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Author |
Schülke, O.; Bhagavatula, J.; Vigilant, L.; Ostner, J. |
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Title |
Social Bonds Enhance Reproductive Success in Male Macaques |
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2010 |
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Current Biology |
Abbreviated Journal |
Curr. Biol. |
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20 |
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24 |
Pages |
2207-2210 |
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Summary For animals living in mixed-sex social groups, females who form strong social bonds with other females live longer and have higher offspring survival [1–3]. These bonds are highly nepotistic, but sometimes strong bonds may also occur between unrelated females if kin are rare [2, 3] and even among postdispersal unrelated females in chimpanzees and horses [4, 5]. Because of fundamental differences between the resources that limit reproductive success in females (food and safety) and males (fertilizations), it has been predicted that bonding among males should be rare and found only for kin and among philopatric males [6] like chimpanzees [7–9]. We studied social bonds among dispersing male Assamese macaques (Macaca assamensis) to see whether males in multimale groups form differentiated social bonds and whether and how males derive fitness benefits from close bonds. We found that strong bonds were linked to coalition formation, which in turn predicted future social dominance, which influenced paternity success. The strength of males' social bonds was directly linked to the number of offspring they sired. Our results show that differentiated social relationships exert an important influence on the breeding success of both sexes that transcends contrasts in relatedness. |
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0960-9822 |
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Equine Behaviour @ team @ |
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5811 |
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Biondi, L.M.; Bó, M.S.; Vassallo, A.I. |
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Inter-individual and age differences in exploration, neophobia and problem-solving ability in a Neotropical raptor (Milvago chimango) |
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2010 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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13 |
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5 |
Pages |
701-710 |
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Animal innovations have far-reaching ecological and evolutionary consequences. The occurrence and persistence of an innovation require several processes, including exploration, social and asocial learning, and low neophobia. In addition, the identity of the innovator may determine how these new behaviours are socially transmitted. Taking into account inter-individual and age differences, we investigated three correlates of animal innovation: object exploration, neophobia level and novel problem-solving ability in an opportunistic generalist raptor, the Chimango Caracara (Milvago chimango). Eighteen individuals (7 adults and 11 juveniles) were caught during the non-breeding period and housed in individual cages in outdoor aviaries. Each bird was given three tests: exploration, neophobia and problem-solving. Individuals differed in their response to novel situations both within and between age groups. Most of the juveniles were more explorative and had a lower neophobic response to a strange object than adult birds, but both age groups were able to solve a novel problem when given a food reward. In juveniles, neophobia level and problem-solving performance were inversely related; however, we found no relationship between these behaviours in adults. Exploration did not correlate with neophobia or problem-solving ability for either age group. This research is one of the few studies exploring the inter-individual and age differences in behavioural innovation and their correlates in a bird of prey. The explorative tendency, low neophobia and ability to innovate showed by M. chimango may be advantageous for this generalist and opportunistic raptor and might be some of the factors underlying its ecological success. |
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1435-9456 |
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Equine Behaviour @ team @ Biondi2010 |
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5939 |
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Author |
de Waal, F.B.M.; Ferrari, P.F. |
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Title |
Towards a bottom-up perspective on animal and human cognition |
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2010 |
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Trends in Cognitive Sciences |
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Trends Cognit. Sci. |
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14 |
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5 |
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201-207 |
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Over the last few decades, comparative cognitive research has focused on the pinnacles of mental evolution, asking all-or-nothing questions such as which animals (if any) possess a theory of mind, culture, linguistic abilities, future planning, and so on. Research programs adopting this top-down perspective have often pitted one taxon against another, resulting in sharp dividing lines. Insight into the underlying mechanisms has lagged behind. A dramatic change in focus now seems to be under way, however, with increased appreciation that the basic building blocks of cognition might be shared across a wide range of species. We argue that this bottom-up perspective, which focuses on the constituent capacities underlying larger cognitive phenomena, is more in line with both neuroscience and evolutionary biology. |
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1364-6613 |
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Equine Behaviour @ team @ |
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5857 |
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Author |
Krueger, K. |
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Title |
Das Pferd im Blickpunkt der Wissenschaft |
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2010 |
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Xenophon Verlag |
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Wald |
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Equine Behaviour @ team @ |
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6009 |
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Krueger, K.; Krueger, K. |
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Title |
Trainingslehre für Dressurpferde [Training the Dressage Horse] |
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2010 |
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Xenophon Verlag |
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Wald |
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Equine Behaviour @ team @ |
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6007 |
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Kaczensky, P.; Huber, K. |
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Title |
The Use of High Frequency GPS Data to Classify Main Behavioural Categories in a Przewalski’s Horse in the Mongolian Gobi |
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2010 |
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DigitalCommons@University of Nebraska – Lincoln |
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Equine Behaviour @ team @ |
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6200 |
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Hare, B.; Rosati, A.; Kaminski, J.; Bräuer, J.; Call, J.; Tomasello, M. |
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The domestication hypothesis for dogs' skills with human communication: a response to Udell et al. (2008) and Wynne et al. (2008) |
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2010 |
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Anim Behav |
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79 |
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Equine Behaviour @ team @ Hare2010 |
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6241 |
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Goetsch, A.L.; Gipson, T.A.; Askar, A.R.; Puchala, R. |
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Title |
Feeding behavior of goats |
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2010 |
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J Anim Sci |
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88 |
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Equine Behaviour @ team @ Goetsch2010 |
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6254 |
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Author |
van de Waal, E.; Bshary, R. |
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Contact with human facilities appears to enhance technical skills in wild vervet monkeys (Chlorocebus aethiops) |
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2010 |
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Folia Primatol |
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81 |
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Equine Behaviour @ team @ van de Waal2010 |
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6265 |
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Frère, C.H.; Krützen, M.; Mann, J.; Connor, R.C.; Bejder, L.; Sherwin, W.B. |
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Title |
Social and genetic interactions drive fitness variation in a free-living dolphin population |
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2010 |
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Proc Natl Acad Sci USA |
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Proc. Natl. Acad. Sci. U.S.A. |
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107 |
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46 |
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19949-19954 |
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The evolutionary forces that drive fitness variation in species are of considerable interest. Despite this, the relative importance and interactions of genetic and social factors involved in the evolution of fitness traits in wild mammalian populations are largely unknown. To date, a few studies have demonstrated that fitness might be influenced by either social factors or genes in natural populations, but none have explored how the combined effect of social and genetic parameters might interact to influence fitness. Drawing from a long-term study of wild bottlenose dolphins in the eastern gulf of Shark Bay, Western Australia, we present a unique approach to understanding these interactions. Our study shows that female calving success depends on both genetic inheritance and social bonds. Moreover, we demonstrate that interactions between social and genetic factors also influence female fitness. Therefore, our study represents a major methodological advance, and provides critical insights into the interplay of genetic and social parameters of fitness. |
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Equine Behaviour @ team @ |
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6412 |
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