Kraus, Cornelia

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","BMC Evolutionary Biology"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Eckhardt, Falk"],["dc.contributor.author","Pauliny, Angela"],["dc.contributor.author","Rollings, Nicky"],["dc.contributor.author","Mutschmann, Frank"],["dc.contributor.author","Olsson, Mats"],["dc.contributor.author","Kraus, Cornelia"],["dc.contributor.author","Kappeler, Peter M."],["dc.date.accessioned","2021-04-14T08:32:23Z"],["dc.date.available","2021-04-14T08:32:23Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1186/s12862-020-01724-2"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17689"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83903"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","1471-2148"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Stress-related changes in leukocyte profiles and telomere shortening in the shortest-lived tetrapod, Furcifer labordi"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1635"],["dc.bibliographiccitation.issue","1643"],["dc.bibliographiccitation.journal","Proceedings of the Royal Society B: Biological Sciences"],["dc.bibliographiccitation.lastpage","1644"],["dc.bibliographiccitation.volume","275"],["dc.contributor.author","Kraus, Cornelia"],["dc.contributor.author","Eberle, Manfred"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:57Z"],["dc.date.available","2017-09-07T11:48:57Z"],["dc.date.issued","2008"],["dc.description.abstract","Male excess mortality is widespread among mammals and frequently interpreted as a cost of sexually selected traits that enhance male reproductive success. Sex differences in the propensity to engage in risky behaviours are often invoked to explain the sex gap in survival. Here, we aim to isolate and quantify the survival consequences of two potentially risky male behavioural strategies in a small sexually monomorphic primate, the grey mouse lemur Microcebus murinus: (i) most females hibernate during a large part of the austral winter, whereas most males remain active and (ii) during the brief annual mating season males roam widely in search of receptive females. Using a 10-year capture-mark-recapture dataset from a population of M. murinus in Kirindy Forest, western Madagascar, we statistically modelled sex-specific seasonal survival probabilities. Surprisingly, we did not find any evidence for direct survival benefits of hibernation-winter survival did not differ between males and females. By contrast, during the breeding season males survived less well than females (sex gap: 16%). Consistent with the 'risky male behaviour' hypothesis, the period for lowered male survival was restricted to the short mating season. Thus, sex differences in survival in a promiscuous mammal can be substantial even in the absence of sexual dimorphism."],["dc.identifier.doi","10.1098/rspb.2008.0200"],["dc.identifier.gro","3150910"],["dc.identifier.pmid","18426751"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7710"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","0962-8452"],["dc.title","The costs of risky male behaviour: sex differences in seasonal survival in a small sexually monomorphic primate"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","655"],["dc.bibliographiccitation.lastpage","684"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Kraus, Cornelia"],["dc.contributor.editor","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:55Z"],["dc.date.available","2017-09-07T11:48:55Z"],["dc.date.issued","2010"],["dc.description.abstract","The behaviour of animals is the result of adaptations and constraints. To what extent a particular behaviour pattern can be attributed to the relative strengths of these two forces is crucial with respect to understanding the evolution of behaviour. Moreover, in the still young history of the study of animal behaviour, different conceptual approaches have placed very different emphases on the residual behavioural variability beyond adaptations and constraints. In this chapter, we retrace some of these paradigm shifts, offer an overview of different hierarchical levels at which behavioural variability occurs and summarise some of the mechanisms that generate or constrain it. Above the species level, phylogenetic constraints often limit behavioural variability because of a functional relationship between taxonwide life history traits and behaviour, but the exact nature of their underlying mechanisms remains obscure. Phylogenetic constraints exist at different taxonomic levels, and, as several examples from studies of primate behaviour indicate, they are also common in animals with relatively advanced cognitive abilities in which social learning is common. We therefore emphasise the importance of acknowledging the existence of such constraints in behavioural analyses. We also decompose behavioural variability further into variation within species, among individuals and within individuals over time and highlight some of the mechanisms responsible for generating and maintaining this variability. Our review suggests that the specific evolutionary history of a taxon will set the stage at which levels variability can arise, and that cognitive abilities appear to create surprisingly little additional freedom for behavioural variability."],["dc.identifier.doi","10.1007/978-3-642-02624-9_21"],["dc.identifier.gro","3150899"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7698"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.publisher","Springer"],["dc.publisher.place","Berlin, Heidelberg"],["dc.relation.isbn","978-3-642-02623-2"],["dc.relation.ispartof","Animal Behaviour: Evolution and Mechanisms"],["dc.title","Levels and mechanisms of behavioural variability"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","41"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Amphibia-Reptilia"],["dc.bibliographiccitation.lastpage","54"],["dc.bibliographiccitation.volume","40"],["dc.contributor.author","Eckhardt, Falk"],["dc.contributor.author","Kraus, Cornelia"],["dc.contributor.author","Kappeler, Peter M."],["dc.date.accessioned","2020-12-10T18:38:11Z"],["dc.date.available","2020-12-10T18:38:11Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1163/15685381-20181039"],["dc.identifier.eissn","0173-5373"],["dc.identifier.eissn","1568-5381"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/77215"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Life