Behavioral states and feeding in the gastropod Pleurobranchaea

Palovcik, Reinhard A.

doi:10.1016/s0091-6773(76)91395-x

Cited by 16 publications

(3 citation statements)

References 10 publications

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“…These responses habituate with repeated testing, if no strong, motivationally significant US is presented. Food, the US used, induces an arousal state in many gastropods (Kemenes & S.-Rózsa, 1987;Lee & Palovcik, 1976;Tuersley & McCrohan, 1987)-including Aplysia (Advokat, 1980;Susswein, Weiss, & Kupfermann, 1978;Weiss, Koch, Koester, Rosen, & Kupfermann, 1982)-that facilitates various appetitive behaviors, such as bite/strike and rasping movements of the mouth. In addition to facilitating the biting responses to both the CSϩ and the CSϪ, the US also plausibly disrupts habituation to the CSϩ with which it is paired.…”

Section: Nonassociative Influences During Appetitive Chemosensory Conmentioning

confidence: 99%

Chemosensory conditioning in molluscs: II. A critical review

Farley

Jin

Huang

et al. 2004

Learning & Behavior

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We critically review chemosensory conditioning studies with molluscs and find that, in many studies, the influence of nonassociative processes complicates, obscures, and renders ambiguous the unique contribution of associative learning. These nonassociative processes include sensory adaptation, habituation, sensitization, and changes in feeding motivation. They arise from both the food extracts that have often been used as conditioned stimuli and the aversive stimuli that have been used as unconditioned stimuli.

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Section: Nonassociative Influences During Appetitive Chemosensory Conmentioning

confidence: 99%

Chemosensory conditioning in molluscs: II. A critical review

Farley

Jin

Huang

et al. 2004

Learning & Behavior

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“…Of all the molluscs so far studied, only Pleurobranchaea displays foraging behavior that is classically predatory in terms of its active and episodic nature. Pleurobranchaea actively pursues, subdues, and consumes a wide variety of prey Lee and Palovcik, 1976;Cattaneo-Vietti et al, 1993). The pulmo- nates and Aplysia are largely herbivorous, and all these snails express foraging habits that are best described as grazing, whether on plants or on sessile hydroids (Tritonia).…”

Section: Distribution Of Nadph-d Activity In Central and Peripheral Tmentioning

confidence: 99%

“…In the present paper we present a detailed study of NADPH-d localization in the predatory opisthobranch Pleurobranchaea californica. Pleurobranchaea is unique among the gastropods previously examined in the opportunistically gluttonous nature of its feeding behavior, in which it satisfies an entirely carnivorous appetite in episodic and intense bouts of feeding activity Lee and Palovcik, 1976;Gillette and Gillette, 1983). These characteristics contrast with the grazing herbivory of the other pulmonate and opisthobranch snails mentioned above.…”

mentioning

confidence: 99%

NADPH‐diaphorase localization in the CNS and peripheral tissues of the predatory sea‐slug Pleurobranchaea californica

Moroz¹,

Gillette²

1996

J. Comp. Neurol.

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The distribution of putative nitric oxide synthase (NOS)-containing cells in the opisthobranch mollusc Pleurobranchaea californica was studied histochemically via NADPH-diaphorase (NADPH-d) reduction of Nitro Blue Tetrazolium (NTB). Whole mounts and cryostat sections were prepared from the central nervous system and peripheral organs, including the buccal muscles, esophagus, salivary glands, foot, mantle, and gills. NADPH-d-positive neurons were localized predominantly to the buccal and pedal ganglia as well as to distinct areas of the cerebropleural and visceral ganglia. A variety of identified neurons were positive for NADPH-diaphorase in various central ganglia, including the metacerebral cells of the cerebropleural ganglion, putative locomotor neurons of the pedal ganglia, and buccal motoneurons. Specific staining was observed only in somata of central neurons, whereas neuropil areas remained unstained. However, NADPH-d-reactive axons were dense in buccal ganglion nerves, whereas peripheral nerves and connectives of other ganglia had few or no NADPH-d positive terminals. In the periphery, NADPH-d activity was detected only in a few neurons of the rhinophore and tentacle ganglia. NADPH-d staining was marked in the salivary glands and gills, but there was no or very little staining in the esophagus, buccal mass, and foot. Histochemical stain production required the presence of both beta-NADPH and NBT; alpha-NADPH could not substitute for beta-NADPH. The inhibitor of NOS, 2,6-dichlorophenol-indophenol, at 10(-3) M, totally abolished NADPH-d-positive staining. The apparent high activity of central NADPH-d contrasts with much lower activity in the ganglia of the related gastropod Tritonia. These data suggest a role for nitric oxide as a signal molecule in the central nervous system of Pleurobranchaea.

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