原著
2010年～2013年における兵庫県北部円山川中州・菊屋島におけるクロベンケイガニの大平肺吸虫メタセルカリア寄生率について
2013 年 65 巻 3 号 p. 157-162
詳細
2013 年 65 巻 3 号 p. 157-162
A survey of Paragonimus ohirai metacercariae in the brackish water crab Sesarma dehaani was conducted from 2010 to 2013 on the Kikuyajima Sandbank near the mouth of the Maruyama River in northern Hyogo Prefecture. The infection rates from 2010 to 2013 were 88.3%, 81.6%, 84.4% and 87.5%, respectively. The numbers of metacercariae per crab were 14.8, 10.9, 6.7 and 10.9 from 2010 to 2013, respectively. The maximum number of metacercariae found in a single crab was 163 in 2010, 97 in 2011, 41 in 2012 and 84 in 2013. On the opposite shore of the Kikuyajima Sandbank, the infection rate of S. dehaani with P. ohirai metacercariae was 35.3% in 2011.
Adding the data from 2001 to 2009, the change of the infection rate and the numbers of metacercariae per crab were considered. Despite the high infection rates observed on the Kikuyajima Sandbank, the number of P. ohirai metacercariae in S. dehaani was recently observed to decrease through 13 years.
