NDLI: Population dynamics of Dasiops inedulis (Diptera: Lonchaeidae) and its biotic and abiotic mortality factors in Colombian sweet passionfruit orchards

Content Provider	Springer Nature Link
Author	Carrero, Diego A. Melo, Daniel Uribe, Sandra Wyckhuys, Kris A. G.
Copyright Year	2013
Abstract	Throughout South America, the lonchaeid flies Dasiops spp. are important herbivores of passionfruit crops. However, little is known on the biology and ecology of these insects, resulting in inadequate pest management schemes. In this study, we describe Dasiops inedulis population dynamics in Colombian sweet passionfruit (SP; Passiflora ligularis Juss.) and elucidate biotic mortality factors at different fly developmental stages. From August 2009 to July 2010, D. inedulis and Dasiops spp. abundance was assessed through monthly McPhail bait trapping and collection of SP flower buds, flowers, and immature fruits. Mortality levels of D. inedulis were determined for early instar larvae by ovary dissection and for late-instar larvae or pupae by prey removal trials. Maximum infestation reached 80 % in fruits and flower buds, and bud infestation correlated with precipitation during the previous month. Two days after oviposition, 8.2 ± 2.3 (mean ± SD) Dasiops sp. eggs were found in SP ovaries and 4.4 ± 1.2 late-instar larvae were recovered from immature fruits at day 14. Upon larval drop on the orchard soil, 74.8 % larvae burrowed within the soil within 9 min, while 12.5 % larvae were attacked by ants. In-field mortality of young pupae amounted to 75.3 ± 7.0 %, with vertebrate predators likely causing 12.1 ± 6.0 % mortality. Late-instar larvae and pupae appear highly vulnerable to natural enemy action, with the ground-foraging predator community mainly composed of ants (80.37 %) and ground beetles (9.17 %). Our findings should help develop integrated pest management (IPM) tactics for SP crops.
Starting Page	437
Ending Page	447
Page Count	11
File Format	PDF
ISSN	16124758
Journal	Journal of Pest Science
Volume Number	86
Issue Number	3
e-ISSN	16124766
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-03-12
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biological control Tephritoidea Tropical fruits Small-scale agriculture Lance flies Entomology Agriculture Plant Pathology Ecology Forestry Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Plant Science Ecology, Evolution, Behavior and Systematics Insect Science Agronomy and Crop Science

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