Organic-Based Attractant For The Control Of Fruit Flies (Diptera: Tephritidae)Infesting Ampalaya (Momordicacharantial.)
Roberto B. Barba Jr., Ruben P. Tablizo
Keywords: Diptera, tephritidae, bio-efficacy, coco-based attractants, Bactrocera, BactroceracucurbitaeCoq., BactroceradorsalisHendel, Bactrocera tau Walker, coconut toddy
ABSTRACT: One of the major constraints in obtaining good quality fruits and better harvest in bittergourd production is the infestation caused by fruit flies (Diptera: Tephritidae) known to inflict damages in cucurbits, thus, rendering the crop unfit for human consumption. Field experiment on the bio-efficacy of different coco-based organic attractants was carried out to determine the behavioural preferences of fruit flies among food sources designed in a trap-and-killed approach. As revealed by the body coloration and distinct marking patterns on the dorsal (i.e. back) part of the thorax and the forewings (i.e. presence of infuscation); three (3) discrete species were identified under genus Bactrocera, including melon fruitfly (BactroceracucurbitaeCoq.) which was predominant than the oriental fruitfly (BactroceradorsalisHendel) and Bactrocera tau Walker observed in the study site. The cocosugar solution (1:1v/v) exhibited a significant fruitfly population count, number of species attracted and is generally preferred by both female and male fruitfly but relatively selective to non-target organisms. The bio-efficacy of the cocosugar solution was observed until 2-3 weeks compared to the other coco-based attractants and the control treatment (i.e. plain water). More female fruitflies were observed than male across cocobased attractants. Behavioural preference of the female fruitflies is outright directed to a sucrose-enriched diet (i.e. cocosugar; 1:1v/v) but sustained preference over the cocobased treatments might be implicated to a coconut toddy as a natural complete food affecting behavioural choices of fruitfly among food sources. However, the use of cocosugar solution obtained 30% better harvests than plain coconut toddy. Similarly, the marketable yield is enhanced up to two-fold relative to the control treatment. Yield reduction due to fruitfly infestation had reached 42% when no control measures were employed, of which only 26.18% and 50% of the totallosses (i.e. relative to without control measures) due to incurred damage are accounted by cocosugar and plain coconut toddy, respectively. Hence, infusion of sugar into the treatment has rendered the solution to twice as effective as plain coconut toddy in abating fruitfly infestation. Results were discussed in reference to its significance of obtaining a simple, low-cost yet effective organic-based control of tephritid fruit flies.
. Allwood, A. J., A. Chinajariyawong, R. A. I. Drew, E. L. Hamacek,D. L. Hancock, C. Hangsawad, J. C. Jipanin, M. Jirasurat, C.Kong Krong, S. Kritsaneepaiboon, C. T. S. Leong & S. Vijaysegaran, 1999. Host Plants for fruit flies (Diptera;Tephritidae) in South East Asia. Raffles Bulletin of ZoologySupplement No. 7: 1-92.
. Dhillon MK, Singh R, Naresh JS and Sharma HC. 2005. The melon fruit fly, Bactroceracucurbitae: A review of its biology and management. 16pp. Journal of Insect Science 5:40, available online: insectscience.org/5.40
. Gupta JN, Verma AN. 1978. Screening of different cucurbit crops for the attack of the melon fruit fly, DacuscucurbitaeCoq. (Diptera: Tephritidae). Haryana Journal of HorticultureScience 7: 78-82
. Kushwaha KS, Pareek BL, Noor A. 1973.Fruit fly damage in cucurbits at Udaipur.Udaipur University Research Journal 11: 22-23.
. Lall BS, Sinha SN. 1959. On the biology of the melon fly, Dacuscucurbitae(Coq.) (Diptera: Tephritidae). Science & Culture 25: 159-161.
. Mote UN. 1975. Control of fruit fly (Dacuscucurbitae) on bitter gourd and cucumber. Pesticides 9: 36-37.
. Narayanan ES, Batra HN. 1960. Fruit Flies and Their Control. Indian Council of Agricultural Research, New Delhi, India, 1-68 pp.
. Prabhakar, C. S.,,PankajSood and P. K. Mehta. 2012. Pictorial keys for predominant Bactroceraand Dacusfruit flies (Diptera:Tephritidae) of north western Himalaya. Arthropods 1(3):101-111
. Rabindranath K, Pillai KS. 1986. Control of fruit fly of bitter gourd using synthetic pyrethroids. Entomon 11: 269-272.
. Singaravadivel K, Alagusundaram K, HariharanB (2012) Physicochemical Properties of Fresh and Stored Coconut Palm Toddy. 1:397.doi:10.4172/scientificreports.397
. Srinivasan PM. 1959. Guard your bitter gourd against the fruitfly. Indian Farming 9: 8.
. BPI- Production guide:Ampalaya (MomordicacharantiaL.)http://bpi.da.gov.ph/guide_ampalaya.php