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http://krishi.icar.gov.in/jspui/handle/123456789/32475
Title: | Biology and seasonal dynamics of Snellenius maculipennis, a larval parasitoid of castor semilooper |
Other Titles: | Biology and seasonal dynamics of Snellenius maculipennis, a larval parasitoid of castor semilooper |
Authors: | ICAR_CRIDA |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR_CRIDA |
Published/ Complete Date: | 2005 |
Project Code: | Not Available |
Keywords: | seasonal dynamics ,Snellenius, maculipennis,,solitary larval endoparasitoid,castor/ |
Publisher: | Prasad, Y.G. |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | The biology and seasonal dynamics of Snellenius maculipennis, a solitary larval endoparasitoid of castor semilooper, Achaea janata, were studied in both laboratory and field conditions. The egg+larval, pupal and adult periods lasted for 6.25±0.96, 5.08±0.90 and 3.5±1.02 days, respectively. Under laboratory conditions, the parasitoid completed its life cycle in 14.83±2.88 days. Host larvae showed reduced feeding in the first 5-6 days after parasitization until the exit of the grub from the host body for pupation. After the parasitoid exited, the host larvae survived up to 4-6 days but exhibited complete feeding cessation leading to drastic reduction in growth. The parasitoid was active from August to October and the peak parasitism across 3 years (2001 to 2003) in the field (Hyderabad, Andhra Pradesh, India) ranged from 68 to 96%. Three years pooled data on larval counts and number of parasitized larvae per plant recorded at weekly interval revealed a linear relationship between them. Two species of hyperparasitoids, Mesochorus pilicornis (Hymenoptera: Ichneumonidae) and Brachymeria secundaria (Hymenoptera: Chalcididae), were recorded on S. maculipennis for the first time. The extent of hyperparasitism was between 26 and 38% during August to October. The nature of exit hole on the cocoons of S. maculipennis was described to record the level of hyperparasitism under field conditions. Compatibility study with A. janata granulosis virus revealed that 69% of parasitized larvae collected from virus treated plots showed presence of viral infection. The potential of S. maculipennis in the natural biological control of A. janata and the need for its conservation are discussed. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Technical Report |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Biol. Control 19: 29-34. |
Volume No.: | 19 |
Page Number: | : 29-34. |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/32475 |
Appears in Collections: | NRM-CRIDA-Publication |
Files in This Item:
File | Description | Size | Format | |
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19 Biology and seasonal dynamics of Snellenius maculipennis, a larval parasitoid of castor semilooper.pdf | 491.97 kB | Adobe PDF | View/Open |
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