Ultrasound imaging identifies life history variation in resident Cutthroat Trout.

ABSTRACT: Human activities that fragment fish habitat have isolated inland salmonid populations. This isolation is associated with loss of migratory life histories and declines in population density and abundance. Isolated populations exhibiting only resident life histories may be more likely to persist if individuals can increase lifetime reproductive success by maturing at smaller sizes or earlier ages. Therefore, accurate estimates of age and size at maturity across resident salmonid populations would improve estimates of population viability. Commonly used methods for assessing maturity such as dissection, endoscopy and hormone analysis are invasive and may disturb vulnerable populations. Ultrasound imaging is a non-invasive method that has been used to measure reproductive status across fish ta

SUBMITTER: Carim KJ 

PROVIDER: S-EPMC7857566 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature