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Title: Two Genetically Distinct Populations of Bobtail Squid, Euprymna scolopes, Exist on the Island of O'ahu 
Author: Kimbell, J.R.; McFall-Ngai, M.J.; Roderick, G.K.
Date: 2002-07
Publisher: University of Hawai'i Press
Citation: Kimbell JR, McFall-Ngai MJ, Roderick GK. 2002. Two genetically distinct populations of bobtail squid, Euprymna scolopes, exist on the island of O'ahu. Pac Sci 56(3): 347-355.
Abstract: Population structure of the endemic Hawaiian bobtail squid, Euprymna
scolopes, was examined using both morphological and genetic data. Although
allozyme polymorphism was negligible, measurements of eggs, juveniles,
and adults, as well as genetic data sequences of mitochondrial cytochrome oxidase
I, demonstrated highly significant population structuring between two
populations found on the northeastern and southern coasts of the island of
O'ahu. These data suggest that extremely low levels of gene flow occur among
these populations. Population subdivision of marine shallow-water invertebrates
in Hawai'i is not expected based on earlier surveys, but may reflect a more
general pattern for organisms, both marine and terrestrial, that exhibit limited
dispersal. The subdivision also provides insight into the pathway through which
coevolution between E. scolopes and its internal symbiont, Vibrio fischeri, may
ISSN: 0030-8870

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