histories, demographies and population dynamics of three sympatric chameleon species (Furcifer spp.) from western Madagascar"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","128"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Evolutionary Biology"],["dc.bibliographiccitation.lastpage","140"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Huchard, Elise"],["dc.contributor.author","Schliehe-Diecks, Susanne"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Kraus, Cornelia"],["dc.date.accessioned","2018-02-12T10:26:53Z"],["dc.date.available","2018-02-12T10:26:53Z"],["dc.date.issued","2016"],["dc.description.abstract","Inbreeding depression may be common in nature, reflecting either the failure of inbreeding avoidance strategies, or inbreeding tolerance when avoidance is costly. The combined assessment of inbreeding risk, avoidance and depression is therefore fundamental to evaluate the inbreeding strategy of a population, i.e., how individuals respond to the risk of inbreeding. Here, we use the demographic and genetic monitoring of 10 generations of wild grey mouse lemurs (Microcebus murinus), small primates from Madagascar with overlapping generations, to examine their inbreeding strategy. Grey mouse lemurs have retained ancestral mammalian traits including solitary lifestyle, polygynandry and male-biased dispersal, and may therefore offer a representative example of the inbreeding strategy of solitary mammals. The occurrence of close kin among candidate mates was frequent in young females (~37%, most often the father) and uncommon in young males (~6%) due to male-biased dispersal. However, close kin consistently represented a tiny fraction of candidate mates (<1%) across age and sex categories. Mating biases favouring partners with intermediate relatedness were detectable in yearling females and adult males, possibly partly caused by avoidance of daughter-father matings. Finally, inbreeding depression, assessed as the effect of heterozygosity on survival, was undetectable using a capture-mark-recapture study. Overall, these results indicate that sex-biased dispersal is a primary inbreeding avoidance mechanism at the population level, and mating biases represent an additional strategy that may mitigate residual inbreeding costs at the individual level. Combined, these mechanisms explain the rarity of inbreeding and the lack of detectable inbreeding depression in this large, genetically diverse population. This article is protected by copyright. All rights reserved."],["dc.identifier.doi","10.1111/jeb.12992"],["dc.identifier.pmid","27790777"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/12143"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","The inbreeding strategy of a solitary primate,Microcebus murinus"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","cow034"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Conservation Physiology"],["dc.bibliographiccitation.volume","4"],["dc.contributor.author","Rakotoniaina, Josué H."],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Ravoniarimbinina, Pascaline"],["dc.contributor.author","Pechouskova, Eva"],["dc.contributor.author","Hämäläinen, Anni"],["dc.contributor.author","Grass, Juliane"],["dc.contributor.author","Kirschbaum, Clemens"],["dc.contributor.author","Kraus, Cornelia"],["dc.date.accessioned","2017-09-07T11:48:23Z"],["dc.date.available","2017-09-07T11:48:23Z"],["dc.date.issued","2016"],["dc.description.abstract","Understanding how animals react to human-induced changes in their environment is a key question in conservation biology. Owing to their potential correlation with fitness, several physiological parameters are commonly used to assess the effect of habitat disturbance on animals' general health status. Here, we studied how two lemur species, the fat-tailed dwarf lemur (Cheirogaleus medius) and the grey mouse lemur (Microcebus murinus), respond to changing environmental conditions by comparing their stress levels (measured as hair cortisol concentration), parasitism and general body condition across four habitats ordered along a gradient of human disturbance at Kirindy Forest, Western Madagascar. These two species previously revealed contrasting responses to human disturbance; whereas M. murinus is known as a resilient species, C. medius is rarely encountered in highly disturbed habitats. However, neither hair cortisol concentrations nor parasitism patterns (prevalence, parasite species richness and rate of multiple infections) and body condition varied across the gradient of anthropogenic disturbance. Our results indicate that the effect of anthropogenic activities at Kirindy Forest is not reflected in the general health status of both species, which may have developed a range of behavioural adaptations to deal with suboptimal conditions. Nonetheless, a difference in relative density among sites suggests that the carrying capacity of disturbed habitat is lower, and both species respond differently to environmental changes, with C. medius being more negatively affected. Thus, even for behaviourally flexible species, extended habitat deterioration could hamper long-term viability of populations."],["dc.identifier.doi","10.1093/conphys/cow034"],["dc.identifier.gro","3150807"],["dc.identifier.pmid","27656285"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13781"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7599"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","2051-1434"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject","Body condition; Madagascar; habitat disturbance; lemurs; parasitism; stress"],["dc.title","Does habitat disturbance affect stress, body condition and parasitism in two sympatric lemurs?"