FIRE ANT MOUND DENSITIES IN THE UNITED-STATES AND BRAZIL (HYMENOPTERA, FORMICIDAE)

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Data

1992-08-01

Autores

Porter, S. D.
Fowler, H. G.
Mackay, W. P.

Título da Revista

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Editor

Amer Entomol Soc

Resumo

To compare fire ant populations (Solenopsis) in North and South America, we surveyed 102 preselected roadside sites, half in the southeastern United States and half in the state of Mato Grosso do Sul, Brazil. Fire ants were considerably more abundant in the United States. They occurred at more sites (100 versus 70%), in higher densities (170 versus 30 mounds/ha), in larger mounds (27.0 versus 13.8 liters), and they constituted a larger fraction of the local ant community (97 versus 13% of occupied baits). These data are consistent with the hypothesis that North American populations of S. invicta have escaped natural biological control; however, cultural and climatic factors are also likely explanations.

Descrição

Palavras-chave

INSECTA, SOLENOPSIS-INVICTA, POLYGYNY, INVASIONS

Como citar

Journal of Economic Entomology. Lanham: Entomol Soc Amer, v. 85, n. 4, p. 1155-1161, 1992.