Title

Akawaio Penak, A New Genus And Species Of Neotropical Electric Fish (Gymnotiformes, Hypopomidae) Endemic To The Upper Mazaruni River In The Guiana Shield

Abstract

Akawaio penak, a new genus and species, is described from the upper Mazaruni River, Guyana. The new species is diagnosed from all other species of Hypopomidae by several anatomical traits. The phylogenetic affinities of the new genus were inferred using data from one nuclear (rag2) and two mitochondrial (COI and cyt b) genes. The phylogenetic analyses indicate that Akawaio is the sister taxon of a clade that includes Brachyhypopomus, Hypopomus, Microsternarchus and Racenisia. These results provide evidence for the phylogenetic composition of Hypopomidae supported by previous molecular studies and support the position of the Steatogenini (Hypopygus + Steatogenys) as the sister group of Rhamphichthys + Gymnorhamphichthys. The description of this new electric knifefish increases the total number of endemic genera and species in the upper Mazaruni, a region that is suffering freshwater habitat degradation as consequence of gold-mining activities. © 2013 The Norwegian Academy of Science and Letters.

Publication Date

1-1-2014

Publication Title

Zoologica Scripta

Volume

43

Issue

1

Number of Pages

24-33

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1111/zsc.12035

Socpus ID

84889594568 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84889594568

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