SciELO - Scientific Electronic Library Online

vol.48 issue2Análisis espacio temporal de la biología reproductiva y el reclutamiento del molusco bivalvo Anadara tuberculosa en la costa del Pacífico colombianoEvaluation of biopsy systems for sampling white shark Carcharodon carcharias (Lamniformes: Lamnidae) muscle for stable isotope analysis author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista de biología marina y oceanografía

On-line version ISSN 0718-1957


ALFARO-MONTOYA, Jorge. Histological description of oogenesis and spermatogenesis in the cultured shrimp, Litopenaeus vannamei. Rev. biol. mar. oceanogr. [online]. 2013, vol.48, n.2, pp.335-344. ISSN 0718-1957.

This research describes detailed stages of oogenesis and spermatogenesis at histological level in the white shrimp of the western Pacific, Litopenaeus vannamei. Both processes were studied in cultured organisms under reproduction conditions in the laboratory. Oogenesis was histologically analyzed from the proliferation of 9 µm oogonia and their growth into primary oocytes passing through different phases of previtellogenesis: stages of synapsis, chromatin nucleolus, early perinucleolus and late perinucleolus of 84-94 µm. Primary vitellogenesis was observed in primary oocytes of 71-112 µm, containing acidophilic globules and surrounded by a layer of thick follicle cells (12-35 µm). Secondary vitellogenesis is evident in oocytes of 165-202 µm with numerous acidophilic granules in the cytoplasm and surrounded by thin follicle cells; then cortical crypts appear, indicating the stage of prematuration and preparation for ovulation. Spermatogenesis was characterized at light microscopy from spermatogonia and their gradual maturation into primary and secondary spermatocytes, early, mid and advanced spermatids and sperm. The process is synchronous in regions of seminiferous tubules, and asynchronous in neighboring tubules, generating cells at different stages up to mid spermatids in the testicles. Advanced spermatids and spermatozoa were only observed in the vasa deferentia; this finding appears not to be universal in Penaeidae.

Keywords : Penaeidae; spermatogenesis; oogenesis; Litopenaeus vannamei.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License