STUDY ON DEVELOPMENTAL THRESHOLD AND THERMAL CONSTANT OF ANTHOCORIS NEMORALIS FABRICIUS, A PREDATOR OF PEAR PSYLLA

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EMAMI M.S.; TAHERI M.

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Journal: IRANIAN JOURNAL OF BIOLOGY Year:2013 | Volume:25 | Issue:4 Page(s): 509-516

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Title

STUDY ON DEVELOPMENTAL THRESHOLD AND THERMAL CONSTANT OF ANTHOCORIS NEMORALIS FABRICIUS, A PREDATOR OF PEAR PSYLLA

Author(s)

EMAMI M.S. | TAHERI M. | Issue Writer Certificate

Keywords

MINUTE PIRATE BUGQ2

PEARQ2

THERMAL CONSTANTQ2

ANTHOCORIS NEMORALISQ2

PSYLLA PYRICOLAQ2

Abstract

The adults and nymphs of ANTHOCORIS NEMORALIS are efficient predators of eggs and nymphs of PEAR psylla, PSYLLA PYRICOLA in PEAR orchards. The effect of temperature on different developmental stages of A. nemoralis was investigated under controlled conditions (65±5% RH, 16L: 8D).A. nemoralis were fed by eggs and nymphs of PEAR psylla. The developmental threshold and THERMAL CONSTANT required for each stage and for egg-adult period were determined. The mean developmental time for egg to adult was 28.8, 19, 14 and 10.9 days for 20, 25, 30 and 35±1 oC, respectively. Comparing developmental period of different stages showed that the fifth instar nymph with 28.23% and egg with 20.97%, had the greatest proportion of the total generation period Developmental threshold calculated from 8.04 (for fifth nymphal instar) to 13.89 (for egg stage). Lower developmental threshold and mean THERMAL CONSTANT for egg to adult were 11.8 oC and 259.92 degree-days, respectively.

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APA: Copy

EMAMI, M.S., & TAHERI, M.. (2013). STUDY ON DEVELOPMENTAL THRESHOLD AND THERMAL CONSTANT OF ANTHOCORIS NEMORALIS FABRICIUS, A PREDATOR OF PEAR PSYLLA. IRANIAN JOURNAL OF BIOLOGY, 25(4), 509-516. SID. https://sid.ir/paper/21373/en

Vancouver: Copy

EMAMI M.S., TAHERI M.. STUDY ON DEVELOPMENTAL THRESHOLD AND THERMAL CONSTANT OF ANTHOCORIS NEMORALIS FABRICIUS, A PREDATOR OF PEAR PSYLLA. IRANIAN JOURNAL OF BIOLOGY[Internet]. 2013;25(4):509-516. Available from: https://sid.ir/paper/21373/en

IEEE: Copy

M.S. EMAMI, and M. TAHERI, “STUDY ON DEVELOPMENTAL THRESHOLD AND THERMAL CONSTANT OF ANTHOCORIS NEMORALIS FABRICIUS, A PREDATOR OF PEAR PSYLLA,” IRANIAN JOURNAL OF BIOLOGY, vol. 25, no. 4, pp. 509–516, 2013, [Online]. Available: https://sid.ir/paper/21373/en

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