses usually considered in studies of primate sex ratio bias. The Trivers-Willard hypothesis predicts that dominant females produce males, local resource competition at the population level (LRC-population) predicts that the dispersing sex (males) will be overproduced in dense populations, and local resource competition among individuals (LRC-individual) predicts that dominant females overproduce the philopatric sex (females). We also examined a fourth hypothesis, local resource enhancement (LRE), which is usually subsumed under LRC-individual in studies of primate sex ratio evolution. LRE predicts that under certain conditions, females will produce the sex that provides later cooperative benefits, such as alliance support for within- or between-group competition. Our data provide support for LRE: females overproduce daughters given prospects of new group formation, either through group fission or threatened expulsion of young mothers. Behavioral data from Duke and also wild populations show that daughters serve mothers as important allies in this context and LRE effects also have been documented in other mammals that experience similar group histories. Nonsignificant trends in the data supported the LRC-population hypothesis, and we suggest that LRC interacts with LRE to explain offspring sex ratios in ringtailed lemurs. Titre du périodique : Behavioral Ecology and Sociobiology volume Volume : 48: 18–28 En ligne : https://doi.org/10.1007/s002650000206 Group histories and offspring sex ratios in ringtailed lemurs (Lemur catta) [texte imprimé] / C. L. Nunn, Auteur ; Michael E. Pereira, Auteur . - 2000.
Langues : Anglais (eng) Langues originales : Anglais (eng)
Catégories : LEMURIENS
LEMURIENS:Biologie, Ecologie, DensitéMots-clés : OFFSPRING SEX RATIONS FACULTATIVE ADJUSTMENT LOCAL RESOURCE ENHANCEMENT RINGTAILED LEMURS LEMUR CATTA Résumé : Birth sex ratios were examined for ringtailed lemurs (Lemur catta) at the Duke University Primate Center. This population provides a long-term database of births under a variety of demographic and management conditions, including two semi-freeranging groups between which males transfer freely and females defend stable territorial boundaries. We examined three hypotheses usually considered in studies of primate sex ratio bias. The Trivers-Willard hypothesis predicts that dominant females produce males, local resource competition at the population level (LRC-population) predicts that the dispersing sex (males) will be overproduced in dense populations, and local resource competition among individuals (LRC-individual) predicts that dominant females overproduce the philopatric sex (females). We also examined a fourth hypothesis, local resource enhancement (LRE), which is usually subsumed under LRC-individual in studies of primate sex ratio evolution. LRE predicts that under certain conditions, females will produce the sex that provides later cooperative benefits, such as alliance support for within- or between-group competition. Our data provide support for LRE: females overproduce daughters given prospects of new group formation, either through group fission or threatened expulsion of young mothers. Behavioral data from Duke and also wild populations show that daughters serve mothers as important allies in this context and LRE effects also have been documented in other mammals that experience similar group histories. Nonsignificant trends in the data supported the LRC-population hypothesis, and we suggest that LRC interacts with LRE to explain offspring sex ratios in ringtailed lemurs. Titre du périodique : Behavioral Ecology and Sociobiology volume Volume : 48: 18–28 En ligne : https://doi.org/10.1007/s002650000206 Exemplaires
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Titre : Rapid decrease in populations of wild ring-tailed lemurs (Lemur catta) in Madagascar Type de document : texte imprimé Auteurs : M Lafleur ; T A Clarke ; K Reuter Année de publication : 2017 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : LEMURIENS
LEMURIENS:Biologie, Ecologie, DensitéMots-clés : BUSMEAT LEMUR CATTA RING TAILED LEMUR MADAGASCAR EXTTINCTION PET TRADE Résumé : Lemurs are the most threatened group of mammals on earth. Lemur catta (ring-tailed lemur) represents one of the most iconic lemur species and faces numerous anthropogenic threats in the wild. In this study, we present population estimates from 32 sites across the range of L. catta, collected from primary and secondary data sources, to assess the number of ring-tailed lemurs left in the wild. We estimate that there are approximately 2,220 individual L. catta remaining in the 32 sites considered. We note local extinctions of populations of L. catta in at least 12 of the 32 sites examined, and that significantly more extinctions occurred in areas without some form of protection. This decrease in extant populations could represent a decrease of more than 95% of all ring-tailed lemurs in Madagascar since the year 2000. While these results should be considered preliminary, we stress the rapid decline of the species and note that habitat loss, bushmeat hunting and the illegal pet trade are driving populations to local extinction. Based on the data presented here, urgent and immediate funding and conservation action are crucial to ensure the viability of the remaining wild populations of ring-tailed lemurs. Titre du périodique : Folia Primatologica Volume : 87 (5): 320-330 En ligne : https://doi.org/10.1159/000455121 Rapid decrease in populations of wild ring-tailed lemurs (Lemur catta) in Madagascar [texte imprimé] / M Lafleur ; T A Clarke ; K Reuter . - 2017.
