Hilgartner, Roland D.

[["dc.bibliographiccitation.firstpage","466"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Ethology"],["dc.bibliographiccitation.lastpage","479"],["dc.bibliographiccitation.volume","118"],["dc.contributor.author","Hilgartner, Roland"],["dc.contributor.author","Fichtel, Claudia"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Zinner, Dietmar"],["dc.date.accessioned","2017-09-07T11:47:01Z"],["dc.date.available","2017-09-07T11:47:01Z"],["dc.date.issued","2012"],["dc.description.abstract","Pair-living and a monogamous mating strategy are rare and theoretically unexpected among mammals. Nevertheless, about 10% of primate species exhibit such a social system, which is difficult to explain in the absence of paternal care. In this study, we investigated the two major hypotheses proposed to explain the evolution of monogamy in mammals, the female defence hypothesis (FDH) and the resource defence hypothesis (RDH), in red-tailed sportive lemurs (Lepilemur ruficaudatus), a nocturnal primate from Madagascar. We analysed behavioural data from eight male–female pairs collected during a 24-mo field study to illuminate the determinants of pair-living in this species. Male and female L. ruficaudatus were found to live in dispersed pairs, which are characterised by low cohesion and low encounter rates within a common home range. Social interactions between pair partners were mainly agonistic and characterised by a complete absence of affiliative interactions – body contact was only observed during mating. During the short annual mating season, males exhibited elevated levels of aggression towards mates, as well as extensive mate guarding and increased locomotor activity. In addition, males were exclusively responsible for the maintenance of proximity between pair partners during this period, and they defended their territories against neighbouring males but not against females. Together, these results point towards the importance of female defence in explaining pair-living in L. ruficaudatus. We discuss the spatial and temporal distribution of receptive females in relation to the female defence strategies of males and suggest possible costs that prevent male red-tailed sportive lemurs from defending more than one female."],["dc.identifier.doi","10.1111/j.1439-0310.2012.02033.x"],["dc.identifier.gro","3150574"],["dc.identifier.pmid","23144523"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9480"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7350"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","0179-1613"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Determinants of Pair-Living in Red-Tailed Sportive Lemurs (Lepilemur ruficaudatus)"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","17"],["dc.bibliographiccitation.journal","BMC evolutionary biology"],["dc.bibliographiccitation.lastpage","13"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Andriaholinirina, Nicole"],["dc.contributor.author","Fausser, Jean-Luc"],["dc.contributor.author","Roos, Christian"],["dc.contributor.author","Zinner, Dietmar"],["dc.contributor.author","Thalmann, Urs"],["dc.contributor.author","Rabarivola, Clément"],["dc.contributor.author","Ravoarimanana, Iary"],["dc.contributor.author","Ganzhorn, Jörg U."],["dc.contributor.author","Meier, Bernhard"],["dc.contributor.author","Hilgartner, Roland"],["dc.contributor.author","Walter, Lutz"],["dc.contributor.author","Zaramody, Alphonse"],["dc.contributor.author","Langer, Christoph"],["dc.contributor.author","Hahn, Thomas"],["dc.contributor.author","Zimmermann, Elke"],["dc.contributor.author","Radespiel, Ute"],["dc.contributor.author","Craul, Mathias"],["dc.contributor.author","Tomiuk, Jürgen"],["dc.contributor.author","Tattersall, Ian"],["dc.contributor.author","Rumpler, Yves"],["dc.date.accessioned","2019-07-09T11:52:29Z"],["dc.date.available","2019-07-09T11:52:29Z"],["dc.date.issued","2006"],["dc.description.abstract","Background: The number of species within the Malagasy genus Lepilemur and their phylogenetic relationships is disputed and controversial. In order to establish their evolutionary relationships, a comparative cytogenetic and molecular study was performed. We sequenced the complete mitochondrial cytochrome b gene (1140 bp) from 68 individuals representing all eight sportive lemur species and most major populations, and compared the results with those obtained from cytogenetic studies derived from 99 specimens. Results: Interspecific genetic variation, diagnostic characters and significantly supported phylogenetic relationships were obtained from the mitochondrial sequence data and are in agreement with cytogenetic information. The results confirm the distinctiveness of Lepilemur ankaranensis, L. dorsalis, L. edwardsi, L. leucopus, L. microdon, L. mustelinus, L. ruficaudatus and L. septentrionalis on species level. Additionally, within L. ruficaudatus large genetic differences were observed among different geographic populations. L. dorsalis from Sahamalaza Peninsula and from the Ambanja/Nosy Be region are paraphyletic, with the latter forming a sister group to L. ankaranensis."],["dc.identifier.doi","10.1186/1471-2148-6-17"],["dc.identifier.fs","42806"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/4397"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60200"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","590"],["dc.subject.ddc","599"],["dc.subject.ddc","610"],["dc.subject.ddc","599.8"],["dc.title","Molecular