Search Results - "Samuel Boff"

Survival rate and changes in foraging performances of solitary bees exposed to a novel insecticide by Boff, Samuel, Scheiner, Ricarda, Raizer, Josué, Lupi, Daniela

“…Solitary bees are among the most important pollinators worldwide however population declines especially in croplands has been noticed. The novel pesticide…”
Get full text

A botanic garden as a tool to combine public perception of nature and life-science investigations on native/exotic plants interactions with local pollinators by Giovanetti, Manuela, Giuliani, Claudia, Boff, Samuel, Fico, Gelsomina, Lupi, Daniela

“…Life-sciences are pointing towards an alarming worldwide pollinator decline. This decline proceeds along with overall biodiversity losses, even in the context…”
Get full text

Environmental Display Can Buffer the Effect of Pesticides on Solitary Bees by Boff, Samuel, Raizer, Josué, Lupi, Daniela

“…Environmental quality (e.g., diversity of resource availability, nesting sites, environmental display) plays an important role in an animal's life. While…”
Get full text

Decreased efficiency of pollen collection due to Sulfoxaflor exposure leads to a reduction in the size of bumble bee workers in late European summer by Boff, Samuel, Keller, Alexander, Raizer, Josué, Lupi, Daniela

“…Bumble bees ( Bombus terrestris ) are important pollinators of wild and crop plants. Despite their importance in the process of fruit and seed production on…”
Get full text

Trap-nesting Bees Communities from Protected Areas of Atlantic Forest, Southeastern Brazil by Cordeiro, Guaraci, Boff, Samuel, Alves-dos-Santos, Isabel

“…The solitary bees that use preexisting cavities can be captured in trap-nests allowing to collect data on nesting biology and associated organisms. This…”
Get full text

Bioecological and Behavioral Interaction between Pollinating Bees and the Pioneer Shrub Ludwigia nervosa in Degraded Area Suggests an Exotic Bee as Its Major Pollinator by Ferreira, Eliana Aparecida, Boff, Samuel, Verza, Sandra S, Mussury, Rosilda Mara

“…The flowers of plants of the genus are an important source of food for several species of bees. In the current study, we conducted an experiment with the aim…”
Get full text

Cavities in bromeliad stolons used as nest sites by Euglossa cordata (Hymenoptera, Euglossini) by Boff, Samuel, Alves-dos-Santos, Isabel

“…Herein, we describe nests of the orchid bee Euglossa cordata that were constructed in cavities of Aechmea distichantha (Bromeliaceae) stolons. We present data…”
Get full text

Multiple Aggressions Among Nestmates Lead to Weak Dominance Hampering Primitively Eusocial Behaviour in an Orchid Bee by BOFF, SAMUEL, Saito, Claudia Akemi, Alves-dos-Santos, Isabel

“…Reproductive conflict expressed as aggression is common in social Hymenoptera. In eusocial species, as in honeybees, several mechanisms alleviate the conflicts…”
Get full text

Mitochondrial DNA of Euglossa iopoecila (Apidae, Euglossini) reveals two distinct lineages for this orchid bee species endemic to the Atlantic Forest by Penha, Rafael E. S, Gaglianone, Maria C, Almeida, Fernanda S, Boff, Samuel V, Sofia, Silvia H

“…This study analysed the population genetic structure of Euglossa iopoecila, an orchid bee species endemic to the Atlantic Forest which shows a variation in the…”
Get full text

Continuous Micro-Environments Associated Orchid Bees Benefit from an Atlantic Forest Remnant, Paraná State, Brazil by Sobreiro, Ana Isabel, Peres, Lucas Lopes da Silveira, Boff, Samuel, Henrique, Jessica Amaral, Alves Junior, Valter Vieira

“…The fragmentation and habitat loss are the main causes of pollinators decline worldwide, however very little is known about the composition and distribution of…”
Get full text

A Scientific Note of Housekeeping Genes for the Primitively Eusocial bee Euglossa viridissima Friese (Apidae: Euglossini) by Boff, Samuel, Friedel, Anna, Miertsch, Anja, Quezada-Euàn, J. Javier, Paxton, Robert J, Lattorff, H. Michael G

“…Studies on the expression of genes in different contexts are essential to our understanding of the functioning of organisms and their adaptations to the…”
Get full text

Mating behaviour of the large-head resin bee Heriades truncorum (Megachilidae: Osminii) suggests female plastic strategy in selection of a mating partner and male quality assessment by Boff, Samuel

“…Behavioural courtship display and size of males are two attributes often used by females to select a mating partner. According to sexual selection, such traits…”
Get full text

Exposure to sublethal concentration of flupyradifurone alters sexual behavior and cuticular hydrocarbon profile in Heriades truncorum, an oligolectic solitary bee by Boff, Samuel, Ayasse, Manfred

“…The aboveground oligolectic bee, Heriades truncorum, is a particularly good model for studying the impact of pesticides on sexual communication, since some…”
Get full text

Dynamics of nest occupation and homing of solitary bees in painted trap nests by Boff, Samuel, Friedel, Anna

“…1. The oil‐collecting bee Centris analis (Fabricius, 1804) is an important pollinator for the Neotropical region. The species can be attracted to nest in…”
Get full text

Scientific note on a Neotropical wasp preying on stingless bees by Boff, Samuel, Somavilla, Alexandre

“…The antagonistic interaction between wasps and bees has long driven the attention of beekeepers and evolutionary entomologists. In the most classic reported…”
Get full text

Chemical and Mechanical Signals Trigger Courtship in the Wild Large-Headed Resin Bee Heriades truncorum by Ganuza, Cristina, Ayasse, Manfred, Boff, Samuel

“…Hymenopteran females are mostly highly selective, choosing their mating partner according to male quality signals, and may also signal their fertility through…”
Get full text

Subtle visits despite guards: Theft from nest of stingless bee (Meliponini) by orchid bee (Euglossini) by Santos, Charles Fernando dos, Universidade de Sao Paulo, Instituto de Biociencias, Sao Paulo, Brazil, Boff, Samuel, Universidade de Sao Paulo, Faculdade de Filosofia, Ciencias e Letras de Ribeirao Preto, Ribeirao Preto, SP, Brazil

“…The theft of food items and building materials from nests of stingless bees (Hymenoptera: Apidae: Meliponini) is most commonly carried out by other Meliponini…”
Get full text

Low toxicity crop fungicide (fenbuconazole) impacts reproductive male quality signals leading to a reduction of mating success in a wild solitary bee by Boff, Samuel, Conrad, Taina, Raizer, Josué, Wehrhahn, Marten, Bayer, Melis, Friedel, Anna, Theodorou, Panagiotis, Schmitt, Thomas, Lupi, Daniela

“…Recent reports on bee health suggest that sublethal doses of pesticides have negative effects on wild bee reproduction and ultimately on their population…”
Get full text

LD5o values may be misleading predictors of neonicotinoid toxicity across different bee species by Mayack,Christopher, Boff,Samuel

“…The importance of not only honey bees (Apis mellifera) but also other non-managed bee species and their pollination services has come to light with their…”
Get full text

Conventional agriculture affects sex communication and impacts local population size in a wild bee by Boff, Samuel, Olberz, Sara, Gülsoy, İrem G., Preuß, Marvin, Raizer, Josué, Ayasse, Manfred

“…Man-made agricultural stressors have been identified to compromise the reproductive dynamics of bee populations within agricultural environments. With the aid…”
Get full text