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mtDNA inheritance in Echinoderms

Fri Jul 18 10:37:24 EST 1997

Jim Cummins asked: Is mtDNA inheritance in echinoderms maternal, paternal, or


    I don't think that anyone has critically examined that question for
echinoderms in particular.  In our studies on seastars, we have assumed that
the mtDNA is inherited strictly maternally (as it generally appears to be in
most animals), and we have not seen any evidence to the contrary in our data.

    However, there is a growing literature of paternal inheritance in some
groups.  For instance, check out the following reference:

"Male-dependent Doubly Uniparental Inheritance of Mitochondrial DNA and Female-
dependent Sex-ratio in the Mussel Mytilus galloprovicialis" by Carlos
Saavedra, Maria-Isabel Reyero, and Eleftherios Zouros in GENETICS 145:1073-1082
(April, 1997).

Good luck on getting a more precise answer.

Scott Herke

sherke at lsuvm.sncc.lsu.edu

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