Kappeler, Peter Michael

[["dc.bibliographiccitation.firstpage","21"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Behavioral Ecology"],["dc.bibliographiccitation.lastpage","28"],["dc.bibliographiccitation.volume","24"],["dc.contributor.author","Lührs, Mia-Lana"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:32Z"],["dc.date.available","2017-09-07T11:48:32Z"],["dc.date.issued","2012"],["dc.description.abstract","Group-living has been recognized as one of the major transitions in evolution. Male sociality along with solitary females is rare in mammals, but it can provide unique insights into the evolution of sociality and cooperation. Because males compete with each other over females, male cooperation in mammals has been explained by joint defense of females against other males. Here, we demonstrate that the benefits of male cooperative hunting can play a major role in shaping sociality. By quantifying differences in morphology, activity, diet, and mating success, we show that in Madagascar’s top predator, the fosa ( Cryptoprocta ferox ), some males associate to jointly hunt large prey, which allows them to grow bigger than both solitary males and females. These associated males’ physical superiority also represents an advantage in contest competition for females, as reflected by higher mating success. Our results demonstrate that enhanced access to food resources by cooperative hunting is a key to physical development and competitiveness in fosas. In contrast to previous findings, we show that male sociality must not be limited to joint defense of territory and females, but that cooperation in food acquisition can favor sociality in sexually dimorphic species."],["dc.identifier.doi","10.1093/beheco/ars150"],["dc.identifier.gro","3150843"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7637"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1465-7279"],["dc.subject","cooperative hunting; Cryptoprocta ferox; evolution of group-living; fosa; Madagascar mongoose; male sociality; male–male competition"],["dc.title","Strength in numbers: males in a carnivore grow bigger when they associate and hunt cooperatively"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","473"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","483"],["dc.bibliographiccitation.volume","157"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:22Z"],["dc.date.available","2017-09-07T11:48:22Z"],["dc.date.issued","2008"],["dc.description.abstract","Understanding the co-occurrence of ecologically similar species remains a puzzling issue in community ecology. The species-rich mouse lemurs (Microcebus spec.) are distributed over nearly all remaining forest areas of Madagascar with a high variability in species distribution patterns. Locally, many congeneric species pairs seem to co-occur, but only little detailed information on spatial patterns is available. Here, we present the results of an intensive capture–mark–recapture study of sympatric Microcebus berthae and M. murinus populations that revealed small-scale mutual spatial exclusion. Nearest neighbour analysis indicated a spatial aggregation in Microcebus murinus but not in M. berthae. Although the diet of both species differed in proportions of food categories, they used the same food sources and had high feeding niche overlap. Also, forest structure related to the spatial distribution of main food sources did not explain spatial segregation because parts used by each species exclusively did not differ in density of trees, dead wood and lianas. We propose that life history trade-offs that result in species aggregation and a relative increase in the strength of intra-specific over inter-specific competition best explain the observed pattern of co-occurrence of ecologically similar congeneric Microcebus species."],["dc.identifier.doi","10.1007/s00442-008-1079-x"],["dc.identifier.gro","3150794"],["dc.identifier.pmid","18574599"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3065"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7585"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","0029-8549"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Small-scale coexistence of two mouse lemur species (Microcebus berthae and M. murinus) within a homogeneous competitive environment"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","249"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","American Journal of Physical Anthropology"],["dc.bibliographiccitation.lastpage","259"],["dc.bibliographiccitation.volume","153"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:36Z"],["dc.date.available","2017-09-07T11:48:36Z"],["dc.date.issued","2013"],["dc.description.abstract","Understanding the mechanisms maintaining local species richness is a major topic in tropical ecology. In ecological communities of Madagascar, primates represent a major part of mammalian diversity and, thus, are a suitable taxon to study these mechanisms. Previous research suggested that ecological niche differentiation facilitates the coexistence of lemurs. However, detailed data on all species making up diverse local primate assemblages is rarely available, hampering community-wide tests of niche differentiation among Malagasy mammals. Here, we took an indirect approach and used stable isotopes as long-term indicators of individuals' diets to answer the question of whether trophic patterns and food-related mechanisms stabilize coexistence in a species-rich lemur community. We