SPATIAL DISTRIBUTION PATTERN OF PEA APHID, ACYRTHOSIPHONPISUM AND PREDATORY LADYBIRDS COCCINELLASEPTEMPUNCTATA AND HIPPODAMIAVARIEGATA IN ALFALFA FIELDS OF HAMEDAN

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SOLEIMANI SAFURA; MADADI HOSSEIN

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Journal: BIOLOGICAL CONTROL OF PESTS AND PLANT DISEASES Year:2014 | Volume:2 | Issue:2 Page(s): 139-148

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Title

SPATIAL DISTRIBUTION PATTERN OF PEA APHID, ACYRTHOSIPHONPISUM AND PREDATORY LADYBIRDS COCCINELLASEPTEMPUNCTATA AND HIPPODAMIAVARIEGATA IN ALFALFA FIELDS OF HAMEDAN

Author(s)

SOLEIMANI SAFURA | MADADI HOSSEIN | Issue Writer Certificate

Keywords

IWAO'S PATCHINESS REGRESSION MODELQ2

SPATIALDISPERSIONQ1

TAYLOR'S POWER LAWQ2

Abstract

The distribution pattern of pest population is one of the factors not only effects on sampling program and data analysis method, but also can be used to measure the density of pests and their natural enemies. Thus, the spatial distribution pattern of the pea aphid, Acyrthosiphonpisum Harris (Hem.: Aphididae) and its two major predators, HippodamiavariegataGoeze (Col.: Coccinellidae) and Coccinellaseptempunctata (Linnaeus, 1758) (Col.: Coccinellidae) was inv estigated by different dispersion indices through 2012 and 2013 growing season s. Dispersion pattern was determined by using TAYLOR'S POWER LAW, Iwao's patchiness regression method and variance to mean ration test. Obtained results showed an aggregated distribution pattern of pea a phid and lady beetles. Based on R2 and p-value of regression analysis, IWAO'S PATCHINESS REGRESSION MODEL provided a slightly more adequate description of variance/mean relationships than TAYLOR'S POWER LAW. Among the species studied, the pea aphid adults and H. variegatashowed the highest and C. septempunctata showed the smallest coefficients of TAYLOR'S POWER LAW respectively. These results provide a reliable basis to develop efficient sampling plans for estimating aphid and their natural enemies populations.

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APA: Copy

SOLEIMANI, SAFURA, & MADADI, HOSSEIN. (2014). SPATIAL DISTRIBUTION PATTERN OF PEA APHID, ACYRTHOSIPHONPISUM AND PREDATORY LADYBIRDS COCCINELLASEPTEMPUNCTATA AND HIPPODAMIAVARIEGATA IN ALFALFA FIELDS OF HAMEDAN. BIOLOGICAL CONTROL OF PESTS AND PLANT DISEASES, 2(2), 139-148. SID. https://sid.ir/paper/261436/en

Vancouver: Copy

SOLEIMANI SAFURA, MADADI HOSSEIN. SPATIAL DISTRIBUTION PATTERN OF PEA APHID, ACYRTHOSIPHONPISUM AND PREDATORY LADYBIRDS COCCINELLASEPTEMPUNCTATA AND HIPPODAMIAVARIEGATA IN ALFALFA FIELDS OF HAMEDAN. BIOLOGICAL CONTROL OF PESTS AND PLANT DISEASES[Internet]. 2014;2(2):139-148. Available from: https://sid.ir/paper/261436/en

IEEE: Copy

SAFURA SOLEIMANI, and HOSSEIN MADADI, “SPATIAL DISTRIBUTION PATTERN OF PEA APHID, ACYRTHOSIPHONPISUM AND PREDATORY LADYBIRDS COCCINELLASEPTEMPUNCTATA AND HIPPODAMIAVARIEGATA IN ALFALFA FIELDS OF HAMEDAN,” BIOLOGICAL CONTROL OF PESTS AND PLANT DISEASES, vol. 2, no. 2, pp. 139–148, 2014, [Online]. Available: https://sid.ir/paper/261436/en

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