| Records |
| Author |
Peters, G.; Tembrock, G. |
| Title |
Subharmonics, biphonation, and deterministic chaos in mammal vocalizations |
Type |
Journal Article |
| Year |
1998 |
Publication |
Bioacoustics |
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| Volume |
9 |
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Call Number  |
Equine Behaviour @ team @ Peters1998 |
Serial |
6483 |
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| Author |
Miyata, H.; Gajdon, G.K.; Huber, L.; Fujita, K. |
| Title |
How do keas (Nestor notabilis) solve artificial-fruit problems with multiple locks? |
Type |
Journal Article |
| Year |
2011 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
14 |
Issue |
1 |
Pages |
45-58 |
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| Abstract |
Keas, a species of parrots from New Zealand, are an interesting species for comparative studies of problem solving and cognition because they are known not only for efficient capacities for object manipulation but also for explorative and playful behaviors. To what extent are they efficient or explorative, and what cognitive abilities do they use? We examined how keas would solve several versions of artificial-fruit box problems having multiple locks. After training keas to remove a metal rod from over a Plexiglas lid that had to be opened, we exposed the birds to a variety of tasks having two or more locks. We also introduced a preview phase during which the keas had extended opportunity to look at the tasks before the experimenter allowed the birds to solve them, to examine whether the preview phase would facilitate the birds' performance on the tasks. In a large number of tests, the keas showed a strong trend to solve the tasks with no positive effect of previewing the tasks. When the tasks became complex, however, the keas corrected inappropriate responses more quickly when they had had chance to preview the problems than when they had not. The results suggest that the keas primarily used explorative strategies in solving the lock problems but might have obtained some information about the tasks before starting to solve them. This may reflect a good compromise of keas' trial-and-error tendency and their good cognitive ability that result from a selection pressure they have faced in their natural habitat. |
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1435-9456 |
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no |
| Call Number |
Equine Behaviour @ team @ Miyata2011 |
Serial |
6549 |
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| Author |
Langbein, J.; Siebert, K.; Nuernberg, G. |
| Title |
Concurrent recall of serially learned visual discrimination problems in dwarf goats (Capra hircus) |
Type |
Journal Article |
| Year |
2008 |
Publication |
Behav Proc |
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| Volume |
79 |
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no |
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Equine Behaviour @ team @ Langbein2008 |
Serial |
6363 |
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| Author |
Jarausch, A.; Harms, V.; Kluth, G.; Reinhardt, I.; Nowak, C. |
| Title |
How the west was won: genetic reconstruction of rapid wolf recolonization into Germany's anthropogenic landscapes |
Type |
Journal Article |
| Year |
2021 |
Publication |
Heredity |
Abbreviated Journal |
Heredity |
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Following massive persecution and eradication, strict legal protection facilitated a successful reestablishment of wolf packs in Germany, which has been ongoing since 2000. Here, we describe this recolonization process by mitochondrial DNA control-region sequencing, microsatellite genotyping and sex identification based on 1341 mostly non-invasively collected samples. We reconstructed the genealogy of German wolf packs between 2005 and 2015 to provide information on trends in genetic diversity, dispersal patterns and pack dynamics during the early expansion process. Our results indicate signs of a founder effect at the start of the recolonization. Genetic diversity in German wolves is moderate compared to other European wolf populations. Although dispersal among packs is male-biased in the sense that females are more philopatric, dispersal distances are similar between males and females once only dispersers are accounted for. Breeding with close relatives is regular and none of the six male wolves originating from the Italian/Alpine population reproduced. However, moderate genetic diversity and inbreeding levels of the recolonizing population are preserved by high sociality, dispersal among packs and several immigration events. Our results demonstrate an ongoing, rapid and natural wolf population expansion in an intensively used cultural landscape in Central Europe. |
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1365-2540 |
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no |
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Equine Behaviour @ team @ Jarausch2021 |
Serial |
6638 |
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| Author |
Irving-Pease, E.K.; Ryan, H.; Jamieson, A.; Dimopoulos, E.A.; Larson, G.; Frantz, L.A.F. |
| Title |
Paleogenomics of Animal Domestication |
Type |
Book Chapter |
| Year |
2019 |
Publication |
Paleogenomics: Genome-Scale Analysis of Ancient DNA |
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225-272 |
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Starting with dogs, over 15,000 years ago, the domestication of animals has been central in the development of modern societies. Because of its importance for a range of disciplines – including archaeology, biology and the humanities – domestication has been studied extensively. This chapter reviews how the field of paleogenomics has revolutionised, and will continue to revolutionise, our understanding of animal domestication. We discuss how the recovery of ancient DNA from archaeological remains is allowing researchers to overcome inherent shortcomings arising from the analysis of modern DNA alone. In particular, we show how DNA, extracted from ancient substrates, has proven to be a crucial source of information to reconstruct the geographic and temporal origin of domestic species. We also discuss how ancient DNA is being used by geneticists and archaeologists to directly observe evolutionary changes linked to artificial and natural selection to generate a richer understanding of this fascinating process. |
