Post-Wildfire Offspring Provisioning by a Solitary Bee is Dominated by Woody Pollen Sources and Uninfluenced by Wildfire Severity

Journal of Forestry, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Language: Английский

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Environmental drivers of wild bee reproductive performance across a South American dryland ecoregion

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2025, Volume and Issue: 292(2045)

Published: April 1, 2025

The reproductive performance of wild bees is a key determinant their population persistence. However, few studies have directly examined the environmental drivers demographic processes using geographically broad approach. In this study, we explored how biotic and abiotic factors influence reproduction solitary, cavity-nesting across Monte Desert ecoregion in Argentina. Using artificial nests standardized sampling spanning 2000 km 20° latitude, related metrics—nest establishment, offspring production survival—to climate (flower abundance, vegetation cover brood parasitism). Climate was strongest predictor bee performance: warm, humid conditions during nesting period were associated with reduced nest establishment survival. Brood parasitism further Across Desert’s latitudinal gradient, peaked at mid-latitudes, while survival increased towards higher latitudes. These general patterns matched those M. leucografa, most abundant species. findings highlight sensitivity to climatic conditions, particularly period. Our study advances our understanding potential impacts change on Neotropical bees, where extensive areas are experiencing dramatic land-use changes.

Language: Английский

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The Establishment and Potential Spread ofOsmia cornutain North America

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: June 19, 2024

Abstract Mason bees, subgenus Osmia Panzer (Hymenoptera: Megachilidae), are economically and ecologically significant pollinators. In eastern North America, the rapid spread of two non-native species from Asia, O. cornifrons Radoszkowski taurus Smith, has coincided with declines in native populations, raising concern about effects further exotic invasions. Here we investigate recent establishment British Columbia, Canada European orchard bee, cornuta Latreille, previously thought to be limited Europe its periphery. We document records ranging over 170 km, including sightings live adults discovery a multigenerational nest hundreds cocoons. tested whether these cocoons could discriminated other by training machine learning classifier on features extracted images. The best performing model not reliably discriminate species, possibility inadvertently intermingled future commercial shipments. Spatially isolated suggest ongoing anthropogenic dispersal species. To determine environmentally suitable regions for estimated climate niche using native-range occurrence data. This analysis indicated broad Pacific Northwest America contain potentially habitat. Together, our findings potential it broadly. Our study demonstrates utility accessible biodiversity data archives public observation programs tracking biological invasions highlights need monitoring .

Language: Английский

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Divergent Circadian Foraging Strategies in Response to Diurnal Predation Versus Persistent Rain in Asian Weaver Ant, Oecophylla smaragdina, Suggest Possible Energetic Trade-offs

Journal of Biological Rhythms, Journal Year: 2024, Volume and Issue: 39(3), P. 295 - 307

Published: March 8, 2024

The study of chronobiology foraging behavior in social insects offers valuable models for the investigation circadian rhythms. We scored hourly nest entries and exits Oecophylla smaragdina (Asian weaver ant) workers 9 active non-polydomous nests on days with without rain a primarily diurnal predator present. After determining that display high fidelity, we focused exclusively analyzing entry counts: found significant decrease overall counts individual ants rainy compared non-rainy ( p < 0.0001). They usually maintain typical pattern activity; however, regularity was often distorted during periods but appeared to quickly revert patterns following rain. This lack compensatory activity period supports hypothesis these have enough food reserves withstand pure masking-induced suppression activity. Predation through bird anting, too, decreased cause reversal timing from nocturnal foraging. Daily periodicity significantly disrupted most rain; daily only one due presence predators. Thus, predation both exert impacts Asian ants, while persistent pressure seemed masking (diminution) activity, restricted daytime resulted phase-inversion little diminution. is consistent different energetic strategies being used response pressures by this species.

