Aspectos da biologia de Euplusia violacea (Blanchard) (Hymenoptera, Apidae, Euglossini)

Abstract

ABSTRACT. ASPECTS DF BIDLOGV DF EUPLUSIA VIOUCEA (BLANCHARO) (HVMENDPTE. RA, klDAÉ, EUGWSSINI). Nests of orchid bee Euplusia violacea (Blanchard, 1840) col\eted''íó trap-nests and in lhe wood of a construction in Viçosa, Minas Gerais (20"45'30"S, 42°52'05"W), Brazil, were studied under laboratory condictions. Some aspects of lhe biology of lhese bees were observed, such as sex-ratio, development time, longevity and olhers. Some aspects of lhe bebavior of E. violacia were also studied. KEY WORDS. Apoidea, Euglossini, Eup/usia vio/acea, euglossine nest, behavior A despeito do grande interesse despertado pelas abelhas da tribo Euglossini, poucos dados a respeito da biologia desses insetos são conhecidos. Uma revisão sobre o assunto é feita por ZUCCHI et aI. (1969).A maioria dos trabalhos realizados limitam-se ao levantamento de espécies com auxílio de iscas odoríficas que permitem coletar machos

Abelhas Euglossina (Hymenoptera, Apidae) coletadas em uma monocultura de eucalipto circundada por Cerrado em Urbano Santos, Maranhão, Brasil

“…Duas hipóteses são sugeridas para o fato de alguns compostos considerados bons atrativos não atraírem Euglossina em determinados locais: (1) estes compostos aromáticos não estariam presentes em nenhum recurso natural utilizado pelos machos para obtenção de fragância, não sendo assim reconhecidos (PERUQUETTI & CAMPOS, 1997;PERUQUETTI, 1998); ou (2) estes compostos estariam ausentes nos materiais utilizados pelas fêmeas para a construção do ninho (PERUQUETTI et al, 1999).…”

Eufriesea violacea (Blanchard) (Hymenoptera: Apidae): an orchid Bee apparently sensitive to size reduction in forest patches

“…Considered an endemic species to the Atlantic Forest (Nemésio & Silveira 2007b), the occurrence of E. violacea has been documented mainly to the southern and southeastern regions of Brazil (Peruquetti & Campos 1997, Rebêlo & Garófalo 1991, Sofi a & Suzuki 2004, Wittmann et al 1989. While females of E. violacea exhibit solitary nesting behaviour and nest in natural and man-made cavities, frequently constructing nests in aggregations (Peruquetti & Campos 1997), males are usually attracted to scent-baits of eucalyptol, vanillin and others chemicals during the wetwarm season (Wittmann et al 1989, Sofi a & Suzuki 2004, Uehara & Garófalo 2006. This species has one generation per year (Wittmann et al 1989), with males usually emerging in September and females after October (Peruquetti & Campos 1997).…”

“…While females of E. violacea exhibit solitary nesting behaviour and nest in natural and man-made cavities, frequently constructing nests in aggregations (Peruquetti & Campos 1997), males are usually attracted to scent-baits of eucalyptol, vanillin and others chemicals during the wetwarm season (Wittmann et al 1989, Sofi a & Suzuki 2004, Uehara & Garófalo 2006. This species has one generation per year (Wittmann et al 1989), with males usually emerging in September and females after October (Peruquetti & Campos 1997). Like other Eufriesea species, E. violacea spend most of the annual cycle as diapausing prepupae (Dressler 1982, Kimsey 1982, Uehara-Prado & Garófalo 2006.…”

Genetic structure analysis of Eufriesea violacea (Hymenoptera, Apidae) populations from southern Brazilian Atlantic rainforest remnants

“…Since E. violacea is a very seasonal euglossine species with just one generation per year (Wittmann et al, 1989;Peruquetti and Campos, 1997) it is possible that the three populations of E. violacea studied have maintained themselves genetically similar to native populations originally present in the tropical rainforest before fragmentation took place, this conjecture being reinforced by the fact that the genetic distance lowest value occurred between bees from the GF and SF fragments (Table 1).…”

“…A number of studies carried out in remnants of Atlantic rainforest in southeastern Brazil have revealed variation in the frequencies of males belonging to the euglossine bee species Eufriesea violacea (Blanchard) (Rebêlo and Garófalo, 1991;Garófalo et al, 1998;Jesus and Garófalo, 2000), a very seasonal species of bees mainly found in south and southeastern Brazilian Atlantic rainforest (Wittmann et al, 1989;Rebêlo and Garófalo, 1991;Peruquetti and Campos, 1997). Sofia and Suzuki (2004) have reported that a reduction in fragment size negatively affected the frequency of E. violacea males.…”