| Does sympatry affect trophic resource use in congeneric tidepool fishes? A tale of two gobies Favonigobius lentiginosus and Favonigobius exquisitus. | |
| | |
MedLine Citation:
|
PMID: 22141899 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
The feeding ecology of two sympatric gobies, Favonigobius lentiginosus and Favonigobius exquisitus, which inhabit soft substrate pools was studied in Moreton Bay, Australia. Favonigobius spp. and sediment cores were collected from three locations within the bay and fish gut contents were analysed to explore potential competition and ontogenetic dietary shifts. The most abundant prey at all sites was nematodes at 6·33 ± 0·38 cm(-3) at Dunwich, 33·58 ± 0·26 cm(-3) at Manly and 6·36 ± 0·849 cm(-3) (mean ±s.e.) at Godwin Beach. Nevertheless, they were not a dominant component of the diets. Volumetric percent contribution of prey showed that copepods and decapod shrimps dominated F. lentiginosus diets at Dunwich (7·8 and 6·6%, respectively) and Godwin Beach (6·5 and 14·3%, respectively) and the diets of F. exquisitus at Manly (9·2 and 9·5%, respectively) and Godwin Beach (10·4 and 11·8%, respectively). Schoener's index of dietary overlap between the two species, when sympatric, was 0·85 indicating a high similarity. An ontogenetic shift towards larger prey items occurred as Favonigobius spp. reached larger sizes. Gut fullness indices showed significant differences between time of day (two-way ANOVA, P < 0·01) and species (two-way ANOVA, P < 0·05) but Bonferroni's multiple comparison test showed that the only significant difference was between F. lentiginosus at Dunwich and F. exquisitus at Godwin Beach at 1800 hours. Food resource competition and temporal resource partitioning did not appear to be a limiting factor between F. lentiginosus and F. exquisitus despite cohabitation in such restricted environments. |
| | |
Authors:
|
C A Chargulaf; N C Krück; I R Tibbetts |
Related Documents
:
|
2806349 - Revised model for the study of colonic anastomotic healing in protein malnourished rats. 18567619 - Upregulation of p21waf1/cip1 expression in vivo by butyrate administration can be chemo... 11478319 - Orotic acid, a new promoter for experimental liver carcinogenesis. 10625939 - Prevention of colon carcinogenesis by components of dietary fiber. 9096389 - Dietary fat influences on polyp phenotype in multiple intestinal neoplasia mice. 3804119 - Histopathological and radioautographical studies on the forestomach of f344 rats treate... 19871069 - Cirrhosis of the liver caused by excess dietary cystine. 7568319 - Extractum fagopyri reduces atherosclerosis in high-fat diet fed rabbits. 1159529 - Effects of carbohydrate-free diets on the insulin-carbohydrate relationships in rats. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of fish biology Volume: 79 ISSN: 1095-8649 ISO Abbreviation: J. Fish Biol. Publication Date: 2011 Dec |
Date Detail:
|
Created Date: 2011-12-06 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0214055 Medline TA: J Fish Biol Country: England |
Other Details:
|
Languages: eng Pagination: 1968-83 Citation Subset: IM |
Copyright Information:
|
© 2011 The Authors. Journal of Fish Biology © 2011 The Fisheries Society of the British Isles. |
Affiliation:
|
School of Biological Sciences, The University of Queensland, St Lucia, Qld 4072, Australia. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Effect of salinity on growth of Abant trout Salmo trutta abanticus.
Next Document: Reef fish structure and distribution in a south-western Atlantic Ocean tropical island.