Language: Английский

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Effect of protein and lipids in pollen on the developmental success of the native solitary bee Osmia lignaria Say

Journal of Apicultural Research, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 9

Published: April 10, 2024

The health of solitary bees is dependent on the pollen they consume, driving their development from larvae to pupae. Nutrients such as proteins and lipids play an important role in bee could be key conservation efforts support declining populations. We examined concentration protein, total lipids, 13 individual lipid classes provisions collected native nesting bee, Osmia lignaria Say, at 22 sites urban rural landscapes western Washington over three years during two distinct foraging periods. results indicate that protein concentrations did not significantly affect larval development. detected higher second period, which was also associated with increased developmental success. Using Next-Generation sequencing pollen, we ascertained plant genera observed richness differ between periods even though levels did. Individual may a successful O. lignaria, hexosylceramide cholesterol ester were positively success, emphasizes need for additional studies

Language: Английский

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Nature’s reset: The effect of native and invasive plant forage on honey bee nutrition and survival

Published: Jan. 1, 2024

As a keystone species, honey bees (Apis mellifera) are pollinators that help sustain our food supply and native ecosystems. Unfortunately, habitat loss widespread pesticide use major drivers of pollinator decline. In the case bees, rates infection colony collapse have been attributed to several interacting factors, including forage diversity abundance. this study, we aimed investigate effect plant on bee health across apiaries located in multiple US cities. Hives were divided into healthy green zones, average yellow unhealthy red zones. We hypothesized survival would increase with number plants foraged. Using DNA metabarcoding samples, qualitative quantitative analyses revealed hive variation due population foraged upon. Forage from zones consisted predominantly primarily invasive plants. Furthermore, hives exposed natural catastrophic event demonstrated high percentage post-disaster. Our study represents first investigation significance overwintering for as well novel research examining events foraging. The availability plays critical role health, performance, fitness, particularly post-catastrophic landscapes. By further understanding unique dynamics between type survival, may be another step closer unlocking mysteries benefit 200,000 other species.

Language: Английский

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The establishment and potential spread of Osmia cornuta (Hymenoptera: Megachilidae) in North America

Environmental Entomology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 25, 2024

Abstract Mason bees, subgenus Osmia Panzer (Hymenoptera: Megachilidae), are economically and ecologically significant pollinators. In eastern North America, the rapid spread of 2 non-native species from Asia, cornifrons Radoszkowski taurus Smith, has coincided with declines in native populations, raising concern about effects further exotic arrivals. Here we investigate recent establishment British Columbia, Canada European orchard bee, cornuta Latreille, previously thought to be limited Europe its periphery. We document O. records ranging more than 170 km, including sightings live adults discovery a multigenerational nest hundreds cocoons. tested whether these cocoons could discriminated other by training machine learning classifier on features extracted images. The best performing model not reliably discriminate species, possibility inadvertently intermingled future commercial shipments. Recent occurrence were spatially isolated, suggesting ongoing anthropogenic dispersal species. predicted suitability American habitats for estimating climate niche. This analysis indicated broad regions Pacific Northwest America contain potentially suitable habitat. Our findings potential expansion. study demonstrates utility accessible biodiversity data archives public observation programs tracking highlights need monitoring Osmia.

Language: Английский

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Native Bee Habitat Restoration- Key Ecological Considerations from Recent Literature

Authorea (Authorea), Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 21, 2023

Habitat loss is a primary driver of global biodiversity decline, negatively impacting many species.Nevertheless, one approach to counteract the consequences habitat ecological restoration.Ecological restoration includes transformation degraded or damaged habitats benefit threatened species, including native bees.In this review, we survey ecological, biological, and conservation literature with aim consolidating current research for practical use in bee efforts.We delineate essential steps applicable tools throughout various stages projects, categorizing them into pre-, during-, postrestoration stages.We emphasize importance planning species site-specific strategies support bees, providing floral non-floral resources increasing nest site availability.Lastly, underscore significance conducting evaluations long-term monitoring following efforts.Through identification effective methods, success indicators, areas future research, our study presents comprehensive framework that can guide managers, policymakers, funding agencies during urgent time conservation.

Language: Английский

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