The effects of green sunfish on the distribution, abundance and habitat use of gila chub in Sabino Creek, Arizona

Persistent Link:
http://hdl.handle.net/10150/278500
Title:
The effects of green sunfish on the distribution, abundance and habitat use of gila chub in Sabino Creek, Arizona
Author:
Dudley, Robert Kenneth, 1970-
Issue Date:
1995
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Gila chub (Gila intermedia) were at lower densities in areas of Sabino Creek with green sunfish (Lepomis cyanellus) than areas without sunfish. No young-of-year (YOY) chub were observed in pools where densities of sunfish were reduced by about 90% or in control pools, but YOY chub were abundant in upstream areas without sunfish. The microhabitat selected by YOY chub was nearly identical to that selected by sunfish (7.5 cm, TL). In predation experiments, sunfish (7.5 cm, TL) consumed YOY chub (2.5 cm, TL). The absence of YOY chub in areas with sunfish may, in part, be due to predation by small sunfish. In winter, chub use of microhabitat did not differ in areas with and without sunfish. In summer, chub used faster currents, areas farther from cover and shallower depths in areas with than without sunfish. In summer, niche shifts by chub may be a response to avoid negative interactions with sunfish.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Biology, Ecology.; Biology, Zoology.; Agriculture, Forestry and Wildlife.; Agriculture, Fisheries and Aquaculture.; Biology, Limnology.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Renewable Natural Resources
Degree Grantor:
University of Arizona
Advisor:
Matter, William J.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleThe effects of green sunfish on the distribution, abundance and habitat use of gila chub in Sabino Creek, Arizonaen_US
dc.creatorDudley, Robert Kenneth, 1970-en_US
dc.contributor.authorDudley, Robert Kenneth, 1970-en_US
dc.date.issued1995en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractGila chub (Gila intermedia) were at lower densities in areas of Sabino Creek with green sunfish (Lepomis cyanellus) than areas without sunfish. No young-of-year (YOY) chub were observed in pools where densities of sunfish were reduced by about 90% or in control pools, but YOY chub were abundant in upstream areas without sunfish. The microhabitat selected by YOY chub was nearly identical to that selected by sunfish (7.5 cm, TL). In predation experiments, sunfish (7.5 cm, TL) consumed YOY chub (2.5 cm, TL). The absence of YOY chub in areas with sunfish may, in part, be due to predation by small sunfish. In winter, chub use of microhabitat did not differ in areas with and without sunfish. In summer, chub used faster currents, areas farther from cover and shallower depths in areas with than without sunfish. In summer, niche shifts by chub may be a response to avoid negative interactions with sunfish.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectBiology, Ecology.en_US
dc.subjectBiology, Zoology.en_US
dc.subjectAgriculture, Forestry and Wildlife.en_US
dc.subjectAgriculture, Fisheries and Aquaculture.en_US
dc.subjectBiology, Limnology.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineRenewable Natural Resourcesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorMatter, William J.en_US
dc.identifier.proquest1376002en_US
dc.identifier.bibrecord.b33867288en_US
dc.identifier.bibrecord.b33521050en_US
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