Age structure and sex ratio of thrip Scirtothrips dorsalis hood (Thysanoptera: Thripidae) associating with mango agroecosystem in East Java, Indonesia

Issue Date

10-2013

Abstract

A research aimed to investigate the age structure and sex ratio of S. dorsalis Hood in mango agroecosystem has conducted at PT. Trigatra Rajasa farm, Situbondo, East Java, Indonesia, from April to May 2013. A Completely Randomized Design, Analysis of Variance and Least Significant Difference were used to design, knew the variance and significantly different among the treatment, respectively. Thirteen mango trees set in cross section were sampled and observed for the presence of S. dorsalis including weeds under the mango canopy and four cardinal directions of border. The sample was taken every week for one month. The result showed that instar one and adult were preferred to associate with weeds under the mango canopy and borders compared to mango leaves, except second instar. Further, observation was presented that all the age structures were given equal male female sex ratio. Based on the total number of population, there was no significant difference in age structure and sex ratio of S. dorsalis associating with weeds inside the orchard including mango leaves and borders. Twenty-seven species of weeds were discovered to associate with mango agroecosystem and were comprehensively discussed based on what was the most dominant and preferred by S. dorsalis.

Source or Periodical Title

Agrivita

ISSN

0126-0537

Volume

35

Issue

3

Page

227-236

Document Type

Article

Physical Description

tables

Language

English

Subject

Age structure, Mango, S.dorsalis, Sex ratio, Weeds

Identifier

doi:10.17503/Agrivita-2013-35-3-p227-236.

Digital Copy

yes

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