phylogeny and taxonomic revision of the sportive lemurs (Lepilemur, Primates)"],["dc.title.alternative","Research article"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1383"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","International Journal of Primatology"],["dc.bibliographiccitation.lastpage","1396"],["dc.bibliographiccitation.volume","32"],["dc.contributor.author","Fichtel, Claudia"],["dc.contributor.author","Zucchini, Walter"],["dc.contributor.author","Hilgartner, Roland"],["dc.date.accessioned","2017-09-07T11:47:05Z"],["dc.date.available","2017-09-07T11:47:05Z"],["dc.date.issued","2011"],["dc.description.abstract","Many animals are organized into social groups and have to synchronize their activities to maintain group cohesion. Although activity budgets, habitat constraints, and group properties may impact on behavioural synchrony, little is known regarding how members of a group reach a consensus on the timing of activities such as foraging bouts. Game theory predicts that pair partners should synchronize their activities when there is an advantage of foraging together. As a result of this synchronization, differences in the energetic reserves of the two players develop spontaneously and the individual with lower reserves emerges as a pacemaker of the synchrony. Here, we studied the behavioral synchrony of pair-living, nocturnal, red-tailed sportive lemurs (Lepilemur ruficaudatus). We observed 8 pairs continuously for ≥1 annual reproductive cycle in Kirindy Forest, Western Madagascar. During focal observations, one observer followed the female of a pair and, simultaneously, another observer followed the male. We recorded the location and behavioral state of the focal individual every 5 min via instantaneous sampling. Although behavioral synchrony of pair partners appeared to be due mainly to endogenous activity patterns, they actively synchronized when they were in visual contact (<10 m). Nevertheless, red-tailed sportive lemurs benefit from synchronizing their activity only for 15% of the time, when they are close together. The lack of an early warning system for predators and weak support for benefits via social information transfer in combination with energetic constraints may explain why red-tailed sportive lemurs do not spend more time together and thus reap the benefits of behavioral synchrony."],["dc.identifier.doi","10.1007/s10764-011-9551-6"],["dc.identifier.gro","3150613"],["dc.identifier.pmid","22207772"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7163"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7390"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","0164-0291"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","Behavioral synchrony; Coordination; Red-tailed sportive lemurs; Sociality"],["dc.title","Out of Sight but Not Out of Mind? Behavioral Coordination in Red-Tailed Sportive Lemurs (Lepilemur ruficaudatus)"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e104276"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","PloS one"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Hilgartner, Roland"],["dc.contributor.author","Stahl, Daniel"],["dc.contributor.author","Zinner, Dietmar"],["dc.date.accessioned","2019-07-09T11:40:04Z"],["dc.date.available","2019-07-09T11:40:04Z"],["dc.date.issued","2014"],["dc.description.abstract","European white stork (Ciconia ciconia) populations have been object to several conservation measures such as reintroduction programs, habitat improvement or supplementary feeding in the last decades. Although recent white stork censuses revealed an upward trend of most of the western populations, evaluations of the relative importance of certain conservation measures are still scarce or even lacking. In our study we analyzed the effect of supplementary feeding on the reproductive success of white storks in conjunction with other factors such as weather or nest site characteristics. We present data of 569 breeding events at 80 different nest sites located in variable distances to an artificial feeding site at Affenberg Salem (south-western Germany) collected from 1990-2012. A multilevel Poisson regression revealed that in our study population (1) reproductive success was negatively affected by monthly precipitation in April, May and June, (2) pairs breeding on power poles had a lower reproductive success than pairs breeding on platforms or trees and (3) reproductive success was significantly higher in pairs breeding in close distance to the feeding site. The number of fledglings per nest decreased by 8% per kilometer distance to the feeding site. Our data suggest that supplementary feeding increases fledgling populations which may be a tool to attenuate population losses caused by factors such as habitat deterioration or unfavorable conditions in wintering habitats."],["dc.identifier.doi","10.1371/journal.pone.0104276"],["dc.identifier.fs","606459"],["dc.identifier.pmid","25119566"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10634"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58087"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 2.5"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.5"],["dc.title","Impact of supplementary feeding on reproductive success of white storks."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]