Reproductive Biology of the Gorgonian Leptoprgia hebes (Verrill).

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Reproductive Biology of the Gorgonian Leptoprgia hebes (Verrill).

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Title: Reproductive Biology of the Gorgonian Leptoprgia hebes (Verrill).
Author: Beasley, SE; Dardeau, MR; Schroeder, WW
Abstract: A population of the gorgonian, Leptogorgia hebes, was sampled monthly between April 1991 and April 1992 from a hardbottom area approximately 28 km south-southeast of Dauphin Island, Alabama in the northern Gulf of Mexico. L. hebes, a gonochoric species with a sex ratio biased in favor of female colonies (1 :2), had gonads concentrated in distal branches of colonies. Histological analysis revealed an annual cycle of gonadal development; oogenesis began in January while spermatogenesis lagged behind, with primary spennatocytes not appearing until April and May. Gonads developed through the warm summer months, reaching maxima in numbers and diameter just before spawning in late August or early September. Both eggs and sperm were released between August and September collections. Age was determined by counting axial rings which appeared to exhibit annual periodicity. Age at first reproduction for female colonies was two years while male colonies delayed reproduction until six years old.
Description: American Academy of Underwater Sciences (http://www.aaus.org/)
URI: http://archive.rubicon-foundation.org/4735
Date: 2003

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