When destruction comes first: Two new species of Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) from a deeply-impacted river in the Rio São Francisco basin in Brazil.

Journal of Fish Biology
Iago de Souza PenidoC H Zawadzki

Abstract

Environmental disasters affecting Brazilian rivers have been frequent recently, especially involving mining activities. Two recent dam-rupture events suddenly released millions of cubic meters of iron tailings downstream into two major Brazilian watersheds. These events generated major losses to the environment and human life. Additionally, the biodiversity in both watersheds was still incompletely known. Two new species of the armoured catfish genus Hypostomus were discovered in the Rio Paraopeba and surrounding rivers of the Rio São Francisco Basin. The species share some main characteristics including a depressed body, large dark spots on a clearer background and the absence of keels on flanks. However, while one species (Hypostomus freirei sp. n.) has a large mandibular ramus and numerous slender teeth, the other (Hypostomus guajupia sp. n.) has a shorter mandibular ramus and few robust teeth. The discovery of these two new mid-sized fish species emphasizes the presumption that the effects of major environmental disasters cannot be fully estimated as local biodiversity is not completely known. This discovery in a recently devastated area also shows that tough environmental laws for the protection, supervision and mitigation...Continue Reading

References

Jul 13, 2007·Journal of Morphology·Tom GeerinckxDominique Adriaens
Jul 28, 2012·BMC Evolutionary Biology·Nathan K LujanJonathan W Armbruster
Nov 26, 2015·Science Advances·Nick M HaddadJohn R Townshend
Jul 15, 2016·Anais Da Academia Brasileira De Ciências·Camila F SalesRalph G Thomé
Sep 8, 2017·Scientific Reports·Vanessa HatjePeter Christian Hackspacher
Dec 7, 2018·Proceedings. Biological Sciences·Laura J SonterJames E M Watson
Dec 21, 2019·Molecular Phylogenetics and Evolution·Luiz Jardim de QueirozJuan I Montoya-Burgos
Mar 18, 2020·Ambio·Luciana Hiromi Yoshino KaminoFlávio Fonseca do Carmo

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