Olfaction and taste in the channel catfish: An electrophysiological study of the responses to amino acids and derivatives

Caprio, John

doi:10.1007/bf00656970

Cited by 185 publications

(121 citation statements)

References 55 publications

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“…effectiveness of bile salts relative to that for amino acids -the more well-established tastants for channel catfish (Caprio, 1978;Kohbara et al, 1992). Only prominent phasic responses were evident for both classes of stimuli (Fig.…”

Section: Characteristics Of the Integrated Taste Responses To Bile Saltsmentioning

confidence: 95%

“…The test stimuli included L-amino Alanine, arginine and proline were shown previously to be highly potent taste stimuli for the channel catfish (Caprio, 1978;Kohbara et al, 1992). The four bile salts tested in this study were selected to include two produced by the channel catfish [TCDC and TCA (Kellogg, 1975)] and two bile salts (GCDC and CDC) that have a close structural resemblance to TCDC and TCA (Fig.…”

Section: Chemical Stimulimentioning

confidence: 99%

“…Over the past 30 years, the detection and processing of amino acid stimuli by the chemosensory systems of teleosts have been well studied (Sorensen and Caprio, 1998;Caprio and Derby, 2008); however, knowledge of the response specificity of the olfactory and gustatory systems of the same species to these stimuli is sparse, especially considering the large number of teleost species that currently exist (Hara, 1975;Caprio, 1978;Goh and Tamura, 1980;Marui et al, 1983;Hara et al, 1999;Yamashita et al, 2006). For these studies, amino acids were shown to be potent stimuli for both chemosensory systems of specific species, but some major differences were indicated with respect to the relative stimulatory effectiveness of the stimuli.…”

Section: Introductionmentioning

confidence: 99%

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Bile salts are effective taste stimuli in channel catfish

Rolen

Caprio

2008

Journal of Experimental Biology

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SUMMARYBile salts are known olfactory stimuli for teleosts, but only a single report has indicated that the taste system of a fish was sensitive to this class of stimuli. Here, gustatory responses of the channel catfish, Ictalurus punctatus, to four bile salts that included taurine-, glycine-and non-conjugated compounds along with three stimulatory amino acids as a comparison were investigated using extracellular electrophysiological techniques. Integrated multiunit responses were obtained from the branch of the facial nerve innervating taste buds on the maxillary barbel. Bile salts were shown to be highly effective facial taste stimuli, with estimated electrophysiological thresholds for three of the four tested bile salts of approximately 10 -11 mol l -1 to 10 -10 mol l -1 , slightly lower by 1-2 log units than those to amino acids in the same species. Although the sensitivity of the facial taste system of the channel catfish to bile salts is high, the relative magnitude of the response to suprathreshold concentrations of bile salts was significantly less than that to amino acids. Multiunit cross-adaptation experiments indicate that bile salts and amino acids bind to relatively independent receptor sites; however, nerve-twig data and single-fiber recordings suggest that both independent and shared neural pathways exist for the transmission of bile salt and amino acid information to the primary gustatory nucleus of the medulla.

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Section: Characteristics Of the Integrated Taste Responses To Bile Saltsmentioning

confidence: 95%

Section: Chemical Stimulimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bile salts are effective taste stimuli in channel catfish

Rolen

Caprio

2008

Journal of Experimental Biology

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“…6a-d). Taking into account the well-known fact that the Cypriniformes and Characiformes are usually primarily diurnal and visually oriented, whereas the Siluriformes and Gymnotiformes are primarily nocturnal and/or inhabitants of very turbid waters, being oriented mainly by the senses of smell and tact in the case of siluriforms (see Caprio, 1978), and almost exclusively by electroreception, in the case of gymnotiforms (Albert et al, 1998;Albert, 2001), it is to be expected the presence of more complex and developed olfactory rosettes in the Siluriformes.…”

Section: Gross Brain Morphology In Other Characiformsmentioning

confidence: 99%

The brain of Brycon orbignyanus (Valenciennes, 1850) (Teleostei: Characiformes: Bryconidae): gross morphology and phylogenetic considerations

Pereira

Castro

2016

Neotrop. ichthyol.

