Melanomacrophage proliferation in the spleen of Nile tilapia (Oreochromis niloticus L.) as biomarker of insecticides loading from the waters of Laguna de Bay, Municipality of Bay, Laguna, Philippines
by Maryjoie A. Armero-Lituañas; Pablo P. Ocampo
International Journal of Agricultural Resources, Governance and Ecology (IJARGE), Vol. 11, No. 1, 2015

Abstract: Massive use of insecticides along Laguna de Bay exacerbates the poor condition of the lake waters. Hence, this study was done to evaluate the size and number of Melanomacrophage (MMCs) of ten freshly caught sampled O. niloticus L. (April 2010-May 2010, dry season; October 2010-November 2010, wet season) collected from bay fish cages with no sexual preferences and from a reference pond per season for five consecutive weeks. The spleen was obtained and stained by Perl's technique. The study revealed that there were significant (P < 0.05) differences in the number of splenic MMCs during the dry season while there were no significant differences (P > 0.05) during the wet season. Also, there were no significant differences (P > 0.05) in the sizes of MMCs for both seasons. The results, suggest that MMCs are reliable biomarkers for water quality in terms of environmental stress because of insecticides loading.

Online publication date: Thu, 11-Jun-2015

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Agricultural Resources, Governance and Ecology (IJARGE):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email