Transmission of different nucleopolyhedroviruses by two ectoparasitoids: Bracon hebetor say (Hymenoptera: Braconidae) and Euplectrus plathypenae (Howard) (Hymenoptera: eulophidae)

Biological, nutritional, and histochemical basis for improving an artificial diet for Bracon hebetor Say (Hymenoptera: Braconidae).

The biology of Bracon hebetor Say (Hymenoptera: Braconidae) reared on fifth instars of Anagasta kuehniella (Zeller) (Lepidoptera: Pyralidae) (natural diet) and in vitro (artificial diet) was evaluated. Data on the number of instars, development time and food intake were collected, and histochemical tests were conducted to detect proteins and lipids in the parasitoid's digestive tract. The data ...

Response of Natural and Factitious Hosts to the Ectoparasite Euplectrus plathypenae (Hymenoptera: Eulophidae)

Linkage analysis of sex determination in Bracon sp. near hebetor (Hymenoptera: Braconidae).

To test whether sex determination in the parasitic wasp Bracon sp. near hebetor (Hymenoptera: Braconidae) is based upon a single locus or multiple loci, a linkage map was constructed using random amplified polymorphic DNA (RAPD) markers. The map includes 71 RAPD markers and one phenotypic marker, blonde. Sex was scored in a manner consistent with segregation of a single "sex locus" under comple...

اثر سم Bacillus thuringiensis Berliner روی برخی ویژگی‌های زیستی زنبور پارازیتوئید Habrobracon hebetor (Say) (Hymenoptera: Braconidae)

چکیده به منظور بررسی طول عمر، ترجیح میزبانی، طول دوره­ی مراحل زیستی و تعداد نتاج تولیدی زنبور Habrobracon hebetor روی لارو میزبان Ephestia kuehniella تیمار شده با دزهای کشنده و زیر کشنده باکتری Bt آزمایشی در قالب طرح کاملا تصادفی در شرایط آزمایشگاه اجرا شد. نتایج نشان داد تعداد تخم زنبور از 9/3 عدد در تیمار شاهد به 4/1 و 7/2 عدد به ترتیب در دزهای کشنده و زیر کشنده کاهش یافت. با کاهش تعداد نتاج ...

Effect of host density on egg dispersion and the sex ratio of progeny of Bracon hebetor (Hymenoptera: Braconidae)

Egg dispersion and the sex ratio of progeny were studied in relation to the host density of the parasitoid, Bracon hebetor Say, infesting larvae of Plodia interpunctella (H . ubner). Females appeared to allocate eggs in relation to host density to avoid laying more eggs than could complete development on a host. The dispersion pattern of the parasitoid ovipositions among hosts was influenced by...