analyzed stable carbon and nitrogen isotopes in hair collected from eight syntopic lemurs in Kirindy Forest. We found that lemur species were well separated into trophic niches and ranged over two trophic levels. Furthermore, species were densely packed in isotopic space suggesting that past competitive interactions between species are a major structuring force of this dry forest lemur community. Results of other comparative studies on primates and our findings underline that—in contrast to communities worldwide—the structure and composition of lemur communities follow predictions of ecological niche theory. Patterns of competitive interactions might be more clearly revealed in Malagasy primate communities than elsewhere because lemurs represent a large fraction of ecologically interacting species in these communities. The pronounced trophic niche differentiation among lemurs is most likely due to intense competition in the past as is characteristic for adaptive radiations."],["dc.identifier.doi","10.1002/ajpa.22426"],["dc.identifier.gro","3150872"],["dc.identifier.pmid","24242869"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7667"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","0002-9483"],["dc.title","Stable isotope analyses reveal dense trophic species packing and clear niche differentiation in a malagasy primate community"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","35"],["dc.bibliographiccitation.journal","Malagasy Nature"],["dc.bibliographiccitation.lastpage","48"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Dittmann, Marie Theres"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2018-03-20T13:49:09Z"],["dc.date.available","2018-03-20T13:49:09Z"],["dc.date.issued","2014"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13102"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","The impact of selective logging on behavior and ecology of Aphaenogaster swammerdami (Formicidae): 20 years later – a happy ant?"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","599"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Animal Cognition"],["dc.bibliographiccitation.lastpage","609"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Lührs, Mia-Lana"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Fichtel, Claudia"],["dc.date.accessioned","2017-09-07T11:48:34Z"],["dc.date.available","2017-09-07T11:48:34Z"],["dc.date.issued","2009"],["dc.description.abstract","Wild animals face the challenge of locating feeding sites distributed across broad spatial and temporal scales. Spatial memory allows animals to find a goal, such as a productive feeding patch, even when there are no goal-specific sensory cues available. Because there is little experimental information on learning and memory capabilities in free-ranging primates, the aim of this study was to test whether grey mouse lemurs (Microcebus murinus), as short-term dietary specialists, rely on spatial memory in relocating productive feeding sites. In addition, we asked what kind of spatial representation might underlie their orientation in their natural environment. Using an experimental approach, we set eight radio-collared grey mouse lemurs a memory task by confronting them with two different spatial patterns of baited and non-baited artificial feeding stations under exclusion of sensory cues. Positional data were recorded by focal animal observations within a grid system of small foot trails. A change in the baiting pattern revealed that grey mouse lemurs primarily used spatial cues to relocate baited feeding stations and that they were able to rapidly learn a new spatial arrangement. Spatially concentrated, non-random movements revealed preliminary evidence for a route-based restriction in mouse lemur space; during a subsequent release experiment, however, we found high travel efficiency in directed movements. We therefore propose that mouse lemur spatial memory is based on some kind of mental representation that is more detailed than a route-based network map."],["dc.identifier.doi","10.1007/s10071-009-0219-y"],["dc.identifier.gro","3150855"],["dc.identifier.pmid","19263100"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3567"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7649"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","1435-9448"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","Spatial cognition; Topological map; Euclidean map; Correlated random walk; Goal-directed movement; Microcebus murinus"],["dc.title","Spatial memory in the grey mouse lemur (Microcebus murinus)"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","229"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Immunogenetics"],["dc.bibliographiccitation.lastpage","245"],["dc.bibliographiccitation.volume","67"],["dc.contributor.author","Pechouskova, Eva"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Brameier, Markus"],["dc.contributor.author","Fichtel, Claudia"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Huchard, Elise"],["dc.date.accessioned","2017-09-07T11:47:00Z"],["dc.date.available","2017-09-07T11:47:00Z"],["dc.date.issued","2015"],["dc.description.abstract","The polymorphism of immunogenes of the major histocompatibility complex (MHC) is thought to influence the functional plasticity of immune responses and, consequently, the fitness of populations facing heterogeneous pathogenic pressures. Here, we evaluated MHC variation (allelic richness and divergence) and patterns of selection acting