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Author (up) Amici, F.; Widdig, A.; Lehmann, J.; Majolo, B.
Title A meta-analysis of interindividual differences in innovation Type Journal Article
Year 2019 Publication Animal Behaviour Abbreviated Journal Anim. Behav.
Volume 155 Issue Pages 257-268
Keywords age; bad competitor hypothesis; excess of energy hypothesis; innovation; interindividual differences; intraspecific variation; personality; rank; sex
Abstract The ability to innovate and the social transmission of innovations have played a central role in human evolution. However, innovation is also crucial for other animals, by allowing them to cope with novel socioecological challenges. Although innovation plays such a central role in animals' lives, we still do not know the conditions required for innovative behaviour to emerge. Here, we focused on interindividual differences in innovation by (1) extensively reviewing existing literature on innovative behaviour in animals and (2) quantitatively testing the different evolutionary hypotheses that have been proposed to explain interindividual variation in innovation propensity during foraging tasks. We ran a series of phylogenetically controlled mixed-effects meta-regression models to determine which hypotheses (if any) are supported by currently available empirical studies. Our analyses show that innovation is more common in individuals that are older and belong to the larger sex, but also in more neophilic and/or explorative individuals. Moreover, these effects change depending on the study setting (i.e. wild versus captive). Our results provide no clear support to the excess of energy or the bad competitor hypotheses and suggest that study setting and interindividual differences in traits related to personality are also important predictors of innovation.
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ISSN 0003-3472 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 6589
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Author (up) Amodio, P.; Boeckle, M.; Schnell, A.K.; Ostojic, L.; Fiorito, G.; Clayton, N.S.
Title Grow Smart and Die Young: Why Did Cephalopods Evolve Intelligence? Type Journal Article
Year 2018 Publication Trends in Ecology & Evolution Abbreviated Journal Trends. Ecol. Evol.
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Abstract Intelligence in large-brained vertebrates might have evolved through independent, yet similar processes based on comparable socioecological pressures and slow life histories. This convergent evolutionary route, however, cannot explain why cephalopods developed large brains and flexible behavioural repertoires: cephalopods have fast life histories and live in simple social environments. Here, we suggest that the loss of the external shell in cephalopods (i) caused a dramatic increase in predatory pressure, which in turn prevented the emergence of slow life histories, and (ii) allowed the exploitation of novel challenging niches, thus favouring the emergence of intelligence. By highlighting convergent and divergent aspects between cephalopods and large-brained vertebrates we illustrate how the evolution of intelligence might not be constrained to a single evolutionary route.
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Publisher Elsevier Place of Publication Editor
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ISSN 0169-5347 ISBN Medium
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Notes doi: 10.1016/j.tree.2018.10.010 Approved no
Call Number Equine Behaviour @ team @ Serial 6508
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Author (up) Amsterdam BK
Title Mirror self-image reactions before age two Type Journal Article
Year 1972 Publication Dev. Psychol. Abbreviated Journal
Volume 5 Issue Pages 297
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Call Number Equine Behaviour @ team @ Serial 2976
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Author (up) Andersen, N.H.; Norgaard, A.; Jensen, T.J.; Ulstrup, J.
Title Sequential unfolding of the two-domain protein Pseudomonas stutzeri cytochrome c4 Type Journal Article
Year 2002 Publication Journal of Inorganic Biochemistry Abbreviated Journal
Volume 88 Issue 3-4 Pages 316-327
Keywords P. stutzeri cytochrome c4; Sequential unfolding; Di-haem protein; Unfolding
Abstract P. stutzeri cytochrome c4 is a di-haem protein, composed of two globular domains each with His-Met coordinated haem, and a hydrogen bond network between the domains. The domain foldings are highly symmetric but with specific differences including structural differences of ligand coordination, and different spin states of the oxidised haem groups. We have studied unfolding of oxidised P. stutzeri cyt c4 induced thermally and by chemical denaturants. Horse heart cyt c was a reference molecule. Isothermal unfolding induced by guanidinium chloride and acid was followed by Soret, α/β, and 701-nm band absorption, and by far-UV circular dichroism spectroscopy. Multifarious patterns emerge, but the two domains clearly unfold sequentially. One phase, assigned to unfolding of the N-terminal domain, proceeds at guanidinium concentrations up to [approximate]1.0 M. This is followed by two overlapping phases at higher concentrations. The intermediate state maintains Fe-Met coordination, assigned to the C-terminal domain. Interdomain interaction is reflected in decreasing values of the cooperativity parameters. Differential scanning calorimetry shows a single peak, but two peaks appear when guanidinium chloride up to 0.4 M is present. This reflects different chemical action in chemical and thermal unfolding. Acid-induced unfolding kinetics was addressed by pH jumps using diode array stopped-flow techniques. Three kinetic phases in the 701 nm Fe-Met marker band, and four phases in the Soret and α/β bands, spanning 4-1000 ms could be distinguished on pH jumps from 7.5 to the range 2.5-3.5. In this range of time and pH cyt c appears to unfold in no more than two phases. Spectral properties of the kinetic intermediates could be identified. Sequential domain unfolding, formation of high-spin states, and an intermediate state with Fe-Met coordination to a single haem group are features of the unfolding kinetics.
