Habitat Use of Two Benthic Fishes, Crossostoma lacustre and Rhinogobius candidianus, in the Hapen Creek of Northern Taiwan
Resource
Taiwania,49(三)
Journal
Taiwania
Journal Volume
49
Journal Issue
三
Pages
-
Date Issued
2004
Date
2004
Author(s)
Lin, Yao-Sung
Chuang, Ling-Chuan
Liang, Shih-Hsiung
DOI
246246/2006121215550987
Abstract
Habitat use was investigated for two common endemic and benthic fishes, Crossostoma
lacustre and Rhinogobius candidianus, in the Hapen Creek of northern Taiwan from August 1996 to
December 1998. C. lacustre and R. candidianus overlapped in mesohabitat use; both fish species
preferred riffles to pools. Further analyses based on stepwise multiple regression showed that fish
density was significantly correlated with water depth, small boulder, and finer substrate for C. lacustre,
but correlated with water depth, stream width, large boulder, and cobble for R. candidianus. The
separation in the microhabitat use might have alleviated the pressure for interspecific competitions
despite of their overlapping in the mesohabitat scale. Parallelly, the result suggests that the diverse
substratum composition may have accounted for the co-exsitence of these two benthic fishes. It would
also provide valuable information for habitat management and ecological engineering of mountain
creeks in Taiwan.
Subjects
Crossostoma lacustre
Rhinogobius candidianus
Riffle
Pool
Taiwan
Publisher
臺北市：國立台灣大學生態學與演化生物學研究所
Type
other
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