on the two highly polymorphic MHC class II loci (DRB and DQB) in the endangered primate Madame Berthe's mouse lemur (Microcebus berthae). Using 454 pyrosequencing, we examined MHC variation in a total of 100 individuals sampled over 9 years in Kirindy Forest, Western Madagascar, and compared our findings with data obtained previously for its sympatric congener, the grey mouse lemur (Microcebus murinus). These species exhibit a contrasting ecology and demography that were expected to affect MHC variation and molecular signatures of selection. We found a lower allelic richness concordant with its low population density, but a similar level of allelic divergence and signals of historical selection in the rare feeding specialist M. berthae compared to the widespread generalist M. murinus. These findings suggest that demographic factors may exert a stronger influence than pathogen-driven selection on current levels of allelic richness in M. berthae. Despite a high sequence similarity between the two congeners, contrasting selection patterns detected at DQB suggest its potential functional divergence. This study represents a first step toward unravelling factors influencing the adaptive divergence of MHC genes between closely related but ecologically differentiated sympatric lemurs and opens new questions regarding potential functional discrepancy that would explain contrasting selection patterns detected at DQB."],["dc.identifier.doi","10.1007/s00251-015-0827-4"],["dc.identifier.gro","3150569"],["dc.identifier.pmid","25687337"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11625"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7345"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","0093-7711"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject","Primates; Cheirogaleidae; Microcebus berthae; 454 pyrosequencing"],["dc.title","MHC class II variation in a rare and ecological specialist mouse lemur reveals lower allelic richness and contrasting selection patterns compared to a generalist and widespread sympatric congener"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","215"],["dc.bibliographiccitation.lastpage","223"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.editor","Masters, Judith"],["dc.contributor.editor","Gamba, Marco"],["dc.contributor.editor","Genin, Fabien"],["dc.date.accessioned","2018-03-29T10:11:09Z"],["dc.date.available","2018-03-29T10:11:09Z"],["dc.date.issued","2012"],["dc.description.abstract","To survive and reproduce successfully in highly seasonal regions, animals must balance their energy budgets during lean seasons. We conducted a comparative study of two sympatric mouse lemur species to identify species-specific energy saving strategies for coping with seasonality and evaluated their consequences for female fitness. Since August 2002 we captured, marked and recaptured individuals of coexisting populations of Microcebus berthae and M. murinus in the Kirindy Forest and recorded activity by direct observations of radio-collared females. The species differed in their seasonal activity patterns: female M. berthae maintained high activity levels throughout the year, whereas female M. murinus all but ceased activity during the cold dry season. In M. berthae, low survival restricted female reproductive potential. Consequently, females maximized the condition in which they entered the reproductive season. In contrast, M. murinus females maximized survival but entered the reproductive season in poor condition. Thus, mouse lemur species subjected to the same environmental conditions show different species-specific energetic strategies to cope with pronounced seasonality."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13194"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","Springer"],["dc.publisher.place","New York"],["dc.relation.ispartof","Leaping Ahead: Advances in Prosimian Biology"],["dc.title","Seasonality and behavioural energy in Microcebus berthae and M. murinus"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","215"],["dc.bibliographiccitation.lastpage","223"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.editor","Masters, Judith"],["dc.contributor.editor","Gamba, Marco"],["dc.contributor.editor","Génin, Fabien"],["dc.date.accessioned","2017-09-07T11:48:31Z"],["dc.date.available","2017-09-07T11:48:31Z"],["dc.date.issued","2012"],["dc.description.abstract","To survive and reproduce successfully in highly seasonal regions, ­animals must balance their energy budgets during lean seasons. We conducted a comparative study of two sympatric mouse lemur species to identify species-specific energy saving strategies for coping with seasonality and evaluated their consequences for female fitness. Since August 2002 we captured, marked and recaptured individuals of coexisting populations of Microcebus berthae and M. murinus in Kirindy Forest and recorded activity by direct observations of radio-collared females. The species differed in their seasonal activity patterns: female M. berthae maintained high activity levels throughout the year, whereas female M. murinus largely ceased activity during the cold dry season. In M. berthae, low survival restricted female reproductive potential. Consequently, females maximized the condition in which they entered the reproductive season. In contrast, M. murinus females maximized survival but entered the reproductive season in poor condition. Thus, mouse lemur species subjected to the same environmental conditions