Non-visual functions of crustacean eyestalk ganglia

Abstract

Ablation experiments demonstrated that in several crustacean groups, the proximal eyestalk ganglia are important in a variety of behavior patterns: 1. Chemical elicitation of feeding via the antennules is altered in lobsters, hermit crabs, and some brachyuran crabs by bilateral eyestalk ablation; the ablation of one antennule and the contralateral eyestalk is effective in lobsters and hermit crabs; 2. increased chewing of inedible objects occurs in all three groups following eyestalk ablation; 3. postural alterations in lobsters and hermit crabs occur following eyestalk ablation; 4. escape responses in lobsters occur only after considerable tactile input in eyestalk-less animals; 5. shell entry by hermit crabs takes much longer following complete eyestalk ablation, in contrast to control operations in which just the distal elements of both eyes are removed. Chemical elicitation of feeding via the antennules is altered in lobsters, hermit crabs, and some brachyuran crabs by bilateral eyestalk ablation; the ablation of one antennule and the contralateral eyestalk is effective in lobsters and hermit crabs; increased chewing of inedible objects occurs in all three groups following eyestalk ablation; postural alterations in lobsters and hermit crabs occur following eyestalk ablation; escape responses in lobsters occur only after considerable tactile input in eyestalk-less animals; shell entry by hermit crabs takes much longer following complete eyestalk ablation, in contrast to control operations in which just the distal elements of both eyes are removed. It is suggested that all of the behavioral alterations seen following eyestalk ablation can be considered a result of the removal of temporal attenuation of stimulus input by themedulla terminalis.

DOI: 10.1007/BF01245153

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Cite this paper

@article{Hazlett2005NonvisualFO, title={Non-visual functions of crustacean eyestalk ganglia}, author={Brian A. Hazlett}, journal={Zeitschrift f{\"{u}r vergleichende Physiologie}, year={2005}, volume={71}, pages={1-13} }