جدول زندگی دوجنسی سن- مرحله رشدی سنک شکارگر Anthocoris minki pistaciae با تغذیه از Agonoscena pistaciae در شرایط آزمایشگاهی

Anthocoris minki pistaciae Wagner (Hemiptera: Anthocoridae) is one of the most abundant predatory bugs of Agonoscena pistaciae Burckhardt and Lauterer (Hemiptera: Psyllidae) in Iran. Therefore, in this research life table and population growth parameters of A. minki pistaciae were investigated. The experiments were conducted in controlled conditions at three temperatures (17, 26 and 30°C), relative humidity of 55±5% and a photoperiod of 16:8 h (L: D). The nymphs of A. pistaciae were supplied as prey to the predator bugs. The experiments started with 100 eggs (0-24 h old) and different age stages and mortality of developmental stage were studied daily. Female and male insects (24 h old) were selected and their daily fecundity and survival rate were recorded and the experiments were continued until death of last insect. All of the results were analyzed with age-stage, two-sex life table analysis (Ver. 2017.01.28). Based on results, there were significant differences among developmental period of A. minki pistaciae at various temperatures. The longest incubation and pre-adult period (7.1±0.13 and 24.58±0.211 days, respectively) and the highest longevity of male and female adults (61.88±0.33 and 60.36±0.36 days, respectively) were occurred at 17°C. The pre-oviposition time, oviposition period and adult insects old had significant differences at three temperatures and these items were decreased from 17°C (30.77±0.36, 24.00±0.41 and 36.47±0.16 days, respectively) to 30°C (19.10±0.27, 17.27±0.26 and 29.09±0.16 days, respectively). At 26°C, the highest intrinsic rate of increase and finite capacity of increase (0.11±0.004 and 1.11±0.004 ♀/♀/day, respectively), the greatest fecundity, the net and gross reproductive rate (51.94±1.018 eggs/female, 24.38±2.59 and 30.98±3.51 offspring/individual, respectively) and higher peaks of age-specific maternity (lxmx) with 1/33 eggs per female were observed. The highest mortality of pre-adult was happened at the lowest temperature (17°C) and it is equal to 0.28%, but the shortest mean generation time (27.37±0.32 days) and age-specific survival rate (lx) was observed at 30°C. The age-stage-specific life expectancy (exj) of A. minki pistaciae, for a newborn at 17, 26 and 30°C was calculated 46.29, 46.08 and 39.53 days. Also the results illustrated the anthocorids which were grown at temperatures of 26 and 30°C have higher age-stage-specific survival rate (sxj) than the growth at 17°C. These findings may be considered in control programs using the predator.