Free Content Reproductive Biology of Octopus Hubbsorum (Mollusca: Cephalopoda) Along the Central Mexican Pacific Coast

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The reproductive biology of Octopus hubbsorum Berry, 1953, was studied along the central Mexican Pacific from 1998 to 2000. In the majority of the months (15), the sex ratio was 1:1. The ratio of males to females decreased consistently with respect to size, weight, and sexual maturity, probably related to vertical migrations of females from deeper to shallow areas, the search of better feeding areas before reproduction, and nesting behavior of females. The dorsal mantle length and the total body weight of individuals at first maturity were 115 mm and 758 g for females, and 70 mm and 320 g for males. Three maturity stages were recognized for females (maturing, mature, and spawning and/or already spawned) and three for males (immature, maturing, and mature). The females have low potential fecundity (mean ± SD = 172.05 ± 85.15 oocytes/female) and small oocytes (mean = 1.79 ± 0.14 mm), compared to other species of Octopus. The mean (±SD) potential fecundity of males was 65.92 ± 34.34 spermatophores/male. As in other Octopus spp., O. hubbsorum spawns throughout the year. However, potential fecundity of males and the number of mature and spawning females increased significantly during the cool-dry season. The presence of a constant mature population may be related to generally warm conditions during most of the year.

Document Type: Research Article

Publication date: January 1, 2009

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