Identification of neurohypophysial hormones and the role of VT in the parturition of pregnant seahorses (Hippocampus erectus).

ABSTRACT: Neurohypophysial hormones regulate the reproductive behavior of teleosts; however, their role in the gestation and parturition of ovoviviparous fishes with male pregnancy (syngnathids) remains to be demonstrated. In the present study, the complementary DNA (cDNA) sequences of arginine vasotocin (VT) and isotocin (IT) from the lined seahorse (Hippocampus erectus) were cloned and identified. We observed that the mature core peptides of seahorse VT and IT were conserved among teleosts. In the phylogenic tree, seahorse VT and IT were clustered independently with teleost VT and IT. The tissue distribution patterns of VT and IT were similar, and both were highly expressed in the brain, gills, and gonads. Interestingly, they were also expressed to some extent in the brood pou

SUBMITTER: Zhang H 

PROVIDER: S-EPMC9372264 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature