Free Content Consumer Trophic Relations in a Tropical Insular Estuary

 Download
(PDF 533.5kb)
 
Download Article:

Abstract:

All of the common consumers (6 species of crustaceans and 10 species of fishes) of a representative Hawaiian estuary were included in a study to determine the types, amounts, and sources of foods eaten by estuarine macrofauna. Stomachs of 2,146 specimens, collected by seining seven sites on 42 dates, were examined and the material they contained was arranged into eight trophically ordered food groups. Consumers were ranked on a trophic scale of 1 (lowest herbivore) to 10 (highest carnivore) based on the proportions of each food group they ate. Community trophic relations were described by integrating diets of species and populations in trophic spectra (modified from Darnell, 1961). Comparisons showed that the community contained three high carnivores, three herbivore-detritivores, and 10 omnivores; most of the total community food was consumed by Eleotris sandwicensis and Mugil cephalus, as indicated by their predominant population biomasses. Detritus and benthic invertebrates were the foods eaten in greatest amounts by the community. Differences in diets of a consumer with size class and capture location were demonstrated.

Document Type: Research Article

Publication date: July 1, 1981

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more