The Effects of Eyestalk Ablation on the Androgenic Gland and the Male Reproductive Organs in the Kuruma Prawn <i>Marsupenaeus japonicus</i>.

ABSTRACT: Insulin-like androgenic gland factor (IAG) is considered a key regulator of male sexual differentiation and maturation in decapod crustaceans. In several species, IAG expression is thought to be negatively regulated by the eyestalk, as demonstrated by eyestalk ablation (ESA) experiments. In the kuruma prawn Marsupenaeus japonicus, however, the upstream regulatory mechanisms of IAG (Maj-IAG) remain largely unclear. In the present study, males of different body sizes were subjected to ESA to elucidate these mechanisms. Bilateral ESA induced upregulation of Maj-IAG expression from day 7 onward, whereas unilateral ESA did not. Moreover, enhanced development of male reproductive organs and hypertrophy of the androgenic gland were observed from day 7 after bila

SUBMITTER: Furukawa T 

PROVIDER: S-EPMC12729900 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature