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Author  |
Walther, F.R. |
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Title |
On herding behavior |
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Journal Article |
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1991 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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29 |
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1-4 |
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5-13 |
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Herding behavior in ungulates is executed mainly by males. There are several forms of herding: guarding a single estrous female; rounding up a bunch of females during the rutting season; territorial herding by which a male keeps females inside his territory; herding of a moving, permanent, harem group; social herding in which group members of both sexes are herded by one dominant male. When put into this sequence, a phenotypical trend is illustrated, leading from an intimate connection of herding with mating behavior toward an increasing independence from sexual behavior and culminating in a complete socialization of herding. Aspects and problems of herding behavior are the recognition of, and the animal's respect for, partners in gregarious species; the animal “taking offense” at activities of others which deviate from its own activity; the active coordination and synchronization of group activities; the use of, and the effects of, threat, dominance and courtship displays in herding; the possibility of substitution among expressive displays in relation to partners of different sex; the communicative function of the animal's orientation relative to the partner; social hierarchy and leadership in a group; the possibility of interspecific herding, particularly in man-animal relationships, which is closely linked to the process of domestication. |
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2035 |
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WALTHER F |
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Title |
Beobachtungen ber die Mutter-Kind-Beziehungen und die Rolle des Hengstes bei der Aufzucht eines Fohlens von Equus quagga boehmi |
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1962 |
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Jb G v Opel-Freigeheges |
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3 |
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44-51 |
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from Professor Hans Klingels Equine Reference List |
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1690 |
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Walters, J.R.; Seyfarth, R.M. |
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Title |
Primate Societies |
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Miscellaneous |
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1987 |
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Equine Behaviour @ team @ |
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4858 |
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Walters Je, |
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Movement and home ranges of feral burros on the Tonto plateau, Grand Canyon National Park (Abstract) |
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1979 |
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Symposium on the Ecology and Behavior of wild and feral Equids, Laramie |
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1 |
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from Professor Hans Klingels Equine Reference List |
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1689 |
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Walter, G.; Reisner, A. |
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Title |
Student opinion formation on animal agriculture issues |
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Journal Article |
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Year |
1994 |
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Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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72 |
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6 |
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1654-1658 |
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N1 - |
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Equine Behaviour @ team @ |
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2935 |
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Author |
Walter, B.; Trillmich, F. |
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Female aggression and male peace-keeping in a cichlid fish harem: conflict between and within the sexes in Lamprologus ocellatus |
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Journal Article |
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1994 |
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Behavioral Ecology and Sociobiology |
Abbreviated Journal |
Behav. Ecol. Sociobiol. |
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34 |
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2 |
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105-112 |
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Biomedical and Life Sciences |
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Conflicts of interest within and between the sexes are important processes leading to variability in mating systems. The behavioral interactions mediating conflict are little documented. We studied pairs and harems of the snail-shell inhabiting cichlid fish Lamprologus ocellatus in the laboratory. Due to their larger size, males controlled the resource that limited breeding: snail shells. Males were able to choose among females ready to spawn. Females were only accepted if they produced a clutch within a few days of settling. When several females attempted to settle simultaneously the larger female settled first. Females were least aggressive when guarding eggs. Secondary females were more likely to settle when the primary female was guarding eggs. In established harems females continued to be aggressive against each other. The male intervened in about 80% of female aggressive interactions. Male intervention activity correlated with the frequency of aggression among the females in his harem. The male usually attacked the aggressor and chased her back to her own snail shell. When a male was removed from his harem, aggression between females increased immediately and usually the secondary female was expelled by the primary female within a few days. Time to harem break-up was shorter the more mobile the primary females' young were and did not correlate with the size difference between harem females. Male L. ocellatus interfere actively in female conflict and keep the harem together against female interests. Female conflict presumably relates to the cost of sharing male parental investment and to the potential of predation by another female's large juveniles on a female's own small juveniles. |
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Springer Berlin / Heidelberg |
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0340-5443 |
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Equine Behaviour @ team @ |
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5250 |
