Next Article in Journal
Gene Disruption Technologies Have the Potential to Transform Stored Product Insect Pest Control
Next Article in Special Issue
Distribution, Pest Status and Fungal Associates of Euwallacea nr. fornicatus in Florida Avocado Groves
Previous Article in Journal
Efficacy of Controlled Atmosphere Treatments to Manage Arthropod Pests of Dry-Cured Hams
Article Menu

Export Article

Open AccessCommunication
Insects 2016, 7(3), 45; doi:10.3390/insects7030045

Impact of an Invasive Insect and Plant Defense on a Native Forest Defoliator

1
Department of Biological Sciences, University of Rhode Island, Kingston, RI 02881, USA
2
Harvard Forest, Harvard University, Petersham, MA 01366, USA
1
Phillip Alampi Beneficial Insect Laboratory, New Jersey Department of Agriculture, Division of Plant Industry, Trenton, NJ, USA
1
Department of Plant Sciences and Entomology, College of the Environment and Life Science, The University of Rhode Island, Kingston, RI, USA
1
Department of Biological Sciences, College of the Environment and Life Science, The University of Rhode Island, Kingston, RI, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Mary L. Cornelius
Received: 4 August 2016 / Revised: 4 September 2016 / Accepted: 7 September 2016 / Published: 13 September 2016
(This article belongs to the Special Issue Invasive Insect Species)
View Full-Text   |   Download PDF [871 KB, uploaded 13 September 2016]   |  

Abstract

Eastern hemlock (Tsuga canadensis [L.] Carriére) in the United States is threatened by the invasive hemlock woolly adelgid (Adelges tsugae Annand). The native hemlock looper (Lambdina fiscellaria Guenée) also appears to have played a role in previous population declines of this conifer. Although these two insects co-occur in much of the adelgid’s invaded range, their interactions remain unstudied. We assessed looper performance and preference on both uninfested and adelgid-infested foliage from adelgid-susceptible hemlocks, as well as on uninfested foliage from an eastern hemlock that is naturally adelgid-resistant. Larvae reared on uninfested foliage from adelgid-susceptible hemlocks experienced 60% mortality within the first two weeks of the experiment, and pupated at a lower weight than larvae fed adelgid-infested foliage. Despite differences in foliage source, this first look and strong pattern suggests that the hemlock looper performs better (pupates earlier, weighs more) on adelgid-infested foliage. In addition, trends suggested that larvae reared on foliage from the adelgid-resistant tree survived better, pupated earlier, and weighed more than in the other treatments. Larvae preferred adelgid-resistant over adelgid-susceptible foliage. Our results suggest that looper perform slightly better on adelgid-infested foliage and that plant resistance to xylem-feeding adelgid may increase susceptibility to foliar-feeding looper larvae. View Full-Text
Keywords: plant-herbivore interactions; herbivore-herbivore interactions; plant defense; invasive species plant-herbivore interactions; herbivore-herbivore interactions; plant defense; invasive species
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Wilson, C.M.; Vendettuoli, J.F.; Orwig, D.A.; Preisser, E.L. Impact of an Invasive Insect and Plant Defense on a Native Forest Defoliator. Insects 2016, 7, 45.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Insects EISSN 2075-4450 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top