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	Author	Potts, R.
	Title	Variability selection in hominid evolution			Type	Journal Article
	Year	1998	Publication	Evolutionary Anthropology: Issues, News, and Reviews	Abbreviated Journal	Evol. Anthropol.
	Volume	7	Issue	3	Pages	81-96
	Keywords	variability selection; hominids; environment; adaptation; natural selection; evolution
	Abstract	Variability selection (abbreviated as VS) is a process considered to link adaptive change to large degrees of environment variability. Its application to hominid evolution is based, in part, on the pronounced rise in environmental remodeling that took place over the past several million years. The VS hypothesis differs from prior views of hominid evolution, which stress the consistent selective effects associated with specific habitats or directional trends (e.g., woodland, savanna expansion, cooling). According to the VS hypothesis, wide fluctuations over time created a growing disparity in adaptive conditions. Inconsistency in selection eventually caused habitat-specific adaptations to be replaced by structures and behaviors responsive to complex environmental change. Key hominid adaptations, in fact, emerged during times of heightened variability. Early bipedality, encephalized brains, and complex human sociality appear to signify a sequence of VS adaptations—i.e., a ratcheting up of versatility and responsiveness to novel environments experienced over the past 6 million years. The adaptive results of VS cannot be extrapolated from selection within a single environmental shift or relatively stable habitat. If some complex traits indeed require disparities in adaptive setting (and relative fitness) in order to evolve, the VS idea counters the prevailing view that adaptive change necessitates long-term, directional consistency in selection. © 1998 Wiley-Liss, Inc.
	Address
	Corporate Author				Thesis
	Publisher	John Wiley & Sons, Inc.	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1520-6505	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5461
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	Author	Parrish, J. K.; Viscido, S. V.
	Title	Traffic rules of fish schools: A review of agent-based approaches.			Type	Book Chapter
	Year	2005	Publication	Self-organisation and the evolution of social behaviour.	Abbreviated Journal
	Volume		Issue		Pages	50-80
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher	Cambridge University Press	Place of Publication	Cambridge	Editor	C. K. Hemelrijk
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5419
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	Author	Dugatkin, L.; Alfieri, M.
	Title	Tit-For-Tat in guppies (Poecilia reticulata): the relative nature of cooperation and defection during predator inspection			Type	Journal Article
	Year	1991	Publication	Evolutionary Ecology	Abbreviated Journal	Evol. Ecol.
	Volume	5	Issue	3	Pages	300-309
	Keywords	Game theory – Tit-For-Tat – predator inspection – guppy
	Abstract	Summary The introduction of game-theoretical thinking into evolutionary biology has laid the groundwork for a heuristic view of animal behaviour in which individuals employ “strategies” – rules that instruct them how to behave in a given circumstance to maximize relative fitness. Axelrod and Hamilton (1981) found that a strategy called Tit-For-Tat (TFT) is one robust cooperative solution to the iterated Prisoner's Dilemma game. There exists, however, little empirical evidence that animals employ TFT. Predator inspection in fish provides one ecological context in which to examine the use of the TFT strategy.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2177
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	Author	Dunbar, Robin I. M.
	Title	The social brain hypothesis			Type	Journal Article
	Year	1998	Publication	Evolutionary Anthropology: Issues, News, and Reviews	Abbreviated Journal	Evol. Anthropol.
	Volume	6	Issue	5	Pages	178-190
	Keywords	brain size – neocortex – social brain hypothesis – social skills – mind reading – primates
	Abstract	Conventional wisdom over the past 160 years in the cognitive and neurosciences has assumed that brains evolved to process factual information about the world. Most attention has therefore been focused on such features as pattern recognition, color vision, and speech perception. By extension, it was assumed that brains evolved to deal with essentially ecological problem-solving tasks. © 1998 Wiley-Liss, Inc.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
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	Notes	Robin Dunbar is Professor of Evolutionary Psychology and Behavioural Ecology at the University of Liverpool, England. His research primarily focuses on the behavioral ecology of ungulates and human and nonhuman primates, and on the cognitive mechanisms and brain components that underpin the decisions that animals make. He runs a large research group, with graduate students working on many different species on four continents.			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4371
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	Author	Purvis, A.
	Title	The h index: playing the numbers game			Type	Journal Article
	Year	2006	Publication	Trends in Ecology & Evolution	Abbreviated Journal	Trends. Ecol. Evol
	Volume	21	Issue	8	Pages	422-422
	Keywords
	Abstract	Article Outline References The ‘h index’ was developed recently as a measure of research performance [1]: a researcher's h is the number of his or her papers that have been cited at least h times. In their thoughtful critique of the index, Kelly and Jennions [2] point out many ways in which h is no better than ‘traditional’ bibliometrics, such as total citation counts. However, there is one way in which, for researchers, it could be very much better, especially if (as Hirsch suggests [1]) it is to inform hiring and promotion decisions. The skewed nature of the distribution of citations among publications means that most researchers have several papers that nearly but not quite count. Consequently, h can be distorted much more easily than can total citation count just by finding a subtle way to cite one's own papers that are ‘bubbling under’. Incidentally, bats show broadly the same life-history allometries as other mammalian clades [3].
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0169-5347	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5046
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	Author	Byrne R.W.
