HEMIGALEIDAE (WEASEL SHARKS)

Henderson, Aaron C., Reeve, Alan J., Jabado, Rima W. & Naylor, Gavin J. P., 2016, Taxonomic assessment of sharks, rays and guitarfishes (Chondrichthyes: Elasmobranchii) from south-eastern Arabia, using the NADH dehydrogenase subunit 2 (NADH 2) gene, Zoological Journal of the Linnean Society 176 (2), pp. 399-442 : 430

HEMIGALEIDAE (WEASEL SHARKS)

Three hemigaleid species were assessed and they exhibited a between-group mean distance of 7.50 ± 0.56%. Each species formed a distinct cluster ( Fig. 2 ), with Hemipristis elongata displaying a mean distance of 17.09 ± 1.34 and 16.24 ± 1.43% with Paragaleus randalli and Chaenogaleus macrostoma , respectively. The latter two species displayed a mean distance of 10.29 ± 1.16%. Only H. elongata and P. randalli were included in the Naylor et al. (2012) study, and each formed a single cluster. The addition of the current specimens did not result in any subdivisions within these species.

Figures

Figure 2. Neighbour-joining tree for an 829-bp fragment of the NADH2 gene from 1487 elasmobranch specimens from south-eastern Arabia. Values in parentheses indicate sample size (n) and within-group mean genetic distance (D). Bootstrap values are based on 1000 replications and only values ≥ 95% are shown.