摘要:

Ponderosa pine log sections, infested with 25 maleIps piniSay or uninfested, were tested for attractiveness in spring and summer with and without ipsenol.Ips piniwere caught abundantly only on traps containing male infested logs. Ipsenol eluted at ca. 2 mg/day was more effective in reducing catch than were 2 lesser rates. Seventeen species of bark beetles and 4 species of predacious beetles were tallied on traps. Beetles other thanI. pinithat were attracted in significantly greater numbers to one or more treatment were the scolytidsOrthotomicus caelatus(Eichhoff) andIps latidensLeConte; and the c1eridEnoclerus lecontei(Wolcott).

ISSN:1754-5692    

DOI:10.1093/ee/8.2.369

出版商:Oxford University Press    

年代:1979

数据来源: OUP

摘要:

Male alfalfa looper moths were attracted to lures comprising Z7-dodecenyl acetate and Z7-dodecenol. Optimum field captures occurred with acetate:alcohol ratios of ca. 10:1 and dose rates of 10 μg. The species was excluded from traps when small proportions of Z5-dodecenyl acetate, Z9-dodecenyl acetate or Z9-tetradecenyl acetate were incorporated in the lures. Analysis of female extracts and electroantennogram measurements suggested that the major attractant found is a natural pheromone component in this species.

ISSN:1754-5692    

DOI:10.1093/ee/8.2.373

出版商:Oxford University Press    

年代:1979

数据来源: OUP

摘要:

Field surveys in Arkansas soybean fields, 1974–76, indicated thatApanteles marginiventris(Cresson) is the most abundant parasite of green cloverworm larval populations andRogas nolophanaeAshmead is a parasite of secondary importance. Research from other soybean areas in the U.S. report these 2 parasites in reverse order of abundance. It is possible thatA. marginiventrishas an advantage overR. nolophanaein Arkansas since both species attack the same larval stages of the host.A. marginiventrisappears to be a very effective parasite of the green cloverworm in Arkansas.

ISSN:1754-5692    

DOI:10.1093/ee/8.2.376

出版商:Oxford University Press    

年代:1979

数据来源: OUP