Loading...
Please wait, while we are loading the content...
Similar Documents
Preference of Hyposoter didymator ( Thunberg ) ( Hymenoptera : Ichneumonidae ) on the Larval Stages of Helicoverpa armigera ( Hübner ) ( Lepidoptera : Noctuidae )
| Content Provider | Semantic Scholar |
|---|---|
| Author | Şimşek, Murat Kondur, Yalçın |
| Copyright Year | 2018 |
| Abstract | The young instars (1-3 rd instars) of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) were used in order to determine parasitization preference of the parasitoid Hyposoter didymator (Thun.) (Hymenoptera: Ichneumonidae) which may develop inside H. armigera. One of 1 st , 2 nd and 3 rd instar larvae and an experienced H. didymator female were inserted into a petri dish and then observed for parasitization. The parasitized larva that H. didymator inserted her ovipositor was immediately removed from the petri dish and another group of 1 st , 2 nd and 3 rd instar larvae were inserted into the petri dish. This procedure was continued until 20 host larvae were parasitized. Parasitized larvae were inserted into transparent 100 ml cylinders with artificial insect diet. All cylinders were stored in the growth chamber at 25±1°C temperature and 65%±5 humidity. The parasitized larvae were dissected at Ringer’s solution under a stereomicroscope and the eggs of parasitoid were searched since the parasitoid eggs could easily be seen after 24 hours later than the parasitization. After dissection, the larvae with parasitoid egg were accepted as preferred by the parasitoid and the parasitization ratios (%) for 1 st , 2 nd and 3 rd instar H. armigera larvae by H. didymator were calculated. Results show that the host instar preferences of H. didymator females were significantly different (F(2,24)=38,055; P<0,05) and the most preferred H. armigera instar was the 3 rd instar (52%), then the 2 nd instar (32%). The least preferred H. armigera instar was the 1 st instar (16%). We believe that these results may be useful in H. didymator breeding programs. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://dergipark.gov.tr/download/article-file/519678 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