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Call Number refbase @ user @ Serial 3973
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Author (up) Anderson , M.C.; Shettleworth, S.J.
Title Behavioral adaptation to fixed-interval and fixed-time food delivery in golden hamsters Type Journal Article
Year 1977 Publication Journal of the Experimental Analysis of Behavior (JEAB) Abbreviated Journal J Exp Anal Behav
Volume 27 Issue 1 Pages 33-49
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Abstract Food-deprived golden hamsters in a large enclosure received food every 30 sec contingent on lever pressing, or free while their behavior was continuously recorded in terms of an exhaustive classification of motor patterns. As with other species in other situations, behavior became organized into two main classes. One (terminal behaviors) increased in probability throughout interfood intervals; the other (interim behaviors) peaked earlier in interfood intervals. Which class an activity belonged to was independent of whether food was contingent on lever pressing. When food was omitted on some of the intervals (thwarting), the terminal activities began sooner in the next interval, and different interim activities changed in different ways. The interim activities did not appear to be schedule-induced in the usual sense. Rather, the hamsters left the area of the feeder when food was not due and engaged in activities they would normally perform in the experimental environment.
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Language English Summary Language Original Title
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ISSN 0022-5002 ISBN Medium
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Notes PMID:16811980 Approved no
Call Number refbase @ user @ Serial 388
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Author (up) Anderson B.
Title Dendrites and cognition: A negative pilot study in the rat Type Journal Article
Year 1995 Publication Intelligence Abbreviated Journal
Volume 20 Issue Pages 291-308
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Call Number refbase @ user @ Serial 3453
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Author (up) Anderson JR
Title The development of self-recognition: a review Type Journal Article
Year 1984 Publication Dev. Psychobiol. Abbreviated Journal
Volume 17 Issue Pages 35
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Call Number Equine Behaviour @ team @ Serial 2977
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Author (up) Anderson JR; Gallup GG
Title Self-recognition in Saguinus? A critical essay Type Journal Article
Year 1997 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 54 Issue Pages 1563
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Call Number Equine Behaviour @ team @ Serial 2978
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Author (up) Anderson, C.; Franks, N.R.
Title Teams in animal societies Type Journal Article
Year 2001 Publication Behavioral Ecology Abbreviated Journal Behav. Ecol.
Volume 12 Issue 5 Pages 534-540
Keywords animal societies, cooperation, division of labor, groups, invertebrates, task types, teams, vertebrates
Abstract We review the existence of teams in animal societies. Teams have previously been dismissed in all but a tiny minority of insect societies. “Team” is a term not generally used in studies of vertebrates. We propose a new rigorous definition of a team that may be applied to both vertebrate and invertebrate societies. We reconsider what it means to work as a team or group and suggest that there are many more teams in insect societies than previously thought. A team task requires different subtasks to be performed concurrently for successful completion. There is a division of labor within a team. Contrary to previous reviews of teams in social insects, we do not constrain teams to consist of members of different castes and argue that team members may be interchangeable. Consequently, we suggest that a team is simply the set of individuals that performs a team task. We contrast teams with groups and suggest that a group task requires the simultaneous performance and cooperation of two or more individuals for successful completion. In a group, there is no division of labor--each individual performs the same task. We also contrast vertebrate and invertebrate teams and find that vertebrate teams tend to be associated with hunting and are based on individual recognition. Invertebrate teams occur in societies characterized by a great deal of redundancy, and we predict that teams in insect societies are more likely to be found in large polymorphic (“complex”) societies than in small monomorphic (“simple”) societies.
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Notes 10.1093/beheco/12.5.534 Approved no
Call Number Serial 2070
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Author (up) Anderson, G.D.; Herlocker,D.J.
Title Soil factors affecting the distribution of the vegetation types and their utilization by wild animals in Ngorongoro Crater, Tanzania. Type Journal Article
Year 1973 Publication Journal of Ecology Abbreviated Journal J Ecol
Volume 61 Issue Pages 627-651
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Call Number Equine Behaviour @ team @ Serial 2217
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