Spider assemblages associated with different crop stages of irrigated rice agroecosystems from eastern Uruguay

By

Bao, Leticia
Ginella, Juaquín
Cadenazzi, Mónica
Castiglioni, Enrique
Martínez, Sebastián
Casales, Luis
Caraballo, María
Laborda, Álvaro
Simó, Miguel

Type

Article

Date of Publication

2018-05-03

Original Publication

Biodiversity data journal

Volume

6

Pages

1--17

Subjects

agroecology , Araneae , diversity , guilds composition , rice crop

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia Pensoft Publishers [2013]-

Identifiers

DOI: https://doi.org/10.3897/BDJ.6.e24974
eLocator: e24974

 

Abstract

The rice crop and associated ecosystems constitute a rich mosaic of habitats that preserve a rich biological diversity. Spiders are an abundant and successful group of natural predators that are considered efficient in the biocontrol of the major insect pests in agroecosystems. Spider diversity in different stages of the rice crop growth from eastern Uruguay was analysed. Field study was developed on six rice farms with rotation system with pasture, installed during intercropping stage as cover crop. Six rice crops distributed in three locations were sampled with pitfall and entomological vaccum suction machine. Sixteen families, representing six guilds, were collected. Lycosidae, Linyphiidae, Anyphaenidae and Tetragnathidae were the most abundant families (26%, 25%, 20% and 12%, respectively) and comprised more than 80% of total abundance. Other hunters (29%), sheet web weavers (25%) and ground hunters (24%) were the most abundant guilds. Species composition along different crop stages was significantly different according to the ANOSIM test. The results showed higher spider abundance and diversity along the crop and intercrop stages. This study represents the first contribution to the knowledge of spider diversity associated with rice agroecosystem in the country.