Host Fish Species for Glochidia of Anemina arcaeformis Revealed by Artificial Infection Experiment

Abstract

In this study, host suitability for glochidia of the bivalve Anemina arcaeformis was tested in fish of 12 taxa in 4 families (Lethenteron sp. in Petromyzontidae; Carassius sp., Rhodeus ocellatus ocellatus, Opsariichthys platypus, Candidia sieboldii, Pseudorasbora parva, Gnathopogon elongatus elongatus, Biwia zezera, and Pseudogobio esocinus esocinus in Cyprinidae; Misgurnus anguillicaudatus and Cobitis spp. (C. biwae and C. minamorii tokaiensis) in Cobitidae, and Rhinogobius flumineus in Gobiidae) by an artificial infection experiment. Metamorphosed juveniles were obtained from 9 taxa. Juveniles could not be obtained from R. o. ocellatus, Carassius sp., and M. anguillicaudatus. The highest metamorphosis rates from parasitized larvae to juveniles was 30.3% in C. sieboldii, 23.5% in R. flumineus, 16.8% in Cobitis spp., 13.6% in P. parva, 11.9% in O. platypus, 4.4% in Lethenteron sp., 2.8% in B. zezera, 2.1% in G. e. elongatus and 0.7% in P. e. esocinus. Only Rhinogobius spp. were previously known to be hosts of A. arcaeformis, so these represent new host fish.