EsturgeonV1, PascalFrancis, Corpus, bibRecord, 000197

The effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris

Identifieur interne : 000197 ( PascalFrancis/Corpus ); précédent : 000196; suivant : 000198

The effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris

Auteurs : Rosalee M. Nguyen ; Carlos E. Crocker

Source :

Environmental biology of fishes [ 0378-1909 ] ; 2006.

RBID : Pascal:06-0464157

Descripteurs français

Pascal (Inist)
- Substrat, Composition, Fourragement, Taux croissance, Larve, Anadromie, Pisces, Acipenser sturio.

English descriptors

KwdEn :
- Acipenser sturio, Anadromy, Composition, Foraging behavior, Growth rate, Larva, Pisces, Substrate.

Abstract

We investigated the effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris, in the laboratory at 20±1°C over a period of 5 weeks. Larval groups (n = 100) with mean wet weight (0.72 ± 0.01 g) at 50 days post-hatch were reared on slaterocks, cobble, sand or glass. Typically, fish were negatively rheotactic and exhibited dispersed skimming behaviors on provided substrates during pre-feeding and feeding, respectively, but were all positively rheotactic during feeding. Fish reared on slate-rock substrates were negatively phototactic, remained benthic, and aggregated underneath the substrates. In all substrates except slate-rocks, fish displayed frequent episodes of burst and glide swimming activity, tank wall skimming and vertical swimming behaviors, however these behaviors ceased immediately during feeding and reappeared at the end of the feeding period. Substrate composition led to variable foraging effectiveness and likely contributed to significant differences in specific growth rates (2.28, 1.14, 1.77, and 2.27% body weight per day) and mortality (7%, 40%, 11%, 0%) among the treatment groups; slate-rocks, cobble, sand, and glass, respectively. There were no significant differences in morphometrics, somatotopic indices, and whole-body lipid content among treatment groups at the end of the experiment. The present findings indicate that certain substrates in artificial/natural habitats may negatively affect larval growth and may lead to decreased recruitment of juvenile green sturgeon in the wild.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A02	`01`			`@0 EBFID3`
A03		`1`		`@0 Environ. biol. fishes`
A05				`@2 76`
A06				`@2 2-4`
A08	`01`	`1`	`ENG`	`@1 The effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris`
A11	`01`	`1`		`@1 NGUYEN (Rosalee M.)`
A11	`02`	`1`		`@1 CROCKER (Carlos E.)`
A14	`01`			`@1 Department of Biology, San Francisco State University, 1600 Holloway Avenue @2 San Francisco, CA 94132 @3 USA @Z 1 aut. @Z 2 aut.`
A20				`@1 129-138`
A21				`@1 2006`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 17564 @5 354000157159320020`
A44				`@0 0000 @1 © 2006 INIST-CNRS. All rights reserved.`
A45				`@0 26 ref.`
A47	`01`	`1`		`@0 06-0464157`
A60				`@1 P`
A61				`@0 A`
A64	`01`	`1`		`@0 Environmental biology of fishes`
A66	`01`			`@0 NLD`
C01	`01`		`ENG`	@0 We investigated the effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris, in the laboratory at 20±1°C over a period of 5 weeks. Larval groups (n = 100) with mean wet weight (0.72 ± 0.01 g) at 50 days post-hatch were reared on slaterocks, cobble, sand or glass. Typically, fish were negatively rheotactic and exhibited dispersed skimming behaviors on provided substrates during pre-feeding and feeding, respectively, but were all positively rheotactic during feeding. Fish reared on slate-rock substrates were negatively phototactic, remained benthic, and aggregated underneath the substrates. In all substrates except slate-rocks, fish displayed frequent episodes of burst and glide swimming activity, tank wall skimming and vertical swimming behaviors, however these behaviors ceased immediately during feeding and reappeared at the end of the feeding period. Substrate composition led to variable foraging effectiveness and likely contributed to significant differences in specific growth rates (2.28, 1.14, 1.77, and 2.27% body weight per day) and mortality (7%, 40%, 11%, 0%) among the treatment groups; slate-rocks, cobble, sand, and glass, respectively. There were no significant differences in morphometrics, somatotopic indices, and whole-body lipid content among treatment groups at the end of the experiment. The present findings indicate that certain substrates in artificial/natural habitats may negatively affect larval growth and may lead to decreased recruitment of juvenile green sturgeon in the wild.
C02	`01`	`X`		`@0 002A14B02C2A`
C02	`02`	`X`		`@0 002A15B`
C03	`01`	`X`	`FRE`	`@0 Substrat @5 01`
C03	`01`	`X`	`ENG`	`@0 Substrate @5 01`
C03	`01`	`X`	`SPA`	`@0 Substrato @5 01`
C03	`02`	`X`	`FRE`	`@0 Composition @5 02`
C03	`02`	`X`	`ENG`	`@0 Composition @5 02`
C03	`02`	`X`	`SPA`	`@0 Composicion @5 02`
C03	`03`	`X`	`FRE`	`@0 Fourragement @5 03`
C03	`03`	`X`	`ENG`	`@0 Foraging behavior @5 03`
C03	`03`	`X`	`SPA`	`@0 Conducta abastecimiento @5 03`
C03	`04`	`X`	`FRE`	`@0 Taux croissance @5 04`
C03	`04`	`X`	`ENG`	`@0 Growth rate @5 04`
C03	`04`	`X`	`SPA`	`@0 Tasa crecimiento @5 04`
C03	`05`	`X`	`FRE`	`@0 Larve @5 05`
C03	`05`	`X`	`ENG`	`@0 Larva @5 05`
C03	`05`	`X`	`SPA`	`@0 Larva @5 05`
C03	`06`	`X`	`FRE`	`@0 Anadromie @5 06`
C03	`06`	`X`	`ENG`	`@0 Anadromy @5 06`
C03	`06`	`X`	`SPA`	`@0 Anadromia @5 06`
C03	`07`	`X`	`FRE`	`@0 Pisces @2 NS @5 07`
C03	`07`	`X`	`ENG`	`@0 Pisces @2 NS @5 07`
C03	`07`	`X`	`SPA`	`@0 Pisces @2 NS @5 07`
C03	`08`	`X`	`FRE`	`@0 Acipenser sturio @2 NS @5 49`
C03	`08`	`X`	`ENG`	`@0 Acipenser sturio @2 NS @5 49`
C03	`08`	`X`	`SPA`	`@0 Acipenser sturio @2 NS @5 49`
C07	`01`	`X`	`FRE`	`@0 Vertebrata @2 NS`
C07	`01`	`X`	`ENG`	`@0 Vertebrata @2 NS`
C07	`01`	`X`	`SPA`	`@0 Vertebrata @2 NS`
C07	`02`	`X`	`FRE`	`@0 Acipenseridae @4 INC @5 70`
N21				`@1 303`
N44	`01`			`@1 OTO`
N82				`@1 OTO`

