Impact of azadirachtin on the haemodynamics of Cyrtacanthacris tatarica L. (Acrididae: Orthoptera)

John, P A and Ananthakrishnan, T N (1995) Impact of azadirachtin on the haemodynamics of Cyrtacanthacris tatarica L. (Acrididae: Orthoptera). Journal of Entomological Research, 19 (4). pp. 285-290. ISSN 0378-9519

[img] PDF
Restricted to ICRISAT users only

Download (250kB) | Request a copy

Abstract

Haemocoelic injection of azadirachtin (2, 4 and 6 μl/g body weight of the test insect) into the final instar female nymphs of Cyrtacanthacris tatarica L. increased the haemolymph volume significantly than the ethanol-injected individuals. Total haemocyte count (THC), computed from four recorded haemocytes (prohaemocytes, spherulocytes, granulocytes and plasmatocytes) decreased with increasing concentration of azadirachtin and the overall reduction ranged from 31 to 41%. A dose-dependent inverse relationship was obtained between the haemolymph volume and total haemocyte number. Bulging of cytoplasm, membrane breakdown and release of cytoplasmic materials were recorded in plasmotocytes, while granulocytes showed vacuoles in the cytoplasm and nucleus. However, no such deformities were observed in prohaemocytes and spherulocytes

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Subjects: Mandate crops > Millets
Mandate crops > Groundnut
Depositing User: Ms K Syamalamba
Date Deposited: 26 Jun 2013 09:09
Last Modified: 26 Jun 2013 09:09
URI: http://oar.icrisat.org/id/eprint/6879
Official URL: http://indianjournals.com/ijor.aspx?target=ijor:je...
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
Links:

Actions (login required)

View Item View Item