COMPARISON OF DEVELOPMENT TIME AND REPRODUCTION OF TYPICAL AND MELANIC EURYGASTER INTEGRICEPS (HETEROPTERA: SCUTELLERIDAE) UNDER LABORATORY CONDITIONS

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MOHAGHEGH NEYSHABOURI J.

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Journal: Journal of Entomological Society of Iran Year:2008 | Volume:27 | Issue:2 (40 SUPPLEMENT) Page(s): 109-126

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Title

COMPARISON OF DEVELOPMENT TIME AND REPRODUCTION OF TYPICAL AND MELANIC EURYGASTER INTEGRICEPS (HETEROPTERA: SCUTELLERIDAE) UNDER LABORATORY CONDITIONS

Author(s)

MOHAGHEGH NEYSHABOURI J. | Issue Writer Certificate

Keywords

BIOLOGYQ3

DEMOGRAPHYQ3

MELANISMQ3

SUNN PESTQ3

HETEROPTERAQ3

EURYGASTER INTEGRICEPSQ2

Abstract

Among the SUNN PEST populations, melanic phenotype of EURYGASTER INTEGRICEPS Puton is a distinct colour morph. A set of experiments were performed to examine possible differences between typical and melanic phenotypes of E. integriceps using overwintered adults collected from Gharah-Aghaj mountains (southeast of Tehran). Melanics consisted only 0.3% of the total population. The laboratory conditions were: T=24±1 oC, RH=60-70% and L: D=16: 8 h. Incubation period and five nymphal instars were 7.24±0.01, 4.14±0.02, 7.97±0.04, 6.63±0.04, 7.21±0.04 and 11.32±0.07 days in melanics, and 7.19±0.01, 4.14±0.01, 7.83±0.03, 6.19±0.02, 6.88±0.03 and 10.63±0.04 days in typicals, respectively. Melanics with 44.13±0.15 days had a longer developmental time than typicals with 42.33±0.10 days. This difference was mainly related to the feeding instars. Durations of pre-oviposition period, oviposition period and post-oviposition period in both groups were not significantly different: 10.3±0.8 days, 34.1±6.4 days and 5.9±1.9 days for melanics, and 10.2±0.8 days, 34.9±6.4 days and 4.0±1.4 days for typicals, respectively. In general, reproductive table parameters showed an inferior performance of melanics compared to the typicals. There was no clear relationship between female body weight and total number of eggs in both groups. Stable population parameters (mean±SE) of doubling time, Dt (days), mean generation time, T (days), net reproductive rate, Ro (female eggs/female), intrinsic rate of increase, rm (1/time) and finite rate of increase, l (per day), were 13.68±0.68, 60.69±1.71, 20.67±4.09, 0.0502±0.0025 and 1.0515±0.0026 in melanics, respectively. The respective values for typicals were 12.79±0.50, 62.60±2.13, 29.11±5.26, 0.0541±0.0021 and 1.0556±0.0022. None of these parameters were significantly different between two groups. Relatively inferior characteristics of melanics observed in this study need further experiments on their successive generations to elucidate reproductive performances of the group.

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APA: Copy

MOHAGHEGH NEYSHABOURI, J.. (2008). COMPARISON OF DEVELOPMENT TIME AND REPRODUCTION OF TYPICAL AND MELANIC EURYGASTER INTEGRICEPS (HETEROPTERA: SCUTELLERIDAE) UNDER LABORATORY CONDITIONS. JOURNAL OF ENTOMOLOGICAL SOCIETY OF IRAN (JESI), 27(2 (40 SUPPLEMENT)), 109-126. SID. https://sid.ir/paper/48014/en

Vancouver: Copy

MOHAGHEGH NEYSHABOURI J.. COMPARISON OF DEVELOPMENT TIME AND REPRODUCTION OF TYPICAL AND MELANIC EURYGASTER INTEGRICEPS (HETEROPTERA: SCUTELLERIDAE) UNDER LABORATORY CONDITIONS. JOURNAL OF ENTOMOLOGICAL SOCIETY OF IRAN (JESI)[Internet]. 2008;27(2 (40 SUPPLEMENT)):109-126. Available from: https://sid.ir/paper/48014/en

IEEE: Copy

J. MOHAGHEGH NEYSHABOURI, “COMPARISON OF DEVELOPMENT TIME AND REPRODUCTION OF TYPICAL AND MELANIC EURYGASTER INTEGRICEPS (HETEROPTERA: SCUTELLERIDAE) UNDER LABORATORY CONDITIONS,” JOURNAL OF ENTOMOLOGICAL SOCIETY OF IRAN (JESI), vol. 27, no. 2 (40 SUPPLEMENT), pp. 109–126, 2008, [Online]. Available: https://sid.ir/paper/48014/en

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