Olfactory control of homing behaviour in salmonids

Stabell, Ole B.

doi:10.1007/978-94-011-2332-7_12

Cited by 68 publications

(47 citation statements)

References 63 publications

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“…No marked turbidity gradient was present in the marine environment adjacent to the Sundays Estuary, yet recruitment was as successful as that recorded in the Great Fish system (Table 4 ) , suggesting that olfactory cues associated with axial salinity gradients (riverine inputs) may be more important (Stabell 1992). The abundance of larval and juvenile marine fishes in the Kariega Estuary was at a much lower level than in the Sundays or Great Fish systems (Tables 4 & 5), but the fact that immigration of fishes was still recorded (even in the absence of any river flow) suggests that additional cues may be involved in the migration process.…”

Section: Turbiditymentioning

confidence: 74%

Abundance of larval and 0+ juvenile marine fishes in the lower reaches of three southern African estuaries with differing freshwater inputs

Whitfield¹

1994

Mar. Ecol. Prog. Ser.

119

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Although numerous studies have been conducted on the biology and ecology of larval and juvenile marine fishes in estuaries, information on the factors influencing abundance, which in turn reflects the magnitude of immigration into these systems, is generally lacking. In an effort to provide some insight into the posslble role of freshwater discharge on the abundance of marine larval and juvenile fishes, 3 permanently open eastern Cape Province estuaries with similar tidal prisms and mouth dimensions, but differing riverine inputs and turbidity characteristics, were selected as study sites. The Great Fish system can be characterized as a turbid estuary (>50 NTU) with a moderate axial salinity gradient (> 20 g kg-'), the Sundays as a semi-turbid estuary (> 10 NTU) with a strong axial salinity gradient (>30 g kg-'), and the Kariega as a relatively clear estuary (< 10 NTU) with a weak axial salinity gradient (< 10 g kg-'). Although the number of marine fish taxa entering the 3 estuaries was similar (18 to 20 species), Littoral densities of larvae and 0+ juveniles in the lower reaches of the Great Fish (280 ind. 100 m-2) and Sundays (290 ind. 100 m-2) estuaries were significantly (p < 0.01) greater than those in the Kariega system (50 ind. 100 m-'). lchthyoplankton densities in the lower reaches of the 3 estuaries were highest in the Great Fish estuary (13 ind. 100 m-3), followed by the Sundays Estuary (7 ind. 100 m-3) and Kariega Estuary (4 ind. 100 m-3). Regression analyses indicated that several factors were associated wlth the abundance of the early life stages at the ichthyonekton study sites, the most important of which were estuarine axial salinity gradient, water temperature and axial turbidity gradient. The possible significance of these and other associated variables in influencing migration processes into eastern Cape estuaries is discussed.

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Section: Turbiditymentioning

confidence: 74%

Abundance of larval and 0+ juvenile marine fishes in the lower reaches of three southern African estuaries with differing freshwater inputs

Whitfield¹

1994

Mar. Ecol. Prog. Ser.

119

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“…Additionally, extreme olfactory sensitivities to bile acids, coupled with their wide distribution and chemical variations, have been implicated for their role in fish behavior (Doving et al, 1980;Hara et al, 1984;Zhang et 238 al., 2001). For instance, behavioral evidence suggests that one of their functions as olfactory stimulants is their role as pheromones for migratory anadromous fishes, some of which appear to recognize and select the odor of conspecifics when choosing spawning streams (Doving et al, 1980;Stabell, 1992). Recently, it has been shown that bile acid profiles of lake trout (Salvelinus namaycush) are largely influenced by sex and maturation stage (Zhang et al, 2001) and that bile of female Rainbow trout (Oncorhynchus mykiss) contains a pheromone (Vermeirssen & Scott, 2001).…”

Section: Introductionmentioning

confidence: 99%

Bile acids as potential pheromones in pintado catfish Pseudoplatystoma corruscans (Spix & Agassiz, 1829): eletrophysiological and behavioral studies

et al. 2015

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Bile acids are potent olfactory and gustatory stimulants for fish. Electro-olfactogram recording was used to test whether the olfactory epithelium of pintado catfish Pseudoplatystoma corruscans is specifically sensitive to bile acids, some of which have been hypothesized to function as pheromones. Five out of 30 bile acids that had been pre-screened for olfactory activity in fish were selected. Cross-adaptation experiments demonstrated that sensitivity to bile acids is attributable to at least 3 independent classes of olfactory receptor sites. The taurocholic acid (TCA) and taurochenodeoxycholic acid (TCD) were the most potent compounds. By using avoidance/preference tests, we found that P. corruscans prefers water containing TCA. Bile acids are discriminated by olfactory epithelium of pintado, supporting that these compounds could function as pheromones.Os ácidos biliares são potentes estimulantes olfatórios e gustatórios em peixes. Registros em eletro-olfactograma foram usados para testar se o epitélio olfatório de Pseudoplatystoma corruscans, pintado, é sensível aos ácidos biliares, alguns dos quais têm sido propostos como feromônios. Foram selecionados cinco de uma lista de trinta ácidos biliares previamente testados em atividade olfatória em peixes. Testes de adaptação cruzada demonstraram que a sensibilidade aos ácidos biliares se dá por 3 classes independentes de sites de receptores olfatórios. O ácido taurocólico (TCA) e o ácido tauroquenodesoxicólico (TCD) foram os compostos mais potentes. Em testes de evasão/preferência, P. corruscans prefere água contendo o ácido TCA. Os ácidos biliares são discriminadas por epitélio olfatório de pintado, evidenciando que estes compostos podem funcionar como feromônios.

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“…Wisby and Hasler [1] proposed the olfactory hypothesis that adult salmon primarily use olfactory cues during their homing migration from the coastal sea to their natal streams. The importance of olfactory function to salmon homing has been reviewed in many behavioral, electrophysiological, and neurobiological studies [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Release of dissolved free amino acids from biofilms in stream water

et al. 2010

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ABSTRACT:We investigated the origin of dissolved free amino acids (DFAA) in stream water focusing on biofilms in the river bed by means of incubation experiments in the laboratory. Stones were placed in the Toyohira River, Hokkaido, Japan, for 3 months, allowing formation of biofilms, and then incubated for 24 hours in the laboratory at stream water temperature. After incubation, the composition and concentrations of DFAA in the incubation solution and total hydrolyzed amino acids (THAA) in biofilms were measured by a high-performance liquid chromatography. The amount of chlorophyll a (Chl.a) and the number of bacteria were also measured. The DFAA concentration increased greatly in the biofilm incubation solution, but the DFAA composition (mole %) did not change relative to the inception of incubation, where it was similar to stream water. There was no correlation between the increase in DFAA concentration and the THAA concentration, Chl.a amount, or the number of bacteria in biofilms. These results suggest that biofilms are one of the major source of DFAA in stream water.

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Olfactory control of homing behaviour in salmonids

Cited by 68 publications

References 63 publications

Abundance of larval and 0+ juvenile marine fishes in the lower reaches of three southern African estuaries with differing freshwater inputs

Abundance of larval and 0+ juvenile marine fishes in the lower reaches of three southern African estuaries with differing freshwater inputs

Bile acids as potential pheromones in pintado catfish Pseudoplatystoma corruscans (Spix & Agassiz, 1829): eletrophysiological and behavioral studies

Release of dissolved free amino acids from biofilms in stream water

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