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Title: DOSAGE EFFECTS BETWEEN DIETARY NIACIN AND OTHER B VITAMINS ON LARVAL DEVELOPMENT OF CERATITIS CAPITATA (DIPTERA: TEPHRITIDAE)

Author
item Chang, Chiou
item LI, QING - UH MANOA

Submitted to: Annals of the Entomological Society of America
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 11/17/2003
Publication Date: 6/1/2004
Citation: Chang, C.L., Li, Q. 2004. Dosage effects between dietary niacin and other b vitamins on larval development of ceratitis capitata (diptera: tephritidae). Annals of the Entomological Society of America. 97(3):536-540.

Interpretive Summary: The nutritional interaction between niacin and a nine other B vitamins group in the larval diet was evaluated. Four doses of niacin and a mixture of nine other B vitamins were cross-tested. Diets with doses > 70.7 ppm of the other B vitamins and <0.2 ppm of niacin resulted in no pupal recovery. A delayed larval duration and reduced pupal recovery resulted when no niacin and <7.07 ppm of the other B vitamins in a diet. With omission of the other B vitamins, larval duration was delayed, but was not dose dependent on niacin and pupal recovery was not affected if niacin levels were maintained at > 0.2 ppm. With 20 ppm of niacin in the diet, the larval duration and pupal recovery were dependent on the dose of the other B vitamins. The more the other B vitamins was, the shorter the larval durations and the more the pupal recoveries were. The other B vitamins reduced the larval duration when niacin was maintained at > 2 ppm. When the niacin levels decreased to < 0.2 ppm, doses of the other vitamins has to be reduced to below 7.07 ppm in order to maintain normal larval development.

Technical Abstract: The nutritional interaction between niacin and a nine other B vitamins group in the larval diet was evaluated. Four doses of niacin and a mixture of nine other B vitamins were cross-tested. Diets with doses > 70.7 ppm of the other B vitamins and <0.2 ppm of niacin resulted in no pupal recovery. A delayed larval duration and reduced pupal recovery resulted when no niacin and <7.07 ppm of the other B vitamins in a diet. With omission of the other B vitamins, larval duration was delayed, but was not dose dependent on niacin and pupal recovery was not affected if niacin levels were maintained at > 0.2 ppm. With 20 ppm of niacin in the diet, the larval duration and pupal recovery were dependent on the dose of the other B vitamins. The more the other B vitamins was, the shorter the larval durations and the more the pupal recoveries were. The other B vitamins reduced the larval duration when niacin was maintained at > 2 ppm. When the niacin levels decreased to < 0.2 ppm, doses of the other vitamins has to be reduced to below 7.07 ppm in order to maintain normal larval development.