Trap-Nesting Bees in Montane Grassland (Campo Rupestre) and Cerrado in Brazil: Collecting Generalist or Specialist Nesters

Araújo, Paulo Costa; Lourenço, A. P.; Raw, Anthony

doi:10.1007/s13744-016-0395-9

Cited by 11 publications

(8 citation statements)

References 27 publications

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“…Nevertheless, species richness and abundance in colonized nests was high compared to other studies in highland regions (see [89,90]). In addition to abiotic conditions, food and nesting resource availability determines the occurrence of some species [37,90,91].…”

Section: Discussioncontrasting

confidence: 59%

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Compositional changes in bee and wasp communities along Neotropical mountain altitudinal gradient

et al. 2017

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Climate conditions tend to differ along an altitudinal gradient, resulting in some species groups’ patterns of lower species richness with increasing altitude. While this pattern is well understood for tropical mountains, studies investigating possible determinants of variation in beta-diversity at its different altitudes are scarce. We sampled bee and wasp communities (Hymenoptera: Aculeata) along an altitudinal gradient (1,000–2,000 m.a.s.l.) in a tropical mountainous region of Brazil. Trap nests and Moericke traps were established at six sampling points, with 200 m difference in altitude between each point. We obtained average climate data (1970–2000) from Worldclim v2 for altitudes at each sampling site. Nest traps captured 17 bee and wasp species from six families, and Moericke traps captured 124 morphospecies from 13 families. We found a negative correlation between altitude and species richness and abundance. Temperature, precipitation, water vapor pressure, and wind speed influenced species richness and abundance, and were correlated with altitude. β-diversity was primarily determined by species turnover as opposed to nestedness, and Aculeate community similarity was higher for more similar altitudinal ranges. Moericke traps seem to be more efficient for altitudinal surveys compared to nest traps. We found high occurrence of singleton and doubleton species at all altitudes, highlighting the need for long-term studies to efficiently assess hymenopteran diversity in these environments.

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Section: Discussioncontrasting

confidence: 59%

“…In addition to abiotic conditions, food and nesting resource availability determines the occurrence of some species [37,90,91]. Soil characteristics may also be important to nesting success [38,92], because at higher altitudes, soils become more shallow [41] and compact [78], and clay and silt present become increasingly rare.…”

Section: Discussionmentioning

confidence: 99%

Compositional changes in bee and wasp communities along Neotropical mountain altitudinal gradient

et al. 2017

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“…The parasitism rate of the caterpillar-hunting wasps in the colline zone peaked in the transition times between dry and rainy seasons and was time-delayed to the nest-building activity of the caterpillar-hunting wasps in the colline and submontane zone. Parasitoids are often well synchronised to their hosts (Martins et al 1999, Sabino andAntonini 2017) and are often host density-dependent (Gazola and Garófalo 2009, Mesquita and Augusto 2011, Araújo et al 2016. In our study, the number of parasitised brood cells followed the seasonal pattern of the nest-building activity of the hosts, with the highest number of parasitised brood cells at the beginning, middle, and end of the year.…”

Section: Seasonality In Ecological Ratessupporting

confidence: 57%

“…The development time is therefore a coarse estimate to differentiate very short and very long development times. (6) Lastly, we measured the diameters of occupied reed internodes, which correlate with body size with few exceptions (Araújo et al 2016), to estimate mean body size of the community. Sample size may differ among life history traits, as some traits are mutually exclusive.…”

Section: Measurement Of Ecological Rates and Life-history Traitsmentioning

confidence: 99%

Seasonal variation in the ecology of tropical cavity-nesting Hymenoptera on Mt. Kilimanjaro

