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Author Czaran, T. url  doi
openurl 
  Title Game theory and evolutionary ecology: Evolutionary Games & Population Dynamics by J. Hofbauer and K. Sigmund, and Game Theory & Animal Behaviour, edited by L.A. Dugatkin and H.K. Reeve Type Journal Article
  Year 1999 Publication Trends in Ecology & Evolution Abbreviated Journal Trends. Ecol. Evol  
  Volume 14 Issue 6 Pages (down) 246-247  
  Keywords Game theory; Evolutionary ecology; Population dynamics; Ethology  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 485  
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Author Cameron, E.Z.; Linklater, W.L.; Stafford, K.J.; Minot, E.O. doi  openurl
  Title Aging and improving reproductive success in horses: declining residual reproductive value or just older and wiser? Type Journal Article
  Year 2000 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.  
  Volume 47 Issue 4 Pages (down) 243-249  
  Keywords Maternal investment – Equidae – Equus caballus  
  Abstract In many mammalian species, female success in raising offspring improves as they age. The residual reproductive value hypothesis predicts that each individual offspring will be more valuable to the mother as she ages because there is less conflict between the current and potential future offspring. Therefore, as mothers age, their investment into individual offspring should increase. Empirical evidence for an influence of declining residual reproductive value on maternal investment is unconvincing. Older mothers may not invest more, but may be more successful due to greater experience, allowing them to target their investment more appropriately (targeted reproductive effort hypothesis). Most studies do not preclude either hypothesis. Mare age significantly influenced maternal investment in feral horses living on the North Island of New Zealand. Older mares, that were more successful at raising foals, were more protective for the first 20 days of life, but less diligent thereafter. Total maternal input by older mothers did not seem to be any greater, but was better targeted at the most critical period for foal survival and a similar pattern was observed in mares that had lost a foal in the previous year. In addition, older mothers were more likely to foal in consecutive years, supporting the hypothesis that they are investing less than younger mares in individual offspring. Therefore, older mothers seem to become more successful by targeting their investment better due to experience, not by investing more in their offspring.  
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  Notes Approved no  
  Call Number Serial 2019  
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Author Monard, A.-M.; Duncan, P.; Fritz, H.; Feh, C. doi  openurl
  Title Variations in the birth sex ratio and neonatal mortality in a natural herd of horses Type Journal Article
  Year 1997 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.  
  Volume 41 Issue 4 Pages (down) 243-249  
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  Abstract Variations in birth sex ratios and sex differences in juvenile mortality occur in a number of mammalian species, and in many cases have been linked to resource availability. Most of these biases in offspring sex ratios concern polygynous species with pronounced sexual dimorphism, and where females only are philopatric. Data on species with unusual life-history strategies, such as slight sexual dimorphism or dispersal by both sexes, are of particular interest. In this study of a natural herd of horses (Equus caballus) which experienced an eruptive cycle, and therefore a period of nutritional stress, male offspring had higher neonatal mortality rates in nutritionally poor years than in good ones, whereas “year quality” had no effect on the mortality of female offspring; year quality could therefore be used by mares as predictor of sex-specific offspring survival. We show that the environmental conditions that predicted lower survival of males were negatively related to their production: the birth sex ratio the following year was female-biased; and mares were less likely to produce a son when they had produced a son the preceding year. There was no significant effect of mother's parity, age or rank, or the timing of conception or birth on offspring sex ratios. The mechanism leading to biases in the birth sex ratio could have been the loss of male embryos by mares that did not foal. As there was no evidence for selective abortion of male foetuses in females that did foal the next year, it is not necessary to invoke maternal adjustment, though this remains a possibility. Finally, there was a suggestion that male offspring were more costly to raise than females, since mothers that reared a son in poor years tended to experience an increase in the interbirth interval between their two subsequent offspring.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2388  
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Author de Waal, F. B. isbn  openurl
  Title Dominance “style” and primate social organization. Type Book Chapter
  Year 1989 Publication Comparative Socioecology Abbreviated Journal  
  Volume Issue Pages (down) 243-263  
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  Publisher Blackwell Science Place of Publication Editor Standen, V.; Foley, R. A.  
