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Full-Text Articles in Marine Biology
Genetic Analysis Of The Federally Endangered Winged Mapleleaf Mussel To Aid Proposed Re-Introduction Efforts, Kevin J. Roe
Genetic Analysis Of The Federally Endangered Winged Mapleleaf Mussel To Aid Proposed Re-Introduction Efforts, Kevin J. Roe
Kevin J. Roe
The winged mapleleaf, Quadrula fragosa, historically occurred in the Mississippi, Tennessee, Ohio, and Cumberland river drainages, but has suffered severe population and range reductions. At the time that the species was federally listed as endangered, its range was thought to have been reduced to a stretch of the St. Croix River between northwestern Wisconsin and east-central Minnesota. Recently, morphologically “Q. fragosa-like” specimens were discovered at sites in Arkansas (Ouachita River and Saline River), Missouri (Bourbeuse River), and Oklahoma (Little River). Subsequently, a plan was proposed to re-introduce Q. fragosa into portions of its historic range where its been extirpated from …
Molecular Systematics Of The Freshwater Mussel Genus Potamilu (Bivalvia: Unionidae), Kevin J. Roe, Charles Lydeard
Molecular Systematics Of The Freshwater Mussel Genus Potamilu (Bivalvia: Unionidae), Kevin J. Roe, Charles Lydeard
Kevin J. Roe
Few explicit hypotheses for the relationships of unionid mussels exist. The absence of explicit phylogenetic hypotheses is problematic and is in part responsible for the lack of taxonomic stability seen in this group. In this paper we examine the relationships of mussels in the genus Potamilus, based upon the DNA sequences of a 600 base pair portion of the first subunit of the mitochondrial cytochrome c oxidase (COI) gene. We also examine the genetic distinctiveness of populations of the inflated heelsplitter P. inflatus. The molecular phylogeny indicates that Potamilus is paraphyletic with Leptodea fragilis and Lampsilis ornata nested between P. …