アミ類の寄生生物に関する最近の研究 <特集 プランクトンにおける寄生・共生 : その多様性と重要性>

日本プランクトン学会報 Volume 53 Issue 1 Page 37-44 published_at 2006-02-25
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Title ( jpn )
アミ類の寄生生物に関する最近の研究 <特集 プランクトンにおける寄生・共生 : その多様性と重要性>
Title ( eng )
Recent advances in studies of parasites on mysid crustaceans
Creator
Hanamura Yukio
Harada Shinsuke
Shimomura Michitaka
Source Title
日本プランクトン学会報
Volume 53
Issue 1
Start Page 37
End Page 44
Abstract
Mysid crustaceans are subject to infestation by a variety of organisms, but little attention has been paid to the biological interaction between the hosts and their parasites. Recent studies have revealed higher diversity of parasitism in mysids than was thought previously. The present paper briefly reviews recent studies on interactions between mysids and their parasites.

Ciliates are common epibionts on mysids. Some peritrich ciliates have close relationships with intertidal species of Archaeomysis in the northwestern Pacific. The host-specificity, attachment site preference, and geographical cline of the ciliates are remarkable along the coasts of Japan. In Ishikari Bay, northern Japan, the prevalence of the ciliates is maintained at high levels throughout the year, indicating that the ciliates are capable of re-attaching on the fresh exoskeleton of mysids immediately after the molt of the hosts takes place. Eggs/embryos within the female marsupium are free from these epibionts.

Infection of some ellobiopsids adversely impacts on host crustaceans including mysids by inducing a reduction in development and reproduction, castration, and/or intersex. Some crustacean parasites found within the host marsupium such as nicothoid copepods and epicaridean isopods greatly influence host population dynamics, because of their relatively high incidence and devouring of host eggs/embryos. In the Seto Inland Sea, western Japan, these two parasites occur on Siriella okadai and seem to compete severely over the habitat (marsupium) and foods (eggs/embryos) of the host mysid.
Keywords
mysid
parasite
host
ciliates
Ellobiopsidae
Nicothoidae
Epicaridea
NDC
Zoology [ 480 ]
Language
jpn
Resource Type journal article
Publisher
日本プランクトン学会
Date of Issued 2006-02-25
Rights
Copyright (c) 2006 The Plankton Society of Japan
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0387-8961
[NCID] AN00197015