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| Nagamoto,Nilson Satoru; Barbieri,Rafael Forti; Forti,Luiz Carlos; Cardoso,Sandra Regina de Sousa; Moreira,Sinara Maria; Lopes,Juliane Floriano Santos. |
| Leaves of copperleaf (Acalypha spp.) are greatly accepted by leaf-cutting ants and therefore used to maintain colonies in the laboratory. In order to determine the attractive potential of granulated bait of Acalypha wilkesiana leaves versus citrus pulp, currently used in commercial baits, an evaluation was performed, by using the leaf-cutting ant Atta sexdens rubropilosa as model. The handmade non-toxic baits contained powder (90% w/w) of either citrus pulp or A. wilkesiana were offered simultaneously in the foraging arena until the total loading of one of them. Results showed that copperleaf baits are less attractive than the citrus ones, which invalidates the viability of the substitution. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Toxic bait; Acalypha wilkesiana; Euphorbiaceae; Formicidae; Leaf-cutting ant. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000600002 |
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| Nickele,Mariane A; Oliveira,Edilson B de; Reis Filho,Wilson; Iede,Edson T; Ribeiro,Rodrigo D. |
| The spatial distribution of insects is essential to perform control strategies, to improve sample techniques and to estimate economic losses. We aimed to determine the spatial distribution of nests of Acromyrmex crassispinus (Forel) in Pinus taeda plantations. The experiments were carried out in P. taeda plantations with different ages (treatments: recently-planted, three and six-year old plants). The study took place in Rio Negrinho and in Três Barras, SC. Three plots of one hectare were delimited in each treatment, and plots were divided in 64 sample units. The analysis of the dispersion index [variance/mean relationship (I), index of Morisita (Iδ) and k exponent of negative binomial distribution] showed that the majority of the samplings presented... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf-cutting ant; Pinus pest; Poisson distribution; Reforestation. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600003 |
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| Corrêa,Michele M.; Bieber,Ana G.D.; Wirth,Rainer; Leal,Inara R.. |
| Atta cephalotes (L.) presents a wide distribution in the Neotropical region. In Brazil, this species is disjunctly distributed in the Amazon region and in the states of Maranhão, Pernambuco and southern Bahia, all of which belong to Northeast Region. Here we report on a survey of Atta colonies in 42 remnants of the Atlantic rainforest in Alagoas and Pernambuco. Our results include new records of A. cephalotes in the state of Alagoas and thereby extend the known distribution area of its southern populations in Northeast Brazil. In addition, the species was strongly associated with well-conserved forest remnants, indicating that it is highly sensitive to disturbance. We suggest that, in the fragmented scenario of the northeastern Atlantic forest, A.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian Atlantic Forest; Disjunct distribution; Leaf-cutting ant; New record; Species replacement; Disturbance sensitive taxon. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000400023 |
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