Carpinteria Salt Marsh Reserve

11 Jan, 08 AM - 19 Jan, 07 AM

Griffen's isopod, Orthione griffenis, the first known introduced bopyid and one of the first introductions to open marine waters of the eastern Pacific, effectively castrates the native mud shrimp, Upogebia pugettensis and Upogebia macginitieorum within its new range, Punta Banda, Baja California to Bamfield, Vancouver Island, British Columbia. Collapses of U. pugettensis populations are associated with Orthione infestations and reproductive members of all northeast Pacific Upogebia populations examined are infested at 50-100% prevalence. The late appearance of this large, new species where the bopyrid taxonomy was previously well known and the discovery of conspecific Asian populations indicate that it is introduced. The uniform occurrence of bopyrid pelagic dispersal stages in Yaquina Bay, Oregon zooplankton samples and in ballast water samples from Coos Bay, Oregon indicate O. griffenis is likely to have been transported to North America from Asia in ballast water. The introduction, massive effects, uniform prevalences and widespread distribution of a specialist parasite with a complex life history to new hosts in a different oceanographic regime from its origins would not have been predicted by present interpretations of life history and propagule pressure theory. The O. griffenis introduction is unlikely to be an isolated case and extinctions of northeastern Pacific Upogebia species due to this new invader are possible. I would like to sample for Orthione in CSM

Visit #16935 @Carpinteria Salt Marsh Reserve

Approved

Under Project # 19327 | Research

The first known introduced bopyrid isopod crustacean and its other side of ?parasite release? among new native North American decapod hosts

faculty - Oregon State University

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Group of 2 Faculty Jan 11 - 19, 2009 (9 days)

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Day Use Only 2 Jan 11 - 19, 2009