Native solitary bee reproductive success depends on early season precipitation and host plant richness

Westreich, Lila R; Westreich, Samuel T.; Tobin, Patrick C.

doi:10.1007/s00442-023-05354-5

Cited by 3 publications

(1 citation statement)

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“…These failed introductions may have resulted from inhospitable climate conditions. As univoltine bees, Osmia s.s. are highly sensitive to the quantity and timing of rainfall, which affects spring emergence and foraging success, and to seasonal temperature variation, which influences developmental rate and the viability of overwintering (Kemp and Bosch 2005, Pitts-Singer et al 2014, Radmacher and Strohm 2011, Westreich et al 2023, White et al 2009). Consistent with this environmental sensitivity, O. lignaria survived at a higher rate when introduced to locations with climates that closely matched their original range (Kemp and Bosch 2005).…”

Section: Introductionmentioning

confidence: 99%

The Establishment and Potential Spread ofOsmia cornuta(Hymenoptera: Megachilidae) in North America

Getz,

Best,

Melathopoulos

et al. 2024

Preprint

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

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Section: Introductionmentioning

confidence: 99%

The Establishment and Potential Spread ofOsmia cornuta(Hymenoptera: Megachilidae) in North America

Getz,

Best,

Melathopoulos

et al. 2024

Preprint

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

Westreich,

Tobin

2024

Journal of Apicultural Research

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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

Dolai,

Soltani,

Smarr

et al. 2024

J Biol Rhythms

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

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Native solitary bee reproductive success depends on early season precipitation and host plant richness

Cited by 3 publications

References 50 publications

The Establishment and Potential Spread ofOsmia cornuta(Hymenoptera: Megachilidae) in North America

The Establishment and Potential Spread ofOsmia cornuta(Hymenoptera: Megachilidae) in North America

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

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

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