Langues : Anglais (eng) Langues originales : Anglais (eng)
Catégories : LEMURIENS
LEMURIENS:Biologie, Ecologie, DensitéMots-clés : BUSMEAT LEMUR CATTA RING TAILED LEMUR MADAGASCAR EXTTINCTION PET TRADE Résumé : Lemurs are the most threatened group of mammals on earth. Lemur catta (ring-tailed lemur) represents one of the most iconic lemur species and faces numerous anthropogenic threats in the wild. In this study, we present population estimates from 32 sites across the range of L. catta, collected from primary and secondary data sources, to assess the number of ring-tailed lemurs left in the wild. We estimate that there are approximately 2,220 individual L. catta remaining in the 32 sites considered. We note local extinctions of populations of L. catta in at least 12 of the 32 sites examined, and that significantly more extinctions occurred in areas without some form of protection. This decrease in extant populations could represent a decrease of more than 95% of all ring-tailed lemurs in Madagascar since the year 2000. While these results should be considered preliminary, we stress the rapid decline of the species and note that habitat loss, bushmeat hunting and the illegal pet trade are driving populations to local extinction. Based on the data presented here, urgent and immediate funding and conservation action are crucial to ensure the viability of the remaining wild populations of ring-tailed lemurs. Titre du périodique : Folia Primatologica Volume : 87 (5): 320-330 En ligne : https://doi.org/10.1159/000455121 Exemplaires
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Titre : Variations in behavioural patterns between Lemur catta groups living in different forest types: implications for conservation Type de document : texte imprimé Auteurs : Ellwanger N, Gould L, Auteur Année de publication : 2011 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : LEMURIENS
LEMURIENS:Biologie, Ecologie, DensitéMots-clés : LEMUR CATTA SPINY FOREST GALLERY FOREST ACTIVITY BUDGET , BEHAVIOURAL FLEXIBILITY Résumé : Implementing effective primate conservation strategies requires knowledge of species’ ecological and behavioural parameters. The protection of all habitat types required for preserving viable dispersion and gene flow between disparate populations necessitates a thorough understanding of the behavioural flexibility of a species. Ring-tailed lemurs Lemur catta inhabit a plethora of habitats throughout southern Madagascar but, hitherto, research has been restricted primarily to riverine gallery forests. The present study presents comparative data on the activity budgets and foraging behaviour of 2 L. catta groups living in different habitats at Berenty Reserve, Madagascar. Data were collected for 2 mo on groups living in a xerophytic spiny forest and a riverine gallery forest. The spiny forest group spent significantly more time in inactive behaviours compared with the gallery forest group. This strategy of apparent energy minimization allows L. catta to thermoregulate despite decreased water availability and high ambient temperatures. The spiny forest group spent significantly more time feeding on small fruits of succulent trees, which we associate with the group’s significantly higher rate of feeding agonism compared with the gallery forest group. These results demonstrate the high behavioural and ecological flexibility of L. catta, suggesting that xerophytic spiny forests might be a vital habitat type for L. catta conservation efforts. Future research should advance knowledge of the resources needed to sustain L. catta populations in other xerophytic spiny forests. Titre du périodique : Endangered Species Research Volume : 14:259-270 En ligne : https://doi.org/10.3354/esr00362 Variations in behavioural patterns between Lemur catta groups living in different forest types: implications for conservation [texte imprimé] / Ellwanger N, Gould L, Auteur . - 2011.
