Identification and electroantennographic activity of sex-specific geranyl esters in an abdominal gland of femaleAgriotes obscurus (L.) andA. lineatus (L.) (Coleoptera, Elateridae)

Abstract

Experientia 44 (1988), BirkhS.user Verlag, CH-4010 Basel/Switzerland 531 the manner of infection of Bufo tadpoles with N. carpoeapsae, it is probably similar to the results presented here, with death resulting from bacteria that entered the host's coelom through penetration holes made by the nematodes. These nematodes are not being used or recommended to control aquatic insects at this time; however, if they are so in the future, then their effect on young tadpoles should be taken into consideration. Summary. Both geranyl hexanoate and geranyl octanoate were identified by GC/MS as the major volatiles in a hitherto uncharacterized abdominal gland in females in Agriotes obscurus. Only geranyl octanoate was found in A. lineatus. In EAG tests performed on A. obscurus males, geranyl butanoate and geranyl hexanoate elicited the strongest antennal responses.

Agriotes proximus and A. lineatus (Coleoptera: Elateridae): a comparative study on the pheromone composition and cytochrome c oxidase subunit I gene sequence

“…The abdominal tips of 5 A. proximus females containing the pheromone glands (Borg-Karlson et al 1988;Merivee and Erm 1993) were removed and extracted in pentane for 15 min. Two extracts were prepared, the final volume of each was 25 ll.…”

“…Pheromone gland extracts of A. lineatus contain large amounts of geranyl octanoate (Borg-Karlson et al 1988;Kudryavtsev et al 1993;Siirde et al 1993) and only trace amounts of the related geranyl butanoate (Yatsynin et al 1996a;Tóth et al 2003). A blend of 10:1 geranyl octanoate/ geranyl butanoate was found to be effective in field trapping of A. lineatus in many European countries (Tóth et al 2003).…”

The biology and management of wireworms (Agriotes spp.) on potato with particular reference to the U.K.

“…In Europe, pheromones from A. ustulatus, A. lineatus and A. obscurus (Yatsynin & Lebedeva, 1984;Borg-Karlson et al, 1988) have been identi®ed, raising the possibility of the development of pheromone traps for click beetle adults. Recent European work has concentrated on developing speci®c pheromones for monitoring Agriotes species (Furlan et al, , 1997Toth et al, 1998).…”

Geranyl hexanoate attracting male click beetles Agriotes rufipalpis Brullé and Agriotes sordidus Illiger (Col., Elateridae)

“…By monitoring the occurrence of click beetle adults it may be possible to forecast the occurrence of wireworms and thus to determine the necessity of insecticide applications on a given field, resulting in reduced use of soil insecticide. Pheromone trapping would be an applicable method of monitoring, since females of adult click beetles emit long‐range sex pheromones, and for several pest species the chemical identity of the pheromone has been elucidated (B org ‐K arlson et al., 1988; S iirde et al., 1993; Y atsynin et al., 1996). Until now field trapping tests with synthetic pheromones have been largely conducted on click beetle populations in the European part of the former Soviet Union (Y atsynin and L ebedeva , 1984; Y atsynin et al., 1986; K udryavtsev et al., 1993).…”