Results 11 to 20 of about 1,457 (180)

A molecular marker distinguishes the subspecies Melipona quadrifasciata quadrifasciata and Melipona quadrifasciata anthidioides (Hymenoptera: Apidae, Meliponinae) [PDF]

Genetics and Molecular Biology, 2000
The stingless bee species Melipona quadrifasciata includes two subspecies, Melipona quadrifasciata anthidioids and Melipona quadrifasciata quadrifasciata. The morphological difference between the two subspecies is the presence of three to five continuous
Ana M. Waldschmidt, Everaldo G. de Barros, Lucio A.O. Campos   +2 more
doaj   +3 more sources

Tragedy of the commons in Melipona bees revisited [PDF]

Biology Letters, 2022
Melipona stingless bees display a paradoxical overproduction of queens, which are later eliminated by nest-mate workers. Mechanistically, it was suggested that the monoterpenoid geraniol deposited into newly provisioned cells by adult bees would cause larvae to develop into queens in Melipona beecheii ...
Ricardo Caliari Oliveira, Viviana Di Pietro, José Javier G. Quezada-Euán, Jorge Ramirez Pech, Humberto Moo-Valle, Tom Wenseleers   +5 more
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Tragedy of the commons in Melipona bees [PDF]

Proceedings of the Royal Society of London. Series B: Biological Sciences, 2004
In human society selfish use of common resources can lead to disaster, a situation known as the 'tragedy of the commons' (TOC). Although a TOC is usually prevented by coercion, theory predicts that close kinship ties can also favour reduced exploitation. We test this prediction using data on a TOC occurring in Melipona bee societies.
Wenseleers, Tom, Ratnieks, Francis L.W.
openaire   +3 more sources

Insights into miRNAs of the Stingless Bee <i>Melipona quadrifasciata</i>. [PDF]

Noncoding RNA
MicroRNAs (miRNAs) are key post-transcriptional regulators involved in a wide range of biological processes in insects, yet little is known about their roles in stingless bees. Here, we present the first characterization of miRNAs in Melipona quadrifasciata using small RNAs (sRNAs) deep sequencing.
Soares DO, Ferreira LYM, Rodrigues GVP, Santos JPN, Lopes ÍS, Amorim Conceição LB, Chagas Moura T, de Faria IJDS, Olmo RP, Santana WC, Costa MA, Rocha Aguiar ERG.   +11 more
europepmc   +4 more sources

Melipona scutellaris Geopropolis: Chemical Composition and Bioactivity

Microorganisms, 2023
Geopropolis has been used in traditional medicine for centuries. In this study, the botanical origin, physicochemical profile, and biological activities of geopropolis from Melipona scutellaris harvested during rainy and dry seasons were investigated.
Sónia Coutinho, Vanessa Matos, Natália Seixas, Hellen Rodrigues, Vanessa B. Paula, Lais Freitas, Teresa Dias, Francisco de Assis Ribeiro Santos, Luís G. Dias, Letícia M. Estevinho   +9 more
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Mitochondrial genome differences between the stingless bees Melipona rufiventris and Melipona mondury (Apidae: Meliponini). [PDF]

Genetics and molecular research : GMR, 2007
Within the Meliponini, a widely distributed group of stingless bees, Melipona rufiventris has been considered as a single, cohesive species. Recently, analysis of morphological characters led to the splitting of this species into two species, M. mondury and M. rufiventris.
G S, Barni, R, Strapazzon, J C V, Guerra, G, Moretto   +3 more
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Geopropolis from <i>Melipona orbignyi</i> and <i>Melipona quadrifasciata anthidioides</i> Enhances Oxidative Stress Resistance and Lifespan in <i>Caenorhabditis elegans</i>. [PDF]

Pharmaceuticals (Basel)
Background: Oxidative stress arises from an imbalance in redox homeostasis, leading to the accumulation of reactive oxygen species. This condition is associated with premature aging, as well as the progression of several chronic noncommunicable diseases.
Dos Santos HF, Campos JF, Balestieri JBP, Leite DF, Oliveira AS, Botelho WH, da Rocha PDS, Baldivia DDS, Balogun SO, de Picoli Souza K, Dos Santos EL.   +10 more
europepmc   +3 more sources

10-hydroxy-2E-decenoic acid (10HDA) does not promote caste differentiation in Melipona scutellaris stingless bees

Scientific Reports, 2021
In bees from genus Melipona, differential feeding is not enough to fully explain female polyphenism. In these bees, there is a hypothesis that in addition to the environmental component (food), a genetic component is also involved in caste ...
Luiza Diniz Ferreira Borges, Letícia Leandro Batista, Serena Mares Malta, Tamiris Sabrina Rodrigues, Jéssica Regina da Costa Silva, Gabriela Venturini, Alexandre da Costa Pereira, Pedro Henrique Gonçalves Guedes, Carlos Ueira-Vieira, Ana Maria Bonetti   +9 more
doaj   +1 more source

Melipona (Eomelipona) bicolor Lepeletier

, 2021
MELIPONA (EOMELIPONA) BICOLOR LEPELETIER Figure 8 Except for the strongly pigmented mandibles and small body size (see table 1), the mature larva of this species with its very small head relative to body size (fig. 8) is as described for M. fallax (Rozen et al., 2019b: fig. 31).
Rozen, Jerome G., Almeida, Eduardo A. B., Smith, Corey Shepard, Jones, Lance Eric   +3 more
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Fungi associated with hives and castes of the Amazonian stingless bees Melipona interrupta and Melipona seminigra

, 2022
Abstract The stingless bees Melipona interrupta and Melipona seminigra have great ecological importance as pollinators and economical importance for its honey production. They are associated with a great diversity of entomofauna and microbiota.
Michael Rubem Miranda Tiago, Ana Cláudia Alves Cortez, João Vicente Braga Souza, Diana Vieira Brito, Gislene Almeida Carvalho-Zilse   +4 more
openaire   +1 more source