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Evidence of a landlocked reproducing population of the marine pejerrey Odontesthes argentinensis (Actinopterygii; Atherinopsidae)
Author(s) -
Colautti Darío C.,
Miranda Leandro,
GonzalezCastro Mariano,
Villanova Vanina,
Strüssmann Carlos A.,
Mancini Miguel,
Maiztegui Tomas,
Berasain Gustavo,
Hattori Ricardo,
Grosman Fabian,
Sanzano Pablo,
Lozano Ismael,
Vegh Sabina L.,
Salinas Victor,
Del Ponti Omar,
Fresno Pamela,
Minotti Priscila,
Yamamoto Yoji,
Baigún Claudio R. M.
Publication year - 2020
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.14207
Subject(s) - biology , meristics , actinopterygii , population , supralittoral zone , estuary , ecology , landlocked country , morphometrics , zoology , fishery , intertidal zone , demography , sociology , fish <actinopterygii> , political science , law
In South America, the order Atheriniformes includes the monophyletic genus Odontesthes with 20 species that inhabit freshwater, estuarine and coastal environments. Pejerrey Odontesthes argentinensis is widely distributed in coastal and estuarine areas of the Atlantic Ocean and is known to foray into estuaries of river systems, particularly in conditions of elevated salinity. However, to our knowledge, a landlocked self‐sustaining population has never been recorded. In this study, we examined the pejerrey population of Salada de Pedro Luro Lake (south‐east of Buenos Aires Province, Argentina) to clarify its taxonomic identity. An integrative taxonomic analysis based on traditional meristic, landmark‐based morphometrics and genetic techniques suggests that the Salada de Pedro Luro pejerrey population represents a novel case of physiological and morphological adaptation of a marine pejerrey species to a landlocked environment and emphasises the environmental plasticity of this group of fishes.