Langues : Anglais (eng) Langues originales : Anglais (eng)
Catégories : LEMURIENS
LEMURIENS:Biologie, Ecologie, DensitéMots-clés : LEMUR CATTA SPINY FOREST GALLERY FOREST ACTIVITY BUDGET , BEHAVIOURAL FLEXIBILITY Résumé : Implementing effective primate conservation strategies requires knowledge of species’ ecological and behavioural parameters. The protection of all habitat types required for preserving viable dispersion and gene flow between disparate populations necessitates a thorough understanding of the behavioural flexibility of a species. Ring-tailed lemurs Lemur catta inhabit a plethora of habitats throughout southern Madagascar but, hitherto, research has been restricted primarily to riverine gallery forests. The present study presents comparative data on the activity budgets and foraging behaviour of 2 L. catta groups living in different habitats at Berenty Reserve, Madagascar. Data were collected for 2 mo on groups living in a xerophytic spiny forest and a riverine gallery forest. The spiny forest group spent significantly more time in inactive behaviours compared with the gallery forest group. This strategy of apparent energy minimization allows L. catta to thermoregulate despite decreased water availability and high ambient temperatures. The spiny forest group spent significantly more time feeding on small fruits of succulent trees, which we associate with the group’s significantly higher rate of feeding agonism compared with the gallery forest group. These results demonstrate the high behavioural and ecological flexibility of L. catta, suggesting that xerophytic spiny forests might be a vital habitat type for L. catta conservation efforts. Future research should advance knowledge of the resources needed to sustain L. catta populations in other xerophytic spiny forests. Titre du périodique : Endangered Species Research Volume : 14:259-270 En ligne : https://doi.org/10.3354/esr00362 Exemplaires
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Titre : Variations in behavioural patterns between Lemur catta groups living in different forest types: implications for conservation Type de document : texte imprimé Auteurs : Nicholas Ellwange, Auteur ; Lisa Gould, Auteur Année de publication : 2011 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : LEMURIENS
LEMURIENS:Biologie, Ecologie, DensitéMots-clés : LEMUR CATTA SPINY FOREST GALLERY FOREST ACTIVITY BUDGET BEHAVIOURAL FLEXIBILITY Résumé : Implementing effective primate conservation strategies requires knowledge of species’ ecological and behavioural parameters. The protection of all habitat types required for preserving viable dispersion and gene flow between disparate populations necessitates a thorough understanding of the behavioural flexibility of a species. Ring-tailed lemurs Lemur catta inhabit a plethora of habitats throughout southern Madagascar but, hitherto, research has been restricted primarily to riverine gallery forests. The present study presents comparative data on the activity budgets and foraging behaviour of 2 L. catta groups living in different habitats at Berenty Reserve, Madagascar. Data were collected for 2 mo on groups living in a xerophytic spiny forest and a riverine gallery forest. The spiny forest group spent significantly more time in inactive behaviours compared with the gallery forest group. This strategy of apparent energy minimization allows L. catta to thermoregulate despite decreased water availability and high ambient temperatures. The spiny forest group spent significantly more time feeding on small fruits of succulent trees, which we associate with the group’s significantly higher rate of feeding agonism compared with the gallery forest group. These results demonstrate the high behavioural and ecological flexibility of L. catta, suggesting that xerophytic spiny forests might be a vital habitat type for L. catta conservation efforts. Future research should advance knowledge of the resources needed to sustain L. catta populations in other xerophytic spiny forests Titre du périodique : Endangered Species Research Volume : 14:259-270 En ligne : https://doi.org/10.3354/esr00362 Variations in behavioural patterns between Lemur catta groups living in different forest types: implications for conservation [texte imprimé] / Nicholas Ellwange, Auteur ; Lisa Gould, Auteur . - 2011.
