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The Loach Forum Archives (6)
Posted By: Tom W <email@example.com>
Date: Wednesday, 2 March 2005, at 2:17 a.m.
I wanted to post a summary for those of you who do not have access to the recently mentioned Pangio genetics paper. The two species are separated morphologically and of course by genetics (which is the focus of the paper). The morphological features that separate P. filinaris from P. piperata are:
*piperata lacks nasal barbel, more slender
body, and coloration
*filinaris has nasal barbel and different coloration pattern.
The study looked for genetic differences to support the morphological differences. The technique used was RAPD (random amplified polymorphic DNA). I'm skipping the details but the authors found genetic evidence separating the two species supporting the morphological data and thus the two species appear to be distinct. Cheers- Tom