Journal of Food, Agriculture and Environment




Vol 12, Issue 1,2014
Online ISSN: 1459-0263
Print ISSN: 1459-0255


Weight and mortality variation of the Hippodamia convergens larvae fed with Myzus persicae raised in kale under different doses of nitrogen


Author(s):

Julio César Guerreiro 1*, Felipe Augusto Perugini Ferreti 2, Valéria Cristina Leite Baccili 3, Tiago Roque Benetoli da Silva 1, Pedro José Ferreira Filho 4

Recieved Date: 2013-11-23, Accepted Date: 2014-01-28

Abstract:

Coccinellids are important predators of agricultural pests in several agriecosystems. Understanding the behaviour of these insects in a behavioural change of their prey is extremely important in pest management. This study aimed to evaluate the weight increase and mortality effect of ladybird Hippodamia convergens fed with Mizus persicae coming from kale (Brassica oleracea). It was developed in pots of 5 dm3 and fertilized with different levels of nitrogen at planting. Four treatments were used, they were 0.0, 2.2, 4.4 and 8.8 g N/pot, values of 0, 50, 100 and 200% of the recommended dose for culture. Newly hatched larvae of H. convergens were isolated in Petri dishes using 20 larvae / treatment. Aphids M. persicae were provided “ad libitum” as food, they came from pots with different levels of nitrogen. At the end of each instar, mortality and weight of larval coccinellids were evaluated. The data was submitted to analysis of variance and means were compared by Tukey test at 5% probability. Tests of polynomial regression were performed between the values of weights of larvae and the nitrogen supplied to plants where the aphids were created. It was observed that the nutritional characteristics of plants could indirectly influence the body weight gain of larvae of H. convergens. Ladybirds that were fed with aphids coming from plants with high nitrogen levels had higher weight gain; however it had no influence on their mortality. Foods richer in nutrients can offer competitive advantages adaptive to coccinellids.

Keywords:

Lady beetle, aphids, IPM


Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 1
Category: Agriculture
Pages: 294-297


View full PDF
Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.


Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :