Resumen

COSTA, Kauê Machado  y  GOUVEIA JR., Amauri. Behavioural responses of the freshwater prawn Macrobrachium amazonicum to chemical with ammonium chloride. Rev. etol. [online]. 2011, vol.10, n.2, pp. 64-67. ISSN 1517-2805.

The objective of the present study was to analyze the behavioral responses of the freshwater prawn Macrobrachium amazonicum, elicited by stimulation with ammonium chloride at 100mM. Specimens were positioned in a four liter dechlorinated freshwater tank and a 0.5ml pulse of stimulant was applied in the opposing corner of the recipient. The studied animals demonstrated no response to the stimuli applied. This may suggest that the behavioral response threshold is higher than the physiological response threshold of the primary chemoreceptor neurons or that the ammonium chloride must be associated with other compounds or certain physical attributes in order to evoke an ethological reaction from the studied species.

Palabras clave : ammonium chloride; chemoreception; feeding behavior; Macrobrachium amazonicum.

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