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Melo BKCD, Silva JAD, Gomes RDDS, Custódio PP, Lira GAD, Ramalho AMZ, Gonçalves MC, Fonseca SBD, Rangel AHDN, Bezerra MDF. Physicochemical composition and functional properties of bee pollen produced in different locations. BRAZILIAN JOURNAL OF FOOD TECHNOLOGY 2023. [DOI: 10.1590/1981-6723.00622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Correlation of Climatic Factors with the Weight of an Apis mellifera Beehive. SUSTAINABILITY 2022. [DOI: 10.3390/su14095302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
The bee Apis mellifera plays an important role in the balance of the ecosystem. New technologies are used for the evaluation of hives, and to determine the quality of the honey and the productivity of the hive. Climatic factors, management, flowering, and other factors affect the weight of a hive. The objective of this research was to explain the interrelationship between climatic variables and the weight of an Apis mellifera beehive using a vector autoregressive (VAR) model. The adjustment of a VAR model was carried out with seven climatic variables, and hive weight and its lags, by adjusting an equation that represents the studied hive considering all interrelationships. It was proven that the VAR (1) model can effectively capture the interrelationship among variables. The impulse response function and the variance decomposition show that the variable that most influences the hive weight, during the initial period, is the minimum dew point, which represents 5.33% of the variance. Among the variables analyzed, the one that most impacted the hive weight, after 20 days, was the maximum temperature, representing 7.50% of the variance. This study proves that it is possible to apply econometric statistical models to bee data and to relate them to climatic data, contributing significantly to the area of applied and bee statistics.
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Alzate-Marin AL, Rivas PMS, Galaschi-Teixeira JS, Bonifácio-Anacleto F, Silva CC, Schuster I, Nazareno AG, Giuliatti S, da Rocha Filho LC, Garófalo CA, Martinez CA. Warming and elevated CO 2 induces changes in the reproductive dynamics of a tropical plant species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 768:144899. [PMID: 33736351 DOI: 10.1016/j.scitotenv.2020.144899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
Tropical plant species are vulnerable to climate change and global warming. Since flowering is a critical factor for plant reproduction and seed-set, warming and elevated atmospheric carbon dioxide concentrations (eCO2) are crucial climate change factors that can affect plant reproductive dynamics and flowering related events in the tropics. Using a combined free-air CO2 enrichment and a free-air temperature-controlled enhancement system, we investigate how warming (+2 °C above ambient, eT) and elevated [CO2] (~600 ppm, eCO2) affect the phenological pattern, plant-insect interactions, and outcrossing rates in the tropical legume forage species Stylosanthes capitata Vogel (Fabaceae). In comparison to the control, a significantly greater number of flowers (NF) per plot (+62%) were observed in eT. Furthermore, in warmed plots flowers began opening approximately 1 h earlier (~09:05), with a canopy temperature of ~23 °C, than the control (~09:59) and eCO2 (~09:55) treatments. Flower closure occurred about 3 h later in eT (~11:57) and control (~13:13), with a canopy temperature of ~27 °C. These changes in flower phenology increased the availability of floral resources and attractiveness for pollinators such as Apis mellifera L. and visitors such as Paratrigona lineata L., with significant interactions between eT treatments and insect visitation per hour/day, especially between 09:00-10:40. In comparison to the control, the additive effects of combined eCO2 + eT enhanced the NF by 137%, while the number of A. mellifera floral visits per plot/week increased by 83% during the period of greatest flower production. Although we found no significant effect of treatments on mating system parameters, the overall mean multilocus outcrossing rate (tm = 0.53 ± 0.03) did confirm that S. capitata has a mixed mating system. The effects of elevated [CO2] and warming on plant-pollinator relationships observed here may have important implications for seed production of tropical forage species in future climate scenarios.
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Affiliation(s)
- Ana Lilia Alzate-Marin
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, 14049-900 Ribeirão Preto, SP, Brazil; Department of Genetics, Graduate Program in Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, 14049-900 Ribeirão Preto, SP, Brazil.
| | - Priscila Marlys Sá Rivas
- Department of Genetics, Graduate Program in Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, 14049-900 Ribeirão Preto, SP, Brazil
| | - Juliana S Galaschi-Teixeira
- Department of Biology, Ribeirão Preto School of Philosophy, Science and Literature, University of São Paulo, Av. Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil
| | - Fernando Bonifácio-Anacleto
- Department of Genetics, Graduate Program in Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, 14049-900 Ribeirão Preto, SP, Brazil
| | - Carolina Costa Silva
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, 14049-900 Ribeirão Preto, SP, Brazil
| | - Ivan Schuster
- Longping High-Tech, SP-330, km 296, 14140-000 Cravinhos, SP, Brazil
| | - Alison Gonçalves Nazareno
- The Biosciences Institute (IB), University of São Paulo, Rua do Matão, Tv. 14 - Butantã, 05508-090 São Paulo, SP, Brazil; Department of Genetics, Ecology and Evolution, Federal University of Minas Gerais (UFMG), Av. Antônio Carlos, 6627 - Pampulha/Caixa Postal 486, 31270-901 Belo Horizonte, MG, Brazil
| | - Silvana Giuliatti
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, 14049-900 Ribeirão Preto, SP, Brazil; Department of Genetics, Graduate Program in Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, 14049-900 Ribeirão Preto, SP, Brazil
| | - Léo Correia da Rocha Filho
- Department of Biology, Ribeirão Preto School of Philosophy, Science and Literature, University of São Paulo, Av. Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil
| | - Carlos A Garófalo
- Department of Biology, Ribeirão Preto School of Philosophy, Science and Literature, University of São Paulo, Av. Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil
| | - Carlos A Martinez
- Department of Biology, Ribeirão Preto School of Philosophy, Science and Literature, University of São Paulo, Av. Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil.
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