Format Inist (serveur)

NO :	PASCAL 06-0464157 INIST
ET :	The effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris
AU :	NGUYEN (Rosalee M.); CROCKER (Carlos E.)
AF :	Department of Biology, San Francisco State University, 1600 Holloway Avenue/San Francisco, CA 94132/Etats-Unis (1 aut., 2 aut.)
DT :	Publication en série; Niveau analytique
SO :	Environmental biology of fishes; ISSN 0378-1909; Coden EBFID3; Pays-Bas; Da. 2006; Vol. 76; No. 2-4; Pp. 129-138; Bibl. 26 ref.
LA :	Anglais
EA :	We investigated the effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris, in the laboratory at 20±1°C over a period of 5 weeks. Larval groups (n = 100) with mean wet weight (0.72 ± 0.01 g) at 50 days post-hatch were reared on slaterocks, cobble, sand or glass. Typically, fish were negatively rheotactic and exhibited dispersed skimming behaviors on provided substrates during pre-feeding and feeding, respectively, but were all positively rheotactic during feeding. Fish reared on slate-rock substrates were negatively phototactic, remained benthic, and aggregated underneath the substrates. In all substrates except slate-rocks, fish displayed frequent episodes of burst and glide swimming activity, tank wall skimming and vertical swimming behaviors, however these behaviors ceased immediately during feeding and reappeared at the end of the feeding period. Substrate composition led to variable foraging effectiveness and likely contributed to significant differences in specific growth rates (2.28, 1.14, 1.77, and 2.27% body weight per day) and mortality (7%, 40%, 11%, 0%) among the treatment groups; slate-rocks, cobble, sand, and glass, respectively. There were no significant differences in morphometrics, somatotopic indices, and whole-body lipid content among treatment groups at the end of the experiment. The present findings indicate that certain substrates in artificial/natural habitats may negatively affect larval growth and may lead to decreased recruitment of juvenile green sturgeon in the wild.
CC :	002A14B02C2A; 002A15B
FD :	Substrat; Composition; Fourragement; Taux croissance; Larve; Anadromie; Pisces; Acipenser sturio
FG :	Vertebrata; Acipenseridae
ED :	Substrate; Composition; Foraging behavior; Growth rate; Larva; Anadromy; Pisces; Acipenser sturio
EG :	Vertebrata
SD :	Substrato; Composicion; Conducta abastecimiento; Tasa crecimiento; Larva; Anadromia; Pisces; Acipenser sturio
LO :	INIST-17564.354000157159320020
ID :	06-0464157

