How to translate text using browser tools
17 February 2017 Trap Height Affects Capture of Lady Beetles (Coleoptera: Coccinellidae) in Pecan Orchards
T. E. Cottrell
Author Affiliations +
Abstract

There is scarce information regarding the vertical stratification of predaceous Coccinellidae in tall trees. Although numerous studies have been done in orchards and forests, very few studies have assessed the occurrence of predaceous Coccinellidae high in tree canopies. The objective of this study was to examine the abundance of Coccinellidae at different heights in mature pecan, Carya illinoinensis (Wangenh.) K. Koch, orchards with tall trees. From spring through late fall during 2013 and 2014, yellow pyramidal Tedders traps were suspended in the pecan canopy at 6.1 and 12.2 m, in addition to being placed on the ground (0 m). The exotic species Harmonia axyridis and Coccinella septempunctata accounted for a high percentage of trap capture during this study. Except for Olla v-nigrum, low numbers of native species (Hippodamia convergens, Coleomegilla maculata, Cycloneda munda, Scymnus spp., and Hyperaspis spp.) were captured. However, significantly more were captured in ground traps rather than in canopy traps with the exception of O. v-nigrum. Similar to most native species, significantly more C. septempunctata were captured in ground traps than canopy traps. This contrasts sharply with H. axyridis captured similarly at all trap heights. The ability to exploit resources across vertical strata, unlike many intraguild predators, may be an underestimated factor helping to explain the invasiveness of H. axyridis.

Published by Oxford University Press on behalf of Entomological Society of America 2017. This work is written by a US Government employee and is in the public domain in the US.
T. E. Cottrell "Trap Height Affects Capture of Lady Beetles (Coleoptera: Coccinellidae) in Pecan Orchards," Environmental Entomology 46(2), 343-352, (17 February 2017). https://doi.org/10.1093/ee/nvw176
Received: 23 September 2016; Accepted: 20 December 2016; Published: 17 February 2017
JOURNAL ARTICLE
10 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

KEYWORDS
Coccinella septempunctata
flight activity
Harmonia axyridis
invasive
Olla v-nigrum
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top