Abstracts » Zoology and wildlife conservation

Effects of experience on crab foraging in a mobile and a sedentary species

Article Abstract:

An investigation of the effects of experience on prey selectivity of sedentary mud crabs and the highly mobile blue crabs shows contrasting results. The study shows that the predation rate of blue crabs is significantly affected by experience for at least 24 hours, while there is no meaningful effect on the prey selectivity of mud crabs. The differences may be explained by the two species' morphology, sensory abilities, foraging efficacy and habitat types.

Observations, Animal behavior, Animal feeding and feeds, Blue crabs, Blue crab

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Factors affecting diet selection in the shore crab, Carcinus maenus (L.)

Article Abstract:

The optimal prey selection in the shore crab (Carcinus maenus) is analyzed. Results show that olfactory cues are critical throughout an attack, and crabs prefer those with the highest concentration of mussel filtrate. Shape, which is the determinant of handling time, is another important factor since crabs select items with the lowest handling time. Duringsimultaneous encounters, chemical and tactile stimuli are critical.

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Homing in the swimming crab Thalamita crenata: A mechanism based on underwater landmark memory

Article Abstract:

A swimming crab was studied to determine if it used landmarks to locate its refuges.

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