Name: | Description: | Size: | Format: | |
---|---|---|---|---|
604.82 KB | Adobe PDF |
Advisor(s)
Abstract(s)
A simple PCR-RFLP
consisting in the digestion of a fragment of the 12S ribosomal
RNA (12SrRNA) with species-specific
restriction enzymes (MboII and HinfI) was developed
to distinguish northeastern Atlantic species in the genus Atherina. Unambiguous
identification of morphologically similar sympatric species is frequently difficult, especially
when younger specimens are included in the analysis. Genetic and morphological
analysis of a total of 123 atherinids collected near the mouth of the Tagus estuary
(west Portugal) confirmed that only Atherina presbyter (sand smelt) adults and juveniles
are recurrently using these marine rocky habitats as spawning and nursery grounds,
respectively. The importance of applying non-destructive
methods is emphasized. In
the future, the conditions involved in the transition from marine A. presbyter to estuarine/
riverine A. boyeri should be further evaluated along with the ability of larvae and
juveniles to cope with river flow and tidal currents drift.
Description
Keywords
Inexistente
Citation
Journal of Applied Ichthyology, 33(2), 168-173. Doi: 10.1111/jai.13296
Publisher
Wiley