Mayr¹,

Réquier²,

Peters³

et al. 2021

Frontiers of Biogeography

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Insect communities vary seasonally with changing climatic conditions and related changes in resource availability, strength of competition, or pressure by natural antagonists. But seasonal dynamics, particularly in tropical mountain ecosystems, are not well understood. We monitored cavity-nesting Hymenoptera communities on Mt. Kilimanjaro, Tanzania, to analyse temporal patterns of nest-building activity, ecological rates, and life-history traits in relation to seasonal climatic variation and elevation. We installed trap nests on 25 study sites in natural and disturbed habitat types covering the colline (<1,300 m) and submontane zones (≥1,300 m a.s.l). We analysed patterns of seasonality in the cavity-nesting ecology of Hymenoptera at three different trophic levels-bees, caterpillar-hunting wasps and spider-hunting wasps-over a complete annual period, covering two rainy and two dry seasons. Nest-building activity showed strong seasonal trends in all three investigated trophic levels and peaked at the end of the short rainy season at low elevations. Nest-building activity was considerably higher and seasonal trends were better synchronised between the different trophic levels in the colline zone at low This paper is part of an Elevational Gradients and Mountain Biodiversity Special Issue elevations. We also detected seasonal patterns for parasitism and natural mortality rates, sex ratio, and development time, which varied with trophic level and between elevation levels. Climate and flower abundance were important predictors for seasonal patterns in nest-building activity, ecological rates and life-history traits. These results reveal that seasonal trends in nestbuilding activity of lowland Hymenoptera seem to be linked to changes in climate and resource availability that reflect the seasonal patterns in plant growth and flowering documented in lowland savanna ecosystems. Higher resource availability also increased the sex ratio in bees towards the more costly females and enhanced their survival rates. These spatiotemporal links between climate, resources, ecological rates, and life-history traits indicate high sensitivity of plant-host-antagonist interactions to environmental changes. Highlights • Nest-building activity of cavity-nesting Hymenoptera on Mt. Kilimanjaro showed distinct seasonality at low and high elevations with concordant peaks across trophic levels. • Ecological rates, such as parasitism or natural mortality, showed seasonality, while lifehistory traits more often did not. • Seasonal patterns were more common in the colline than in the submontane zone. • Bees, caterpillar-hunting and spider-hunting wasps showed different seasonal patterns in ecological rates and life-history traits. • Climatic conditions and flower availability partly explained the seasonal patterns in activity of Hymenoptera, with different variables driving different rates, traits, and activity.

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“…They are economically significant in pollinator-dependent crops, and the best solitary species candidates for pollination programs in Brazil since they are widely distributed, relatively constant, and abundant in most cavity-nesting bee studies (Garófalo et al 2004(Garófalo et al , 2012. In fact, trap-nests occupied by these species in the Neotropics are very common, and after the eggs are laid, immatures can be developed in the laboratory (Garófalo et al 2004(Garófalo et al , 2012Araújo et al 2016;Lourenço et al 2020). Molecular studies have indicated that Centris is the closest genus to the corbiculate bees (Euglossini, Meliponini, Bombini, and Apini), where eusociality evolved (Martins et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Vitellogenin of the solitary bees Centris tarsata and Centris analis (Hymenoptera: Apidae): cDNA structural analysis and gene expression

et al. 2020

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Vitellogenin (Vg) plays a vital role in the reproduction of oviparous species, as the precursor of the major egg storage protein. In bees, most of the studies of this protein rely on honey bees (Apis mellifera ), and very little is known in solitary species. The solitary bees Centris tarsata and C. analis were chosen to characterize vg cDNA and better understand its expression. The Vg-deduced amino acid sequences from these bees have typical Vg features found in other hymenopterans. Besides its main site of synthesis, the fat body, transcripts of vg were also observed in ovaries. Males also showed expression of vg , although in lower levels compared with females. During development, vg expression was observed in late larvae, pupae, and female adults. The highest amounts of vg transcripts were observed in egg-laying females. Expression of vg increased rapidly in a few hours after female adult emergence, which indicates that its gene expression does not depend on mating to be triggered. vitellogenin / gene expression / males / ovaries

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Trap-Nesting Bees in Montane Grassland (Campo Rupestre) and Cerrado in Brazil: Collecting Generalist or Specialist Nesters

Cited by 11 publications

References 27 publications

Compositional changes in bee and wasp communities along Neotropical mountain altitudinal gradient

Compositional changes in bee and wasp communities along Neotropical mountain altitudinal gradient

Seasonal variation in the ecology of tropical cavity-nesting Hymenoptera on Mt. Kilimanjaro

Vitellogenin of the solitary bees Centris tarsata and Centris analis (Hymenoptera: Apidae): cDNA structural analysis and gene expression

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