Environmental Correlates of the Freshwater Migration of Elvers of the American Eel in a Rhode Island Brook

Sorensen, Peter W.; Bianchini, M.L.

doi:10.1577/1548-8659(1986)115<258:ecotfm>2.0.co;2

Cited by 66 publications

(55 citation statements)

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“…This delay was first linked with salinity or temperature conditions (CREUTZBERG, 1961). But other authors have argued that this delay might be needed for morphological (JELLYMAN, 1977), or physiological adaptation (DEELDER, 1958;SORENSEN and BIANCHINI, 1986;McCLEAVE and WIPPELHAUSER, 1987;PEASE et al, 2003). The glass eels collected in the downstream sector of estuaries are able to challenge the transfer to freshwater at 15°C (WILSON et al, 2004).…”

Section: Delay Between Stst and Active Migrationmentioning

confidence: 99%

“…Threshold temperatures of 9-10°C were described for Anguilla austalis and Anguilla dieffenbachii by (JELLYMAN, 1977;SLOANE, 1984). In Anguilla rostrata, temperatures increasing from 12°C to 19°C triggered the onset of freshwater migration in glass eels caught with bottom traps (SORENSEN and BIANCHINI, 1986), and river temperatures were described as the most important factor determining the first migration towards fresh water (MARTIN, 1995). Stream temperatures of 10 to 12°C were described as a gating factor for elver runs, but to have a limited influence once this threshold was attained (JESSOP, 2003).…”

Section: Delay Between Stst and Active Migrationmentioning

confidence: 99%

“…The location of this accumulation area depends on the strength of tide and the freshwater discharge (GASCUEL, 1986). Therefore, the density of glass eels increases from the mouth of the estuary towards freshwater and then decreases sharply from the accumulation point (TESCH, 2003;SHELDON and McCLEAVE, 1985;SORENSEN and BIANCHINI, 1986;DE CASAMAJOR, 1998). The spatial variation can be matched with a temporal evolution, with an increasing abundance from December to March-April, although the observation of such trends would depend on the balance between recruitment and exploitation by the glass eel fisheries (GASCUEL et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

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Estimating the Stock of Glass Eels in an Estuary by Mark-Recapture Experiments Using Vital Dyes

Briand¹,

Fatin²,

Feunteun³

et al. 2005

Bull. Fr. Pêche Piscic.

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Glass eels (Anguilla anguilla) arriving after the fishing season in the Vilaine estuary (France) were caught by boat and at a trapping ladder located at a blocking dam upstream in the estuary. They were marked with Bismarck brown, rhodamine B or neutral red, and released into the estuary. The effect of marking on behaviour, mortality and recapture differed according to the dye and concentration used. The glass eels also differed in response to marking according to their origin. Estuarine glass eels were clearly desynchronized in their selective tidal stream transport and left the release area after a few tidal cycles. Trapped glass eels were less sensitive to marking. They remained in the release area and were recaptured in larger number both in the trapping ladder and in the estuary. These results supported a model of two behavioral fractions in the estuary: flow-carried migrants and active glass eels with stronger rheotactic behaviour. The proportion of active glass eels in the estuary shifted from none for the two weeks after the fishery closure, to 10% value of the total stock. At the trapping ladder, the migration ended in June each year, while a large stock was still present in the estuary. These observations favour the interpretation of a short duration of the active phase at this site followed by the transition towards a more benthic behavior. The daily efficiency of the trapping ladder was calculated as 4% of the active stock from both stock estimations and average recapture rate. This value was consistent with the low annual efficiency of the trapping ladder, calculated as 30% of the estuarine stock of glass eels that arrived after the fishing season. Key-words:Anguilla anguilla, vital dye, glass eel, marking recapture. ESTIMATION DE STOCK DE CIVELLES EN ESTUAIRE PAR MARQUAGE-RECAPTURES À L'AIDE DE COLORANTS VITAUX RÉSUMÉLes civelles (Anguilla anguilla) arrivant après la fin de la saison de pêche dans l'estuaire de la Vilaine (France) ont été capturées à l'aide d'un bateau de pêche et sur une passe piège située à l'amont de l'estuaire sur le barrage qui limite la progression du stock migrant. Elles ont ensuite été marquées à l'aide de Brun-Bismarck, rhodamine B et rouge neutre et relâchées en estuaire. L'effet du marquage sur le comportement, la mortalité et les recaptures, a différé en fonction du colorant et de la concentration utilisés. Les civelles ont également montré une réponse différente au marquage en fonction de leur origine. Celles qui étaient prélevées en estuaire étaient clairement désynchronisées dans leur transport tidal sélectif et ont quitté la zone de lâché après quelques cycles de marées. Celles qui provenaient de la passe ont été moins sensibles au marquage. Elles sont restées dans la zone de lâché, et ont été recapturées en plus grand nombre à la fois dans la passe et dans l'estuaire. Ces résultats permettent de proposer un modèle ou deux fractions comportementales sont distinguées dans l'estuaire, des civelles en phase de migration portée et des civelles en migration acti...

