Earthworm burrowing behaviour in 2D terraria with single- and multi-species assemblages
Earthworm burrowing behaviour in 2D terraria with single- and multi-species assemblages
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DOI：
10.1007/s00374-009-0393-8
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发表时间：
2009-09-01
影响因子：
6.5
通讯作者：
Emmerling, Christoph
中科院分区：
文献类型：
--
作者：
Felten, Daniel;Emmerling, Christoph
在2D Terraria中进行了实验，以研究不同生态类别的单物种和多物种组合中不同物种的穴居行为。在2周的时间内，使用图像分析软件定量的穴居行为。Terraria被发现揭示现实的印象，各种物种的穴居行为，根据生态分类的Bouch，epigeic，endogeic和anecic物种。研究结果还允许建议将各种蚯蚓分类为中间种，例如Aporrectodea longa为内-anecic和Lumbricus rubellus为epi-endogeic。与单一物种处理相比，多物种组合物中内生物种的穴居活动显着减少。此外，与特定的单一处理相比，在蚯蚓的存在下，Octolabellutyrtaeum的穴居活动显着降低。这种内生种利用L. terrestris，因此，这是间接的证据之间的anecic和endogeic物种的共生（物种相互作用，其中一个伙伴的利益，而另一个是不受影响的）。本文报道了两种内生种Aporrectodea caliginosa和O.与特定的单一处理相比，Tyrtaeum也显著降低。因此，这可能是种间竞争和营养生态位分离的一种反应。
Experiments were performed in 2D terraria to investigate the burrowing behaviour of different earthworm species from various ecological categories in single- and multi-species assemblages. The burrowing behaviour was quantified using image analysis software during a 2-week period. Terraria were found to reveal realistic impressions of the burrowing behaviour of various species according to the ecological classification of Bouch, into epigeic, endogeic and anecic species. Results of the study also permit the recommending of classifying various earthworms as intermediate species, e.g. Aporrectodea longa as endo-anecic and Lumbricus rubellus as epi-endogeic. Burrowing activity of endogeic species was significantly reduced in multi-species compositions compared to single-species treatments. Moreover, burrowing activity of Octolasion tyrtaeum was significantly reduced in the presence of Lumbricus terrestris compared to the specific single treatment. This endogeic species profited from the burrowing behaviour, e.g. bioturbation, of L. terrestris, and as such this is circumstantial evidence for commensalism (species interaction, in which one partner benefits while the other is unaffected) between anecic and endogeic earthworm species. Simultaneous burrowing activity of a combined assemblage of both endogeic species, Aporrectodea caliginosa and O. tyrtaeum, was also significantly reduced compared with the particular single treatments. Thus, this seems likely to be a response of interspecific competition and trophic niche separation between endogeic species.