Abstract—

Gonadal structure, oocyte morphology, sperm motility after the activation, and spermatozoa ultrastructure are studied in Papuan scorpionfish Scorpaenopsis papuensis. The oocytes are attached to peduncles originated from ovigerous stroma. The stroma is located in the center of each of two separated ovaries. Based on oocyte diameter distribution, the type of oogenesis is continuous and oocyte deposition is multiple. Spermatozoa at a concentration of 0.005–0.011 × 10⁹ spz/mL are observed in the hypertrophied urinary bladder. Following the activation, spermatozoa obtained from the testes retain high progressive motility for at least 13 min. Based on spermatozoon shape, Sc. papuensis does not notably different from other representatives of the suborder Scorpaenoidei with external fertilization. The nuclear fossa in the spermatozoon nucleus base is absent, and the proximal and distal centrioles are characterized by orthogonal position.

中文翻译：

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巴布亚蝎鱼（Scorpaenopsis papuensis）（Scorpaenidae）的生殖生物学特征

摘要—

研究了巴布亚蝎鱼（Scorpaenopsis papuensis）的性腺结构，卵母细胞形态，激活后的精子运动以及精子超微结构。卵母细胞附着在源自卵生间质的花序梗上。基质位于两个分开的卵巢的中心。根据卵母细胞直径分布，卵子发生的类型是连续的，卵母细胞的沉积是多种的。在肥厚的膀胱中观察到精子浓度为0.005-0.011×10 ⁹ spz / mL。激活后，从睾丸获得的精子至少在13分钟内保持较高的进行性运动能力。基于精子形状，Sc。巴布族与外部施肥的蝎子亚目亚目的其他代表没有显着差异。精子核基部不存在核窝，并且近端和远端中心体的特征是正交位置。