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首页> 外文期刊>Ethology >Spatial nest-settlement decisions in digger wasps: conspecifics matter more than heterospecifics and previous experience.
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Spatial nest-settlement decisions in digger wasps: conspecifics matter more than heterospecifics and previous experience.

机译：挖掘机黄蜂中的空间筑巢决策：特定物种比异质物种和以前的经验更重要。

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Research into the driving forces behind spatial arrangement of wasp nests has considered abiotic environmental factors, but seldom investigated attraction or repulsion towards conspecifics or heterospecifics. Solitary female digger wasps (Hymenoptera) often nest in dense aggregations, making these insects good models to study this topic. Here, we analysed the nesting patterns in an area shared by three species of the genus Bembix, in a novel study to discover whether female wasps are attracted to or repulsed by conspecific nests, heterospecific nests or their own previously established nests when choosing nest-digging locations. Early in the season, each species showed a clumping pattern of nests, but later in the season, a random distribution of nests was more common, suggesting an early conspecific attraction. Such behaviour was confirmed by the fact that females started building their nests more frequently where other females of their species were simultaneously digging. The distances between subsequent nests dug by individual females were shorter than those obtained by random simulations. However, this pattern seemed to depend on the tendency to dig close to conspecifics rather than remain in the vicinity of previous nests, suggesting that females' experience matters to future decisions only on a large scale. Nesting patches within nest aggregations largely overlapped between species, but the nests of each species were generally not closer to heterospecific nests than expected by chance, suggesting that females are neither repulsed by, nor attracted to, congenerics within nest aggregations. A role of the spatial distribution of natural enemies on the observed nesting patterns seemed unlikely. Bembix digger wasp nest aggregations seem thus to be primarily the result of female-female attraction during nest-settlement decisions, in accordance with the 'copying' mechanisms suggested for nesting vertebrates.
机译：对黄蜂巢的空间排列背后的驱动力的研究已经考虑了非生物环境因素，但很少研究对同种或异种的吸引或排斥。孤独的雌性挖掘者黄蜂（膜翅目昆虫）通常以密集的聚集体筑巢，这使这些昆虫成为研究该主题的好模型。在一项新的研究中，我们在这里分析了Bembix属的三个物种共有的区域中的筑巢模式，以发现雌性黄蜂在选择筑巢时是否被同种巢，异种巢或它们自己先前建立的巢吸引或排斥。位置。在季节的早期，每个物种都显示出簇状的巢，但是在季节的后期，巢的随机分布更为普遍，这表明早期有特定的吸引力。这种现象已被以下事实所证实：雌性开始更频繁地筑巢，而其他同种雌性也在同时挖掘。由雌性个体挖出的后续巢之间的距离比通过随机模拟获得的巢之间的距离短。但是，这种模式似乎取决于趋近于特定物种的趋势，而不是停留在先前的巢穴附近，这表明女性的经历仅对未来的决定有重要影响。巢聚集体中的筑巢斑块在物种之间大部分重叠，但是每个物种的巢通常不比偶然期望的更接近异种巢，这表明雌性既不被巢聚集体中的同类所排斥也不被其吸引。天敌的空间分布在观察到的嵌套模式上的作用似乎不太可能。因此，根据为筑巢脊椎动物建议的“复制”机制，Bembix挖掘者黄蜂的巢状聚集似乎主要是雌鸟-雌性在筑巢决定期间的结果。

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