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Author |
Fricke, H.W. |
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Title |
Individual partner recognition in fish: field studies on Amphiprion bicinctus |
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Journal Article |
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Year |
1973 |
Publication |
Die Naturwissenschaften |
Abbreviated Journal |
Naturwissenschaften |
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Volume |
60 |
Issue |
4 |
Pages |
204-205 |
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Keywords |
Animals; Cognition; Fishes/*physiology; *Sexual Behavior, Animal |
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0028-1042 |
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PMID:4709357 |
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Call Number |
Equine Behaviour @ team @ |
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2798 |
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Author |
Dugatkin, L.A. |
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Title |
Animal cooperation among unrelated individuals |
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Journal Article |
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Year |
2002 |
Publication |
Die Naturwissenschaften |
Abbreviated Journal |
Naturwissenschaften |
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Volume |
89 |
Issue |
12 |
Pages |
533-541 |
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Keywords |
Animals; Phylogeny; *Social Behavior; Species Specificity |
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Abstract |
The evolution of cooperation has long been a topic near and dear to the hearts of behavioral and evolutionary ecologists. Cooperative behaviors run the gamut from fairly simple to very complicated and there are a myriad of ways to study cooperation. Here I shall focus on three paths that have been delineated in the study of intraspecific cooperation among unrelated individuals: reciprocity, byproduct mutualism, and group selection. In each case, I attempt to delineate the theory underlying each of these paths and then provide examples from the empirical literature. In addition, I shall briefly touch upon some recent work that has attempted to examine (or re-examine) the role of cognition and phylogeny in the study of cooperative behavior. While empirical and theoretical work has made significant strides in the name of better understanding the evolution and maintenance of cooperative behavior in animals, much work remains for the future. “From the point of view of the moralist, the animal world is on about the same level as the gladiator's show. The creatures are fairly well treated, and set to fight; whereby the strongest, the swiftest and the cunningest live to fight another day. The spectator has no need to turn his thumb down, as no quarter is given em leader the weakest and the stupidest went to the wall, while the toughest and the shrewdest, those who were best fitted to cope with their circumstances, but not the best in any other way, survived. Life was a continuous free fight, and em leader a war of each against all was the normal state of existence.” (Huxley 1888) |
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Department of Biology, University of Louisville, Louisville, KY 40292, USA. lee.dugatkin@louisville.edu |
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0028-1042 |
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PMID:12536274 |
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Call Number |
Equine Behaviour @ team @ |
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2797 |
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Author |
Staunton, H. |
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Title |
Mammalian sleep |
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Journal Article |
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Year |
2005 |
Publication |
Die Naturwissenschaften |
Abbreviated Journal |
Naturwissenschaften |
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Volume |
92 |
Issue |
5 |
Pages |
203-220 |
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Keywords |
Animals; Brain/*physiology; Dreams/physiology; Electroencephalography; Humans; Mammals/*physiology; Sleep/*physiology; Sleep, REM/physiology; Wakefulness/physiology |
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This review examines the biological background to the development of ideas on rapid eye movement sleep (REM sleep), so-called paradoxical sleep (PS), and its relation to dreaming. Aspects of the phenomenon which are discussed include physiological changes and their anatomical location, the effects of total and selective sleep deprivation in the human and animal, and REM sleep behavior disorder, the latter with its clinical manifestations in the human. Although dreaming also occurs in other sleep phases (non-REM or NREM sleep), in the human, there is a contingent relation between REM sleep and dreaming. Thus, REM is taken as a marker for dreaming and as REM is distributed ubiquitously throughout the mammalian class, it is suggested that other mammals also dream. It is suggested that the overall function of REM sleep/dreaming is more important than the content of the individual dream; its function is to place the dreamer protagonist/observer on the topographical world. This has importance for the developing infant who needs to develop a sense of self and separateness from the world which it requires to navigate and from which it is separated for long periods in sleep. Dreaming may also serve to maintain a sense of 'I'ness or “self” in the adult, in whom a fragility of this faculty is revealed in neurological disorders. |
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Department of Clinical Neurological Sciences, Royal College of Surgeons in Ireland, Dublin 2, Ireland. hugh@iol.ie |
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0028-1042 |
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PMID:15843983 |
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Call Number |
Equine Behaviour @ team @ |
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2796 |
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Author |
Earley, R.L.; Tinsley, M.; Dugatkin, L.A. |
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Title |
To see or not to see: does previewing a future opponent affect the contest behavior of green swordtail males (Xiphophorus helleri)? |
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Journal Article |
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2003 |
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Naturwissenschaften |
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90 |
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5 |
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226-230 |
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Animals assess the fighting ability of conspecifics either by engaging in aggressive interactions or observing contests between others. However, whether individuals assess physical prowess outside the context of aggressive interactions remains unknown. We examined whether male green swordtails (Xiphophorus helleri) extract information about the fighting ability of solitary individuals via observation and whether acquiring such information elicits behavioral modifications. Contests preceded by mutual visual assessment were significantly shorter than fights where only one or neither of the two individuals was informed in advance. Focal animals initiated aggressive behavior more often against larger opponents only after previewing their adversary, indicating that swordtails can extract information about relative body size from watching solitary conspecifics. When a fighting disadvantage is perceived, observers adopt tactics that increase their probability of winning the contest. |
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Equine Behaviour @ team @ |
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2180 |
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Author |
Klingel, H. |
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Title |
Zur Sozialstruktur des Steppenzebras, Equus quagga boehmi Matschie. |
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Journal Article |
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Year |
1964 |
Publication |
Die Naturwissenschaften |
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51 |
Issue |
14 |
Pages |
347 |
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Equine Behaviour @ team @ |
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2161 |
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Author |
Dugatkin LA. |
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Title |
Developmental environment, cultural transmission, and mate choice copying |
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Journal Article |
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Year |
2007 |
Publication |
Naturwissenschaften |
Abbreviated Journal |
Naturwissenschaften |
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Volume |
94 |
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8 |
Pages |
651-656 |
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Using female mate choice copying as a rudimentary form of cultural transmission, this study provides evidence that social environment during development has a significant effect on the tendency to use culturally acquired information. Groups of newborn guppies (Poecilia reticulata) were raised for 35 days in 1 of 5 “developmental environments”. Groups of 15 newborns were raised in pools with no adults (treatment 1), both adult male and female guppies (treatments 2 and 3), only adult females (treatment 4) or only adult males (treatment 5). Mature females raised in treatments 1 and 2, but not treatments 3, 4, and 5, copied the mate choice of others. Treatments 1 and 2 correspond to social structures that guppies experience during their development in the wild. Newborn guppies swim together in shoals (analogous to treatment 1). As they mature, juveniles join schools of adult males and females (analogous to treatments 2). At no time during the normal developmental process are juveniles found with males, but only unreceptive females (as was the case for long periods in treatment 3) or in the presence of adults of only one sex (analogous to treatments 4 and 5). As such, normal developmental environments prime guppies for cultural transmission, while unnatural environments fail to do so. |
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Department of Biology, University of Louisville, Louisville, KY, 40292, USA, Lee.Dugatkin@louisville.edu |
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0028-1042 |
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PMID:17354007 |
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1819 |
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