alexa Abstract | Reproductive biology of Female frigate tuna Auxis thazard (Lacepde, 1800) caught in Coastal marine waters of Cte dIvoire
ISSN ONLINE(2319-8753)PRINT(2347-6710)

International Journal of Innovative Research in Science, Engineering and Technology
Open Access

Like us on: https://twitter.com/ijirset_r
OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Research Article Open Access

Abstract

Some biological features (length-weight relationship, size at first sexual maturity, eggs variation in diameter, gonado-somatic index, hepato-somatic index, somatic condition and fecundity) and histological characteristics of frigate tuna Auxis thazard were studied. The study was carried out on 496 female fish caught in gillnets and measuring in size between 25 and 48 cm FL (centimetre Fork Length) collected from January to December 2004. The results indicated that female frigate tuna reach maturity at 29.88 cm FL. Spawning started in June while females at stage IV numbered 36.36% but it lessened in November. The peak value of gonado-somatic index, GSI (3.21 ± 0.93%), was attained in August and GSI thereafter decreased gradually from September to December. There is a direct correlation between GSI and hepato-somatic index (HSI), and an inverse correlation of these factors to the somatic condition (Kc). Absolute fecundity has linear relationship with the weights of specimens (AF = -9.3792 + 0.5485хW) as well as with the weights of ovaries (AF = 136.11 + 13.416хOW). Eggs frequency distribution within the maturity stages III (maturing or developing), IV (spawning), and V (post spawning) were also shown in the study.

To read the full article Peer-reviewed Article PDF image

Author(s): Laurent Bahou*, Célestin Atsé Boua, Marie-Anne d’Almeida and Tidiani Koné

Keywords

Absolute fecundity, Frigate tuna, Gonado-somatic index, Hepato-somatic index, Somatic condition, Biotechnology

Share This Page

Additional Info

Loading
Loading Please wait..
 
 
Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords