INNERVATION AND NEURAL REGULATION OF THE SEX-PHEROMONE GLAND IN FEMALE HELIOTHIS MOTHS

被引:98
作者
CHRISTENSEN, TA
ITAGAKI, H
TEAL, PEA
JASENSKY, RD
TUMLINSON, JH
HILDEBRAND, JG
机构
[1] UNIV ARIZONA,CTR INSECT SCI,TUCSON,AZ 85721
[2] USDA ARS,INSECT ATTRACTANTS BEHAV & BASIC BIOL RES LAB,GAINESVILLE,FL 32604
[3] UNIV ARIZONA,DIV BIOTECHNOL,ARIZONA RES LAB,TUCSON,AZ 85721
关键词
ELECTROPHYSIOLOGY; OCTOPAMINE; PHEROMONE BIOSYNTHESIS ACTIVATING NEUROPEPTIDE; VENTRAL NERVE CORD; TERMINAL ABDOMINAL GANGLION;
D O I
10.1073/pnas.88.11.4971
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Female Heliothis moths normally produce their species-specific male attractant (sex pheromone blend) during scotophase, and this production is stimulated by pheromone biosynthesis activating neuropeptide (PBAN), presumably carried in the hemolymph. Several lines of evidence indicate that the central nervous system plays another critical role in this regulation. Pheromone biosynthesis was induced during photophase by electrical stimulation of the ventral nerve cord or the peripheral nerves projecting from the terminal abdominal ganglion to the pheromone gland in the tip of the abdomen. Electron microscopy further revealed that axonal branches innervate the gland tissue. Nerve branches associated with pheromone gland cells are enwrapped in glia and contain dense-core vesicles, suggesting that the innervation of the gland might be neurosecretory. Finally, the biogenic monoamine octopamine was nearly as effective as purified Heliothis zea PBAN in stimulating pheromone biosynthesis when injected into intact females during mid-photophase. Furthermore, both octopamine and PBAN stimulated significant increases in the pheromone content of the glands in isolated abdomens lacking a ventral nerve cord but only when abdomens were treated at the onset of scotophase. These data suggest that the regulation of sex pheromone production in Heliothis is more complex than previously thought. Activation of the gland appears to be governed by both neural and hormonal mechanisms, and these control mechanisms depend on photoperiodic cues.
引用
收藏
页码:4971 / 4975
页数:5
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