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StephenH · 05/19/2006, 04:10 AM

Luis and Andy,

I realize that they are in the same genus, but the differences in ontogeny makes me wonder whether they should be. For other shrimp genera which are commonly cultured (e.g. Penaeus, Litopenaeus, Palaemonetes, Macrobrachium) you are hard pressed to find vague differences in larval morphology and development among numerous species within a genus. Since larval development is such a primal characteristic, and since members of a genus are supposed to have common ancestors, it just does not make sense that wurdemanii and ambionensis would both be Lysmata. Has anyone ever done any DNA work on these species?

-steve hopkins

Oh, and I fixed the PM thing, Luis.

05/19/2006, 04:10 AM	#11
StephenH Registered Member Join Date: Feb 2001 Location: Hakipu'u, Hawaii Posts: 76	Luis and Andy, I realize that they are in the same genus, but the differences in ontogeny makes me wonder whether they should be. For other shrimp genera which are commonly cultured (e.g. Penaeus, Litopenaeus, Palaemonetes, Macrobrachium) you are hard pressed to find vague differences in larval morphology and development among numerous species within a genus. Since larval development is such a primal characteristic, and since members of a genus are supposed to have common ancestors, it just does not make sense that wurdemanii and ambionensis would both be Lysmata. Has anyone ever done any DNA work on these species? -steve hopkins Oh, and I fixed the PM thing, Luis.