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Free Content Larval Development of Euphausia Sanzoi Torelli (Crustacea: Euphausiacea)

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The larval development of E. sanzoi, a member of the “E. gibboides group” of species which includes E. gibboides Ortman, E. sanzoi Torelli, and E. fallax Hansen, is described and illustrated including calyptopis stages I-III and furcilia I-VI. Identification of the larvae, studied from preserved plankton samples, is based on morphological and distributional characters; they are compared with the larvae of E. gibboides which were identified by hatching and were described in an earlier report. The species are very similar in growth and development, but consistent differences are noted between them. Seasonal variation of mean growth, observed in larvae from the South China Sea population of E. sanzoi, is figured; differences in size do not relate directly to fluctuations in temperatures of surface waters. Two records of the capture of larvae of E. gibboides within the distributional range of E. sanzoi are reported.

Document Type: Research Article

Publication date: October 1, 1976

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