Search Result of "Saen Tigvatananont"

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Economic Importance of the Fruit Fly, Dacus zonatus (Saunders) in Thailand)

ผู้เขียน:ImgSaen Tigvatananont, Imgนายสุธรรม อารีกุล, ศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

Egg, larval, pupal and adult stages of the fruit fly, Dacus zonatus (Saunders), lasted on the averages 33.13 hours, and 7.40,11.00 and 71.00 days respectively when reared on a semiartificial diet which consisted of banana pulp, corn flour, Brewer's yeast, sugar, tissue paper, sodium benzoate, hydrochloric acid, and water. They were comparatively close to the oriental fruit fly, Dacus dorsalis Hendel, which lasted on the averages 36.13 hours, and 8.20, 11.50 and 88.40 days respectively when reared on the same diet. Riped fits sampling from trees of Singapore almond (Terminalia catappa Linn.), ma-kok-nam (Elaeocapus madopetalus Pierre), guava (Psidium guajava Linn.), and rose apple (Eugenia javanica Lamk.) in Bangkok area in july, August, December, and February showed the infestation of D. zonatus in association with D. dorsalis. Th'e ratios of adult flies of D. zonatus and D. dorsalis emerged from these fruits were 1 : 1.09, 1 : 0.07,l : 2.88 and I : 1.33 respectively. With its wide range of host and distribution, D. zonatus has become one of the major economic important pests of fruits, comparable to D. dorsalis, in this country.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 018, Issue 3, Sep 84 - Dec 84, Page 180 - 185 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:การเลี้ยงแมลงวันทองในสกุลดาคัสสี่ชนิดให้ได้ปริมาณมากด้วยอาหารกึ่งเทียม

ผู้เขียน:ImgSaen Tigvatananont

สื่อสิ่งพิมพ์:pdf

Abstract

Standard diets normally used in mass rearing of Dacus dursalis Hendel and Dacus cucurbitae Conquillett contain some substances such. As wheat germ, dehydrated carrot, and butoben which are normally unavailable in the country. Attempts were made on semi-artificial diets in order to excluded those constitutes and enabled to use not only for the two species but also on the rearing of Dacus correctus (Bezzi), and Dacus tau. (Walker). It was found that the corn-banana diet which composed of corn flour, banana, brewer’s yeast, sugar, tissue paper, sodium benzoate, hydro-chloric acid, and water at the rates of 25, 25, 5, 5, 5, 0.1 gm., and 0.2, 75 ml. respectively gave no significant difference in durations of eggs, larvae, pupae, and adults when compared with the standard wheat germ and corn-flour diets in the rearings of D. dorsalis and D. correctus completion of 5 generations. The corn-banana diet gave pupal weights of the two species higher than the corn-flour diet and the highest percentage of egg hatch to D. dorsalis as compares with other two diets. The corn-wax gourd diet which composed of corn flour, wax gourd, brewer’s yeast, sugar, tissue paper, sodium benzoate, hydro-chloric acid, and water at rates of 20, 40, 5, 5, 5, 0.1 gm, and 0.2, 20 ml. respectively gave no significant difference in the durations of eggs, larvae, pupae, and adults when compared with the standard wheat germ, corn-bitter cucumber, and corn-pumpkin diets in the rearings of D. cucurbitae and D. tau after the completion of 5 generations. While there were no different in the percentages of egg hatch of the four diets, the pupal weight was higher in the corn-wax gourd diet as compared to the others. No significant difference of ovipositional rates of the three generations of D. dorsalis and D. zonatus resulted from the rearings of larvae of both species with the corn banana diet. Larvae of D. cucurbitae and D. tau when reared on the corn-wax gourd diet produced adults which gave better oviposition rates in each successive generation.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 020, Issue 1, Jan 86 - Apr 86, Page 22 - 36 |  PDF |  Page