caa a22 4500 388035935 CHVBK 20180307125004.0 cr unu---uuuuu 161130e199806 xx s 000 0 eng 10.1017/S0007485300025852 doi S0007485300025852 pii (NATIONALLICENCE)cambridge-10.1017/S0007485300025852 The influence of the juvenile hormone analogue (S)-hydroprene on Aprostocetus hagenowii (Hymenoptera: Eulophidae), an oothecal parasitoid of the oriental cockroach Blatta orientalis (Dictyoptera: Blattidae) [Elektronische Daten] The synthetic juvenile hormone analogue (S)-hydroprene can control populations of the oriental cockroach Blatta orientalis Linnaeus. Eradication of B. orientalis infestations, however, can take in excess of two years. In an attempt to reduce the time (S)-hydroprene takes to eliminate a population of oriental cockroaches, we explored the possibility of using the oothecal endoparasitoid Aprostocetus hagenowii Ratzeburg in combination with (S)-hydroprene. For such a strategy to be successful, it is important that the parasitoid remains substantially unaffected by (S)-hydroprene. When A. hagenowii was exposed to B. orientalis oothecae in the presence of (S)-hydroprene, female parasitoids showed no reduction in their capacity to attack hosts and their fecundity was not compromised. (S)-hydroprene, at dose rates of 18 mg/m2 and 100 mg/m2, induced deformity in approximately 12% and 33% respectively of parasitoids that emerged. No reduction in reproductive viability was seen in morphologically normal F1 parasitoids. Deformed F1 parasitoids, exposed to the higher (S)-hydroprene dose, showed a 71% reduction in the number of oothecae attacked and a 50% reduction in the number of offspring produced. These results indicate that A. hagenowii could be used in combination with (S)-hydroprene in an integrated pest management programme against B. orientalis. Copyright © Cambridge University Press 1998 Bell H.A. Central Science Laboratory, Ministry of Agriculture, Fisheries and Food, Sand Hutton, York, Yorkshire, Y04 1LZ, UK Marris G.C. Central Science Laboratory, Ministry of Agriculture, Fisheries and Food, Sand Hutton, York, Yorkshire, Y04 1LZ, UK Edwards J.P. Central Science Laboratory, Ministry of Agriculture, Fisheries and Food, Sand Hutton, York, Yorkshire, Y04 1LZ, UK Bulletin of Entomological Research Cambridge University Press 88/3(1998-06), 231-238 0007-4853 88:3<231 1998 88 BER https://doi.org/10.1017/S0007485300025852 text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0007485300025852 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bell H.A. Central Science Laboratory, Ministry of Agriculture, Fisheries and Food, Sand Hutton, York, Yorkshire, Y04 1LZ, UK NATIONALLICENCE 700 1- Marris G.C. Central Science Laboratory, Ministry of Agriculture, Fisheries and Food, Sand Hutton, York, Yorkshire, Y04 1LZ, UK NATIONALLICENCE 700 1- Edwards J.P. Central Science Laboratory, Ministry of Agriculture, Fisheries and Food, Sand Hutton, York, Yorkshire, Y04 1LZ, UK NATIONALLICENCE 773 0- Bulletin of Entomological Research Cambridge University Press 88/3(1998-06), 231-238 0007-4853 88:3<231 1998 88 BER CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge