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1 September 2003 Embryonic Development of the Pacific Lamprey, Entosphenus tridentatus
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Abstract

Embryonic development of the Pacific lamprey, Entosphenus tridentatus, from Japan is described. Egg sizes averaged 1.249 mm (longest axis) and 1.145 mm (shortest axis), the time required for hatching being 11 days at 18°C, shorter than previously reported for a lower water temperature (19 days at 15°C). Early development in E. tridentatus proceeded at a similar rate to that in other lampreys, in spite of different rearing water temperatures for the latter, indicating possible specific differences in basic developmental rates.

Yuji Yamazaki, Norio Fukutomi, Korenori Takeda, and Akihisa Iwata "Embryonic Development of the Pacific Lamprey, Entosphenus tridentatus," Zoological Science 20(9), 1095-1098, (1 September 2003). https://doi.org/10.2108/zsj.20.1095
Received: 11 April 2003; Accepted: 1 June 2003; Published: 1 September 2003
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