English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

A great diversity of animal species adapted to life in the semi-arid Caatinga of northeastern Brazil, including seasonal killifishes, has been reported in the last three decades. More recently, field and molecular data have shown a high occurrence of cryptic species. The killifish group herein analysed, the    Hypsolebias   magnificus    species complex, is endemic to the middle and southern portion of the Caatinga, occupying about 120 km along the floodplains of the middle São Francisco River and some adjacent tributaries. Species of this complex are rare and presently considered threatened with extinction, being uniquely found in pools protected by trees and bushes. Single-locus delimitation methods were used to test species limits of populations displaying different colour patterns along the whole distribution of the complex. All analyses consistently supported the three nominal species and two new, herein described:    H.   gardneri    Costa,  sp. n. , from the floodplains of the middle São Francisco River and    H.   hamadryades    Costa,  sp. n. , from the Gorotuba River floodplains. The phylogenetic analysis highly supports    H.   hamadryades    as sister to a clade comprising    H.   gardneri    and    H.   harmonicus   . Our field observations suggest that    H.   hamadryades    is a miniature species. This study indicates that the    H.   magnificus    complex comprises cryptic species apparently endemic to small areas and extremely vulnerable to environmental changes, deserving high concern.

zookeys

Cryptic species diversity in the    Hypsolebias   magnificus    complex, a clade of endangered seasonal killifishes from the São Francisco River basin, Brazilian Caatinga (  Cyprinodontiformes  ,   Aplocheilidae  )