Özet:

This study was addressed in the years 2014-2016 to determine some biological characteristics in nature of the Yonca hortum insect, Hypera postica (Gyllenhal, 1813) (Coleoptera, Curculionidae), which caused significant economic damage to the Yonca district. The period of H. postica is continued periodically for the purpose of monitoring the eggs, larva, puppies and adolescent periods and the behavior of coupling, writing and swallowing between February and July 3-5 days, one between July and February 7-14 days. The results of the studies have found that women left eggs in the lap in November, spent the winter both eggs and eggs in the adolescent period, and from mid-February, when the average temperature was above 9 °C, the adolescents migrated back into the field and coupled and began to leave eggs. In the same time, larva output was found from the eggs left in autumn at the beginning of March. The average temperature is 16.5 °C in mid-April, they entered the pupa period, and in the first week of May, the new generation of adults began to be seen. The larva output from the eggs left in the spring continued until mid-April, the first form was made in the junk at the beginning of June, and the larva, pupa and the new generation of puppies were found in the field until the last week of June. The average temperature was ≥28 °C in July-August, where adults were found to be drawn under dry plant residues in the shadow areas on the edge of the field and at a depth of 5-10 cm of the soil, and the drawn lasted until mid-September. Adults have been shown to be active in February-June and November periods, in June-October and in December-March winter periods. It is known that the insect gives one generation per year in the condition of the tumor.

Anahtar Kelimeler:

Özet:

This study was conducted in Aralik district of Igdir province between 2014 and 2016 years to investigate some biological aspects of alfalfa weevil Hypera postica (Gyllenhal, 1813) (Coleoptera: Curculionidae) causing economic damages in alfalfa fields. Egg, larvae, pupae, maturation, mating, estivation and overwintering stages of H. postica were observed periodically every 3-5 days during February-July, every 7-14 days during July-February. It was found that females insert eggs in alfalfa stems in October and spend winter both as egg and adult; beginning from mid-February, when temperature is above 9 °C, adults migrate to the field, mate and start to lay eggs. It was noted that eggs laid in autumn started to hatch and larvae emerged in early March. Pupae stage started in mid-April, when average temperature was 16.5 °C, and new generation adults started to appear first week of May. Eggs laid in spring hatched and larvae emerged until mid-April. First cut of alfalfa was seen in early June. Larvae, pupae and new generation adults were observed in the field until last week of June. Adults spent an inactive summer, during July-August when average temperature was ≥28 °C, in shady areas under sere plants, in 5-10 cm soil depth of field edges. Estivation period continued until mid-September. Adults were active between February-June and in November. Estivation was recorded between June-October. Adults overwintered between December-March. It was found that the weevil produce one generation in a year under Igdir conditions.