INVESTIGADORES
RUBIO Alejandra
artículos
Título:
Macro and micro-environmental factors affecting tire-breeding flies (Insecta: Diptera) in urbanised areas
Autor/es:
RUBIO A; BELLOCQ M. I.; VEZZANI D
Revista:
ECOLOGICAL ENTOMOLOGY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2013 vol. 38 p. 303 - 314
ISSN:
0307-6946
Resumen:
1. Urbanisation is often considered a main driver of changes in the
structure of insect communities. To assess macro- and microenvironmental factors
determining the occurrence and community structure of fly larvae in water-filled
artificial containers, a total of 13 848 individuals were collected among 1380 waterfilled
tyres inspected along an urbanisation gradient in temperate Argentina.
2. According to the best generalized linear mixed model obtained for fly occurrence,
the probability of finding an occupied tyre was greater in large tyres with high
water volume, containing organic matter and located in shaded conditions under high
vegetation cover in backyards. Regarding macroenvironmental factors, fly occurrence
decreased as the urbanisation level increased.
3. The anova revealed a negative effect of urbanisation on all variables used to
characterize the fly community structure. The number of occupied tyres, the relative
abundance of individuals, the species richness, and the Shannon diversity index
showed consistent patterns with significantly lower values at high urbanisation level.
4. Community composition also varied along the urbanisation gradient, revealing
three major groups of fly species: those found exclusively in highly urbanised areas,
those found in the less urbanised sites, and those collected across the entire gradient.
anova revealed a negative effect of urbanisation on all variables used to
characterize the fly community structure. The number of occupied tyres, the relative
abundance of individuals, the species richness, and the Shannon diversity index
showed consistent patterns with significantly lower values at high urbanisation level.
4. Community composition also varied along the urbanisation gradient, revealing
three major groups of fly species: those found exclusively in highly urbanised areas,
those found in the less urbanised sites, and those collected across the entire gradient.