Seasonal Changes in Goldfish Learning?
نویسندگان
چکیده
منابع مشابه
Visual sex discrimination in goldfish: seasonal, sexual, and androgenic influences.
The olfactory signals used by goldfish for sexual and aggressive communication have been studied extensively, but little work has addressed the role of other sensory modalities in social communication in this species. We therefore investigated the role that visual stimuli play in sex discrimination and the ability of androgens, which masculinize courtship behavior, to affect behavioral response...
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The present study examined spatial learning in goldfish using a new apparatus that was an open-field circular pool with latticed holes. The subjects were motivated to reach the baited hole. We examined gustatory cues, intramaze cues, the possibility that the subject could see the food , etc. In Experiment 1, the position of the baited hole was changed for each trial in a random searching group,...
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A quantitative morphologic study of photoreceptor cells in pineal organ of the goldfish was conducted over a period of one year in which the photoperiod-temperature regime simulated the natural environment. Statistically significant seasonal differences were found in cell size, nuclei, nucleoli, mitochondria, endoplasmic reticulum, and Golgi bodies. Peak values generally occurred during the fal...
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The features of unlesioned and lesioned trochlear nerves of goldfish have been examined electron microscopically. Lesioned nerves were studied between 1 and 107 days after cutting or crushing the nerve. Unlesioned nerves contained, on average, 77 myelinated axons and 19 unmyelinated axons. The latter were found in 1-2 fascicles per nerve. A basal lamina surrounded each myelinated axon and fasci...
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ژورنال
عنوان ژورنال: Science
سال: 1974
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.183.4131.1321