日本铗蛤虎鱼 Neoheterobothrium hirame（单殖吸虫纲）在日本常磐地区的感染水平快速波动。

Rapid fluctuation in infection levels of Neoheterobothrium hirame (Monogenea) in Japanese flounder Paralichthys olivaceus in the Joban area, Japan.

机构信息

Fukushima Prefectural Fisheries Experimental Station, Iwaki, Fukushima 970-0316, Japan.

出版信息

J Fish Biol. 2009 Jul;75(1):172-85. doi: 10.1111/j.1095-8649.2009.02278.x.

DOI:10.1111/j.1095-8649.2009.02278.x

PMID:20738490

Abstract

Neoheterobothrium hirame a haematophagous monogenean parasite on Japanese flounder Paralichthys olivaceus occurred at high prevalences (> 70%) from 1999 to 2002 but thereafter declined and remained low (< 20%) from 2003 to 2005 in the Joban area, Japan. In 2006, N. hirame became abundant again reaching a prevalence of 63%. Generalized linear models explained these rapid fluctuations in infection in relation to inshore water temperature, which affected the reproductive success of the parasite, and also the encounter rate between host and parasite through changes in their respective population densities. Severely anaemic fish were few, 2.4% even in 1999-2002 and 2006, suggesting that the effect of N. hirame infection on the P. olivaceus population was small in this area.

摘要

日本牙鲆（Paralichthys olivaceus）上的血吸性单殖吸虫新异盘虫（Neoheterobothrium hirame），1999 年至 2002 年的流行率很高（>70%），但此后在日本常磐地区的流行率从 2003 年至 2005 年下降并保持在较低水平（<20%）。2006 年，新异盘虫再次大量出现，流行率达到 63%。广义线性模型解释了这些与近岸水温有关的感染的快速波动，近岸水温影响了寄生虫的繁殖成功率，还通过改变宿主和寄生虫的种群密度来影响它们之间的相遇率。严重贫血的鱼类很少，即使在 1999-2002 年和 2006 年，也只有 2.4%，这表明新异盘虫感染对该地区日本牙鲆种群的影响很小。