Meristic and morphological differentiation of Orestias species (Teleostei; Cyprinodontiformes) from the southern Altiplano
Author
dc.contributor.author
Scott Alarcón, Sergio
Author
dc.contributor.author
Muñoz-Rojas, Pablo
Author
dc.contributor.author
Vila Pinto, Irma
Admission date
dc.date.accessioned
2020-08-10T13:55:26Z
Available date
dc.date.available
2020-08-10T13:55:26Z
Publication date
dc.date.issued
2020
Cita de ítem
dc.identifier.citation
Environ Biol Fish (2020) 103:939–951
es_ES
Identifier
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10.1007/s10641-020-00995-4
Identifier
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https://repositorio.uchile.cl/handle/2250/176368
Abstract
dc.description.abstract
Orestias is an endemic fish genus of lacustrine
and lotic systems distributed on theAndes highland region
(Altiplano) of Peru, Bolivia and Chile (9°S to 22°S).
Based on morphological characters, taxonomic studies
have recognized seven species on the Chilean western
southern Altiplano region (17°S - 22°S). The current
geographical distribution of Orestias would be associated
with historical vicariant events and fluctuations in water
levels since the Pleistocene. In this context, this group
arises as an interesting model to assess Orestias morphological
adaptations in Altiplano systems. Morphological
and meristic analyses were performed on ten populations
of Orestias in the southern Altiplano. The results showed
significant differences among populations. The meristic
and morphometric characters were related to physical and
chemical properties of their habitat. We considered the
systematic validation of the Orestias species and the possible
future determination of new species of the populations
of O. cf. agassii of Huasco saltpan, Isluga River and
Chuviri wetland, which should be tested with trophic,
genetic and karyotype analyses.
es_ES
Patrocinador
dc.description.sponsorship
Comisión Nacional Científica y Tecnológica Project
1140543