نتایج جستجو برای: kiwzestan fishes
تعداد نتایج: 19147 فیلتر نتایج به سال:
Neural representations of a moving object's distance and approach speed are essential for determining appropriate orienting responses, such as those observed in the localization behaviors of the weakly electric fish, Apteronotus leptorhynchus. We demonstrate that a power law form of spike rate adaptation transforms an electroreceptor afferent's response to "looming" object motion, effectively p...
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was vacuum-formed from one piece of clear tenite (Lus-Trus Corporation, Ypsilanti, Michigan). The trough is 5 cm wide, 10 cm deep, and filled with water to a depth of 5 cm. The trough is rotated 2 rpm on a turntable in a darkened chamber. The alternative of rotating the stimulus light, photoconductors, and electrodes around the stationary trough seemed less convenient. The stimulus light is a d...
An elementary model of animal aggregation is presented. The group-size distributions resulting from this model are truncated power laws. The predictions of the model are found to be consistent with data that describe the group-size distributions of tuna fish, sardinellas, and African buffaloes.
Selenium, a trace mineral complement is used as cofactor of antioxidant enzymes that protects fishes against environmental stress agents and enhances performance in fishes. In this study the different levels of organic and inorganic source of selenium were included in juvenile rainbow trout diet to evaluate feed conversion ratio (FCR), specific growth rate (SGR), weight gain percent (WG), cond...
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