Environmental Effects on Behavior and Physiology in Crayfish
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منابع مشابه
Heart and ventilatory measures in crayfish during environmental disturbances and social interactions.
Most animals assess the environment in which they live and alter their behavior according to various stimuli. When the animal does not make significant behavioral changes, as measured by bodily movements, the animal may be characterized as unresponsive to a given stimulus. This study demonstrates that when behavioral movements of crayfish cannot be observed, physiological measures of heart rate...
متن کاملNovelty stress and reproductive state alters responsiveness to sensory stimuli and 5-HT neuromodulation in crayfish.
Sensory stimuli can produce varied responses depending on the physiological state of an animal. Stressors and reproductive stage can result in altered biochemical status that changes the responsiveness of an animal to hormones and neuromodulators, which affects whole animal behavior in relation to sensory stimuli. Crayfish serve as a model for examining the effects of neuromodulators at the neu...
متن کاملSome effects of experimental acidification on phenoloxidase, trypsin and lysozyme activities in freshwater crayfish (Pontastacus leptodactylus)
Levels of phenoloxidase (Po), trypsin and lysozyme activities were determined following 48 hours exposing freshwater crayfish (Pontastacus leptodactylus) weighing 59.8±3.4g to different low pH values of 6.5, 5.5, 4 and 2.5 at 20-23˚C. Significant decrease were found (p<0.01) in levels of Po and trypsin activities in crayfish haemocyte lysate supernatant (HLS) at pHs 5.5 and 4 compared to...
متن کاملHeart rate measures in blind cave crayfish during environmental disturbances and social interactions.
Most animals continually assess the environment in which they live and alter their behavior according to various stimuli. As an observer, one looks for changes in a behavior indicating that an animal responded to a particular event. When the animal does not make significant behavioral changes as measured by bodily movements, the animal may be characterized as unresponsive to a given stimulus. T...
متن کاملSome effects of experimental acidification on phenoloxidase, trypsin and lysozyme activities in freshwater crayfish (Pontastacus leptodactylus)
Levels of phenoloxidase (Po), trypsin and lysozyme activities were determined following 48 hours exposing freshwater crayfish (Pontastacus leptodactylus) weighing 59.8±3.4g to different low pH values of 6.5, 5.5, 4 and 2.5 at 20-23˚C. Significant decrease were found (p
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تاریخ انتشار 2010