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Author |
Byrne R.W. |
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Title |
The evolution of intelligence |
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Book Chapter |
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1994 |
Publication |
Behaviour and Evolution |
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223-265 |
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Cambridge University Press |
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Cambridge,UK |
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P.J.B. Slater and T.R. Halliday |
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Equine Behaviour @ team @ |
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6566 |
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Author |
Taberlet, P.; Waits, L.P.; Luikart, G. |
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Title |
Noninvasive genetic sampling: look before you leap |
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Journal Article |
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Year |
1999 |
Publication |
Trends in Ecology & Evolution |
Abbreviated Journal |
Trends Ecol. Evol |
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Volume |
14 |
Issue |
8 |
Pages |
323-327 |
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Keywords |
Hairs; Feces; Feathers; Allelic dropout; Individual identification; Conservation genetics; Behavioural ecology; Pilot study; Microsatellites; Probability of identity |
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Abstract |
Noninvasive sampling allows genetic studies of free-ranging animals without the need to capture or even observe them, and thus allows questions to be addressed that cannot be answered using conventional methods. Initially, this sampling strategy promised to exploit fully the existing DNA-based technology for studies in ethology, conservation biology and population genetics. However, recent work now indicates the need for a more cautious approach, which includes quantifying the genotyping error rate. Despite this, many of the difficulties of noninvasive sampling will probably be overcome with improved methodology. |
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0169-5347 |
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Equine Behaviour @ team @ |
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6573 |
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Author |
Cozzi, B.; Povinelli, M.; Ballarin, C.; Granato, A. |
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Title |
The Brain of the Horse: Weight and Cephalization Quotients |
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Journal Article |
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Year |
2014 |
Publication |
Brain, Behavior and Evolution |
Abbreviated Journal |
Brain Behav Evol |
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Volume |
83 |
Issue |
1 |
Pages |
9-16 |
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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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0006-8977 |
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Equine Behaviour @ team @ |
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6592 |
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Author |
Dong, D.; Jones, G.; Zhang, S. |
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Title |
Dynamic evolution of bitter taste receptor genes in vertebrates |
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Journal Article |
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Year |
2009 |
Publication |
BMC Evolutionary Biology |
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Volume |
9 |
Issue |
1 |
Pages |
12 |
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Sensing bitter tastes is crucial for many animals because it can prevent them from ingesting harmful foods. This process is mainly mediated by the bitter taste receptors (T2R), which are largely expressed in the taste buds. Previous studies have identified some T2R gene repertoires, and marked variation in repertoire size has been noted among species. However, the mechanisms underlying the evolution of vertebrate T2R genes remain poorly understood. |
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1471-2148 |
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Equine Behaviour @ team @ Dong2009 |
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6637 |
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Author |
Bergmüller, R.; Taborsky, M. |
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Title |
Animal personality due to social niche specialisation |
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Journal Article |
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Year |
2010 |
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Trends in Ecology & Evolution |
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25 |
Issue |
9 |
Pages |
504-511 |
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The existence of 'animal personality', i.e. consistent individual differences in behaviour across time and contexts, is an evolutionary puzzle that has recently generated considerable research interest. Although social factors are generally considered to be important, it is as yet unclear how they might select for personality. Drawing from ecological niche theory, we explore how social conflict and alternative social options can be key factors in the evolution and development of consistent individual differences in behaviour. We discuss how animal personality research might benefit from insights into the study of alternative tactics and illustrate how selection can favour behavioural diversification and consistency due to fitness benefits resulting from conflict reduction among social partners. |
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0169-5347 |
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Equine Behaviour @ team @ |
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6646 |
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Author |
Meriggi, A.; Dagradi, V.; Dondina, O.; Perversi, M.; Milanesi, P.; Lombardini, M.; Raviglione, S.; Repossi, A. |
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Title |
Short-term responses of wolf feeding habits to changes of wild and domestic ungulate abundance in Northern Italy |
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Journal Article |
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Year |
2014 |
Publication |
Ethology Ecology & Evolution |
Abbreviated Journal |
Ethology Ecology & Evolution |
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Volume |
27 |
Issue |
4 |
Pages |
389-411 |
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Taylor & Francis |
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0394-9370 |
