Selection for small body size favours contrasting sex-specific life histories, boldness and feeding in medaka, Oryzias latipes.

ABSTRACT:

Background

Studying variation in life-history traits and correlated behaviours, such as boldness and foraging (i.e., pace-of-life syndrome), allows us to better understand how these traits evolve in a changing environment. In fish, it is particularly relevant studying the interplay of resource abundance and size-selection. These are two environmental stressors affecting fish in natural conditions, but also associated with human-induced environmental change. For instance, fishing, one of the most important threats for freshwater and marine populations, results in both higher mortality on large-sized fish and reduced population density.

Results

Medaka, Oryzias latipes, from lines selected for large or small size over ten generations, were exposed individually to high or low fo

SUBMITTER: Diaz Pauli B 

PROVIDER: S-EPMC6585084 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature