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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Molecular and morphological diversity in species of Kronichthys (Teleostei, Loricariidae) from Atlantic coastal rivers of Brazil

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Author(s):
Souza, Camila S. [1] ; Silva, Gabriel S. C. [2] ; Ochoa, Luz E. [3] ; Roxo, Fabio F. [2] ; Costa-Silva, Guilherme J. [4] ; Foresti, Fausto [1] ; Melo, Bruno F. [1] ; Oliveira, Claudio [1]
Total Authors: 8
Affiliation:
[1] Univ Estadual Paulista, Inst Biociencias, Dept Biol Estrutural & Func, R Prof Dr Antonio CW Zanin 250, BR-18618689 Botucatu, SP - Brazil
[2] Univ Estadual Paulista, Inst Biociencias, Dept Bioestat Biol Vegetal Parasitol & Zool, Botucatu, SP - Brazil
[3] Univ Sao Paulo, Museu Zool, Sao Paulo - Brazil
[4] Univ Santo Amaro, Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Journal of Fish Biology; v. 98, n. 3 DEC 2020.
Web of Science Citations: 0
Abstract

The Neotropical catfish genus Kronichthys contains three species distributed along coastal rivers of southern and southeastern Brazil. Although phylogenetic hypotheses are available, the molecular and morphological diversity and species boundaries within the genus remain unexplored. In this study, the authors generated mitochondrial data for 90 specimens combined with morphometric and meristic data to investigate species diversity, species boundaries and putative morphological signatures in Kronichthys. Phylogenetic and species delimitation results clearly show the presence of four genetic lineages, three within Kronichthys heylandi along the coast from Rio de Janeiro to southern Sao Paulo and a single lineage encompassing both the nominal species Kronichthys lacerta and Kronichthys subteres from the Ribeira de Iguape basin to Santa Catarina in southern Brazil. Nonetheless, morphological data show overlapped ranges in morphometrics and a definition of only two morphotypes, with clear phenotypic differences in the teeth number: K. heylandi differs from K. subteres + K. lacerta by the higher number of premaxillary teeth (30-52 vs. 19-28) and higher number of dentary teeth (28-54 vs. 17-28). Headwater captures and connections of paleodrainages because of sea-level fluctuations represent the two major biogeographic processes promoting species diversification and lineage dispersal of Kronichthys in the Atlantic coastal range of Brazil. (AU)

FAPESP's process: 18/23883-9 - Electric fishes of the genus Sternarchorhynchus, a case of adaptative irradiation in continental scale? A phylogenomic and morphological approach
Grantee:Luz Eneida Ochoa Orrego
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 17/06551-0 - Characinae (Actinopterygii: Characiformes: Characidae): molecular identification and interspecific phylogenetic relationships
Grantee:Camila da Silva de Souza
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 14/26508-3 - Phylogeny of the hyperdiverse order Characiformes (Teleostei: Ostariophysi) using ultraconserved elements
Grantee:Claudio de Oliveira
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 16/11313-8 - Phylogeny of the Order Characiformes (Teleostei: Ostariophysi) using ultraconserved elements
Grantee:Bruno Francelino de Melo
Support Opportunities: Scholarships in Brazil - Post-Doctoral