摘要:

Adults ofLygus hesperusKnight andL. elisusVan Duzee were mass collected from alfalfa hay fields. These insects were divided into 2 groups, each marked with a different fluorescent dust and released in adjacent cotton and alfalfa fields, respectively. Subsequent monitoring showed a rapid movement of theLygusfrom cotton to alfalfa, but the reverse was not true. This further verified thatLygusprefer alfalfa over cotton.

ISSN:0046-225X    

DOI:10.1093/ee/4.1.163

出版商:Oxford University Press    

年代:1975

数据来源: OUP

摘要:

The effectiveness of codling moth,Laspeyresia ponmnella(L.), control by the sterile-insect release method depends on the frequency of effective matings between the released sterile males and the wild females (Proverbs 1971). The higher the frequency of this mating, relative to the matings between the wild males and wild females, the more sterility is introduced into the wild population; this applies irrespective of whether only sterile males or sterile males and females are used for release.

ISSN:0046-225X    

DOI:10.1093/ee/4.1.166

出版商:Oxford University Press    

年代:1975

数据来源: OUP

摘要:

The sex pheromone of the Indian meal moth,Plodia interpunctella(Hübner), was isolated from females and identified as (Z,E)-9,12-tetradecadien-1-ol acetate (ZETA) by Kuwahara et al. (1971) and Brady et al. (1971). Later, Sower et al. (1974) showed that the females also released (Z,E)-9,12-tetradecadien-1-ol (ZETOH). The ZETOH per se is not a sex attractant, but it does appear to have some role in the sexual communication of Indian meal moths (Sower et al. 1974). We report here an investigation of the rates of release of ZETA and ZETOH by calling Indian meal moth females. Calling is defined as the dorsal projection of the females abdomen tip accompanied by eversion of the 8th and 9th abdominal segments and the concomitant release of sex pheromone.

ISSN:0046-225X    

DOI:10.1093/ee/4.1.168

出版商:Oxford University Press    

年代:1975

数据来源: OUP

摘要:

McKinney (1944), Oatman (1966), and Brubaker (1968) reported that a tachinid,Voria ruralis(Fallen), was the most prevalent parasite recovered from larvae of the cabbage looper,Trichoplusia ni(Hübner), on commercially grown vegetables. Therefore, the potential ofV. ruralisas a biological control agent in an integrated control program is currently being evaluated at the Vegetable Insects Laboratory at Mesa, Ariz.

ISSN:0046-225X    

DOI:10.1093/ee/4.1.169

出版商:Oxford University Press    

年代:1975

数据来源: OUP