Inter-population differences in salinity tolerance and osmoregulation of juvenile wild and hatchery-born Sacramento splittail.

ABSTRACT: The Sacramento splittail (Pogonichthys macrolepidotus) is a minnow endemic to the highly modified San Francisco Estuary of California, USA and its associated rivers and tributaries. This species is composed of two genetically distinct populations, which, according to field observations and otolith strontium signatures, show largely allopatric distribution patterns as recently hatched juveniles. Juvenile Central Valley splittail are found primarily in the nearly fresh waters of the Sacramento and San Joaquin rivers and their tributaries, whereas San Pablo juveniles are found in the typically higher-salinity waters (i.e. up to 10‰) of the Napa and Petaluma Rivers. As the large salinity differences between young-of-year habitats may indicate population-specific differences in salinity toleran

SUBMITTER: Verhille CE 

PROVIDER: S-EPMC4758839 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature