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Evidence for both humoral and neural regulation of sex pheromone biosynthesis in Spodoptera littoralis
Author(s) -
Marco M.Pilar,
Fabriàs Gemma,
Lázaro Germán,
Camps Francisco
Publication year - 1996
Publication title -
archives of insect biochemistry and physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.576
H-Index - 66
eISSN - 1520-6327
pISSN - 0739-4462
DOI - 10.1002/(sici)1520-6327(1996)31:2<157::aid-arch4>3.0.co;2-x
Subject(s) - hemolymph , biology , spodoptera littoralis , pheromone , sex pheromone , context (archaeology) , medicine , bioassay , ventral nerve cord , endocrinology , anatomy , central nervous system , biochemistry , botany , noctuidae , larva , ecology , paleontology
Selected tissues presumably involved in the control of sex pheromone production were analyzed by ELISA for the presence of PBAN‐like immunoreactivity (PBAN‐IR) in Spodoptera littoralis . The temporal distribution pattern of PBAN‐IR in the hemolymph is similar to that of pheromone production in the gland. On the other hand, analysis of the retrocerebral complex, brain‐subesophageal ganglion complex, and terminal abdominal ganglion (TAG) revealed similar PBAN‐IR levels in both photophase and scotophase periods. Pheromonotropic activity exhibited by both hemolymph and TAG, as determined by a modified in vitro bioassay, agrees with the results of the immunochemical analyses. Severing the ventral nerve cord anterior to the TAG impaired normal sex pheromone production by second‐scotophase females. These results are discussed in the context of how sex pheromone biosynthesis is regulated by PBAN in S. littoralis . © 1996 Wiley‐Liss, Inc.