The Importance of Mealybugs and Colony Compatibility in Augmentation of Dolichoderus Thoracicus (Smith) (Hymenoptera: Formicidae) Populations in Cocoa

In the artificial introduction of the black cocoa ant Dolichoderus thoracicus (Smith) for cont rolling mirid damage in cocoa in Malaysia, initial establishment of introduced ants were often good but the effect was frequently not sustained. This under scored the need for augmentation of populatio...

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Bibliographic Details
Main Author:	Ho, Cheng Tuck
Format:	Thesis
Language:	English English
Published:	1991
Subjects:	Dolichoderus - Mealybugs - Case studies
Online Access:	http://psasir.upm.edu.my/id/eprint/10300/1/FP_1991_10_A.pdf
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id	my-upm-ir.10300
record_format	uketd_dc
spelling	my-upm-ir.103002011-03-22T00:42:40Z The Importance of Mealybugs and Colony Compatibility in Augmentation of Dolichoderus Thoracicus (Smith) (Hymenoptera: Formicidae) Populations in Cocoa 1991 Ho, Cheng Tuck In the artificial introduction of the black cocoa ant Dolichoderus thoracicus (Smith) for cont rolling mirid damage in cocoa in Malaysia, initial establishment of introduced ants were often good but the effect was frequently not sustained. This under scored the need for augmentation of populations of both the ant and its mutualistic mealybug Cataenococcus hispidus (Morrison). Honeydew of C. hispidus was demonstrated to be the main and preferred source of food of Q. thoracicus. This emphasises the need for mealybug establishment prior to ant introduction for success in establishment of the latter. Transport of C. hispidus by Q. thoracicus was established. Transport was the cumulative effect of random occasions of nymphs being carried in the mandibles of worker ants in the general direction of the ant's trails. Di rect spread of C. hispidus was effected by crawlers. Crawlers were most stimulated to do this when mother colonies were stressed, particularly through the dessication of host substrate. Dolichoderus - Mealybugs - Case studies 1991 Thesis http://psasir.upm.edu.my/id/eprint/10300/ http://psasir.upm.edu.my/id/eprint/10300/1/FP_1991_10_A.pdf application/pdf en public masters Universiti Pertanian Malaysia Dolichoderus - Mealybugs - Case studies Faculty of Agriculture English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Dolichoderus - Mealybugs - Case studies
spellingShingle	Dolichoderus - Mealybugs - Case studies Ho, Cheng Tuck The Importance of Mealybugs and Colony Compatibility in Augmentation of Dolichoderus Thoracicus (Smith) (Hymenoptera: Formicidae) Populations in Cocoa
description	In the artificial introduction of the black cocoa ant Dolichoderus thoracicus (Smith) for cont rolling mirid damage in cocoa in Malaysia, initial establishment of introduced ants were often good but the effect was frequently not sustained. This under scored the need for augmentation of populations of both the ant and its mutualistic mealybug Cataenococcus hispidus (Morrison). Honeydew of C. hispidus was demonstrated to be the main and preferred source of food of Q. thoracicus. This emphasises the need for mealybug establishment prior to ant introduction for success in establishment of the latter. Transport of C. hispidus by Q. thoracicus was established. Transport was the cumulative effect of random occasions of nymphs being carried in the mandibles of worker ants in the general direction of the ant's trails. Di rect spread of C. hispidus was effected by crawlers. Crawlers were most stimulated to do this when mother colonies were stressed, particularly through the dessication of host substrate.
format	Thesis
qualification_level	Master's degree
author	Ho, Cheng Tuck
author_facet	Ho, Cheng Tuck
author_sort	Ho, Cheng Tuck
title	The Importance of Mealybugs and Colony Compatibility in Augmentation of Dolichoderus Thoracicus (Smith) (Hymenoptera: Formicidae) Populations in Cocoa
title_short	The Importance of Mealybugs and Colony Compatibility in Augmentation of Dolichoderus Thoracicus (Smith) (Hymenoptera: Formicidae) Populations in Cocoa
title_full	The Importance of Mealybugs and Colony Compatibility in Augmentation of Dolichoderus Thoracicus (Smith) (Hymenoptera: Formicidae) Populations in Cocoa
title_fullStr	The Importance of Mealybugs and Colony Compatibility in Augmentation of Dolichoderus Thoracicus (Smith) (Hymenoptera: Formicidae) Populations in Cocoa
title_full_unstemmed	The Importance of Mealybugs and Colony Compatibility in Augmentation of Dolichoderus Thoracicus (Smith) (Hymenoptera: Formicidae) Populations in Cocoa
title_sort	importance of mealybugs and colony compatibility in augmentation of dolichoderus thoracicus (smith) (hymenoptera: formicidae) populations in cocoa
granting_institution	Universiti Pertanian Malaysia
granting_department	Faculty of Agriculture
publishDate	1991
url	http://psasir.upm.edu.my/id/eprint/10300/1/FP_1991_10_A.pdf
_version_	1747811091299172352

The Importance of Mealybugs and Colony Compatibility in Augmentation of Dolichoderus Thoracicus (Smith) (Hymenoptera: Formicidae) Populations in Cocoa

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