Actinosporean infections in oligochaetes in a river system in southwest Ireland with descriptions of three new forms

Diseases of Aquatic Organisms

M. F. Mulcahy¹  C. Negredo¹ 

关键词: Actinosporean;    Myxosporean;    Oligochaete;   

DOI  :  10.3354/dao046067

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Sediment samples were collected in April, June and August 1998 from a river in southwest Ireland. A total of 1836 oligochaete specimens were collected from these sediments, and examined for actinosporean infections. Actinosporean-infectedoligochaetes have been determined, symptoms and course of infection have been considered and the spores released from them have been described. Spore characteristics for each actinosporean were defined and the prevalence of infection in each oligochaetespecies was also determined. The overall prevalence of infection with actinosporeans within the oligochaete sample was ~2%. Seven types were distinguished, belonging to echinactinomyxon, aurantiactinomyxon and neoactinomyxum forms, from Tubifexignotus, Lumbriculus variegatus and Limnodrilus hoffmeisteri, and compared with actinosporean types previously reported in the literature. Three of these forms have not been previously described, while the other 4 are morphologically andmorphometrically similar to known forms. These actinosporeans may be stages in myxozoan life cycles.

【 授权许可】

Unknown