High thermal tolerance in high-elevation species and laboratory-reared colonies of tropical bumble bees.
High thermal tolerance in high-elevation species and laboratory-reared colonies of tropical bumble bees.
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DOI：
10.1002/ece3.9560
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发表时间：
2022-12
影响因子：
2.6
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中科院分区：
文献类型：
--
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大黄蜂是主要的传粉者，有些物种以商业规模圈养，但有大量证据表明种群数量下降，并预测在气候变化情景下会产生重大影响。虽然对温带熊蜂的热生物学研究仍然有限，但它们完全不存在于气候变化影响预计更大的热带地区。在这里，我们测试蜜蜂的耐热性是否会随着海拔的升高而降低，以及实验室饲养的蜂群中使用的稳定的最佳条件是否会降低它们的耐热性。我们评估了哥伦比亚安第斯山脉两个海拔高度（2600和3600 m）四个物种的临界温度下限（CTMin）和上限（CTMax）的变化，检查了身体大小的影响，并评估了野生捕获和实验室饲养的熊蜂个体的耐热性。我们还收集了有关熊蜂的热极限的信息，并评估了大规模变化模式的潜在预测因子。我们发现CTMin随着海拔的升高而降低，而CTMax在海拔之间相似。实验室饲养的蜜蜂CTMax略高于野生捕获的蜜蜂（0.84°C），而CTMin相似，CTMin随着体型的增加而降低，而CTMax则没有。纬度是一个很好的预测CTMin，而年平均温度，最热和最冷的月份的最高和最低温度是很好的预测CTMin和CTMax。随着海拔的增加，CTMin的反应更强，CTMax相似，支持Brett的热不变假设，这在其他分类群中已有记载。安第斯大黄蜂似乎与温带地区的大黄蜂一样耐热，这表明除了温度之外的其他方面（例如，水平衡）可能是这些物种的更决定性的环境因素。实验室饲养的菌落是解决耐热性和全球变暖影响问题的适当替代品。我们评估了熊蜂的耐热性（上和下），熊蜂是一种主要的传粉昆虫，被认为在全球范围内受到景观和气候变化的威胁。
Bumble bees are key pollinators with some species reared in captivity at a commercial scale, but with significant evidence of population declines and with alarming predictions of substantial impacts under climate change scenarios. While studies on the thermal biology of temperate bumble bees are still limited, they are entirely absent from the tropics where the effects of climate change are expected to be greater. Herein, we test whether bees' thermal tolerance decreases with elevation and whether the stable optimal conditions used in laboratory‐reared colonies reduces their thermal tolerance. We assessed changes in the lower (CTMin) and upper (CTMax) critical thermal limits of four species at two elevations (2600 and 3600 m) in the Colombian Andes, examined the effect of body size, and evaluated the thermal tolerance of wild‐caught and laboratory‐reared individuals of Bombus pauloensis. We also compiled information on bumble bees' thermal limits and assessed potential predictors for broadscale patterns of variation. We found that CTMin decreased with increasing elevation, while CTMax was similar between elevations. CTMax was slightly higher (0.84°C) in laboratory‐reared than in wild‐caught bees while CTMin was similar, and CTMin decreased with increasing body size while CTMax did not. Latitude is a good predictor for CTMin while annual mean temperature, maximum and minimum temperatures of the warmest and coldest months are good predictors for both CTMin and CTMax. The stronger response in CTMin with increasing elevation, and similar CTMax, supports Brett's heat‐invariant hypothesis, which has been documented in other taxa. Andean bumble bees appear to be about as heat tolerant as those from temperate areas, suggesting that other aspects besides temperature (e.g., water balance) might be more determinant environmental factors for these species. Laboratory‐reared colonies are adequate surrogates for addressing questions on thermal tolerance and global warming impacts. We assessed the thermal tolerance (upper and lower) of bumble bees, a major group of pollinators that are considered at risk globally by changes in landscape and climate.
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影响因子：
16.6
作者：
Bennett JM;Sunday J;Calosi P;Villalobos F;Martínez B;Molina-Venegas R;Araújo MB;Algar AC;Clusella-Trullas S;Hawkins BA;Keith SA;Kühn I;Rahbek C;Rodríguez L;Singer A;Morales-Castilla I;Olalla-Tárraga MÁ
通讯作者：
Olalla-Tárraga MÁ
影响因子：
2.9
作者：
Baudier, Kaitlin M.;D'Amelio, Catherine L.;O'Donnell, Sean
通讯作者：
O'Donnell, Sean
影响因子：
5.2
作者：
Boyle, Michael J. W.;Bishop, Tom R.;Ewers, Robert M.
通讯作者：
Ewers, Robert M.
影响因子：
4.8
作者：
Bujan, Jelena;Roeder, Karl A.;Kaspari, Michael
通讯作者：
Kaspari, Michael
影响因子：
2.2
作者：
Bishop, Tom R.;Robertson, Mark P.;Parr, Catherine L.
通讯作者：
Parr, Catherine L.