Premium
Sensory‐Motor Integration of Gill Lateral Cilia in the Bivalve Mollusc, Crassostrea virginica
Author(s) -
Akande Patrick,
Bandaogo Zeekanapi,
Carroll Margaret A.,
Catapane Edward J.
Publication year - 2012
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.26.1_supplement.762.6
Subject(s) - mantle (geology) , anatomy , crassostrea , sensory system , cilium , biology , escape response , fishery , neuroscience , oyster , microbiology and biotechnology , paleontology
Gill lateral cilia of Crassostrea virginica are controlled by serotonin (HT) and dopamine (DA) innervation from their ganglia. Most bivalves that have been studied have lateral cilia that respond to HT and DA indicating a neuro or endocrine mechanism. While the motor aspects have been studied over the years, the sensory side has not. We examined effects of sensory cues on beating of lateral cilia of gill of C. virginica . Cilia beating was measured in whole animal preparations. Irritating the mantle rim with a metal probe caused a 70% drop in beating rates lasting at least 15 min. Shining a light on mantle rim decreased beating by 50%. Applying crab extract reduced beating to zero. When the branchial nerve, was cut crab extract had no effect on the cilia. When the cerebrovisceral connective was cut the basal rate was lower than controls and the crab extract was effective in slowing beating rate. Since the mantle rim is a major site of sensory cells in the animal, we excised the rim and applied crab extract. The absence of the mantle rim prevented the crab extract from affecting beating. The study shows a sensory motor integration of the beating of lateral cilia which involves the mantle sensory rim, and the visceral and cerebral ganglia. This work was supported by grants 2R25GM0600309 of NIGMS, 0516041071 of NYSDOE and 0622197 of NSF.