Thermal effects on embryonic development and hatching for blue king crab Paralithodes platypus (Brandt, 1850) held in the laboratory, and a method for predicting dates of hatching.(Abstract)

Journal of Shellfish Research | December 1, 2008| | Copyright

ABSTRACT Climate change may affect crab populations via thermal effects on embryo development and hatching. To test this, we measured the duration of development and hatching for the embryos of 11 blue king crabs Paralithodes platypus held at 2.3 [+ or -] 0.45, 4.3 [+ or -] 0.31, and 6.1 [+ or -] 0.61[degrees]C. Embryo area, length, and width, eye length and width, and percent yolk were measured biweekly from digital images, and hatching larvae were collected daily from individual crabs. Data were compared between eggs of identical age (weeks since fertilization). Temperature ...

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