SciELO - Scientific Electronic Library Online

 
vol.48 issue3First record in Chile of dicyemids in the pygmean octopus Robsonella fontaniana (Cephalopoda: Octopodidae)Range extension of the non-indigenous alga Mastocarpus sp. along the Southeastern Pacific coast author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista de biología marina y oceanografía

On-line version ISSN 0718-1957

Abstract

ARRIAGADA, Daniel; LEPEZ, Irene; RUIZ, Maryori  and  CONTRERAS, Ingrid. Induction of spawning of the razor clam Ensis macha by injection of serotonin. Rev. biol. mar. oceanogr. [online]. 2013, vol.48, n.3, pp.653-660. ISSN 0718-1957.  http://dx.doi.org/10.4067/S0718-19572013000300023.

The effect of serotonin spawning stimulating agent, was evaluated in Ensis macha sexually mature broodstock, conditioned in laboratory. Neurotransmitter 0.9 ml at a concentration of 10-5 M was injected into the foot of each specimen. 5-HT induced gamete release in 92% of injected broodstock, always producing the fastest response in males, removing sperm at 36 min (± 15.9) after injection. The release of mature oocytes began at 170 min (± 42.4) post-injection. Embryonic development to the veliger larva formation, straight hinge D had a survival of 88%, no malformations have been observed in larvae. In only one trial, fertilized oocytes were not viable. Finally, we can confirm that there is a pattern in the release of mature gametes E. macha broodstocks due to the action of serotonin 5-HT and could be a useful tool for aquaculture practices.

Keywords : Ensis macha; serotonin; spawning.

        · text in Spanish     · Spanish ( pdf )