Diet composition in San Francisco Estuary striped bass : does trophic adaptability have its limits? - Forums
Striped Bass Fishing Site Map | Contact Us | Fishing Log Software | Fishing Online | Advertise
to UPLOAD: please register or login

Go Back Forums > Striper Information & Services > Reference Library
Forgot Password? Register Now!!

Reference Library Here you can find or post articles on interesting aspects of fishing in general.

Thread Tools
Old 01-04-2010, 11:54 AM
archiver archiver is offline
Official Member
Join Date: Nov 2005
Posts: 103
Default Diet composition in San Francisco Estuary striped bass : does trophic adaptability have its limits?

Diet composition in San Francisco Estuary striped bass : does trophic adaptability have its limits?

NOBRIGA Matthew L. (1) ; FEYRER Frederick (2) ;
Author(s) Affiliation(s)

(1) CALFED Science Program, 650 Capitol Mall, 5th Floor, Sacramento, CA 95814, ETATS-UNIS
(2) California Department of Water Resources, 901 P Street, 4th Floor, Sacramento, CA 95814, ETATS-UNIS


Trophic adaptability is a term used to describe feeding flexibility in fishes. Though a useful conceptual starting point, fishes often face constraints on their ability to switch prey that could limit feeding success even when prey switching is observed. We compared striped bass diet compositions summarized from previously published studies in California's Sacramento-San Joaquin Delta during two time periods (1963-1964 and 2001-2003), which allowed us to evaluate trophic adaptability in San Francisco Estuary striped bass at multiple time scales, ranging from intra-annual to multidecadal. The Delta is the landward region of the San Francisco Estuary; over time between the study periods, the Delta underwent substantial changes in potential prey availability for striped bass. We found evidence for trophic adaptability in San Francisco Estuary (SFE) striped bass at all temporal scales examined. Despite this ability to adapt to changes in prey availability, the relative abundance and carrying capacity of young striped bass have declined. This decline has previously been associated with substantial declines in their dominant historical prey-mysid shrimp. Our results, coupled with these previous findings, indicate that trophic adaptability may have limited usefulness as a conceptual model to predict foraging success when other food web constraints are not considered. We speculate that this is particularly true in highly invaded ecosystems like the San Francisco Estuary because invading species often introduce substantial and permanent changes into food webs, decreasing the likelihood that a predator will find prey assemblages that fully replace historical prey assemblages.
Journal Title

Environmental biology of fishes ISSN 0378-1909 CODEN EBFID3

2008, vol. 83, no4, pp. 495-503 [9 page(s) (article)] (1 p.1/4)
Reply With Quote
Sponsored Links


adaptability, bass, composition, diet, estuary, francisco, limits, san, striped, trophic

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Some Info On Striped Bass Reel Force Hudson River 8 03-22-2012 08:10 AM
Effects of Striped Bass Stocking on Largemouth Bass and Spotted Bass in Lewis Smith Lake, Alabama archiver Sweetwater Fishing -Freshwater Stripers 0 01-04-2010 11:31 AM
Proposed slot limit - striped bass regulations for Delaware River and Estuary- 2009 Striperjim Delaware River 6 03-10-2009 09:51 AM
The Large breeders Striperjim Reference Library 10 08-29-2008 03:13 AM
Black Bass Myth Test And Answers CaptainMorgan! Sweetwater Fishing -Freshwater Stripers 0 02-16-2007 09:47 PM

All times are GMT -4. The time now is 05:28 PM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright 2004 - 2013 LLC
Affiliated Sites: