Descriptions of the Two Megalopal Stages of Laboratory-Reared Pink Shrimp, Pandalias Jordani

Identification Information

Citation

Originator: Hosie, Michael J.

Publish Date: 1974

Online Link: None

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Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Cedric Cooney

Job Position: Natural Resources Data and Systems Manager

Telephone: 503-947-6094

E-Mail Address: cedric.x.cooney@odfw.oregon.gov

Description

Abstract: This report describes for the first time, megalopal stages of the commercially important pink shrimp, Pandalus jordani, with a comparison with previously published larval studies. This will benefit future workers rearing this species' larvae and also in identification of its megalopae from plankton samples. Published studies of P. jordani larvae have been primarily restricted to descriptions of laboratory-reared zoeal stages. Modin and Cox (1967) cultured this species through 11 to 13 zoeal stages, with only one shrimp surviving to the first postlarval (megalopal) stage. This megalopal stage was not described. Lee (1969) also reared P. jordani larvae but none survived past the eighth zoeal stage. Peter Rothlisberg (Oregon State University, Department of Zoology, Pers. Comm.) reared P. jordani through 16, not yet identified, larval stages with a few individuals surviving to become juvenile shrimp. Hosie (1975) reared P. jordani through 10 to 12 zoeal stages and 2 megalopal stages, which are discussed in this paper.

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