Bile salts and taurine as chemical stimuli for glass eels,Anguilla anguilla: a behavioural study

Sola, C. Ralph de; Tosi, Laura L.

doi:10.1007/bf00000595

Cited by 51 publications

(25 citation statements)

References 20 publications

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“…Alternatively, individuals could assess local conspecific density passively using odor and modify their growth trajectory and sexual development in response to the potential for competitive bottlenecks in the future (McCleave and Jellyman, 2004). Eels have a well developed olfactory system and are highly sensitive to chemicals such as catabolic by-products produced by conspecifics (Miles, 1968;Pesaro et al, 1981;Sorensen, 1986;Sola and Tosi, 1993). The accumulation of odors at high concentrations is likely in aquaculture facilities that use recirculating systems, and may potentially explain the preponderance of males under such conditions.…”

Section: Densitymentioning

confidence: 99%

Sex Determination in Freshwater Eels and Management Options for Manipulation of Sex

Davey

Jellyman

2005

Rev Fish Biol Fisheries

162

114

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Section: Densitymentioning

confidence: 99%

Sex Determination in Freshwater Eels and Management Options for Manipulation of Sex

Davey

Jellyman

2005

Rev Fish Biol Fisheries

162

114

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“…Sexually mature sea lampreys innately recognize a mixture of species-specific bile salts (Li et al, 1995;Li et al, 2002;Fine et al, 2004;Sorensen et al, 2005) and select for streams containing populations of sea lamprey larvae, indicative of suitable spawning grounds (Bjerselius et al, 2000;Polkinghorne et al, 2001;Vrieze and Sorensen, 2001;Fine and Sorensen, 2005). Previous investigations demonstrated that freshwater eels (Sola and Tosi, 1993), Artic char (Jones and Hara, 1985) and cod (Hellstrøm and Døving, 1986) respond to synthetic bile salts, with activities classified as orientation and snapping. Furthermore, Hellstrøm and Døving (Hellstrøm and Døving, 1986) showed that TCA was detected in the absence of a functioning olfactory system.…”

Section: Behavioral Implicationsmentioning

confidence: 99%

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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“…Intestinal extracts and synthetic bile salts have been shown to attract salmonids in laboratory tanks (Selset and D~ring, 1980;Jones and Ham, 1985;Stabell, 1987). Strong attractive behaviour to bile salts exhibited by the glass eels of Anguilla anguilla (Anguillidae) (Sola and Tosi, 1993) further provides evidence that fish employ chemical cues emanating from conspecifics to recognize siblings, to locate spawning grounds (Foster, 1985), and to orientate to native streams.…”

Section: Bile Saltsmentioning

confidence: 99%