EurekaMag
+ Translate
+ Most Popular
Cunninghamia lanceolata plantations in China
Mammalian lairs in paleo ecological studies and palynology
Studies on technological possibilities in utilization of anhydrous milk fat for production of recombined butter-like products
Should right-sided fibroelastomas be operated upon?
Large esophageal lipoma
Apoptosis in the mammalian thymus during normal histogenesis and under various in vitro and in vivo experimental conditions
Poissons characoides nouveaux ou non signales de l'Ilha do Bananal, Bresil
Desensitizing efficacy of Colgate Sensitive Maximum Strength and Fresh Mint Sensodyne dentifrices
Administration of fluid by subcutaneous infusion: revival of a forgotten method
Tundra mosquito control - an impossible dream?
Schizophrenia for primary care providers: how to contribute to the care of a vulnerable patient population
Geochemical pattern analysis; method of describing the Southeastern limestone regional aquifer system
Incidence of low birth weights in a hospital of Mexico City
Tabanidae
Graded management intensity of grassland systems for enhancing floristic diversity
Microbiology and biochemistry of cheese and fermented milk
The ember tetra: a new pygmy characid tetra from the Rio das Mortes, Brazil, Hyphessobrycon amandae sp. n. (Pisces, Characoidei)
Risk factors of contrast-induced nephropathy in patients after coronary artery intervention
Renovation of onsite domestic wastewater in a poorly drained soil
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Systolic blood pressure in a population of infants in the first year of life: the Brompton study
Haematological studies in rats fed with metanil yellow
Studies on pasteurellosis. I. A new species of Pasteurella encountered in chronic fowl cholera
Dormancy breaking and germination of Acacia salicina Lindl. seeds
therapy of lupus nephritis. a two-year prospective study

Effect of cocoa pod age on egg distribution and egg parasitism of the cocoa pod borer in Malaysia


Effect of cocoa pod age on egg distribution and egg parasitism of the cocoa pod borer in Malaysia



Entomologia Experimentalis Et Applicata 81(1): 81-89



ISSN/ISBN: 0013-8703

DOI: 10.1111/j.1570-7458.1996.tb02017.x

The effects of pod age on oviposition, and on egg and larval survival of the cocoa pod borer (CPB), Conopomorpha cramerella (Snellen), were investigated. CPB were allowed to oviposit on a batch of 50 pods for a period of 7 days over several exposure dates. Numbers of CPB eggs/pod and survival to larval emergence from the pods were recorded. Pods were harvested when ripe and analyzed for larval survival within the pod. The oviposition pattern varied with pod age. Older pods less than 7 weeks before ripening (WBR) were preferred, suggesting greater nutritional value or chemical attraction of the older pods. The proportion of eggs parasitized by Trichogrammatoidea bactrae fumata Nagaraja (TBF), the number of eggs lost and the proportion surviving to larval emergence from the pod were independent of pod age. Egg parasitism was low, implying that TBF was not an effective natural enemy. Mass-releases of TBF should be intensified during cropping periods with higher proportions of susceptible pods ( lt 10 WBR). Survival of larvae in the presclerotic layer (preSCL) was high and independent of pod age. Larval mortality at the SCL (sclerotic layer) was dependent on pod age and was high in older pods. Larval density influenced the survival of larvae inside the pod and was dependent on pod age. Larval mortality associated with SCL hardness and thickness is one of the criteria for the selection of CPB resistant cocoa clones.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 008526838

Download citation: RISBibTeXText

Related references

Effect of cocoa pod borer conopomorpha cramerella on cocoa yield and quality in sabah malaysia. Crop Protection 8(5): 332-339, 1989

Evaluation of attract-and-kill strategy for management of cocoa pod borer, Conopomorpha cramerella, in Malaysia cocoa plantation. International Journal of Pest Management 66(2): 155-162, 2020

Experiences in the management of cocoa pod borer Conopomorpha cramerella (Snellen) infestations in some Malaysian cocoa growers' council member estates of peninsular Malaysia. Planter 68(798): 445-455, 1992

Malaysia - cocoa-pod borer on cocoa. FAO Plant Protection Bulletin 33(1): 43, 1985

Role of pod shape, color and spatial distribution on egg distribution and egg parasitism of the cocoa pod borer, Conopomorpha cramerella (Snellen) (Lepidoptera: Gracillariidae). MARDI Research Journal 21(1): 59-70, 1993

The effect of various chocolate production techniques on cocoa components especially cocoa starch 1. chemical and physical analyses of the cocoa masses. Lebensmittel-Wissenschaft und -Technologie 17(4): 195-200, 1984

Inhibition of hamster caries by cocoa. The effect of whole and defatted cocoa, and the absence of activity in cocoa fat. Archives of Oral Biology 11(2): 149-161, 1966

A model for estimating cocoa yield loss caused by cocoa pod borer. Pelita Perkebunan 13(1): 33-39, 1997

Qualitative and multivariate analyses of clonal cocoa resistance to cocoa pod borer (Lepidoptera: Gracillariidae). Planter 71(832): 307-321, 1995

An overview on the management of key insect pests of cocoa with major emphasis on the cocoa pod borer, Conopomorpha cramerella. Planter 71(835): 469-480, 1995

Host preferences of the cocoa pod borer, Conopomorpha cramerella , the main threat to cocoa production in Southeast Asia. Entomologia Experimentalis et Applicata 168(3): 221-227, 2020

Variation of the response of clonal cocoa to attack by cocoa pod borer Conopomorpha cramerella (Lepidoptera : Gracillariidae) in Sabah. Crop Protection 25(7): 712-717, 2006

Testing local cocoa selections in three provinces in Sulawesi: (i) Productivity and resistance to cocoa pod borer and Phytophthora pod rot (black pod). Crop Protection 70: 28-39, 2015

Practical yield loss models for infestation of cocoa with cocoa pod borer moth, Conopomorpha cramerella (Snellen). Crop Protection 66: 19-28, 2014

The economic complementarity of cocoa and coconut intercropping: asset strategies of smallholders in Malaysia and implications for cocoa supply. Cocoa cycles: the economics of cocoa supply: 281-289, 1995