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Author |
Walpole, M.J.; Leader-Williams, N. |
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Title |
Tourism and flagship species in conservation |
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2002 |
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Biodivers Conserv |
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11 |
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Equine Behaviour @ team @ Walpole2002 |
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6446 |
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Author |
Wallner, B.; Palmieri, N.; Vogl, C.; Rigler, D.; Bozlak, E.; Druml, T.; Jagannathan, V.; Leeb, T.; Fries, R.; Tetens, J.; Thaller, G.; Metzger, J.; Distl, O.; Lindgren, G.; Rubin, C.-J.; Andersson, L.; Schaefer, R.; McCue, M.; Neuditschko, M.; Rieder, S.; Schlötterer, C.; Brem, G. |
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Title |
Y Chromosome Uncovers the Recent Oriental Origin of Modern Stallions |
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Journal Article |
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2017 |
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Current Biology |
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Current Biology |
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27 |
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13 |
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2029-2035.e5 |
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The Y chromosome directly reflects male genealogies, but the extremely low Y chromosome sequence diversity in horses has prevented the reconstruction of stallion genealogies [1, 2]. Here, we resolve the first Y chromosome genealogy of modern horses by screening 1.46 Mb of the male-specific region of the Y chromosome (MSY) in 52 horses from 21 breeds. Based on highly accurate pedigree data, we estimated the de novo mutation rate of the horse MSY and showed that various modern horse Y chromosome lineages split much later than the domestication of the species. Apart from few private northern European haplotypes, all modern horse breeds clustered together in a roughly 700-year-old haplogroup that was transmitted to Europe by the import of Oriental stallions. The Oriental horse group consisted of two major subclades: the Original Arabian lineage and the Turkoman horse lineage. We show that the English Thoroughbred MSY was derived from the Turkoman lineage and that English Thoroughbred sires are largely responsible for the predominance of this haplotype in modern horses. |
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Elsevier |
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0960-9822 |
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doi: 10.1016/j.cub.2017.05.086 |
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Equine Behaviour @ team @ |
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6669 |
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Author |
Wallner, B.; Brem, G.; Muller, M.; Achmann, R. |
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Fixed nucleotide differences on the Y chromosome indicate clear divergence between Equus przewalskii and Equus caballus |
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2003 |
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Animal Genetics |
Abbreviated Journal |
Anim Genet |
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34 |
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6 |
Pages |
453-456 |
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Animals; Base Sequence; DNA, Mitochondrial/genetics; Genetic Variation/*genetics; Horses/classification/*genetics; Male; Molecular Sequence Data; Phylogeny; Probability; Species Specificity; Y Chromosome/*genetics |
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The phylogenetic relationship between Equus przewalskii and E. caballus is often a matter of debate. Although these taxa have different chromosome numbers, they do not form monophyletic clades in a phylogenetic tree based on mtDNA sequences. Here we report sequence variation from five newly identified Y chromosome regions of the horse. Two fixed nucleotide differences on the Y chromosome clearly display Przewalski's horse and domestic horse as sister taxa. At both positions the Przewalski's horse haplotype shows the ancestral state, in common with the members of the zebra/ass lineage. We discuss the factors that may have led to the differences in mtDNA and Y-chromosomal observations. |
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Institut fur Tierzucht und Genetik, Veterinarmedizinische Universitat Wien, Veterinarplatz, Wien, Austria. wallner@i122server.vu-wien.ac.at |
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English |
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0268-9146 |
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PMID:14687077 |
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Equine Behaviour @ team @ |
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5038 |
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Author |
Wallin, L.; Strandberg, E.; Philipsson, J. |
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Title |
Genetic correlations between field test results of Swedish Warmblood Riding Horses as 4-year-olds and lifetime performance results in dressage and show jumping |
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2003 |
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Livestock Production Science |
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82 |
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1 |
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61-71 |
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Horse; Performance test; Competition results; Animal model; Heritability; Genetic correlation |
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The main objective of this study was to estimate genetic correlations between traits of young sport horses (4 years old) evaluated in the Swedish Riding Horse Quality Test (RHQT) and later competition results in dressage and show jumping. The data comprised 3708 Warmblood horses born between 1968 and 1982 that had participated in the RHQT as 4-year-olds and 25[punctuation space]605 horses born between 1953 and 1995 with competition records. According to the criteria between 1206 and 1879 horses were common to this two files and were available for the estimations of the genetic correlations. Competition performance traits were cumulative points and cumulative placings received during a horse's lifetime, and a log10 transformation was used to achieve a more normal distribution of the data. Genetic correlations between gait traits scored in the RHQT and competition results in dressage were favourable, in the range 0.63-0.75, and between jumping traits scored in the RHQT and results in show jumping 0.83-0.93. Estimated heritabilities for gait and jumping traits scored in the RHQT were in the range 0.09-0.27 and 0.10-0.18, respectively. Estimated heritabilities for the cumulative points and cumulative placings in dressage and show jumping were 0.17/0.16 and 0.23/0.27, respectively. Thus, the results from the RHQT have proved to be useful for early genetic evaluation and selection of both mares and stallions for sport performance traits. |
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