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| Author | Pérez-Barbería, F.J.; Shultz, S.; Dunbar, R.I. | ||||
| Title | Evidence for coevolution of sociality and relative brain size in three orders of mammals | Type | Journal Article | ||
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2007 | Publication | Evolution | Abbreviated Journal | |
| Volume | 61 | Issue | Pages | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ Pérez-Barbería2007 | Serial | 6221 | ||
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| Author | Ratcliffe, J.M.; Fenton, M.B.; Shettleworth, S.J. | ||||
| Title | Behavioral flexibility positively correlated with relative brain volume in predatory bats | Type | Journal Article | ||
| Year |
2006 | Publication | Brain, behavior and evolution | Abbreviated Journal | Brain Behav Evol |
| Volume | 67 | Issue | 3 | Pages | 165-176 |
| Keywords | Adaptation, Psychological; Animals; Behavior, Animal/*physiology; Brain/*anatomy & histology/physiology; Chiroptera/*anatomy & histology/*physiology; Organ Size; Predatory Behavior/*physiology | ||||
| Abstract | We investigated the potential relationships between foraging strategies and relative brain and brain region volumes in predatory (animal-eating) echolocating bats. The species we considered represent the ancestral state for the order and approximately 70% of living bat species. The two dominant foraging strategies used by echolocating predatory bats are substrate-gleaning (taking prey from surfaces) and aerial hawking (taking airborne prey). We used species-specific behavioral, morphological, and ecological data to classify each of 59 predatory species as one of the following: (1) ground gleaning, (2) behaviorally flexible (i.e., known to both glean and hawk prey), (3) clutter tolerant aerial hawking, or (4) open-space aerial hawking. In analyses using both species level data and phylogenetically independent contrasts, relative brain size was larger in behaviorally flexible species. Further, relative neocortex volume was significantly reduced in bats that aerially hawk prey primarily in open spaces. Conversely, our foraging behavior index did not account for variability in hippocampus and inferior colliculus volume and we discuss these results in the context of past research. | ||||
| Address | Department of Zoology, University of Toronto, Toronto, Canada. jmr247@cornell.edu | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0006-8977 | ISBN | Medium | ||
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| Notes | PMID:16415571 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 358 | ||
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| Author | Purvis, A. | ||||
| Title | The h index: playing the numbers game | Type | Journal Article | ||
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2006 | Publication | Trends in Ecology & Evolution | Abbreviated Journal | Trends. Ecol. Evol |
| Volume | 21 | Issue | 8 | Pages | 422-422 |
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| 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]. |
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| ISSN | 0169-5347 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5046 | ||
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| Author | Dall, S.R.X.; Giraldeau, L.-A.; Olsson, O.; McNamara, J.M.; Stephens, D.W. | ||||
| Title | Information and its use by animals in evolutionary ecology | Type | Journal Article | ||
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2005 | Publication | Trends in Ecology & Evolution (Personal Edition) | Abbreviated Journal | Trends Ecol Evol |
| Volume | 20 | Issue | 4 | Pages | 187-193 |
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| Abstract | Information is a crucial currency for animals from both a behavioural and evolutionary perspective. Adaptive behaviour relies upon accurate estimation of relevant ecological parameters; the better informed an individual, the better it can develop and adjust its behaviour to meet the demands of a variable world. Here, we focus on the burgeoning interest in the impact of ecological uncertainty on adaptation, and the means by which it can be reduced by gathering information, from both 'passive' and 'responsive' sources. Our overview demonstrates the value of adopting an explicitly informational approach, and highlights the components that one needs to develop useful approaches to studying information use by animals. We propose a quantitative framework, based on statistical decision theory, for analysing animal information use in evolutionary ecology. Our purpose is to promote an integrative approach to studying information use by animals, which is itself integral to adaptive animal behaviour and organismal biology. | ||||
| Address | Centre for Ecology and Conservation, University of Exeter in Cornwall, Tremough Campus, Penryn, UK, TR10 9EZ. sashadall@iname.com | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0169-5347 | ISBN | Medium | ||
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| Notes | PMID:16701367 | Approved | no | ||
| Call Number | Serial | 2128 | |||
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| Author | Conradt, L.; Roper, T.J. | ||||
| Title | Consensus decision making in animals | Type | Journal Article | ||
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2005 | Publication | Trends in Ecology & Evolution (Personal Edition) | Abbreviated Journal | Trends Ecol Evol |
| Volume | 20 | Issue | 8 | Pages | 449-456 |
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| Abstract | Individual animals routinely face decisions that are crucial to their fitness. In social species, however, many of these decisions need to be made jointly with other group members because the group will split apart unless a consensus is reached. Here, we review empirical and theoretical studies of consensus decision making, and place them in a coherent framework. In particular, we classify consensus decisions according to the degree to which they involve conflict of interest between group members, and whether they involve either local or global communication; we ask, for different categories of consensus decision, who makes the decision, what are the underlying mechanisms, and what are the functional consequences. We conclude that consensus decision making is common in non-human animals, and that cooperation between group members in the decision-making process is likely to be the norm, even when the decision involves significant conflict of interest. | ||||
| Address | Department of Biology and Environmental Science, John Maynard Smith Building, University of Sussex, Brighton, UK, BN1 9QG. L.Conradt@sussex.ac.uk | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0169-5347 | ISBN | Medium | ||
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| Notes | PMID:16701416 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4802 | ||
