Abstract
ATKINS1 has described the post-embryonic development of two British species of Pinnotheres. In P. pisum there are four zooeal stages and one megalopa, and in P. pinnotheres there are two zooeæ and a megalopa. In P. pisum the megalopa stage was reached six weeks after spawning and in P. pinnotheres it was reached after an interval of 21–26 days. Atkins quotes Sandoz and Hopkins2 and Hart3 to the effect that P. ostreum takes 21 days from hatching to megalopa and P. taylori 28 days from hatching to young crab.
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References
Atkins, D., Proc. Zoo. Soc. Lond., 124 (4), 687 (1955).
Sandoz, M., and Hopkins, S. H., Biol. Bull., Woods Hole, 93, 250 (1947).
Hart, J. F. L., Canad. J. Res., 12, 411 (1935).
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GOODBODY, I. Abbreviated Development in a Pinnotherid Crab. Nature 185, 704–705 (1960). https://doi.org/10.1038/185704a0
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DOI: https://doi.org/10.1038/185704a0
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