Langues : Anglais (eng) Langues originales : Anglais (eng)
Catégories : LEMURIENS
LEMURIENS:Biologie, Ecologie, DensitéMots-clés : LEMUR CATTA SPINY FOREST GALLERY FOREST ACTIVITY BUDGET BEHAVIOURAL FLEXIBILITY Résumé : Implementing effective primate conservation strategies requires knowledge of species’ ecological and behavioural parameters. The protection of all habitat types required for preserving viable dispersion and gene flow between disparate populations necessitates a thorough understanding of the behavioural flexibility of a species. Ring-tailed lemurs Lemur catta inhabit a plethora of habitats throughout southern Madagascar but, hitherto, research has been restricted primarily to riverine gallery forests. The present study presents comparative data on the activity budgets and foraging behaviour of 2 L. catta groups living in different habitats at Berenty Reserve, Madagascar. Data were collected for 2 mo on groups living in a xerophytic spiny forest and a riverine gallery forest. The spiny forest group spent significantly more time in inactive behaviours compared with the gallery forest group. This strategy of apparent energy minimization allows L. catta to thermoregulate despite decreased water availability and high ambient temperatures. The spiny forest group spent significantly more time feeding on small fruits of succulent trees, which we associate with the group’s significantly higher rate of feeding agonism compared with the gallery forest group. These results demonstrate the high behavioural and ecological flexibility of L. catta, suggesting that xerophytic spiny forests might be a vital habitat type for L. catta conservation efforts. Future research should advance knowledge of the resources needed to sustain L. catta populations in other xerophytic spiny forests Titre du périodique : Endangered Species Research Volume : 14:259-270 En ligne : https://doi.org/10.3354/esr00362 Exemplaires
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Titre : Research experience in Vohibasia Forest, southwestern Madagascar : *** Auteurs : Shane, Siers R., Editeur : Année de publication : 2007 Importance : p. 42-43 Format : 30 cm ISBN/ISSN/EAN : 1608-1439 Note générale : BIOGEOGRAPHIE Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA EULEMUR FULVUS RUFUS LEMUR CATTA VOHIBASIA BETSAKO BERENTY-ANKAZOABO ANALAVELONA MADAGASIKARA (SUD-OUEST) HABITAT FORET Résumé : La Forêt de Vohibasia est la parcelle au Nord du Parc National Zombitse-Vohibasia. Le secteur protégé de la parcelle de Zombitse se compose de 17,240 hectares de forêt sèche à feuilles caduques, tandis que la parcelle de Vohibasia est composée de 19, 612 ha. Pendant le mois de juin de 2005, des échantillons de poil d'Eulemur fulvus rufus et de Lémur catta dans la Forêt Vohibasia et des fragments de forêt environnants (Betsako, Berenty-Ankazoabo, Analavelona) sont recueillis pour l'analyse de distances génétiques entre les populations de ces deux espèces. Les échantillons devaient être recueillis via une méthode expérimentale de prise de poil des captures conçue pour cette étude. L'expérience dans la Forêt Vohibasia renforce les arguments que les programmes de conservation réalisables doivent considérer la culture, l'éducation et les besoins économiques de populations humaines locales en fournissant la protection efficace et la gestion des zones protégées
- - -Note de contenu : - - - - - - Numéro du document : 08B Niveau Bibliographique : 3 Bull1 (Theme principale) : BIOGEOGRAPHIE Research experience in Vohibasia Forest, southwestern Madagascar : *** [] / Shane, Siers R., . - , 2007 . - p. 42-43 ; 30 cm.
ISSN : 1608-1439
BIOGEOGRAPHIE
Catégories : SCIENCES DE LA VIE Mots-clés : MADAGASIKARA EULEMUR FULVUS RUFUS LEMUR CATTA VOHIBASIA BETSAKO BERENTY-ANKAZOABO ANALAVELONA MADAGASIKARA (SUD-OUEST) HABITAT FORET Résumé : La Forêt de Vohibasia est la parcelle au Nord du Parc National Zombitse-Vohibasia. Le secteur protégé de la parcelle de Zombitse se compose de 17,240 hectares de forêt sèche à feuilles caduques, tandis que la parcelle de Vohibasia est composée de 19, 612 ha. Pendant le mois de juin de 2005, des échantillons de poil d'Eulemur fulvus rufus et de Lémur catta dans la Forêt Vohibasia et des fragments de forêt environnants (Betsako, Berenty-Ankazoabo, Analavelona) sont recueillis pour l'analyse de distances génétiques entre les populations de ces deux espèces. Les échantillons devaient être recueillis via une méthode expérimentale de prise de poil des captures conçue pour cette étude. L'expérience dans la Forêt Vohibasia renforce les arguments que les programmes de conservation réalisables doivent considérer la culture, l'éducation et les besoins économiques de populations humaines locales en fournissant la protection efficace et la gestion des zones protégées
- - -Note de contenu : - - - - - - Numéro du document : 08B Niveau Bibliographique : 3 Bull1 (Theme principale) : BIOGEOGRAPHIE Exemplaires (1)
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