JEB logo

Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

About Journal
    Editorial Board
    Reviewer Panel
    RnD Division
    Subscription Info
    Contact Journal
Read Journal
    Current Issue
    Journal Archives
For Authors
    Authoring Guidelines
    Publication Process
    Track Paper Status

Search the Journal web-site through Google:

        Abstract - Issue Apr 2006, 27 (2)                                                                                                             Back


Effect of nitrate-related compounds on growth, survival and hematological responses in tadpoles of the Cuban tree frog, Osteopilus septentrionalis (Boulenger)


F. Punzo1 and S. Law2

1 Department of Biology, Box 5F, University of Tampa, Tampa, Florida 33606, USA

2 P.O. Box 546, Tampa, Florida 33606, USA


(Received: 16 April, 2004 ; Accepted: 08 February, 2005)



Abstract: Experiments were conducted to assess the effects of nitrate-related compounds on survival, growth, and hematological responses in tadpoles of the Cuban treefrog, Osteopilus septentrionalis . Stage-25 tadpoles were exposed to a nitrate dilution series and exposed to distilled water (controls), 40 ppm nitrate, or 100 ppm nitrate. Survivorship was significantly higher for control animals as compared to those exposed to 40 and 100 ppm nitrate. Total blood Hb concentrations were not significantly altered by exposure to sodium nitrite, and a significant positive correlation was found between methemoglobinemia and nitrite concentration over the test range of 1.0 to 50.0 mg/l. Percentage Hb was significantly correlated with nitrite concentration. Percentage MHb for all treatment groups was significantly higher (18.4 to 45.3 %) than that of controls (5.4 %).


Key words: Growth, Hematological responses, Nitrate, Osteopilus.




Copyright 2006 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).