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  ISSN ISBN 978-0632023615 Medium  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 2864  
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Author Dugatkin, L.A.; Alfieri, M. doi  openurl
  Title Guppies and the TIT FOR TAT strategy: preference based on past interaction Type Journal Article
  Year 1991 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.  
  Volume 28 Issue 4 Pages (down) 243-246  
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  Abstract The evolution of cooperation requires either (a) nonrandom interactions, such that cooperators preferentially interact with other cooperators, or (b) conditional behaviors, such that individuals act cooperatively primarily towards other cooperators. Although these conditions can be met without assuming sophisticated animal cognition, they are more likely to be met if animals can remember individuals with whom they have interacted, associate past interactions with these individuals, and base future behavior on this information. Here we show that guppies (Poecilia reticulata), in the context of predator inspection behavior, can identify and remember (for at least 4 h) the “more cooperative” among two conspecifics and subsequently choose to be near these individuals in future encounters.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3397  
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Author Ruffner Ga, C.S. openurl 
  Title Age structure, condition, and reproduction of two burro (Equus asinus) populations from Grand Canyon National Park, Arizona Type Conference Volume
  Year 1979 Publication Symposium on the Ecology and Behavior of wild and feral Equids, Laramie Abbreviated Journal  
  Volume Issue Pages (down) 235  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1534  
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Author Connor, R.C.; Mann, J.; Tyack, P.L.; Whitehead, H. url  doi
openurl 
  Title Social evolution in toothed whales Type Journal Article
  Year 1998 Publication Trends in Ecology & Evolution Abbreviated Journal Trends. Ecol. Evol  
  Volume 13 Issue 6 Pages (down) 228-232  
  Keywords odontocetes; toothed whales; social evolution; communication; bottlenose dolphins; sperm whales; long-term studies; foraging  
  Abstract Two contrasting results emerge from comparisons of the social systems of several odontocetes with terrestrial mammals. Researchers have identified remarkable convergence in prominent features of the social systems of odontocetes such as the sperm whale and bottlenose dolphin with a few well-known terrestrial mammals such as the elephant and chimpanzee. In contrast, studies on killer whales and Baird's beaked whale reveal novel social solutions to aquatic living. The combination of convergent and novel features in odontocete social systems promise a more general understanding of the ecological determinants of social systems in both terrestrial and aquatic habitats, as well as the relationship between relative brain size and social evolution.  
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  ISSN 0169-5347 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4789  
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Author Conley W, openurl 
  Title The potential for increase in horse and ass populations: A theoretical analysis Type Journal Article
  Year 1979 Publication Proceedings of a Conference on the Ecology and Behavior of Feral Equids Abbreviated Journal Symp Ecol and Behav of wild and feral Equids, Laramie  
  Volume Issue Pages (down) 221-234  
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  Corporate Author Thesis  
  Publisher Place of Publication Editor R.H. Denniston  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 991  
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Author Woodward Sl, openurl 
  Title Population dynamics of a herd of feral burros (Abstract) Type Conference Volume
  Year 1979 Publication Symposium on the Ecology and Behavior of wild and feral Equids, Laramie Abbreviated Journal  
  Volume Issue Pages (down) 219-220  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1719  
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Author Kirkpatrick, J.F.; Turner, J.W. doi  openurl
  Title Changes in herd stallions among feral horse bands and the absence of forced copulation and induced abortion Type Journal Article
  Year 1991 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.  
  Volume 29 Issue 3 Pages (down) 217-219  
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  Abstract Forced copulation and induced abortion were investigated in a herd of feral horses inhabiting a coastal barrier island. Eight mares were diagnosed pregnant in August and October 1989 by means of urinary and fecal steroid metabolites, prior to documented changes in herd stallions. These mares were observed for harassment and forced copulation by the new stallions and for the presence of foals during the spring and summer of 1990. No incidents of harassment or attempts at forced copulation were witnessed and seven of the eight mares produced foals in 1990. These data indicate that forced copulation and induced abortion are not common events among all feral horse herds and suggest reinvestigation of this hypothesized phenomenon.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2327  
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