POSSIBLE COMPETITIVE-EXCLUSION OF COMMON RIVER GALAXIAS (GALAXIAS-VULGARIS) BY KOARO (G-BREVIPINNIS) FOLLOWING IMPOUNDMENT OF THE WAIPORI RIVER, OTAGO, NEW-ZEALAND

Authors
MCDOWALL RM ALLIBONE RM
Citation
Rm. Mcdowall et Rm. Allibone, POSSIBLE COMPETITIVE-EXCLUSION OF COMMON RIVER GALAXIAS (GALAXIAS-VULGARIS) BY KOARO (G-BREVIPINNIS) FOLLOWING IMPOUNDMENT OF THE WAIPORI RIVER, OTAGO, NEW-ZEALAND, Journal of the Royal Society of New Zealand, 24(2), 1994, pp. 161-168
Citations number
20
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Journal of the Royal Society of New Zealand → ACNP
ISSN journal
03036758
Volume
24
Issue
2
Year of publication
1994
Pages
161 - 168
Database
ISI
SICI code
0303-6758(1994)24:2<161:PCOCRG>2.0.ZU;2-I
Abstract
Common river galaxias (Galaxias vulgaris) are apparently absent from t he Waipori River above Lake Mahinerangi, but widespread elsewhere in t he Taieri River system including tributaries just below the dam. Koaro (G. brevipinnis) abound in tributaries of Lake Mahinerangi, but are r are in the Taieri River. We hypothesise that koaro have replaced commo n river galaxias in streams above the Mahinerangi Dam since it was bui lt.