Reproductive Biology and Sex Hormone Levels of Gravid and Non Gravid Female Swamp Eel (Monopterus albus) Broodstock during Spawning Season
Keywords:
reproductive biology,, female broodstock, Monopterus albus, spawning seasonAbstract
This study was aimed to compare reproductive biology indices and sex hormone levels of gravid and non gravid female swamp eel (Monopterus albus) broodstock during spawning season. A total of 10 female M. albus broodstock samples in each group were collected from Bang Lamphu market, a local market in Khon Kaen province in July 2016. Body weight and total length were measured. Reproductive biology indices of female M. albus broodstock were considered include gonadosomatic index (GSI), fecundity, egg diameter, oocyte development and sex hormone (testosterone and 17β-estradiol). It was found that GSI and egg diameter of the gravid broodstock were significantly higher than that of the non gravid broodstock (P<0.01). In addition, oocyte development of gravid broodstock revealed late vitellogenic oocytes and mature oocytes stages, while oocytes of non gravid broodstock only revealed cortical alveoli, early and mid vitellogenic stages.
Published
How to Cite
Issue
Section
License
This article is published under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0), which allows others to share the article with proper attribution to the authors and prohibits commercial use or modification. For any other reuse or republication, permission from the journal and the authors is required.