show different species-specific behavioral energy strategies to cope with pronounced seasonality."],["dc.identifier.doi","10.1007/978-1-4614-4511-1_24"],["dc.identifier.gro","3150852"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7646"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.publisher","Springer"],["dc.publisher.place","New York, NY"],["dc.relation.crisseries","Developments in Primatology"],["dc.relation.isbn","978-1-4614-4510-4"],["dc.relation.ispartof","Leaping Ahead: Advances in Prosimian Biology"],["dc.relation.ispartofseries","Developments in Primatology: Progress and Prospects"],["dc.title","Seasonality and Behavioral Energy Strategies in Microcebus berthae and M. murinus"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","181"],["dc.bibliographiccitation.journal","American Journal of Physical Anthropology"],["dc.bibliographiccitation.lastpage","189"],["dc.bibliographiccitation.volume","141"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:57Z"],["dc.date.available","2017-09-07T11:48:57Z"],["dc.date.issued","2009"],["dc.description.abstract","The relationships between resource distribution, type of competition, and consequences for social organization have been formalized in the socioecological model (SEM) which predicts that ecological factors are the main determinants of female distribution. We tested this basic prediction in two solitary primates (Microcebus berthae and M. murinus) which differ in female association patterns. Using stable nitrogen and carbon isotope data of hair samples and food sources we quantified inter-specific differences in diet. δ13C in M. berthae reflected a diet composed mainly of insect secretions. Higher within-species as well as seasonal variation in δ13C of M. murinus indicated a wider trophic niche including plant and animal source food. Constantly elevated δ15N in M. murinus most likely reflected extended torpor during the lean season. This energy-saving strategy together with a wider, more opportunistic feeding niche might reduce female competition in this species, facilitating smaller female ranges, and a higher association potential. In contrast, δ15N fluctuated seasonally in M. berthae, most likely indicating varying amounts of arthropod food in the diet. Intense scramble competition over small and seasonally limited resources might lead to female spatial avoidance and a reduced association potential in M. berthae. Thus, differences in female association patterns between these two solitary foragers are due to different types of competition and overall intensities of intra-specific competition."],["dc.identifier.doi","10.1002/ajpa.21129"],["dc.identifier.gro","3150913"],["dc.identifier.pmid","19591211"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7713"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","0002-9483"],["dc.title","Scramble or contest competition over food in solitarily foraging mouse lemurs (Microcebusspp.): New insights from stable isotopes"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","259"],["dc.bibliographiccitation.lastpage","270"],["dc.contributor.author","Dammhahn, Melanie"],["dc.contributor.author","Markolf, Matthias"],["dc.contributor.author","Lührs, Mia-Lana"],["dc.contributor.author","Thalmann, Urs"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.editor","Goodman, S. M."],["dc.contributor.editor","Gautier, L."],["dc.contributor.editor","Raherilalao, M. J."],["dc.date.accessioned","2017-11-15T12:24:30Z"],["dc.date.available","2017-11-15T12:24:30Z"],["dc.date.issued","2013"],["dc.description.abstract","Explaining the biodiversity and, in particular, the high levels of microendemism of primates in Madagascar has been a scientific challenge for many decades. A prerequisite to our understanding of lemur biogeography is high-resolution spatial data based on homogenous sampling effort across the island. Although the distribution of lemurs is comparatively well documented, some areas of Madagascar have been poorly surveyed. Among these zones is the large zone of microendemism between the Tsiribihina and the Betsiboka Rivers in western Madagascar. Here, we add new data on the distribution of several less known lemur species in this area. Two rapid lemur surveys in combination with hitherto unpublished information confirms the presence of at least 11 primate species from all five lemur families in the Beanka Forest - an isolated fragment of dry deciduous forest on limestone close to Maintirano. This level of species diversity is considerable and exceeds most other dry deciduous forests on the island. The specific determinations of Cheirogaleus sp. indet., Lepilemur cf. randrianasoli, Hapalemur cf. griseus ranomafanensis, and Mirza sp. in the Beanka Forest need to be supported by morphological and genetic data. Overall, lemur distribution in the surveyed zone of microendemism only partly supports the centers-of-endemism hypothesis. Given its extraordinarily high lemur diversity, the Beanka Forest deserves more attention from researchers studying lemur ecology and behavior. Current programs of Biodiversity Conservation Madagascar are important for the conservation of this forest area."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/10024"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.ispartof","The Beanka Forest, Melaky Region, western Madagascar"],["dc.title","Lemurs of the Beanka Forest, Melaky Region, western Madagascar"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]