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Polyandrous behavior in Cerconota anonella Sepp (Lepidoptera: Oecophoridae) Neotropical Entomology
Fonseca,Marcy G.; Sousa-Souto,Leandro; Lima,Eraldo R..
Among insects polyandrous behavior is common and plays an important role in female reproductive output. The present study aimed to evaluate the mating frequency of the moth Cerconota anonella Sepp under laboratory conditions and to verify if polyandrous behavior is common in this species. Approximately 47% of females mated more than once. However they presented differences in the mating period (early or late). In general, precocious females were more frequent than late females (P < 0.001, Binomial test). Such results suggest that polyandry in C. anonella may be common in the field.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Spermatophore; Annona muricata; Mating frequency; Reproductive success.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000200021
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Características químicas do lixo de formigueiros de Atta sexdens rubropilosa (Hymenoptera: Formicidae) mantidos com diferentes substratos Rev. Bras. Ciênc. Solo
Guerra,Marcelo Braga Bueno; Schaefer,Carlos Ernesto G.R.; Sousa-Souto,Leandro.
As saúvas (Atta spp.) estão amplamente distribuídas pelo continente Sul-Americano e são consideradas importantes componentes do ecossistema neotropical. Diversos estudos têm demonstrado o efeito de formigueiros no enriquecimento do solo e na facilitação ao estabelecimento de espécies vegetais. Possivelmente o enriquecimento do solo seja devido ao acúmulo de matéria orgânica decomposta em câmaras de descarte (lixo) no interior das colônias. Entretanto, pouco se sabe sobre a composição química do lixo de formigas cortadeiras. O objetivo do presente trabalho foi comparar os teores de nutrientes do lixo produzido por colônias de Atta sexdens rubropilosa Forel (Hymenoptera: Formicidae), em laboratório, mantidas com folhas de duas espécies de plantas. Os...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ciclagem de nutrientes; Saúvas; Fertilidade do solo; Matéria orgânica.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832007000500033
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Fluctuating asymmetry of and herbivory on Poincianella pyramidalis (Tul.) L.P. Queiroz (Fabaceae) in pasture and secondary tropical dry forest Acta Botanica
Ribeiro,Viviane Andrade; Silva,Rosineide Nascimento da; Sousa-Souto,Leandro; Neves,Frederico de Siqueira.
Plants subjected to stressful environments tend to be more asymmetric with reduced defenses and are therefore more vulnerable to herbivory. This study investigates the relationship between herbivory and fluctuating asymmetry (FA) in Poincianella pyramidalis in two contrasting habitat types in the Brazilian caatinga (shrublands). We tested the following hypotheses: that FA occurs in P. pyramidalis; that FA of P. pyramidalis leaves is greater in individuals located in pasture than in those located in secondary tropical dry forest; that herbivory by insects (leaf chewers and leaf miners) increases in parallel with increases in the level of FA; and that herbivory is more common in pasture than in secondary tropical dry forest. In each of the two environments,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caatinga; Forest regeneration; Leaf miners; Plant-insect interactions; Tropical dry forests.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100003
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Sperm depletion: a cost for single mated females of Podisus nigrispinus (Dallas, 1851) (Heteroptera: Pentatomidae) BABT
Sousa-Souto,Leandro; Evangelista Júnior,Walter Santos; Lima,Eraldo Rodrigues; Zanuncio,José Cola; Fonseca,Marcy das Graças.
The aim of this work was to test if egg viability of polyandrous females was increased with increasing number of matings. Longevity and reproductive output of females of the predatory stinkbug Podisus nigrispinus that were allowed to mate for 0, 1, 2, 3 times or were in the continuous presence of the same male was evaluated. Polyandry resulted in diminished sperm depletion. Females that had mated three times or that were in continuous presence of a male produced more offspring than females that mated once or twice throughout their lifetime. There was a negative correlation of mating history on female longevity. Results indicated that remating, either with same male or with different males were crucial for maximization of the reproductive success of females.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asopinae; Multiple matings; Reproductive success; Biological control; Mate choice.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000700009
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