Click here to close Hello! We notice that you are using Internet Explorer, which is not supported by Echinobase and may cause the site to display incorrectly. We suggest using a current version of Chrome, FireFox, or Safari.
Z Parasitenkd 1978 Mar 16;551:73-89. doi: 10.1007/bf00383478.
Show Gene links Show Anatomy links

[Reproduction and sexuality of parasitic copepods of fishes. I. The reproductive apparatus of Chondracanthus angustatus Heller, 1865: anatomy, histology, and spermiogenesis (author''s transl)].

Rousset V , Raibaut A , Manier JF , Coste F .

The pygmy males of Chondracanthus angustatus are fixed on the genital segment of the female on two anterior-ventral tubercules. The genital system is formed by two dorsal testes, two broad vas deferens and two seminal vesicles each one containing a spermatophore. Two types of cells can be seen in the interstitial tram: the sexual (normal and abortive) and the somatic ones. The plasmic and nuclear membranes joined together on one end of the spermatid; on the opposite pole, the mitochondria penetrate into the cytoplasmic expansions. The non-motile starfish spermatozoa present neither di-ferentiated acrosome nor centrioles. The male gametes are stocked in the spermatophore and enveloped by many kinds of secretions. Spermatozoa are discharged into the female integument folds and they reach the seminal receptacle with the help of the villosities movement; they stay there till fertilization occurs.

PubMed ID: 654426
Article link: Z Parasitenkd

Genes referenced: ddx4 pole

References [+] :
Párducz, Ciliary movement and coordination in ciliates. 1967, Pubmed