Links to Exploration step

Pascal:06-0464157

Le document en format XML

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<front><div type="abstract" xml:lang="en">We investigated the effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris, in the laboratory at 20±1°C over a period of 5 weeks. Larval groups (n = 100) with mean wet weight (0.72 ± 0.01 g) at 50 days post-hatch were reared on slaterocks, cobble, sand or glass. Typically, fish were negatively rheotactic and exhibited dispersed skimming behaviors on provided substrates during pre-feeding and feeding, respectively, but were all positively rheotactic during feeding. Fish reared on slate-rock substrates were negatively phototactic, remained benthic, and aggregated underneath the substrates. In all substrates except slate-rocks, fish displayed frequent episodes of burst and glide swimming activity, tank wall skimming and vertical swimming behaviors, however these behaviors ceased immediately during feeding and reappeared at the end of the feeding period. Substrate composition led to variable foraging effectiveness and likely contributed to significant differences in specific growth rates (2.28, 1.14, 1.77, and 2.27% body weight per day) and mortality (7%, 40%, 11%, 0%) among the treatment groups; slate-rocks, cobble, sand, and glass, respectively. There were no significant differences in morphometrics, somatotopic indices, and whole-body lipid content among treatment groups at the end of the experiment. The present findings indicate that certain substrates in artificial/natural habitats may negatively affect larval growth and may lead to decreased recruitment of juvenile green sturgeon in the wild.</div>
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<server><NO>PASCAL 06-0464157 INIST</NO>
<ET>The effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris</ET>
<AU>NGUYEN (Rosalee M.); CROCKER (Carlos E.)</AU>
<AF>Department of Biology, San Francisco State University, 1600 Holloway Avenue/San Francisco, CA 94132/Etats-Unis (1 aut., 2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Environmental biology of fishes; ISSN 0378-1909; Coden EBFID3; Pays-Bas; Da. 2006; Vol. 76; No. 2-4; Pp. 129-138; Bibl. 26 ref.</SO>
<LA>Anglais</LA>
<EA>We investigated the effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris, in the laboratory at 20±1°C over a period of 5 weeks. Larval groups (n = 100) with mean wet weight (0.72 ± 0.01 g) at 50 days post-hatch were reared on slaterocks, cobble, sand or glass. Typically, fish were negatively rheotactic and exhibited dispersed skimming behaviors on provided substrates during pre-feeding and feeding, respectively, but were all positively rheotactic during feeding. Fish reared on slate-rock substrates were negatively phototactic, remained benthic, and aggregated underneath the substrates. In all substrates except slate-rocks, fish displayed frequent episodes of burst and glide swimming activity, tank wall skimming and vertical swimming behaviors, however these behaviors ceased immediately during feeding and reappeared at the end of the feeding period. Substrate composition led to variable foraging effectiveness and likely contributed to significant differences in specific growth rates (2.28, 1.14, 1.77, and 2.27% body weight per day) and mortality (7%, 40%, 11%, 0%) among the treatment groups; slate-rocks, cobble, sand, and glass, respectively. There were no significant differences in morphometrics, somatotopic indices, and whole-body lipid content among treatment groups at the end of the experiment. The present findings indicate that certain substrates in artificial/natural habitats may negatively affect larval growth and may lead to decreased recruitment of juvenile green sturgeon in the wild.</EA>
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The effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris

The effects of substrate composition on foraging behavior and growth rate of larval green sturgeon, Acipenser medirostris

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