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Mating behaviors in ovoviviparous black rockfish(Sebastes schlegelii):molecular function of prostaglandin E2 as both a hormone and pheromone

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Marine Life Science & Technology 2024年第1期6卷 15-30页

作者： Likang Lyu Yijia Yao Songyang Xie Xiaojie Wang Haishen Wen Yun Li Jianshuang Li Chenpeng Zuo Shaojing Yan Jingyi Dong Xin Qi Key Laboratory of Mariculture(Ocean University of China) Ministry of EducationOcean University of ChinaQingdao 266003China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China

Prostaglandins(PGs)are profound hormones in teleost sexual behavior,especially in *** act as pheromones that affect the olfactory sensory neurons of males,inducing the initiation of a series of mating ***,the molecular mechanism by which PGs trigger mating behavior in ovoviviparous teleosts is still *** the present study,we employed the ovoviviparous black rockfish(Sebastes schlegelii),an economically important marine species whose reproductive production is limited by incomplete fertilization,as a model *** results showed that when the dose of PGE2 was higher than 10 nmol/L,a significant(P<0.05)increase in mating behaviors was ***-fluorescence in situ hybridization indicated that PGE2 could fire specific neurons in different brain regions and receptor cells in the olfactory *** combining with specific neurons in the central nervous system(CNS),a series of genes related to reproduction are *** intracerebroventricular administration of PGE_(2) significantly increased lhb levels(P<0.05)in both ***,steroidogenesis in gonads was also affected,inducing an increase(P<0.05)in E_(2) levels in males and T levels in ***_(2) levels were also increased significantly(P<0.05)in both *** present study revealed that PGE2 can activate mating behavior in black rockfish in both hormone and pheromone pathways,leading to variations in sex steroid levels and activation of reproductive *** results provide not only novel insight into the onset of mating behaviors in ovoviviparous teleosts but also solutions for the incomplete fertilization caused by natural mating in cage aquaculture.

关键词： Black rockfish Mating behavior ovoviviparity Prostaglandin E2

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