Symbiotic interactions between microorganisms and social insects have been described as crucial for the maintenance of these multitrophic systems, observed stingless bee Scaptotrigona depilis yeast Zygosaccharomyces sp. SDBC30G1. The larvae S. ingest fungal filaments SDBC30G1 to obtain ergosterol, which is precursor biosynthesis ecdysteroids that modulate insect metamorphosis. In this work, we ...

Partamona seridoensis is an endemic stingless bee from the Caatinga, a Neotropical dry forest in northeastern Brazil. Like other stingless bees, this species plays an important ecological role as a pollinator. The aim of the present study was to investigate the genetic structure and evolutionary history of P. seridoensis across its current geographic range. Workers from 84 nests from 17 localit...

The pollination effectiveness of the stingless bee Melipona quadrifasciata and the honey bee Apis mellifera was tested in tomato plots. The experiment was conducted in four greenhouses as well as in an external open plot in Ribeirão Preto, SP, Brazil. The tomato plants were exposed to visits by M. quadrifasciata in one greenhouse and to A. mellifera in another; two greenhouses were maintained w...

Cytogenetic analyses of the stingless bee Partamona helleri collected in the state of Bahia, Northeast Brazil revealed the chromosome numbers n = 18 in the haploid males and 2n = 35 in the diploid females. All karyotypes displayed one large acrocentric B chromosome, which differs from the minute B chromosomes previously described in the populations from southeastern Brazil. Giemsa staining, C-b...

The South America encompasses the highest levels of biodiversity found anywhere in the world and its rich biota is distributed among many different biogeographical regions. However, many regions of South America are still poorly studied, including its xeric environments, such as the threatened Caatinga and Cerrado phytogeographical domains. In particular, the effects of Quaternary climatic even...

abstract in order to identify the fruit flies of the genus tephritis laterille, 1804 (diptera: tephritidae) in ajabshir region- east azarbaijan province, a faunistic study was conducted during 2009-2010. in total, seven species were identified which all of them are as new records for the studying area and one species marked with an asterisk is being newly reported for iran insect fauna: tephrit...