INIBIOMA   20415
INSTITUTO DE INVESTIGACIONES EN BIODIVERSIDAD Y MEDIOAMBIENTE
Unidad Ejecutora - UE
artículos
Título:
Diversidad de Araneae en cultivos de Citrus sinensis de la Provincia de Corrientes (Argentina).
Autor/es:
CAVA, MARÍA BELÉN; CORRONCA, J. A.; ECHEVERRÍA ALEJANDRO
Revista:
REVISTA DE BIOLOGíA TROPICAL
Editorial:
REVISTA DE BIOLOGIA TROPICAL
Referencias:
Lugar: Turrialba; Año: 2012
ISSN:
0034-7744
Resumen:
Spider diversity in cultures of Citrus sinensis in province of Corrientes, Argentina. We studied the spider community associated with cultures of Citrus sinensis in the province of Corrientes, Argentina, in two plots (AM1 irrigated and AM2 unirrigated) of 0.82 hectares each. Spiders were collected monthly by using pitfall traps, hand capture, agitation of foliage and sieving soil litter. A total of 7174 specimens were collected (33 families, 37 genera and 163 species/ morphospecies). The AM1 recorded 3811 individuals (33 families, 179 species/ morphospecies) and AM2 3363 individuals (31 families, 174 species/ morphospecies). In November, December and January had the highest abundance for both plots. 70% of spiders collected were juveniles. Eigth families were the most abundant and represent 75% of spiders collected in both plots, the largest being Lycosidae. We identified eight guilds in both plots, the ground runners were the most abundant (AM1 n= 1341, s= 39, n= 999 AM2, s= 33) followed by orb weavers (AM1 n= 637, s= 36; AM2 n= 552, s= 33), the stalkers (AM1 n= 471, s= 43, AM2 n= 453, s= 47) and the space web-builders (AM1 n= 446, s= 23; AM2 n= 342, s= 25). The analysis of alpha diversity in both plots (AM1H´= 4.161, J= 0.802; AM2 H´= 4.184, J= 0.811) showed no significant differences (t= 1.083 p= 0.279).The linear dependences model was fit best the results, where the species observed were more than estimated. Clench model estimated 90.9% of the spiders observed in the unit with irrigation and 90.6% in the unit without irrigation.