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Section: Delay Between Stst and Active Migrationmentioning

confidence: 99%

Section: Delay Between Stst and Active Migrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Estimating the Stock of Glass Eels in an Estuary by Mark-Recapture Experiments Using Vital Dyes

Briand¹,

Fatin²,

Feunteun³

et al. 2005

Bull. Fr. Pêche Piscic.

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“…The spawning location and season have been described for some species of temperate eels (Schmidt 1922, Tsukamoto 1992, and there have been various studies on the glass eels Anguilla japonica (Matsui 1952, Tzeng 1985, Tsukamoto 1990, Cheng & Tzeng 1996, Arai et al 1997, A. anguillla (Deelder 1952, Creutzberg 1958, Gandolfi et al 1984, Gascuel 1986, Tongiorgi et al 1986, Lecomte-Finiger 1992, Arai et al 2000, A. rostrata (Sorensen 1986, Sorensen & Bianchini 1986, Wippelhauser & McCleave 1987, Haro & Krueger 1988, Martin 1995, Wang & Tzeng 1998, Arai et al 2000), and A. australis and A. dieffenbachi (Jellyman 1977, 1979, Todd 1981, Sloane 1984, Arai et al 1999b, Jellyman et al 1999, Marui et al 2001. Some of these studies have described the larval duration and growth, timing of metamorphosis and recruitment to coastal waters, or timing of inshore migration of glass eels and elvers in relation to environmental factors such as temperature, salinity, tide cycle, and lunar phase.…”

Section: Introductionmentioning

confidence: 99%

Inshore migration of the tropical eels Anguilla spp. recruiting to the Poigar River estuary on north Sulawesi Island

Sugeha¹,

Arai²,

Miller³

et al. 2001

Mar. Ecol. Prog. Ser.

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To understand ecological and behavioral aspects of inshore migration of tropical eels, Anguilla spp., we collected 32 836 glass eels in the Poigar River estuary on north Sulawesi Island, Indonesia, in monthly collections from 1997 to 1999. The specimens were identified using morphological characters, and 3 species, A. celebesensis, A. marmorata, and A. bicolor pacifica, were found each year in fluctuating abundances. A. celebesensis was the most abundant species and comprised 73.5, 79.5, and 81.9% of all glass eels recruiting to the estuary of the Poigar River in 1997, 1998, and 1999, respectively. This species was relatively abundant in all 3 years with peaks during June in 1997 and 1998, and during September in 1999. A. marmorata was the second most abundant species and comprised 23.8, 18.8, and 17.7% of the yearly catches, respectively, and reached peaks in abundance during June in 1997 and 1998, and during January in 1999. A. bicolor pacifica comprised only 2.7, 1.7, and 0.3% of the yearly catches, respectively, with peak catches in June in 1997, in January in 1998, and in January and February in 1999. A. celebesensis and A. marmorata were collected almost throughout the year in 1997, 1998, and 1999, suggesting that in contrast to the temperate eels that recruit during half the year from winter to spring, these tropical eel species recruit to some degree throughout the year. Glass eels clearly were more abundant during new moon sampling events, with a total of 3075, 183, 3, and 90 glass eels collected in 10 sampling periods during new moon, waxing moon, full moon, and waning moon, respectively. All glass eels were collected at night (18:00 to 05:00 h) when light intensity ranged from 0 to 1.86 lux, and no glass eels were collected during the day (06:00 to 17:00 h) when light intensity ranged from 500 to 150 000 lux. During new moon, more glass eels were collected during flood tide than during ebb tide. These results suggest that a greater number of glass eels recruited to the Poigar River estuary at night, during new moon and during flood tide.

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“…D'après de nombreux auteurs, l'apparition des forts coefficients de marée correspond à une augmentation des captures et à une intensification du flux migratoire (FERNANDEZ et VASQUEZ, 1978 ;CHARLON, 1980 ;SORENSEN et BIANCHINI, 1986 ;ROCHARD, 1992). Il est parfois difficile de dissocier réellement à partir de ces travaux, les effets des cycles de marée et de la clarté lunaire.…”

Section: Importance De La Luminosité Nocturneunclassified

Fluctuations Des Captures De Civelles (Anguilla Anguilla L.) Et Analyse De La Variation De Leur Capturabilité Dans l'ESTUAIRE De L'adour.

Casamajor

Bru

Prouzet

2001

Bull. Fr. Pêche Piscic.

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Environmental Correlates of the Freshwater Migration of Elvers of the American Eel in a Rhode Island Brook

Cited by 66 publications

References 0 publications

Estimating the Stock of Glass Eels in an Estuary by Mark-Recapture Experiments Using Vital Dyes

Estimating the Stock of Glass Eels in an Estuary by Mark-Recapture Experiments Using Vital Dyes

Inshore migration of the tropical eels Anguilla spp. recruiting to the Poigar River estuary on north Sulawesi Island

Fluctuations Des Captures De Civelles (Anguilla Anguilla L.) Et Analyse De La Variation De Leur Capturabilité Dans l'ESTUAIRE De L'adour.

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