A5014713345- Plant and animal studies
- Insect and Pesticide Research
- Insect and Arachnid Ecology and Behavior
- Plant Virus Research Studies
- Plant Disease Management Techniques
- Bee Products Chemical Analysis
- Research in Cotton Cultivation
Universidade de São Paulo
2011-2019
Universidade de Ribeirão Preto
2011-2018
KU Leuven
2016-2017
The larval stage of the stingless bee Scaptotrigona depilis must consume a specific brood cell fungus in order to continue development. Here we show that this is member genus Zygosaccharomyces and provides essential steroid precursors developing bee. Insect pupation requires ecdysteroid hormones, as insects cannot synthesize sterols de novo, they obtain steroids their diet. Larval vitro culturing assays demonstrated consuming ergosterol recapitulates developmental effects on S. ingestion sp....
Abstract The differentiation of workers into morphological castes represents an important evolutionary innovation that is thought to improve division labor in insect societies. Given the potential benefits task-related worker differentiation, it puzzling physical castes, such as soldiers, are extremely rare social bees and absent wasps. Following recent discovery soldiers a stingless bee, we studied occurrence 28 bee species from Brazil found several have specialized for colony defence. Our...
The differentiation of workers into morphological subcastes (e.g., soldiers) represents an important evolutionary transition and is thought to improve division labor in social insects. Soldiers occur many ant termite species, where they make up a small proportion the workforce. A common assumption worker caste evolution that soldiers are behavioral specialists. Here, we report first test “rare specialist” hypothesis eusocial bee. Colonies stingless bee Tetragonisca angustula defended by...
Abstract Background In social Hymenoptera (ants, bees and wasps), various chemical compounds present on the cuticle have been shown to act as fertility signals. addition, specific queen-characteristic hydrocarbons implicated sterility-inducing queen signals in ants, wasps bumblebees. Corbiculate bees, however, nature of fertility-linked appears be more diverse than ants wasps. Moreover, it remains unknown how evolved across this group they might co-opted from solitary ancestors. Results...
In insect societies, both queens and workers produce chemicals that reliably signal caste membership reproductive status. The mechanisms help to maintain the honesty of such queen fertility signals, however, remain poorly studied. Here we test if could be based on shared endocrine control production specific signals. support this "hormonal pleiotropy" hypothesis, find in common wasp, application methoprene (a juveline hormone analogue) caused acquire a queen-like cuticular hydrocarbon...
The longhorn crazy ant Paratrechina longicornis is a pest species with worldwide distribution. It tends honeydew-producing Hemiptera to obtain carbohydrates and also an effective predator scavenger. What strategies does P. use aid in hunting scavenging? Our results show that as well long-term recruitment stable food sources, this uses specialized short-term pheromones recruit nest mates assist the exploitation of large items. By mass, 88% externally carried was retrieved cooperatively....
Very little is known about stingless bee reproductive biology or male behaviour. In this note we provide the first observations on aggregations (congregation sites and roosting sites) of some species. Our show that males two species can congregate same site. We also report for time substrates used by resting at night, least one forms large sleeping roosts composed hundreds individuals, roost locations are not reused subsequent nights.
SummarySummaryAlthough stingless bees are capable of maintaining their nest temperature within certain limits, brood production several species declines or even completely stops during periods low ambient temperature. In the present study, we investigated whether meliponine Nannotrigona testaceicornis can be artificially increased through heating colonies cold season. For this, monitored rate cell seven hives in intervals 24 hours under two different experimental conditions: 1. without; and...
Female mating frequency varies. Determining the causes of this variation is an active research area. We tested hypothesis that in stingless bees, Meliponini, single due to execution queens make a matched at complementary sex determination locus and have diploid male offspring. studied Brazilian species Scaptotrigona depilis. made up 70 test colonies so 50% (single mating), 25% (double 12.5% (quadruple or 0% nonmatched mating) emerging brood were males. Queen following emergence was equal...
The sex determination system in the eusocial stingless bees (Apidae, Meliponini) is based on combination of alleles at complementary (CSD) locus. In this system, males are haploid and females diploid. However, diploid can develop from fertilized eggs when they homozygous single or multiple loci. production such negatively affect population viability, since usually infertile inviable. Moreover, viable but infertile, siring sterile triploid offspring, could cause another load population,...
The sex determination system in the eusocial stingless bees (Apidae, Meliponini) is based on combination of alleles at complementary (CSD) locus. In this system, males are haploid and females diploid. However, diploid can develop from fertilized eggs when they homozygous single or multiple loci. production such negatively affect population viability, since usually infertile inviable. Moreover, viable but infertile, siring sterile triploid offspring, could cause another load population,...