Detail of "56683-54-6"

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Field evaluation and stability studies of the synthetic pheromone of the diamondback moth, Plutella xylostella

Field evaluation and stability studies of the synthetic pheromone of the diamondback moth, Plutella xylostella. Lin, Y. M.; Chow, Y. S. (Inst. Zool., Acad. Sin., Taipei, Taiwan). Chung Yang Yen Chiu Yuan Chih Wu Yen Chiu So Chuan K'an, 5(Proc.There are some reagents with their cas registry numbers 128-37-0 and 53939-28-9 are used in this study. Semin. Allelochem. Pheromones, 1982), 147-55 (English) 1983. CODEN: CYCKDV. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) The optimal dose of the sex pheromone of the diamondback moth in the field trapping was 50-100 mg of a 5:5:0.1 mixt. of (Z)-11-hexadecenal [53939-28-9], (Z)-11-hexadecenyl acetate [34010-21-4], and (Z)-11-hexadecen-1-ol [56683-54-6] dispensed in polyethylene (PE) caps or PE microtubes. Under ordinary conditions, the synthetic pheromone was attractive to males only ~10 days. However, when BHT [128-37-0] was added to the pheromone mixt., the longevity of the attractant bait was extended to 5 wk. The mechanism of this prolongation of the bait was elucidated by showing that (Z)-11-hexadecenal gave (Z)-11-hexadecenoic acid and hydroperoxides by illumination in sunlight or irradn. with a 300-W lamp. This photooxidn. of the sex pheromone could be inhibited by adding BHT. Another component of the sex pheromone of the diamondback moth, (Z)-11-hexadecenyl acetate, was stable to photooxidn. under the same conditions. .

Ecological approach to male diamondback moth response to sex pheromone

Ecological approach to male diamondback moth response to sex pheromone. Maa, C. J. William (Inst. Zool., Acad. Sin., Taipei 11529, Taiwan). Diamondback Moth Manage., Proc. Int. Workshop, 1st, Meeting Date 1985, 109-23. Edited by: Talekar, N. S.; Griggs, T. D. Asian Veg. Res. Dev. Cent.: Shanhua, Taiwan. (English) 1986. CODEN: 55GYAW. DOCUMENT TYPE: Conference CA Section: 5 (Agrochemical Bioregulators) Natural populations of diamondback moth (Plutella xylostella) were collected from 5 different vegetable fields and the response of males to a synthetic female sex pheromone was monitored using a Y-test in the lab. throughout the year. Mass trapping of adult males using 5 blends of the pheromone was also conducted in the field. The antennal esterase [9013-79-0] activity of diamondback moth was monitored by the use of either 1-naphthylacetate or 14C (Z)-11-hexadecenyl acetate as substrates. In addn., zymograms of antennal esterase were studied by polyacrylamide gel electrophoresis. Fifth-instar larvae of the moth were monitored for malathion [121-75-5] resistance. Variations in the pheromone response of adult males to a mixt. of (Z)-11-hexadecenal (Ald) [53939-28-9], (Z)-11-hexadecenyl acetate (OAc) [34010-21-4], and (Z)-11-hexadecen-1-ol (OH) [56683-54-6], were age-dependent. Assays of antennal esterase activity were pos. correlated with the behavior of the male moth. Antennal esterase zymograms revealed 10 bands, each with different characteristics. The pheromone hydrolytic activity of antennal esterase of male adults had a high titer which was coincident with a high rate of malathion degrdn. activity in the larval stage of the moth. However, this is not related with a strong pheromone response by male adults. Two cycles of male response alternated during the year. Relative humidity was possibly the major factor affecting the male response to the pheromone blends. Temp. may play only a minor role in the response in tropical Taiwan. 53939-28-9 and 9013-79-0 are just another two chemicals used in this study. A pheromone blend of 3:7:0.1 (Ald:OAc:OH) [71615-26-4] was recommended for use in male trapping in subtropical areas. .