Sex Determination of Sea Cucumber Acaudina rosettis from Madura Straits, Indonesia

D. Winarni, Lita Lestari, A. Hayati, Nithasya Nabilla, F. Khaleyla
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Abstract

Acaudina rosettis is one of the commercial sea cucumber species that is widely consumed on the east coast of Surabaya, East Java, Indonesia. Although its abundance in nature has begun to show signs of decreasing, studies on this species are still very limited. This study aimed to examine indicators that can be used to determine the sex of A. rosettis individuals. Acaudina rosettis samples were collected from Madura strait in the mid of Hijri month for three months. The sea cucumber samples were then dissected. Body wall without viscera and gonads was weighed. The gonads were then characterized macroscopically and microscopically, prepared into histological slides with hematoxylin-eosin staining. The results showed that A. rosettis samples could be classified into three sex groups based on the type of gamete cells observed in the tubules; male (spermatogenic), female (oogenic), and undetermined sex (no gamete cells found). Gonads had three colors; yellow, pink, and orange and were in five stages of reproductive phase; gametogenesis (G), mature (M), spawning (S), and post-spawning (PS). Male samples had yellow and orange gonads, female samples were pink and orange, and all undetermined sex were orange. The G gonads were yellow and orange, M were yellow and pink, while S and PS were orange. Body wall and gonad weight at the same reproductive phase did not show any difference between males and females. Based on the results, gonad color can be used as an indicator of sex determination, but only in G and M reproductive phases.
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印尼马杜拉海峡海参性别的测定
Acaudina rosettis是一种商业海参,在印度尼西亚东爪哇泗水东海岸广泛消费。虽然其在自然界中的丰度已经开始显示出减少的迹象,但对该物种的研究仍然非常有限。本研究的目的是研究可用于确定蔷薇个体性别的指标。在回历月中,在马杜拉海峡采集了3个月的海葵样本。然后对海参样本进行解剖。称重不含脏器和性腺的体壁。然后对性腺进行宏观和微观观察,并用苏木精-伊红染色制成组织学切片。结果表明,根据小管配子细胞的类型,蔷薇可分为3个性别群体;男性(生精),女性(生卵),以及未确定性别(未发现配子细胞)。性腺有三种颜色;黄、粉、橙,处于生殖期的五个阶段;配子发生(G),成熟(M),产卵(S)和产卵后(PS)。男性样本的性腺为黄色和橙色,女性样本的性腺为粉色和橙色,所有未确定性别的性腺均为橙色。G性腺为黄色和橙色,M性腺为黄色和粉色,S和PS性腺为橙色。在同一生殖期,体壁和性腺重量在雌雄之间无显著差异。根据结果,性腺颜色可以作为性别决定的指标,但仅在G和M生殖阶段。
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