Prey selection and functional response of juvenile lemon sharks Negaprion brevirostris.

A Reeve; RD Handy; SH Gruber

doi:10.1111/j.1095-8649.2009.02265.x

Prey selection and functional response of juvenile lemon sharks Negaprion brevirostris.

A Reeve, RD Handy, SH Gruber

School of Biological and Marine Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

Prey preference of juvenile lemon sharks Negaprion brevirostris was examined in experiments conducted in field-based pens where the fish were offered meals of live teleosts: grey snapper Lutjanus griseus and yellow fin majorra Gerres cinereus in ratios of L. griseus:G. cinereus varying from 10:0 to 2:8. Relative electivity indices for each treatment showed that N. brevirostris preyed on G. cinereus rather than L. griseus. They showed a prey preference relating to density of G. cinereus (type II functional response) but not to L. griseus.

Original language	English
Pages (from-to)	276-281
Number of pages	0
Journal	J Fish Biol
Volume	75
Issue number	1
DOIs	https://doi.org/10.1111/j.1095-8649.2009.02265.x
Publication status	Published - Jul 2009

Keywords

Animals
Food Preferences
Perciformes
Population Density
Predatory Behavior
Sharks

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10.1111/j.1095-8649.2009.02265.x

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abstract = "Prey preference of juvenile lemon sharks Negaprion brevirostris was examined in experiments conducted in field-based pens where the fish were offered meals of live teleosts: grey snapper Lutjanus griseus and yellow fin majorra Gerres cinereus in ratios of L. griseus:G. cinereus varying from 10:0 to 2:8. Relative electivity indices for each treatment showed that N. brevirostris preyed on G. cinereus rather than L. griseus. They showed a prey preference relating to density of G. cinereus (type II functional response) but not to L. griseus.",

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AB - Prey preference of juvenile lemon sharks Negaprion brevirostris was examined in experiments conducted in field-based pens where the fish were offered meals of live teleosts: grey snapper Lutjanus griseus and yellow fin majorra Gerres cinereus in ratios of L. griseus:G. cinereus varying from 10:0 to 2:8. Relative electivity indices for each treatment showed that N. brevirostris preyed on G. cinereus rather than L. griseus. They showed a prey preference relating to density of G. cinereus (type II functional response) but not to L. griseus.

KW - Animals

KW - Food Preferences

KW - Perciformes

KW - Population Density

KW - Predatory Behavior

KW - Sharks

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DO - 10.1111/j.1095-8649.2009.02265.x

M3 - Article

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VL - 75

SP - 276

EP - 281

JO - J Fish Biol

JF - J Fish Biol

IS - 1

ER -

Prey selection and functional response of juvenile lemon sharks Negaprion brevirostris.

Abstract

Keywords

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