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Free Content Sexual Maturation and Reproductive Cycle of Eledone Massyae, Voss 1964 (Cephalopoda: Octopodidae) in Southern Brazil

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Eledone massyae is a small benthic octopus found along Argentina and Southern Brazil. Maturation and reproductive cycle were studied based on 226 females and 111 males that were caught at different times of the year with trawl nets on the shelf and upper slope off Rio Grande do Sul, between 30° and 34°S. Females started to mature in the spring and attained advanced stages in the summer at a wide range of sizes. Neither fully mature nor spent females were found. Spawning is likely to take place during late summer on rough bottoms, at some distance from the trawling areas. Spermatangia were found within the ovary of maturing females mainly in spring. Fecundity ranged from 27 to 126, with a mean of 79, and was not influenced by female body size. Male maturation started in autumn at smaller body sizes than in females. Spermatophores were found in the spermatophoric sac from the end of autumn onwards, and the most advanced gonadal stages occurred in January. Mating seems to occur principally in spring.

Document Type: Research Article

Publication date: September 1, 1991

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