Rearing in strontium-enriched water induces vaterite otoliths in the Japanese rice fish, Oryzias latipes.

ABSTRACT: Sagittal otoliths, typically composed of aragonite, are frequently laid down rather as vaterite during growth in hatchery-reared fish populations. Sagittal vateritization is believed to impair individual hearing/balancing abilities, but the causal mechanism remains unclear. Here we experimentally demonstrated that rearing in Sr-rich water induces sagittal vateritization in the HdrR-II1 inbred strain of the Japanese rice fish, Oryzias latipes. Both sagittae were partly vateritized in 70% of individuals subjected to the Sr²⁺ treatment (n = 10), whereas fish reared in normal tap water showed no sagittal vateritization (n = 8). Our result is consistent with the theoretical prediction that vaterite becomes thermodynamically more stable than aragonite as the Sr

SUBMITTER: Murase I 

PROVIDER: S-EPMC10265005 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature