alexa Histopathological study on the effect of rice herbicides on grass carp (Ctenopharyngodan idella)


Toxicology: Open Access

Author(s): K Ramah

Abstract Share this page

A pot culture experiment followed by field experiments were conducted at Annamalai University Experimental Farm, to optimize the age of fingerlings to be released along with rice herbicides and to study the effect of rice herbicides on fish histopathology. Fingerlings of size 4 - 5 cm, when released 12 days after herbicide application was observed to be safe with 100% survival. Grass carp (Ctenopharyngodan idella) fingerlings were exposed to rice herbicides butachlor 1.5 kg ha-1, oxyfluorfen 0.25 kg ha-1 and thiobencarb 1.5 kg ha-1, 12 days after their application in the respective fields. To observe the impact of herbicides on the histopathology of the fish, the fingerlings were collected from the field trenches treated with herbicides at 15, 30 and 45 days after releasing into the field. The changes observed in the gill tissues are cartilagenous hyperplasia of gill rays, proliferation of lamellar epithelium and vacuolation of cytoplasm of lining epithelium, focal loss of lamellar epithelium and congestion of blood spaces. The changes in muscle tissues are swelling and necrosis of muscle fibres. The changes in liver tissues are congestion of sinosoids, congestion of central vein and proliferation of the bile ductular epithelium.

This article was published in African Journal of Biotechnology and referenced in Toxicology: Open Access

Relevant Expert PPTs

Relevant Speaker PPTs

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