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","30"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","BMC Ecology"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Rakotoniaina, Josué H"],["dc.contributor.author","Kappeler, Peter M"],["dc.contributor.author","Kaesler, Eva"],["dc.contributor.author","Hämäläinen, Anni M"],["dc.contributor.author","Kirschbaum, Clemens"],["dc.contributor.author","Kraus, Cornelia"],["dc.date.accessioned","2019-07-10T08:12:10Z"],["dc.date.available","2019-07-10T08:12:10Z"],["dc.date.issued","2017-09-01"],["dc.description.abstract","Abstract Background Glucocorticoid hormones are known to play a key role in mediating a cascade of physiological responses to social and ecological stressors and can therefore influence animals’ behaviour and ultimately fitness. Yet, how glucocorticoid levels are associated with reproductive success or survival in a natural setting has received little empirical attention so far. Here, we examined links between survival and levels of glucocorticoid in a small, short-lived primate, the grey mouse lemur (Microcebus murinus), using for the first time an indicator of long-term stress load (hair cortisol concentration). Using a capture-mark-recapture modelling approach, we assessed the effect of stress on survival in a broad context (semi-annual rates), but also under a specific period of high energetic demands during the reproductive season. We further assessed the power of other commonly used health indicators (body condition and parasitism) in predicting survival outcomes relative to the effect of long-term stress. Results We found that high levels of hair cortisol were associated with reduced survival probabilities both at the semi-annual scale and over the reproductive season. Additionally, very good body condition (measured as scaled mass index) was related to increased survival at the semi-annual scale, but not during the breeding season. In contrast, variation in parasitism failed to predict survival. Conclusion Altogether, our results indicate that long-term increased glucocorticoid levels can be related to survival and hence population dynamics, and suggest differential strength of selection acting on glucocorticoids, body condition, and parasite infection."],["dc.identifier.doi","10.1186/s12898-017-0140-1"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15131"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60879"],["dc.notes.intern","Merged from goescholar"],["dc.notes.intern","In goescholar not merged with http://resolver.sub.uni-goettingen.de/purl?gs-1/14688 but duplicate"],["dc.publisher","BioMed Central"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Hair cortisol concentrations correlate negatively with survival in a wild primate population"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Physiology & Behavior"],["dc.bibliographiccitation.volume","66"],["dc.contributor.author","Kraus, Cornelia"],["dc.contributor.author","Heistermann, Michael"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2018-03-23T15:10:13Z"],["dc.date.available","2018-03-23T15:10:13Z"],["dc.date.issued","1999"],["dc.description.abstract","In contrast to most anthropoid primates, sifakas (Propithecus verreauxi), like many group-living lemurs, exhibit a number of features that deviate from predictions of sexual selection theory. Despite a promiscuous mating system, they lack sexual dimorphism, suggesting that physical combat plays only a minor role in intrasexual competition for receptive females. In this study, we investigated the hypothesis that socioendocrinological mechanisms contribute to suppression of reproductive function of subordinate males. For that purpose, 10 male sifakas from five social groups were observed for 669 focal animal hours for 4 months, including the mating season, in Western Madagascar. Concomitantly, 315 fecal samples of these animals were collected and the concentration of immunoreactive testosterone was quantified by enzymeimmunoassay procedures. Clear dominance relationships existed among coresident males. Testosterone levels of dominant males were significantly higher than those of subordinates during, as well as outside, the mating season. Additionally, the increase in testosterone levels prior to the mating season was more pronounced for dominant than for subordinate males. These findings are in accordance with the hypothesis of suppression of sexual function of subordinate males, probably providing dominant males with an advantage in sperm competition. If reproductive success is mainly determined by this nonagonistic form of intrasexual competition, the results of this study contribute an important piece to the puzzle of lacking sexual dimorphism in P. verreauxi."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13134"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Physiological suppression of sexual function of subordinate males - theoretical implications for patterns of testosterone secretion, mating systems, and breeding strategies"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","344"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Folia Primatologica"],["dc.bibliographiccitation.lastpage","344"],["dc.bibliographiccitation.volume","86"],["dc.contributor.author","Rakotoniaina, Hasina Josue"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Kraus, Cornelia"],["dc.date.accessioned","2018-03-20T11:34:17Z"],["dc.date.available","2018-03-20T11:34:17Z"],["dc.date.issued","2015"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13094"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Conservation Physiology of Two Sympatric Lemur Species: Is the Specialist More Vulnerable to Habitat Degradation?"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","231"],["dc.bibliographiccitation.journal","International Journal for Parasitology: Parasites and Wildlife"],["dc.bibliographiccitation.lastpage","240"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Eckhardt, Falk"],["dc.contributor.author","Strube, Christina"],["dc.contributor.author","Mathes, Karina A."],["dc.contributor.author","Mutschmann, Frank"],["dc.contributor.author","Thiesler, Hauke"],["dc.contributor.author","Kraus, Cornelia"],["dc.contributor.author","Kappeler, Peter M."],["dc.date.accessioned","2020-12-10T14:24:38Z"],["dc.date.available","2020-12-10T14:24:38Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1016/j.ijppaw.2019.09.010"],["dc.identifier.issn","2213-2244"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17079"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72312"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Parasite burden in a short-lived chameleon, Furcifer labordi"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]