ScholarLens Back to search
1997•EcologyRequires access

INTRAPOPULATION FEEDING DIVERSITY IN BLUE TILAPIA: EVIDENCE FROM STABLE-ISOTOPE ANALYSES

Binhe Gu, Claire L. Schelske, Mark V. Hoyer

Open publisher page 78 citations

Abstract

Stable carbon and nitrogen isotopes (δ13C and δ15N) in animal tissues are largely determined by isotope composition of assimilated food. Variations in δ13C and δ15N values within a fish population are often small as a result of feeding on the same food source. We report here, however, strikingly broad ranges of δ13C (−25.9 to −9.5‰) and δ15N (5.8 to 14.4‰) in an exotic fish from a Florida lake. Together with isotope data for food sources and gut contents, we demonstrate significant diet variation within a population of blue tilapia.

About this research paper

What this paper is about

Stable carbon and nitrogen isotopes (δ13C and δ15N) in animal tissues are largely determined by isotope composition of assimilated food. Variations in δ13C and δ15N values within a fish population are often small as a result of feeding on the same food source. We report here, however, strikingly broad ranges of δ13C (−25.9 to −9.5‰) and δ15N (5.8 to 14.4‰) in an exotic fish from a Florida lake. Together with isotope data for food sources and gut contents, we demonstrate significant diet variation within a population of blue tilapia.

Why it matters

OpenAlex reports 78 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Stable carbon and nitrogen isotopes (δ13C and δ15N) in animal tissues are largely determined by isotope composition of assimilated food. Variations in δ13C and δ15N values within a fish population are often small as a result of feeding on the same food source. We report here, however, strikingly broad ranges of δ13C (−25.9 to −9.5‰) and δ15N (5.8 to 14.4‰) in an exotic fish from a Florida lake. Together with isotope data for food sources and gut contents, we demonstrate significant diet variation within a population of blue tilapia.

Key concepts: δ13C, δ15N, Stable isotope ratio, Biology, Population, Isotopes of carbon, Isotopes of nitrogen, Ecology

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
INTRAPOPULATION FEEDING DIVERSITY IN BLUE TILAPIA: EVIDENCE FROM STABLE-ISOTOPE ANALYSES — Research Paper | ScholarLens