Padrões ecológicos da comunidade de ácaros em euforbiáceas de um fragmento de mata estacional semidecidual, no Estado de São Paulo

Abstract

The diversity and seasonality of mite community on three indigenous euphorbiaceous plants from a Semidecidual forest remnant were studied by means of monthly samplings performed from May 2003 to April 2004. Diversity, dominance and equitability indexes were applied in order to verify community ecological patterns, and the Pearson correlation coefficient was used to relate mite abundance with the rainfall. About 11,515 mites belonging to 111 species of 73 genera in 25 families were recorded. Among these species, 44% of them were generalists, while 21 and 35% are phytophagous and predatory, respectively. The phytophagous mites were the most abundant, performing 45.7% of mites collected, followed by the predatory and generalist species, which represented 40.5 and 13.7% of material sampled, respectively. The Phytoseiidae family showed the highest species richness (23), followed by Tarsonemidae (18) and Tydeidae (16). The three euphorbiaceous plants studied showed great species diversity, as the results of indexes were higher than 50% of theoretical maximum diversity. The species-abundance patterns determined for mite community was equally represented by geometric and log series models. Out of three plant species studied, only Acalypha diversifolia showed potential usage in Integrated Pest Management programs.Keywords: Acari, diversity, Euphorbiaceae, integrated pest management, seasonality.

Mites (Arachnida, Acari) on Astronium fraxinifolium Schott (Anacardiaceae) from the Cerrado remnants associated with nickel mining areas

“…Furthermore, the probability of sampling new mite species according to sample effort increase could be low for both SR and PR remnants. These curve patterns differ from other studies performed in natural vegetation remnants (Feres et al 2007 andProctor 1998) where the authors did not find asymptote for accumulation species curve, suggesting high probability of natural vegetation in harboring higher mite diversity. However, both PR and SR Cerrado remnants receive similar and frequent impact from nickel mining activities given their proximity to the mining enterprise.…”

Diversidade de ácaros (Arachnida: Acari) em Hymenaea martiana (Leguminosae) em gradiente de tamanho de plantas

“…Estudos neste sentido foram realizados por Feres et al (2007) e Daud & Feres (2005) que avaliaram a diversidade e ocorrência sazonal da comunidade de ácaros associada a plantas de fragmentos de Mata Estacional Semidecidua no estado de São Paulo.…”

Ácaros predadores da família Phytoseiidae (Acari: Mesostigmata) para o controle do biótipo B da mosca-branca Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) no Brasil

“…Os resultados sugerem que as populações brasileiras de A. herbicolus, A. tamatavensis e N. tunus são candidatos promissores, devendo ser avaliados em relação a detalhes não levados em conta no presente trabalho, visando seu uso prático real. Predadores avaliados neste estudo são comumente encontrados em vários estados brasileiros e em muitas espécies de plantas em ambientes naturais e em agroecossistemas (FERLA;MORAES, 1998;MORAES, 2001;CASTRO, 2004;FERES et al, 2005FERES et al, , 2007FURTADO et al, 2005FURTADO et al, , 2006VASCONCELOS et al, 2006;LAWSON-BALAGBO et al, 2008;GONDIM Jr. et al, 2012;FERES, 2011, DEMITE et al, 2014CASTRO, 2013). Também são encontrados em outros países tropicais e subtropicais (DEMITE et al, 2014).…”