ABUNDANCE OF GALL-INDUCING INSECTS IN OURATEA HEXASPERMA: RESPONSE TO VIGOR OR ESCAPE FROM HYPERSENSITIVITY?

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DE ARAUJO W.S.; RIBEIRO A.B.; DOS SANTOS B.B.

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Journal: JOURNAL OF BIODIVERSITY AND ECOLOGICAL SCIENCES (JBES) Year:2011 | Volume:1 | Issue:2 Page(s): 151-156

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Title

ABUNDANCE OF GALL-INDUCING INSECTS IN OURATEA HEXASPERMA: RESPONSE TO VIGOR OR ESCAPE FROM HYPERSENSITIVITY?

Author(s)

DE ARAUJO W.S. | RIBEIRO A.B. | DOS SANTOS B.B. | Issue Writer Certificate

Keywords

DEFENSE MECHANISM

GALLS ABUNDANCE

HYPERSENSITIVITY

PLANT VIGOR

Abstract

The PLANT VIGOR hypothesis predicts that more vigorous plants or branches are preferentially selected by female galling insects for oviposition. The HYPERSENSITIVITY reaction is a DEFENSE MECHANISM of some plants of brazilian Cerrado, where morphological and physiological changes cause the death of damaged tissue and the gall-inducing insect. We examine the abundance of Cecidomyiidae galls in Ouratea hexasperma in Caldas Novas, Brazil, aiming to answer the following questions: 1) Do galling insects prefer the more vigorous branches? 2) Is the HYPERSENSITIVITY reaction more frequent in smaller and less vigorous branches? We sampled 24 individuals from the host plant and collected five branches of each, and measured the length of the branch, the number of leaves, the total number of galls and number of galls with HYPERSENSITIVITY reaction. Linear regression analysis showed a positive relationship of abundance of galls with the plants vigor and the number of leaves per branch being the most important variable. The number of galls with a HYPERSENSITIVITY was influenced both by the length of the module as the number of leaves per branch. As expected, smaller and less vigorous branches had more of a HYPERSENSITIVITY reaction. Generally, these areas have high concentrations of tannins and phenolic compounds to protect them against attack from herbivores. Is expected to short and young branches have more HYPERSENSITIVITY reactions of the larger branches.Thus, the preference of galling by more vigorous branches could be a leak from a HYPERSENSITIVITY reaction and not simply a response to the vigor.

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APA: Copy

DE ARAUJO, W.S., RIBEIRO, A.B., & DOS SANTOS, B.B.. (2011). ABUNDANCE OF GALL-INDUCING INSECTS IN OURATEA HEXASPERMA: RESPONSE TO VIGOR OR ESCAPE FROM HYPERSENSITIVITY?. JOURNAL OF BIODIVERSITY AND ECOLOGICAL SCIENCES (JBES), 1(2), 151-156. SID. https://sid.ir/paper/325726/en

Vancouver: Copy

DE ARAUJO W.S., RIBEIRO A.B., DOS SANTOS B.B.. ABUNDANCE OF GALL-INDUCING INSECTS IN OURATEA HEXASPERMA: RESPONSE TO VIGOR OR ESCAPE FROM HYPERSENSITIVITY?. JOURNAL OF BIODIVERSITY AND ECOLOGICAL SCIENCES (JBES)[Internet]. 2011;1(2):151-156. Available from: https://sid.ir/paper/325726/en

IEEE: Copy

W.S. DE ARAUJO, A.B. RIBEIRO, and B.B. DOS SANTOS, “ABUNDANCE OF GALL-INDUCING INSECTS IN OURATEA HEXASPERMA: RESPONSE TO VIGOR OR ESCAPE FROM HYPERSENSITIVITY?,” JOURNAL OF BIODIVERSITY AND ECOLOGICAL SCIENCES (JBES), vol. 1, no. 2, pp. 151–156, 2011, [Online]. Available: https://sid.ir/paper/325726/en

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