Influence of Winter Temperature and Simulated Climate Change on Body Mass and Fat Body Depletion During Diapause in Adults of the Solitary Bee, Osmia rufa (Hymenoptera: Megachilidae)
Influence of Winter Temperature and Simulated Climate Change on Body Mass and Fat Body Depletion During Diapause in Adults of the Solitary Bee, Osmia rufa (Hymenoptera: Megachilidae)
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DOI：
10.1603/en12004
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发表时间：
2012-12-01
影响因子：
1.7
通讯作者：
Krishnan, Natraj
中科院分区：
文献类型：
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作者：
Fliszkiewicz, Monika;Giejdasz, Karol;Krishnan, Natraj
研究了欧洲独居蜂 Osmia rufa L.（膜翅目：Megachilidae）滞育期间模拟气候变化对体重和体内脂肪储备消耗的影响。从九月到三月从室外巢穴中饲养并收集昆虫（雌性）。一组雌性立即称重并解剖以进行分析，而另一组在分析前接受模拟较高温度（15 摄氏度，持续 7 天）。在自然条件下，从 9 月到 1 月，随着气温的下降，雌性蜜蜂的体重和脂肪含量逐渐下降。 1-3月气温逐渐升高，体重和脂肪含量进一步下降。脂肪体发育指数从9月至10月的5（约89%的个体）下降到11月至2月的4（约84%的个体），并在出苗前进一步降至3月的3（约95%的个体）。模拟的暖冬温度也导致体重和脂肪含量的类似下降；然而，体重和脂肪含量下降得更快。大多数个体的脂肪体发育指数在 12 月份下降到 3，并一直维持在这个水平，直到 3 月份出苗前。综上所述，我们的数据表明，在模拟气候变化条件下，身体脂肪储备会提前耗尽，这可能会影响 O. rufa 的卵巢发育和生殖健康。
The influence of simulated climate change on body weight and depletion of fat body reserves was studied during diapause in the European solitary bee Osmia rufa L. (Hymenoptera: Megachilidae). Insects (females) were reared and collected from outdoor nests from September to March. One cohort of females was weighed and dissected immediately for analyses, whereas another cohort was subjected to simulated warmer temperature (15 degrees C for 7 d) before analyses. A gradual decline in body mass and fat body content was recorded with declining temperatures from September to January in female bees from natural conditions. Temperature increased gradually from January to March with a further decline in body mass and fat body content. The fat body development index dropped from five in September-October (approximate to 89% individuals) to four for the period from November to February (approximate to 84% individuals) and further to three in March (95% individuals) before emergence. Simulated warmer winter temperature also resulted in a similar decline in body weight and fat body content; however, body weight and fat body content declined faster. The fat body development index dropped to three in December in the majority of individuals and continued at this level until March just before emergence. Taken together, our data indicate an earlier depletion of fat body reserves under simulated climate change conditions that may impact ovarian development and reproductive fitness in O. rufa.