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Prediction, location, collection and transport of jellyfish (Cnidaria) and their polyps

Abstract 10.1002/zoo.20218.abs With growing interest in research and display of living jellyfish workers are realizing the difficulty in obtaining and maintaining a healthy collection consistently. This report identifies the causes for the uncertainty in locating specimens and summarizes the latest technology, techniques and avenues for acquiring jellyfish for captive maintenance. Responsibility inherent with jellyfish transport […]

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Development of guidelines for assessing obesity in captive chimpanzees (Pan troglodytes)

Abstract 10.1002/zoo.20122.abs Many captive chimpanzees (Pan troglodytes) are subjectively considered to be overweight or obese. However, discussions of obesity in chimpanzees are rare in the literature, despite the acknowledged problem. No study to date has systematically examined obesity in captive chimpanzees. This project develops guidelines for defining obesity in captive chimpanzees through the examination of […]

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Individual variation in spontaneous problem-solving performance among wild great tits

Behavioural traits generally and cognitive traits in particular are relatively understudied in an evolutionary ecological context. One reason for this is that such traits are often difficult to characterize among large numbers of individuals, without the influence of diverse environmental effects swamping intrinsic individual differences. We conducted standardized assays on a natural population of great […]

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Scale variation in a laboratory colony of amelanistic diamondback rattlesnakes (Crotalus atrox)

Abstract 10.1002/zoo.1430130202.abs Inbreeding for 6 generations has produced a strain of amelanistic western diamondback rattlesnakes (Crotalus atrox) with extremely variable scalation. Forty-four siblings varying from virtually no body scalation to normal scalation have been produced in the latest generation. Two of the 3 most extreme β€œscaleless” snakes were stillborn; the third was maintained for > […]

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Social network analysis in the study of nonhuman primates: A historical perspective

Abstract Advances over the last 15 years have made social network analysis (SNA) a powerful tool for the study of nonhuman primate social behavior. Although many SNA-based techniques have been only very recently adopted in primatological research, others have been commonly used by primatologists for decades. The roots of SNA also stem from some of […]

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Personality and Temperament in Nonhuman Primates

The result of a symposium hosted by the American Society of Primatologists, this volume attests to the huge strides made in recent decades by researchers studying primates and their behavior. Research into the notion of β€˜personality’ in nonhuman primates can be traced back to the 1930s and 40s, when primatologists began to notice large individual […]

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Onset and Early Use of Gestural Communication in Nonhuman Great Apes

The early gesturing of six bonobos, eight chimpanzees, three gorillas, and eight orangutans was systematically documented using focal animal sampling. Apes’ were observed during their first 20 months of life in an effort to investigate: (i) the onset of gesturing; (ii) the order in which signals of different sensory modalities appear; (iii) the extent to […]

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Bimodal Temporal Organization of Specific Vigilance Behaviors in Captive Black Tufted-Ear Marmosets (Callithrix penicillata)

The aerial/terrestrial scan and glance behaviors of 20 captive adult black tufted-ear marmosets (Callithrix penicillata), kept undisturbed in their own familiar social environments, were assessed at 07:00, 09:00, 11:00, 13:00 and 15:00 h, as little is known on the temporal organization of their vigilance repertoire, particularly under normal social and stress-free conditions. For each time […]

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Social attachment in giraffe: response to social separation

Attachment relationships between animals are often studied by separating a pair of individuals and recording their subsequent behavior. Studies of non-human primates have shown that separation results in changes that are indicative of both psychological and physiological stress. Similar results have been found in several non-primate species with differing social structures. This study exam-ined the […]

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