Next Article in Journal
Do Aphids Alter Leaf Surface Temperature Patterns During Early Infestation?
Previous Article in Journal
The Six-Legged Subject: A Survey of Secondary Science Teachers’ Incorporation of Insects into U.S. Life Science Instruction
Open AccessArticle

Spider Communities and Biological Control in Native Habitats Surrounding Greenhouses

Department of Plant Protection Biology, Swedish University of Agricultural Sciences, 23053 Alnarp, Sweden
Estación Experimental Cajamar, El Ejido, 04710 Almeria, Spain
Department of Environmental Protection, Estación Experimental del Zaidín, CSIC, 18008 Granada, Spain
Department of Functional and Evolutionary Ecology, Estación Experimental de Zonas Aridas, CSIC, 04120 Almeria, Spain
IFAPA, Centro La Mojonera, 04745 Almeria, Spain
Author to whom correspondence should be addressed.
Insects 2018, 9(1), 33;
Received: 19 January 2018 / Revised: 4 March 2018 / Accepted: 10 March 2018 / Published: 14 March 2018
The promotion of native vegetation as a habitat for natural enemies, which could increase their abundance and fitness, is especially useful in highly simplified settings such as Mediterranean greenhouse landscapes. Spiders as generalist predators may also be involved in intra-guild predation. However, the niche complementarity provided by spiders as a group means that increased spider diversity may facilitate complementary control actions. In this study, the interactions between spiders, the two major horticultural pests, Bemisia tabaci and Frankliniella occidentalis, and their naturally occurring predators and parasitoids were evaluated in a mix of 21 newly planted shrubs selected for habitat management in a highly disturbed horticultural system. The effects of all factors were evaluated using redundancy analysis (RDA) and the generalized additive model (GAM) to assess the statistical significance of abundance of spiders and pests. The GAM showed that the abundance of both pests had a significant effect on hunter spider’s abundance, whereas the abundance of B. tabaci, but not F. occidentalis, affected web-weavers’ abundance. Ordination analysis showed that spider abundance closely correlated with that of B. tabaci but not with that of F. occidentalis, suggesting that complementarity occurs, and thereby probability of biocontrol, with respect to the targeted pest B. tabaci, although the temporal patterns of the spiders differed from those of F. occidentalis. Conservation strategies involving the establishment of these native plants around greenhouses could be an effective way to reduce pest populations outdoors. View Full-Text
Keywords: beneficial arthropods; GAM; habitat manipulation; RDA; tobacco whitefly; western flower thrips beneficial arthropods; GAM; habitat manipulation; RDA; tobacco whitefly; western flower thrips
Show Figures

Graphical abstract

MDPI and ACS Style

Cotes, B.; González, M.; Benítez, E.; De Mas, E.; Clemente-Orta, G.; Campos, M.; Rodríguez, E. Spider Communities and Biological Control in Native Habitats Surrounding Greenhouses. Insects 2018, 9, 33.

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.

Article Access Map by Country/Region

Back to TopTop