Range expansion of the genus Sicydium (Teleostei: Gobiidae) to coastal mountain streams of southwestern Ecuador and possibly northwestern Peru

We report collections of several specimens of Sicydium in 2013 and 2014 from the Jubones and Santa Rosa Rivers in southwestern Ecuador. These collections substantially expand the known range of the genus southward. The specimens are tentatively identified as Sicydium cf. rosenbergii based on their morphology. Small differences in morphology among specimens from the two rivers are noted, as are discrepancies with the type description. A museum database search uncovered two additional records of the genus south of their previously recognized range including one record from northwestern Peru

Parallel Body Shape Divergence in the Neotropical Fish Genus Rhoadsia (Teleostei: Characidae) Along Elevational Gradients of the Western Slopes of the Ecuadorian Andes

Morphological data collected from specimens of Rhoadsia spp. (Teleostei: Characidae) in western Ecuador. Excel file with individual standard length (SL), body depth (BD), size-adjusted fineness ratio (Adj_FR), and size-adjusted canonical variates analysis scores on axes 1 and 2 (Adj_CV1, Adj_CV2)

<i>Rhoadsia</i> spp. from western Ecuador.

<p>A) Representative specimen of <i>R</i>. <i>altipinna</i> from the Guayas River drainage (Río Palenque, FMNH-79080). B) Holotype of <i>R</i>. <i>minor</i> from Mindo in the upper Esmeraldas drainage (CAS-62221).</p

Genetic diversity of COI and S7i2 genes.

<p>N is the number of specimen sequenced per sample and per gene, H is the number of COI haplotypes, H_d is haplotype diversity, H_p is the number (and percentage) of private haplotypes, A is the number of alleles, A_e is the effective number of alleles, and A_p is the number (and percentage) of private alleles.</p

Genetic networks constructed using parsimony analysis in Network 5.0.0.0.

<p>Sizes of the circles are proportional to the number of specimens included. A) Network for COI haplotypes. B) Network for S7 intron alleles.</p