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The brain of Brycon orbignyanus is described as a model for future studies of the gross morphology of the central nervous system in Characiformes. The study of brain gross morphology of 48 distinct taxa of Characiformes, one of Cypriniformes, two of Siluriformes and two of Gymnotiformes, allowed us to propose, for the first time, six putative brain synapomorphies for the Characiformes and also two possibly unique gross brain morphology characters for the Siluriformes. A detailed protocol for the extraction of the brain in Characiformes is also provided.O encéfalo de Brycon orbignyanus é descrito como um modelo para futuros estudos da anatomia externa do Sistema Nervoso Central de Characiformes. O estudo da morfologia externa de 48 táxons distintos de Characiformes, um de Cypriniformes, dois de Siluriformes e dois de Gymnotiformes, permitiu-nos propor, pela primeira vez, seis prováveis sinapomorfias encefálicas e também duas possíveis características encefálicas para Siluriformes. Um protocolo detalhado para a dissecção e extração do encéfalo de Characiformes é também apresentado.

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“…poissons d'espèces variées et les informations recueillies par cette méthode concernant le caractère excitateur de ces composés sur le système chimiosensoriel de ces animaux (CAPRIO, 1974(CAPRIO, , 1977(CAPRIO, , 1978GOH et TAMURA, 1978;GOH et al, 1979;HARA, 1973HARA, , 1977HARA et al, 1973;SUTTERLIN et SUTTERLIN, 1971 ;SUZUKI et TUCKER;1971), il est regrettable que ceux-ci n'aient été que si rarement suivis d'observations comportementales.…”

Section: Le Support Chimiqueunclassified

Bases chimiosensorielles du comportement alimentaire chez les poissons

Saglio

1981

Bull. Fr. Piscic.

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RESUMELe comportement alimentaire, indispensable à la survie de l'individu et donc.de l'espèce, occupe à ce titre une position de première importance dans la hiérarchie des comportements fondamentaux qui tous en dépendent très étroitement.Chez les poissons, cette prééminence se trouve illustrée par l'extrême diversité des supports sensoriels impliqués et des expressions comportementales qui leur sont liées.A la suite d'un certain nombre de mises en évidence neurophysiologiques et-étholo-giques de l'importance du sens chimique (olfaction, gustation) dans le comportement alimentaire des poissons, de très importants secteurs d'études électrophysiologiques et d'analyses physico-chimiques visant à en déterminer la nature exacte (en termes de substances actives) se sont développés ces vingt dernières années.De tous ces travaux dont les plus avancés sont présentés ici, il ressort que les acides aminés de série L plus ou moins associés à d'autres composés de poids moléculaires < ÎOOO constituent des composés chimiques 'jouant un rôle déterminant dans le comportement alimentaire de nombreuses espèces de poissons carnivores. ABSTRACTFeeding behavior, essential to both individual and species survival, .must be considered as the first fundamental behavior in so far as all the others closely depend on its occurence. In fishes, this pre-eminent position is well illustrated by the extreme diversity of sensorial paths and behavioral expressions involved. Following neurophysiological and ethological evidences of the importance of chemical sense in feeding behavior of fishes, electrophysiological and chemical analysis, dealing more precisely with the identity of the chemicals involved, have been widely worked out these last two decades.

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Olfaction and taste in the channel catfish: An electrophysiological study of the responses to amino acids and derivatives

Cited by 185 publications

References 55 publications

Bile salts are effective taste stimuli in channel catfish

Bile salts are effective taste stimuli in channel catfish

The brain of Brycon orbignyanus (Valenciennes, 1850) (Teleostei: Characiformes: Bryconidae): gross morphology and phylogenetic considerations

Bases chimiosensorielles du comportement alimentaire chez les poissons

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