Rainfall, temperature, and vegetation type influence nesting by the oil-collecting bee Centris (Hemisiella) tarsata in Brazilian restinga

Costa, Danúbia Maria da; Batista, Michela Costa; Brito, A. S.; Barros, Inácio de; Teodoro, Adenir Vieira

doi:10.1007/s13592-019-00688-7

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…Therefore, precipitation could indirectly affect the availability of floral resources for bees. Precipitation could also improve the soil humidity, which helps bees to dig underground nests (da Costa et al, 2019). Therefore, precipitation may help to meet the special nesting requirements for C. gigas.…”

Section: Discussionmentioning

confidence: 99%

Population genomics and phylogeography of Colletes gigas, a wild bee specialized on winter flowering plants

Zhao

et al. 2022

Ecology and Evolution

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Diet specialization may affect the population genetic structure of pollinators by reducing gene flow and driving genetic differentiation, especially in pollen‐specialist bees. Colletes gigas is a pollen‐specialist pollinator of Camellia oleifera , one of the most important staple oil crops in China. Ca . oleifera blooms in cold climates and contains special compounds that make it an unusable pollen source to other pollinators. Thus, C . gigas undoubtedly plays a key role as the main pollinator of Ca . oleifera , with biological and economic significance. Here, we use a population genomic approach to analyze the roles of geography and climate on the genetic structure, genetic diversity, and demographic history of C . gigas . A total of 1,035,407 SNPs were identified from a 582.77 Gb dataset. Clustering and phylogenetic analyses revealed a marked genetic structure, with individuals grouped into nine local clusters. A significant isolation by distance was detected by both the Mantel test ( R = .866, p = .008) and linear regression ( R 2 = .616, p < .001). Precipitation and sunshine duration were positively and significantly ( R ≥ .765, p ≤ .016) correlated with observed heterozygosity ( H o ) and expected heterozygosity ( H e ). These results showed that C . gigas populations had a distinct phylogeographic pattern determined by geographical distance and environmental factors (precipitation and sunshine duration). In addition, an analysis of paleogeographic dynamics indicated that C . gigas populations exhibited patterns of glacial expansion and interglacial contraction, likely resulting from post‐glacial habitat contraction and fragmentation. Our results indicated that the peculiar phylogeographic patterns in C . gigas populations may be related to their specialization under long‐term adaptation to host plants. This work improves our understanding of the population genetics in pollen‐specialist bees. The distinct genetic clusters identified in this study should be taken into consideration for the protection and utilization of this specialized crop pollinator.

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Section: Discussionmentioning

confidence: 99%

Population genomics and phylogeography of Colletes gigas, a wild bee specialized on winter flowering plants

Zhao

et al. 2022

Ecology and Evolution

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“…We considered established nests to be those with their entrance sealed and, after removing a nest in the field, we replaced it with another one of equal dimensions to the one removed to maintain nesting opportunities constant. In the laboratory, we separated the bee cells from the collected nests and placed them in an incubator with controlled temperature (between 24 and 28°C) until the end of larvae development (Costa et al., 2019). We obtained the pollen material, which consisted of faeces and non‐consumed pollen, from the trap nests, and prepared it to use acetolysis (Erdtman, 1960).…”

Section: Methodsmentioning

confidence: 99%

Optimizing coffee production: Increased floral visitation and bean quality at plantation edges with wild pollinators and natural vegetation

Pereira Machado,

Baronio,

Soares Novaes

et al. 2024

Journal of Applied Ecology

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Animal pollination is important for more than 75% of agricultural crops, including coffee, whose productivity can increase with adequate pollination. Bees, including many solitary species, are diverse pollinators, with around 85% of them considered more effective than honeybees in pollen transfer. We assessed the coffee plantation and its surrounding vegetation for solitary bee nesting throughout the coffee flowering season and measured their impact on coffee productivity. We installed collection stations with trap nests inside a coffee plantation, on the border and inside the native vegetation in a farm in Diamantina, MG, Brazil. We used 10 weekly monitored replicates at least 1 km apart. We evaluated fruiting by autogamy in relation to natural pollination and used the increase in fruit set from pollinators to calculate the farmer's monetary gain. We recorded bee visits to the exposed flowers during coffee flowering considering both on the edge and inside the coffee plantation. Ripe fruits were dried, counted and weighed. We discovered 132 solitary bee nests outside the plantation, with 54% containing coffee pollen grains, indicating coffee as an essential resource for bees even outside the crop area. More bee visits occurred at the coffee plantation's edge, resulting in increased fruit production, denser fruits, and rounder fruits in that area. Bagged flowers produced consistent seeds in all locations. The farmer could earn an extra US$1736.37 per hectare if the entire area received the same level of pollination contribution from bees as observed at the coffee border. Synthesis and applications. Our study emphasises the key role of pollinators in coffee production and their impact on fruit and seed characteristics. Bee visits were more frequent on border areas, emphasising their reliance on natural nesting sites. Bee‐mediated pollination positively affected fruit traits and self‐pollinated fruits in plantation borders had reduced mass. Solitary bee nesting was primarily observed in native vegetation, underlining its importance for bee populations. Pollen composition in nests varied with proximity to coffee plantations, indicating landscape vegetation influences pollinator foraging. These findings support optimising coffee plantation design by preserving native vegetation to increase coffee yields and conserve biodiversity.

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Investigating Population Dynamics and Sex Structure of Exolontha castanea Chang (Coleoptera: Melolonthidae) Using Light Traps in Sugarcane Fields in China

et al. 2022

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Rainfall, temperature, and vegetation type influence nesting by the oil-collecting bee Centris (Hemisiella) tarsata in Brazilian restinga

Cited by 3 publications

References 27 publications

Population genomics and phylogeography of Colletes gigas, a wild bee specialized on winter flowering plants

Population genomics and phylogeography of Colletes gigas, a wild bee specialized on winter flowering plants

Optimizing coffee production: Increased floral visitation and bean quality at plantation edges with wild pollinators and natural vegetation

Investigating Population Dynamics and Sex Structure of Exolontha castanea Chang (Coleoptera: Melolonthidae) Using Light Traps in Sugarcane Fields in China

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