Possible new Neoplecostomus

Post by **Silurus** » 23 Sep 2004, 08:59

Zawadzki, CH, AL Alves, E Renesto & C Oliveira, 2004. Biochemical evidence of possible new species of Neoplecostomus (Teleostei: Loricariidae) from the upper Rio ParanÃ¡ basin, Brazil. Biochemical Systematics and Ecology, 32: 573-582.

Abstract

Neoplecostomus paranensis Langeani, 1990, from the upper Rio ParanÃ¡, is the only Neoplecostomus species described in this basin and is distinguished from its congeners by the lack or reduction of the adipose fin. Neoplecostomus specimens with a normal and always present adipose fin were caught in the Rio CorumbÃ¡, upper Rio ParanÃ¡ basin. In the present study two samples of populations, one from a tributary of Rio Paranapanema (identified as a typical N. paranensis) and the other from the Rio CorumbÃ¡ were compared through allozyme electrophoresis. Six diagnostic loci were found, Acp-A, Adh-A, Est-A, Gpi-A, Ldh-A and Ldh-B. In addition, the locus Gpi-B showed significant differences between allelic frequencies for the two samples. Neiâ??s genetic identity between the populations was 0.731. The expressive genetic divergence together with the presence of an adipose fin show that the sample from the Rio CorumbÃ¡ is distinct from N. paranensis and probably represents a new species.

worton[pl] · Post by **worton[pl]** » 23 Sep 2004, 15:53

a bit oot but Zawadzki sounds like a polish surname. I'm proud. :]

kwalker · Post by **kwalker** » 24 Sep 2004, 05:23

does this fish currently have an L-number?

ken

Post by **Silurus** » 24 Sep 2004, 05:29

I don't think any Neoplecostomus has an L-number.

Yann · Post by **Yann** » 24 Sep 2004, 11:56

Hi!

HH: no I don't think it has a L-number but one or two has an LDA-number, can't remember exactly which one...

Cheers
Yann