A comparative study of sex pheromone reception in the Hadeninae (Lepidoptera: Noctuidae)

Abstract

A comparative study of the olfactory responses to pheromone compounds was performed in twenty‐four species of Hadeninae. Electroantennograms (EAG) were recorded on male moths in response to thirty compounds and the response profiles of each species were analysed by factorial correspondence analysis. A limited number of molecules were found active and the most effective stimuli were Z9 tetradecenes and Z11 hexadecenes. The species of the Mythimna genus were most sensitive to aldehydes. Tholera decimalis did not respond to any of the molecules tested. The species belonging to the Mamestra and the Orthosia genera responded to a variety of molecules and no simple correlation was found between the genus and the EAG sensibility. Pheromone reception is discussed in relation to the taxonomy and the evolution of olfactory communication in Hadeninae.

Chemotaxis of Tuta absoluta to tomato plants exposed to methyl jasmonate and conspecific injuries

“…Indeed, the sex pheromone of T. absoluta comprises mostly two unsaturated linear ester chains formed by 16 carbons (Attygalle et al., 1996; Svatoš et al., 1996), and tomato plants exposed to the herbivory of T. absoluta emit at least 22 compounds of this same chemical group (ester) (Silva et al., 2017). Furthermore, during feeding, larvae of phytophagous insects can deposit products secreted by mandibular glands on plants (Bergström et al., 1985; Descoins et al., 1984), which are the same as those found in sex pheromones already observed for several lepidopterans (Dore & Renou, 1985; Renou et al., 1991). Such facts may corroborate the results obtained in this study, especially in the interaction between tomato and T. absoluta , which would explain the positive responses of males to plants injured by herbivory, while females showed no distinction in recognition.…”

Optimization of male sex attractants for Orthosis cruda Schiff., O. Munda Schiff. and O. stabilis Schiff. (Lep., Noctuidae)

“…There filter paper sources, approximately 16 times more Z9-14Ac than Z l l -l b A c will be released (BENGTSSON et al 1900). Z9-l4Ac has recently been reported to be highly active in EAG tests on 0. cruda also by RENOU et al (1991).…”

“…Connection between the electrodes and the insect tissues was maintained by an electrically conducting gel (Valleylab, Boulder, CO, USA). Responses were amplified by a high impedance amplifier (RUMBO 1981), and displayed on an OH 850 chart recorder (Radelkis, Budapest, Hungary). Acetate, alcohol and aldehyde series with 10, 12, 14 and 16 carbon atoms in the chain, and with a (2) unsaturation at positions 5, 7, 9 or 11, were screened on the male antenna.…”

The genome sequence of the Feathered Gothic, Tholera decimalis (Poda, 1761)

“…Males have very pronounced bipectinate (feathered) antennae; this feature, not seen in females, is likely an adaptation to accommodate increased numbers of olfactory receptors for pheromone detection. Further research is needed into the chemical biology of this species, particularly as electroantennogram recording showed no response to 30 putative pheromone components that elicit responses in related species ( Renou et al , 1991 ).…”