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Springer International Publishing |
Place of Publication |
Cham |
Editor |
Lindqvist, C.; Rajora, O.P. |
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978-3-030-04753-5 |
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no |
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Equine Behaviour @ team @ Irving-Pease2019 |
Serial |
6583 |
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| Author |
Heyes, C.; Galef, B.G. (eds) |
| Title |
Social learning in animals: the roots of culture |
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Book Whole |
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1996 |
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Academic Press, Inc. |
Place of Publication |
San Diego, CA |
Editor |
Heyes, C. ; Galef, B.G. |
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978-0122739651 |
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no |
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Equine Behaviour @ team @ home |
Serial |
2174 |
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| Author |
Herbst, C.T.; Herzel, H.; Svec, J.G.; Wyman, M.T.; Fitch, W.T. |
| Title |
Visualization of system dynamics using phasegrams |
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Journal Article |
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2013 |
Publication |
J R Soc Interface |
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10 |
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no |
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Equine Behaviour @ team @ Herbst2013 |
Serial |
6487 |
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| Author |
Gholib, G.; Heistermann, M.; Agil, M.; Supriatna, I.; Purwantara, B.; Nugraha, T.P.; Engelhardt, A. |
| Title |
Comparison of fecal preservation and extraction methods for steroid hormone metabolite analysis in wild crested macaques |
Type |
Journal Article |
| Year |
2018 |
Publication |
Primates |
Abbreviated Journal |
Primates |
| Volume |
59 |
Issue |
3 |
Pages |
281-292 |
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| Abstract |
Since the non-invasive field endocrinology techniques were developed, several fecal preservation and extraction methods have been established for a variety of species. However, direct adaptation of methods from previous studies for use in crested macaques should be taken with caution. We conducted an experiment to assess the accuracy and stability of fecal estrogen metabolite (E1C) and glucocorticoid metabolite (GCM) concentrations in response to several preservation parameters: (1) time lag between sample collection and fecal preservation; (2) long-term storage of fecal samples in 80% methanol (MeOH) at ambient temperature; (3) different degrees of feces drying temperature using a conventional oven; and (4) different fecal preservation techniques (i.e., freeze-drying, oven-drying, and field-friendly extraction method) and extraction solvents (methanol, ethanol, and commercial alcohol). The study used fecal samples collected from crested macaques (Macaca nigra) living in the Tangkoko Reserve, North Sulawesi, Indonesia. Samples were assayed using validated E1C and GCM enzyme immunoassays. Concentrations of E1C and GCM in unprocessed feces stored at ambient temperature remained stable for up to 8 h of storage after which concentrations of both E1C and GCM changed significantly compared to controls extracted at time 0. Long-term storage in 80% MeOH at ambient temperature affected hormone concentrations significantly with concentrations of both E1C and GCM increasing after 6 and 4 months of storage, respectively. Drying fecal samples using a conventional oven at 50, 70, and 90 °C did not affect the E1C concentrations, but led to a significant decline for GCM concentrations in samples dried at 90 °C. Different fecal preservation techniques and extraction solvents provided similar results for both E1C and GCM concentrations. Our results confirm previous studies that prior to application of fecal hormone analysis in a new species, several preservation parameters should be evaluated for their effects on hormone metabolite stability. The results also provide several options for fecal preservation, extraction, and storage methods that can be selected depending on the condition of the field site and laboratory. |
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1610-7365 |
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no |
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Equine Behaviour @ team @ Gholib2018 |
Serial |
6521 |
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| Author |
Frank, H.; Frank, M.G. |
| Title |
On the effects of domestication on canine social development and behavior |
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Journal Article |
| Year |
1982 |
Publication |
Appl Anim Ethol |
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8 |
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no |
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Equine Behaviour @ team @ Frank1982 |
Serial |
6259 |
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| Author |
Fagot, J.; Cook, R.G. |
| Title |
Evidence for large long-term memory capacities in baboons and pigeons and its implications for learning and the evolution of cognition |
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Journal Article |
| Year |
2006 |
Publication |
Proc Natl Acad Sci U S A |
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103 |
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no |
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Equine Behaviour @ team @ Fagot2006 |
Serial |
6278 |
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