A Pelagic Cyprinid of Lake Biwa Gnathopogon caerulescens and a Brooklet-Dwelling Relative G. elongatus formed a Hybrid Swarm in a Dammed Reservoir Lake Ono
Journal of National Fisheries University Volume 60 Issue 1
Page 43-50
published_at 2011-10
Title
A Pelagic Cyprinid of Lake Biwa Gnathopogon caerulescens and a Brooklet-Dwelling Relative G. elongatus formed a Hybrid Swarm in a Dammed Reservoir Lake Ono
Creators
Nakashima Norihisa
Creators
Uno Takashi
Creators
Kitagawa Shinsuke
Creators
Kuwahara Masayuki
Source Identifiers
[PISSN] 0370-9361
Creator Keywords
Cyprinidae
Lake Biwa
transplantation
hybrid swarm
morphology
allozyme
mitochondrial DNA
planktivorous pelagic cyprinid of Lake Biwa Gnatopogon caeruleslens was transplanted to a dammed reservoir Lake Ono in Yamaguchi Prefecture in 1953, but nowadays fish seemingly intermediate between G. caerulescens and a brooklet-dwelling relative G. elongatus has propagated. Morphological and genetic comparisons clearly revealed the Lake Ono fish intermediacy between G. caerulescens and G. elongatus and strongly suggested that the Lake Ono opulation is a hybrid swarm between them. In order to transplant G. caerulescens to other waters from Lake Biwa hereafter, it should be introduced to sufficiently large and deep lakes capable of assuring its pelagic and planktivorous lifestyle, and contamination of G. elongatus should be eliminated at the same time.
Languages
eng
Resource Type
departmental bulletin paper
Publishers
National Fisheries University
Date Issued
2011-10
File Version
Version of Record
Access Rights
open access
Relations
[ISSN]0370-9361