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doi: 10.1080/03949370.2014.986768 |
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Equine Behaviour @ team @ |
Serial |
6688 |
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Author |
Dall, S.R.X.; Giraldeau, L.-A.; Olsson, O.; McNamara, J.M.; Stephens, D.W. |
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Title |
Information and its use by animals in evolutionary ecology |
Type |
Journal Article |
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Year |
2005 |
Publication |
Trends in Ecology & Evolution (Personal Edition) |
Abbreviated Journal |
Trends Ecol Evol |
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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. |
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Centre for Ecology and Conservation, University of Exeter in Cornwall, Tremough Campus, Penryn, UK, TR10 9EZ. sashadall@iname.com |
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0169-5347 |
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Notes |
PMID:16701367 |
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Serial |
2128 |
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Author |
Conradt, L.; Roper, T.J. |
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Title |
Consensus decision making in animals |
Type |
Journal Article |
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Year |
2005 |
Publication |
Trends in Ecology & Evolution (Personal Edition) |
Abbreviated Journal |
Trends Ecol Evol |
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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. |
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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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0169-5347 |
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PMID:16701416 |
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Equine Behaviour @ team @ |
Serial |
4802 |
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Author |
Hampton, R.R.; Sherry, D.F.; Shettleworth, S.J.; Khurgel, M.; Ivy, G. |
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Title |
Hippocampal volume and food-storing behavior are related in parids |
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Journal Article |
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Year |
1995 |
Publication |
Brain, behavior and evolution |
Abbreviated Journal |
Brain Behav Evol |
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45 |
Issue |
1 |
Pages |
54-61 |
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Keywords |
Animals; Appetitive Behavior/*physiology; Birds/*anatomy & histology; Brain Mapping; Evolution; Food Preferences/physiology; Hippocampus/*anatomy & histology; Mental Recall/*physiology; Orientation/*physiology; Predatory Behavior/physiology; Social Environment; Species Specificity |
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The size of the hippocampus has been previously shown to reflect species differences and sex differences in reliance on spatial memory to locate ecologically important resources, such as food and mates. Black-capped chickadees (Parus atricapillus) cached more food than did either Mexican chickadees (P. sclateri) or bridled titmice (P. wollweberi) in two tests of food storing, one conducted in an aviary and another in smaller home cages. Black-capped chickadees were also found to have a larger hippocampus, relative to the size of the telencephalon, than the other two species. Differences in the frequency of food storing behavior among the three species have probably produced differences in the use of hippocampus-dependent memory and spatial information processing to recover stored food, resulting in graded selection for size of the hippocampus. |
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Address |
Department of Psychology, University of Toronto, Ontario, Canada |
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0006-8977 |
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PMID:7866771 |
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refbase @ user @ |
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379 |
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Author |
Shettleworth, S.J. |
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Title |
Memory and hippocampal specialization in food-storing birds: challenges for research on comparative cognition |
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Journal Article |
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Year |
2003 |
Publication |
Brain, behavior and evolution |
Abbreviated Journal |
Brain Behav Evol |
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Volume |
62 |
Issue |
2 |
Pages |
108-116 |
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Animals; Birds/*physiology; Cognition/*physiology; Color Perception/physiology; Feeding Behavior/*physiology; Hippocampus/*physiology; Memory/*physiology; Species Specificity |
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The three-way association among food-storing behavior, spatial memory, and hippocampal enlargement in some species of birds is widely cited as an example of a new 'cognitive ecology' or 'neuroecology.' Whether this relationship is as strong as it first appears and whether it might be evidence for an adaptive specialization of memory and hippocampus in food-storers have recently been the subject of some controversy [Bolhuis and Macphail, 2001; Macphail and Bolhuis, 2001]. These critiques are based on misconceptions about the nature of adaptive specializations in cognition, misconceptions about the uniformity of results to be expected from applying the comparative method to data from a wide range of species, and a narrow view of what kinds of cognitive adaptations are theoretically interesting. New analyses of why food-storers (black-capped chickadees, Poecile Atricapilla) respond preferentially to spatial over color cues when both are relevant in a memory task show that this reflects a relative superiority of spatial memory as compared to memory for color rather than exceptional spatial attention or spatial discrimination ability. New studies of chickadees from more or less harsh winter climates also support the adaptive specialization hypothesis and suggest that within-species comparisons may be especially valuable for unraveling details of the relationships among ecology, memory, and brain in food-storing species. |
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Department of Psychology, University of Toronto, Toronto, Ont., M5S 3G3, Canada. shettle@psych.utoronto.ca |
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0006-8977 |
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PMID:12937349 |
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refbase @ user @ |
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367 |
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