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
ISSN da Revista
Título de Volume
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.