[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
Main Menu
Home::
Journal Information::
Articles archive::
For Authors::
For Reviewers::
Registration::
Contact us::
Articles in press::
Publication Ethics::
::
Search in website

Advanced Search
..
Receive site information
Enter your Email in the following box to receive the site news and information.
..
Abstract in
..
:: Volume 7, Issue 1 (3-2020) ::
3 2020, 7(1): 33-40 Back to browse issues page
Induced-spawning of fish by hormone implantation
A. Rahdari , B. Falahatkar *
Abstract:   (2153 Views)
Injection of gonadotropin-releasing hormone analogues (GnRHs) produces luteinizing hormone (LH) from pituitary that stimulates gonadal maturation. In female fish, these analogues drive the final oocyte maturation, ovulation and finally spawning. Traditionally, they have been injected either intramuscularly or intraperitoneally. Depending on GnRH type, fish species and water temperature, one-step administration causes the peak of LH within 12-72 hours. In some fishes, this short-time effect of injection is enough for spawning during 2-3 days following the injection. However, asynchronous fishes need more injections but, multiple hormone injections are stressful and harmful and in the long-term, they inhibit reproduction. Therefore, sustained-release delivery systems can be used. A single application of GnRHa-delivery system enters GnRHa into the blood stream continuously, resulting pituitary stimulation for releasing LH that may take several weeks. Therefore, in delivery system, multiple injections can be replaced by single injection. There are different delivery systems includes: cholesterol pellets, ethylene-vinyl acetate implants, and biodegradable microspheres. This paper discusses the methods of hormonal implantation and possibility of its application in some Iranian fishes.
 
Keywords: Implantation, Hormone, Spawning, GnRH
Full-Text [PDF 640 kb]   (499 Downloads)    
Type of Study: Applicable | Subject: Special
Received: 2020/06/5 | Published: 2020/03/29
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML     Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Rahdari A, Falahatkar B. Induced-spawning of fish by hormone implantation. 3 2020; 7 (1) :33-40
URL: http://ornamentalaquatics.ir/article-1-222-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 7, Issue 1 (3-2020) Back to browse issues page
مجله علمی-ترویجی آبزیان زینتی Journal of Ornamental Aquatics
Persian site map - English site map - Created in 0.1 seconds with 38 queries by YEKTAWEB 4645