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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 | ||
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2005 | Publication | Self-organisation and the evolution of social behaviour. | Abbreviated Journal | |
| Volume | Issue | Pages | 50-80 | ||
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| Publisher | Cambridge University Press | Place of Publication | Cambridge | Editor | C. K. Hemelrijk |
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5419 | ||
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| Author | Sih, A.; Bell, A.; Johnson, J.C. | ||||
| Title | Behavioral syndromes: an ecological and evolutionary overview | Type | Journal Article | ||
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2004 | Publication | Trends in Ecology & Evolution | Abbreviated Journal | Trends. Ecol. Evol |
| Volume | 19 | Issue | 7 | Pages | 372-378 |
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| Abstract | Recent studies suggest that populations and species often exhibit behavioral syndromes; that is, suites of correlated behaviors across situations. An example is an aggression syndrome where some individuals are more aggressive, whereas others are less aggressive across a range of situations and contexts. The existence of behavioral syndromes focuses the attention of behavioral ecologists on limited (less than optimal) behavioral plasticity and behavioral carryovers across situations, rather than on optimal plasticity in each isolated situation. Behavioral syndromes can explain behaviors that appear strikingly non-adaptive in an isolated context (e.g. inappropriately high activity when predators are present, or excessive sexual cannibalism). Behavioral syndromes can also help to explain the maintenance of individual variation in behavioral types, a phenomenon that is ubiquitous, but often ignored. Recent studies suggest that the behavioral type of an individual, population or species can have important ecological and evolutionary implications, including major effects on species distributions, on the relative tendencies of species to be invasive or to respond well to environmental change, and on speciation rates. Although most studies of behavioral syndromes to date have focused on a few organisms, mainly in the laboratory, further work on other species, particularly in the field, should yield numerous new insights. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 2185 | ||
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| Author | Dukas, R. | ||||
| Title | Evolutionary Biology Of Animal Cognition | Type | Journal Article | ||
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2004 | Publication | Annual Review of Ecology, Evolution, and Systematics | Abbreviated Journal | |
| Volume | 35 | Issue | 1 | Pages | 347-374 |
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| Abstract | This review focuses on five key evolutionary issues pertaining to animal cognition, defined as the neuronal processes concerned with the acquisition, retention, and use of information. Whereas the use of information, or decision making, has been relatively well examined by students of behavior, evolutionary aspects of other cognitive traits that affect behavior, including perception, learning, memory, and attention, are less well understood. First, there is ample evidence for genetically based individual variation in cognitive traits, although much of the information for some traits comes from humans. Second, several studies documented positive association between cognitive abilities and performance measures linked to fitness. Third, information on the evolution of cognitive traits is available primarily for color vision and decision making. Fourth, much of the data on plasticity of cognitive traits appears to reflect nonadaptive phenotypic plasticity, perhaps because few evolutionary analyses of cognitive plasticity have been carried out. Nonetheless, several studies suggest that cognitive traits show adaptive plasticity, and at least one study documented genetically based individual variation in plasticity. Fifth, whereas assertions that cognition has played a central role in animal evolution are not supported by currently available data, theoretical considerations indicate that cognition may either increase or decrease the rate of evolutionary change. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 2970 | ||
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| Author | Lefebvre, L.; Reader, S.M.; Sol, D. | ||||
| Title | Brains, Innovations and Evolution in Birds and Primates | Type | Journal Article | ||
| Year |
2004 | Publication | Brain, Behavior and Evolution | Abbreviated Journal | Brain. Behav. Evol. |
| Volume | 63 | Issue | 4 | Pages | 233-246 |
| Keywords | Innovation W Brain evolution W Hyperstriatum ventrale W Neostriatum W Isocortex W Birds W Primates W Tool use W Invasion biology | ||||
| Abstract | Abstract Several comparative research programs have focusedon the cognitive, life history and ecological traits thataccount for variation in brain size. We review one ofthese programs, a program that uses the reported frequencyof behavioral innovation as an operational measureof cognition. In both birds and primates, innovationrate is positively correlated with the relative size of associationareas in the brain, the hyperstriatum ventrale andneostriatum in birds and the isocortex and striatum inprimates. Innovation rate is also positively correlatedwith the taxonomic distribution of tool use, as well asinterspecific differences in learning. Some features ofcognition have thus evolved in a remarkably similar wayin primates and at least six phyletically-independent avianlineages. In birds, innovation rate is associated withthe ability of species to deal with seasonal changes in theenvironment and to establish themselves in new regions,and it also appears to be related to the rate atwhich lineages diversify. Innovation rate provides a usefultool to quantify inter-taxon differences in cognitionand to test classic hypotheses regarding the evolution ofthe brain. |
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| ISSN | 0006-8977 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 4738 | ||
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| Author | List, C. | ||||
| Title | Democracy in animal groups: a political science perspective | Type | Journal Article | ||
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2004 | Publication | Trends in Ecology & Evolution (Personal Edition) | Abbreviated Journal | Trends Ecol Evol |
| Volume | 19 | Issue | 4 | Pages | 168-169 |
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0169-5347 | ISBN | Medium | ||
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| Notes | PMID:16701250 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 5137 | ||
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