| Effects of river flows on growth of redbreast sunfish Lepomis auritus (Centrarchidae) in Georgia rivers. | |
| | |
MedLine Citation:
|
PMID: 20735655 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Effects of river discharge on growth of redbreast sunfish Lepomis auritus were investigated in nine rivers in Georgia, U.S.A. Fish were aged and annular total length increments (L(Tinc)) estimated from measurements from sectioned sagittal otoliths using the generalized regression model that held for the effects of decreasing L(Tinc) from annual age (X): L(Tinc)=b(o)-b(1)(X) +/-b(i)(D), where b(o), b(1) and b(i) were the regression coefficients for the intercept and slopes and D, discharge, was either a single or multiple measurements of annular or seasonal flow volume or variation in flow volume. For eight of nine rivers, higher or greater variation in flows from April to June was associated with greater L. auritus growth; in the last river, higher flows from January to March were associated with greater fish growth. Across all rivers, L. auritus growth increments were 22, 45 and 36% greater in a wet year v. a dry year at ages 1, 2 and 3 years, respectively. Based on the results of this study, increasing water withdrawals by an additional 30% in five Georgia rivers would reduce the predicted number of L. auritus recruiting to 203 mm (angler preferred size) by 19-62%. |
| | |
Authors:
|
S M Sammons; M J Maceina |
Related Documents
:
|
18033295 - Onset of submarine debris flow deposition far from original giant landslide. 19955685 - High-flow priapism in a 12-year-old boy: treatment with superselective embolization. 9474155 - Functional anatomy of cavernous helicine arterioles in potent subjects. 14621145 - Removal of indicator bacteria from municipal wastewater in an experimental two-stage ve... 4003775 - Influence of fentanyl and morphine on intestinal circulation. 2636815 - Comparison of the cardiovascular effects of three dihydropyridine compounds. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of fish biology Volume: 74 ISSN: 1095-8649 ISO Abbreviation: J. Fish Biol. Publication Date: 2009 May |
Date Detail:
|
Created Date: 2010-08-25 Completed Date: 2010-11-23 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0214055 Medline TA: J Fish Biol Country: England |
Other Details:
|
Languages: eng Pagination: 1580-93 Citation Subset: IM |
Affiliation:
|
Department of Fisheries and Allied Aquacultures, 203 Swingle Hall, Auburn University, AL 36849, USA. sammosm@auburn.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Georgia Models, Biological Perciformes / growth & development* Rivers* Seasons Water Movements* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Behavioural thermoregulation by subyearling fall (autumn) Chinook salmon Oncorhynchus tshawytscha in...
Next Document: How normal is abnormal? Discrimination between deformations and natural variation in gonad morpholog...