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首页> 外文期刊>Canadian Journal of Zoology >Costs associated with leg autotomy in the harvestmen Leiobunum nigripes and Leiobunum vittatum (Arachnida: Opiliones)
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Costs associated with leg autotomy in the harvestmen Leiobunum nigripes and Leiobunum vittatum (Arachnida: Opiliones)

机译：与收割者Leiobunum nigripes和Leiobunum vittatum的腿部解剖相关的成本（蛛形纲：Opiliones）

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摘要

The benefits of autotomy of appendages are usually obvious, but the costs are often less apparent. This study reports the effects of leg autotomy on mobility, foraging ability, and sensory perception in L. nigripes and L. vittatum. The running speedof both species was recorded in a test track. Individuals of both species with only 5 legs were significantly slower than those with 6 or more legs. The mobility and foraging abilities of L. nigripes were tested by recording the time it took for them tofind and eat chilled Drosophila virilis. Those harvestmen with only 5 legs spent significantly less time moving and foraging than did those with more legs and took significantly longer to find food than did those with 7 or 8 legs. These results indicatethat significant reductions of mobility and foraging ability occur only after the loss of 3 or more legs. Also, flies were eaten significantly sooner after contact with either of the first legs than after contact with the second legs, suggesting that the first pair of legs is more important in identifying food than had been indicated previously in the literature.
机译：肢体切开术的好处通常是显而易见的，但费用往往不那么明显。这项研究报告了腿部切开术对黑黑麦草和黑麦草的活动性，觅食能力和感官知觉的影响。两种物种的运行速度都记录在测试轨迹中。这两个物种只有5条腿的个体明显慢于6条或更多条腿的个体。通过记录黑麦草查找和食用冷藏果蝇所需的时间，测试了黑麦草的活动性和觅食能力。那些只有5条腿的收割者比有7条腿或8条腿的收割者花费的移动和觅食时间要少得多，并且寻找食物所花的时间也明显更长。这些结果表明，只有失去3条或更多的腿后，活动性和觅食能力才会显着降低。而且，与第一条腿接触后，与第一条腿接触后，苍蝇的进食时间要比与第二条腿接触后要早得多，这表明第一对腿在识别食物方面比文献中先前指出的更为重要。

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