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Short‐term captivity drives hypothalamic plasticity and asymmetry in wild‐caught northern red bellied dace ( Chrosomus eos )
Author(s) -
Joyce Brendan J.,
Brown Grant E.
Publication year - 2020
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.14408
Subject(s) - captivity , boldness , biology , predation , zoology , fish <actinopterygii> , hypothalamus , ecology , fishery , endocrinology , psychology , social psychology , personality
Abstract Teleost fish are neuroplastic and are known to alter their brain morphology and behaviour in response to environmental change such as an increase in predation pressure. The hypothalamus plays a key role in regulating behavioural responses to predation risk. In this study, wild‐caught northern red bellied dace ( Chrosomus eos ) developed smaller and less symmetric hypothalami when held in captivity for 14 days; both measures correlated with boldness in a latency to emerge test. This study's results highlight the potential impact of short‐term holding conditions on brains and behaviour.