Etiology Study of Nursery Abalone Die-Off in Taiwan
Date Issued
2005
Date
2005
Author(s)
Yang, Mi-Ching
DOI
zh-TW
Abstract
The species of abalone cultured in Taiwan is belong to genus Haliotis,
family Haliotidae, and locally known as “nine hole” and “pearl abalone”. It’s
not only used to be traditional herb, but also be one of the important exported
goods in Taiwan’s aquiculture industry. The die-off of nursery abalone was
first occurred in Yielan in 2001 and the farmers suffering severe econimic loss.
The situation of nursery abalone die-off has spreaded out to Kaohsiung,
Taitung and Penhu. High mortality of adult abalone occurred in north eastern
Taiwan in January 2003. The abalone fishery in Dongshan and Zhangpu in
Fujian province also had similar mortality of adult abalone during 1999 winter
to 2000 spring. This situation quickly spread out along the Mainland China
coast from Shangdong province to Hainan Island. In the study, Rickettisa-like
organism has been found in adult abalone using hitopathology exam and
transmissible electronmicroscopy. The Rickettisales-like organism, which
cause withering syndrome is found in black abalone (Haliotis cracherodii) and
red abalone (H. rufescens). There mortality of balck abalone maybe related to
rickettisales-like organism intensity, temperature, and food supply. Results in
the study are unable to clarify the relationship between rickettsiales-like
organism and nursery abalone die-off.
Subjects
九孔
幼苗
大量死亡
Rickettisa-like organism
small abalone (Haliotis diversicolor supertexta)
die-off
SDGs
Type
thesis
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