	Title	The evolution of intelligence			Type	Book Chapter
	Year	1994	Publication	Behaviour and Evolution	Abbreviated Journal
	Volume		Issue		Pages	223-265
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	Publisher	Cambridge University Press	Place of Publication	Cambridge,UK	Editor	P.J.B. Slater and T.R. Halliday
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	6566
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	Author	Rands, S.A.; Cowlishaw, G.; Pettifor, R.A.; Rowcliffe, J.M.; Johnstone, R.A.
	Title	The emergence of leaders and followers in foraging pairs when the qualities of individuals differ			Type	Journal Article
	Year	2008	Publication	BMC Evolutionary Biology	Abbreviated Journal	BMC Evol Biol
	Volume	8	Issue		Pages	51
	Keywords	Animals; Feeding Behavior; Food Chain; Models, Biological; Social Dominance
	Abstract	BACKGROUND: Foraging in groups offers animals a number of advantages, such as increasing their likelihood of finding food or detecting and avoiding predators. In order for a group to remain together, there has to be some degree of coordination of behaviour and movement between its members (which may in some cases be initiated by a decision-making leader, and in other cases may emerge as an underlying property of the group). For example, behavioural synchronisation is a phenomenon where animals within a group initiate and then continue to conduct identical behaviours, and has been characterised for a wide range of species. We examine how a pair of animals should behave using a state-dependent approach, and ask what conditions are likely to lead to behavioural synchronisation occurring, and whether one of the individuals is more likely to act as a leader. RESULTS: The model we describe considers how the energetic gain, metabolic requirements and predation risks faced by the individuals affect measures of their energetic state and behaviour (such as the degree of behavioural synchronisation seen within the pair, and the value to an individual of knowing the energetic state of its colleague). We explore how predictable changes in these measures are in response to changes in physiological requirements and predation risk. We also consider how these measures should change when the members of the pair are not identical in their metabolic requirements or their susceptibility to predation. We find that many of the changes seen in these measures are complex, especially when asymmetries exist between the members of the pair. CONCLUSION: Analyses are presented that demonstrate that, although these general patterns are robust, care needs to be taken when considering the effects of individual differences, as the relationship between individual differences and the resulting qualitative changes in behaviour may be complex. We discuss how these results are related to experimental observations, and how the model and its predictions could be extended.
	Address	Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. sean.rands@bristol.ac.uk
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1471-2148	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:18282297			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5126
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	Author	Giraldeau, Luc-Alain
	Title	The ecology of information use			Type	Book Chapter
	Year	1997	Publication	Behavioural ecology : an evolutionary approach	Abbreviated Journal
	Volume		Issue		Pages
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	Abstract
	Address
	Corporate Author				Thesis
	Publisher	Blackwell Science	Place of Publication	Cambridge, Mass.	Editor	Krebs, J.R.; Davies, N.B.
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN	0865427313 9780865427310	Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @ 35114973			Serial	4277
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	Author	Cozzi, B.; Povinelli, M.; Ballarin, C.; Granato, A.
	Title	The Brain of the Horse: Weight and Cephalization Quotients			Type	Journal Article
	Year	2014	Publication	Brain, Behavior and Evolution	Abbreviated Journal	Brain Behav Evol
	Volume	83	Issue	1	Pages	9-16
	Keywords
	Abstract	The horse is a common domestic animal whose anatomy has been studied since the XVI century. However, a modern neuroanatomy of this species does not exist and most of the data utilized in textbooks and reviews derive from single specimens or relatively old literature. Here, we report information on the brain of Equus caballus obtained by sampling 131 horses, including brain weight (as a whole and subdivided into its constituents), encephalization quotient (EQ), and cerebellar quotient (CQ), and comparisons with what is known about other relevant species. The mean weight of the fresh brains in our experimental series was 598.63 g (SEM ± 7.65), with a mean body weight of 514.12 kg (SEM ± 15.42). The EQ was 0.78 and the CQ was 0.841. The data we obtained indicate that the horse possesses a large, convoluted brain, with a weight similar to that of other hoofed species of like mass. However, the shape of the brain, the noteworthy folding of the neocortex, and the peculiar longitudinal distribution of the gyri suggest an evolutionary specificity at least partially separate from that of the Cetartiodactyla (even-toed mammals and cetaceans) with whom Perissodactyla (odd-toed mammals) are often grouped.
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	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0006-8977	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	6592
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	Author	Rankin, D.J.; Lopez-Sepulcre, A.; Foster, K.R.; Kokko, H.
	Title	Species-level selection reduces selfishness through competitive exclusion			Type	Journal Article
	Year	2007	Publication	Journal of Evolutionary Biology	Abbreviated Journal
	Volume	20	Issue	4	Pages	1459-1468
	Keywords
	Abstract	Abstract Adaptation does not necessarily lead to traits which are optimal for the population. This is because selection is often the strongest at the individual or gene level. The evolution of selfishness can lead to a .tragedy of the commons., where traits such as aggression or social cheating reduce population size and may lead to extinction. This suggests that species-level selection will result whenever species differ in the incentive to be selfish. We explore this idea in a simple model that combines individual-level selection with ecology in two interacting species. Our model is not influenced by kin or trait-group selection. We find that individual selection in combination with competitive exclusion greatly increases the likelihood that selfish species go extinct. A simple example of this would be a vertebrate species that invests heavily into squabbles over breeding sites, which is then excluded by a species that invests more into direct reproduction. A multispecies simulation shows that these extinctions result in communities containing species that are much less selfish. Our results suggest that species-level selection and community dynamics play an important role in regulating the intensity of conflicts in natural populations.
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	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
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	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4225
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