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Evaluation of Traps Used to Monitor Southern Pine Beetle Aerial Populations and Sex Ratios by James T. Cronin; Jane. L. Hayes; Peter Turchin is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Summary 1 Various kinds of traps have been employed to monitor and forecast population trends of the southern pine beetle (__Dendroctonus frontalis__ Zimmermann; Coleoptera: Scolytidae), but their accuracy in assessing pine‐beetle abundance and sex ratio in the field has not been evaluated directly. 2 In this study, we used fluorescent powder to mark pine beetles emerging from six isolated infestations. We then compared estimates of total abundances and proportions of males emerging from within each infestation to the estimates from three types of traps: passive sticky traps (2, 5, 10 and 20 m away from the source of beetles), multi‐funnel traps baited with pine beetle attractants (100 m away) and pine trees baited with attractants (also 100 m away). 3 We found that the proportion of males captured in traps was significantly affected by the type of trap used. 4 Within an infestation, equal proportions of males and females were marked (0.53 ± 0.02 males; mean ± SE), but the proportions captured in trap trees and passive traps were more female biased (0.42 ± 0.03 and 0.46 ± 0.01 males, respectively). On the other hand, funnel traps provided an estimate of the proportion of males t

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Author

James T. Cronin; Jane. L. Hayes; Peter Turchin

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 1461-9555)

Published

2000

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)