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Damage to grape flowers and berries by L obesia botrana larvae ( D enis & S chiffernüller) (Lepidoptera: Tortricidae), and relation to larval age
Author(s) -
Delbac L.,
Thiéry D.
Publication year - 2016
Publication title -
australian journal of grape and wine research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.65
H-Index - 77
eISSN - 1755-0238
pISSN - 1322-7130
DOI - 10.1111/ajgw.12204
Subject(s) - tortricidae , pest analysis , instar , larva , biology , lepidoptera genitalia , vineyard , integrated pest management , crop , horticulture , inflorescence , population , toxicology , botany , agronomy , demography , sociology
Background and Aims Evaluation of pest damage and the population age of the pest are key factors in integrated pest management. Gaining such knowledge, however, can be time consuming and difficult in larvae that have cryptic habits, such as the European grapevine moth ( EGVM , L obesia botrana ). An alternative is to measure the damage caused by different larval instars. Damage caused by different EGVM larval instars was described over 3 consecutive years. Methods and Results The first two larval generations of wild EGVM were sampled in an experimental vineyard in the B ordeaux area, F rance; 1945 samples of larval damage to inflorescences were collected and instars determined. Significant correlations were described between both in each generation. Conclusions Quantification of plant damage monitoring has potential to assist with assessing the characteristics of EGVM populations. Significance of the Study Using crop injury or damage to determine larval stage should provide a rapid and convenient method for pest management.