261 research outputs found
Individuality in Fish Behavior: Ecology and Comparative Psychology
This work is a brief review of a series of studies of the phenotypic organization and ecological significance of individual differences in fish behavior. The following species were studied: guppy Poecilia retuculata, lion-headed cichlid Steatocranus cassuarius, and the convict cichlid Archocentrus nigrofasciatum. We developed methods for the analysis of individual differences in fish behavior and studied their structure, development, and ecological and evolutionary significance
Consistency of Skinner Box Activity Measures in the domestic Rabbit (Oryctolagus cuniculus)
Consistency of individual differences in several measures of Skinner box operant and other activity and their intercorrelations in 14 chinchilla bred rabbits were studied. Reliability analysis revealed that both operant and activity measures were highly consistent (Cronbach alpha>0.87) over at least 15 days. Furthermore, locomotor activity, the tendencies to press the lever with high frequency, to make many errors, to check the presence of food in the dispenser as well as rearing were highly inter-correlated, making up a single dimension of activity. However, grooming did not correlate with these behaviors
On the history of photomultiplier tube invention
In this very short note we review some historical aspects of photomultiplier
tube invention. It is our tribute to the memory of great Soviet-Russian
physicist and engineer Leonid Aleksandrovitch Kubetsky whose life and
scientific achievements are described briefly. Particular efforts are made to
shed light on a controversial issue of who invented the first photomultiplier
tube. It is asserted that if to recognize L.A.Kubetsky's priority on the
photomultiplier tube invention the last Beaune Conference would be held on the
eve of the 75th Anniversary of that great event.Comment: Presented at the 4th Beaune Conference on New Development in
Photodetection, Beaune France, 19-24 June 200
Paternal mouthbrooding in the chocolate gourami Sphaerichthys osphromenoides (Osphronemidae)
Medieval and Early Modern Studie
Sensory cues employed for the acquisition of familiarity-dependent recognition of a shoal of conspecifics by climbing perch (Anabas testudineus Bloch)
In this study we showed that a freshwater fish, the climbing perch (Anabas testudineus) is incapable of using chemical communication but employs visual cues to acquire familiarity and distinguish a familiar group of conspecifics from an unfamiliar one. Moreover, the isolation of olfactory signals from visual cues did not affect the recognition and preference for a familiar shoal in this species
Life in a bubble:the role of the labyrinth organ in determining territory, mating and aggressive behaviours in Anabantoid fishes
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