Early life history and biology of the common fish parasite,Lironeca ovalis (Say) (Isopoda,Cymothoidae) |
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| Authors: | Paul A Sandifer J Howard Kerby |
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| Institution: | 1. Marine Resources Research Institute, Post Office Box 12559, 29412, Charleston, South Carolina
2. North Carolina Cooperative Fishery Research Unit, North Carolina State University, Box 5577 State College Station, 27650, Raleigh, North Carolina
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| Abstract: | The first post-marsupial stage of the common fish parasite, Lironeca ovalis, is described and found to be identical to Aegathoa medialis Richardson. It is suggested that A. oculata (Say) may also be a young stage of L. ovalis. The juvenile isopods were observed to attach readily to potential host fish, juvenile striped bass and white perch, in the laboratory. However, the parasites could be dislodged easily, and there was no indication that they were actually feeding on the host fish. The isopods also did not feed on newly hatched Artemia nauplii or unicellular algae (Monochrysis lutheri and Phaeodactylum tricornutum) in culture trials. It appears that the young isopods can survive free-swimming for only 1–2 weeks without a host, but the animals may be able to maintain a more-or-less free existence for an extended period by moving from host to host via plankton. |
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