TEMPORAL VARIATION OF PERKINSUS OLSENI INFECTION INTENSITY IN THE MANILA CLAM RUDITAPES PHILIPPINARUM IN GOMSO BAY, OFF THE WEST COAST OF KOREA SCIE SCOPUS

Cited 10 time in WEB OF SCIENCE Cited 12 time in Scopus
Title
TEMPORAL VARIATION OF PERKINSUS OLSENI INFECTION INTENSITY IN THE MANILA CLAM RUDITAPES PHILIPPINARUM IN GOMSO BAY, OFF THE WEST COAST OF KOREA
Author(s)
Yang, Hyun-Sung; Park, Kyung-Il; Donaghy, Ludovic; Adhya, Mausumi; Choi, Kwang-Sik
KIOST Author(s)
Yang, Hyun Sung(양현성)
Publication Year
2012-08
Abstract
Interannual variation of Perkinsus olseni infection intensity in the adult Manila clam Ruditapes philippinarum in Gomso Bay, off the west coast of Korea, was monitored from 1999 to 2000. Infection intensity of P. olseni (i.e., total number of P. olseni cells in unit tissue weight) was determined using Ray's fluid thioglycollate medium assay and Choi's 2-M NaOH digestion. In Gomso Bay, P. olseni monthly infection prevalence ranged from 83 (April 2000)-100%. It was remarkable that of the 18 mo of sampling, the prevalence remained at 100% in 12 sampling months. Infection intensity of P. olseni in Manila clam ranged 366,001 (July 1999)-2,235,325 cells/g wet tissue (October 1999). The infection intensity recorded in 1999 was significantly higher than the level measured in 2000, suggesting an interannual variation in the intensity (P < 0.05). A very high level of infection intensity observed during the fall (September, October, and November) coincided with a relatively low condition index and mass morality of clams in the bay. Our data suggest that the mass mortality of clams observed during late summer to mid fall in Gomso Bay could be, in part, explained by the high level of Perkinsus infection coupled with the poor physiological condition of clams during the postspawning season.
ISSN
0730-8000
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3488
DOI
10.2983/035.031.0312
Bibliographic Citation
JOURNAL OF SHELLFISH RESEARCH, v.31, no.3, pp.685 - 690, 2012
Publisher
NATL SHELLFISHERIES ASSOC
Subject
OYSTER CRASSOSTREA-GIGAS; LINKED-IMMUNOSORBENT-ASSAY; DEFENSE-RELATED ACTIVITIES; EASTERN OYSTERS; HEMOCYTE PARAMETERS; PACIFIC OYSTERS; REPRODUCTIVE EFFORT; MARINUS INFECTION; SUMMER MORTALITY; SEASONAL-CHANGES
Keywords
Manila clam; Perkinsus olseni; Ruditapes philippinarum; seasonality; infection intensity and prevalence; RFTM
Type
Article
Language
English
Document Type
Article
Publisher
NATL SHELLFISHERIES ASSOC
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