The present study provides the first assessment of the reproductive cycle of three common and widespread species of the genus Chiton, sympatric in rocky shores of Coquimbo, northern Chile (~30°S): C. granosus, C. cumingsii, and C. magnificus. From specimens seasonally sampled during a 2‐year period, a histological study was performed in order to describe the gonad structure and stages of gonadal development for each species. The morphological structure of the gonad was similar in the three species, with sexual cells developing from the gonad wall towards its center. The three species were gonochoric and iteroparous, with asynchronous gamete maturation at population level; in all seasons, sexual maturity was evident in small to large individuals of each species (≥25 mm in total length for C. cumingsii and C. granosus, and ≥47 mm for C. magnificus).

中文翻译：

---

东南太平洋温带多岩石海岸上奇顿三种物种生殖周期的初步比较评估

本研究对智利北部科金博多岩石海岸的同伴同伴奇顿属的三种常见和广泛繁殖物种（约30°S）的第一个评估：C. granosus，C。cumingsii和C. magnificus。从两年中季节性取样的标本中，进行了组织学研究，以描述每种物种的性腺结构和性腺发育阶段。这三个物种中性腺的形态结构相似，性细胞从性腺壁向中心发育。这三个物种是淋病的和胎生的，在种群水平上具有非同步配子成熟。在所有季节，性成熟在小明显大的个体每个物种的（≥25毫米总长度C. cumingsii和C. granosus，和≥47毫米为C. magnificus）。