Genetic structure among populations of Potamonautes perlatus (Decapoda: Potamonautidae) from the Olifants River system in the Western Cape, South Africa

1999 ◽  
Vol 249 (2) ◽  
pp. 137-142 ◽  
Author(s):  
Savel R. Daniels ◽  
Barbara A. Stewart ◽  
Mark J. Gibbons
Keyword(s):  
South Africa ◽  
Genetic Structure ◽  
River System ◽  
Western Cape ◽  
Olifants River

Biochemical and Morphological Evidence for a New Species of River Crab Potamonautes Parvispina Sp. Nov. (Brachyura, Potamonautidae)

Crustaceana ◽  
1997 ◽  
Vol 70 (6) ◽  
pp. 737-753 ◽  
Author(s):  
Barbara A. Stewart
Keyword(s):  
South Africa ◽  
New Species ◽  
Genetic Differentiation ◽  
Morphological Evidence ◽  
Western Cape ◽  
Sympatric Populations ◽  
Olifants River ◽  
Allozyme Loci ◽  
A New Species

AbstractPotamonautid river crabs were collected from four sites along the Olifants River in the Western Cape, South Africa in order to determine morphological and genetic differentiation among these populations. Two distinct forms were identified, and fixed allele differences at some allozyme loci between sympatric populations of the two forms confirmed that they were reproductively isolated. It was concluded that these forms represent two species, one of which was previously unknown, and is described in this paper as Potamonautes parvispina sp. nov.

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