Using age grading by wing injuries to estimate size-dependent adult survivorship in the field:: a case study of the yellow dung fly Scathophaga stercoraria
Using age grading by wing injuries to estimate size-dependent adult survivorship in the field:: a case study of the yellow dung fly Scathophaga stercoraria
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DOI：
10.1046/j.1365-2311.2002.00453.x
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发表时间：
2002-10-01
影响因子：
2.2
通讯作者：
Blanckenhorn, WU
中科院分区：
文献类型：
--
作者：
Burkhard, DU;Ward, PI;Blanckenhorn, WU
1.对自然选择的研究依赖于对野外寿命和死亡率的估计。在小的和移动的物种，如昆虫，直接的，标记-再捕获（标记-再捕获），研究是很难进行的，因为个人不能很容易地跟踪。研究了仅基于翅膀损伤的年龄分级是否可用于估计黄粪蝇Scathophaga stercoraria（L.）（双翅目：蝇科）。3.在整个春季和秋季飞行季节，记录了两性不同类型的翅膀损伤的积累：撕裂，缺口（两者都反映了定期磨损），和大的缺失区域（可能是由于种内和种间的相互作用）。春季和秋季，雌性的寿命随个体大小的增加而增加，而雄性的寿命在春季随个体大小的增加略有增加，但在秋季有所下降.两种性别和男性的不同大小的类积累的各种类型的翅膀受伤的差异，大概是由于种内相互作用的差异模式。此外，身体大小表现出季节性模式，使身体大小和翅膀损伤之间关系的解释复杂化。因此，可以得出结论，估计成人的生存能力选择的身体大小使用翅膀受伤是有问题的粪蝇，也可能在其他物种。有人建议，在此方法应用于任何特定的物种，试点研究应进行验证是否翼损伤积累同样在所有类别的个人的利益。此外，有必要调查不同类型机翼损伤的原因。
1. Studies of natural selection depend on estimates of longevity and mortality in the wild. In small and mobile species such as insects, direct, mark-recapture (resight), studies are difficult to perform because individuals cannot be tracked easily.2. It was investigated whether age grading based on wing injuries alone can be used to estimate size-specific survivorship in the field in the yellow dung fly Scathophaga stercoraria (L.) (Diptera: Scathophagidae).3. The accumulation of different types of wing injury throughout the spring and autumn flight seasons for both sexes was recorded: tears, notches (both reflecting regular wear), and large missing areas (probably due to intra- and inter-specific interactions).4. Female longevity increased with body size in both spring and autumn, whereas male longevity increased slightly with size in spring but decreased in autumn.5. The two sexes and males of different size classes accumulated the various types of wing injury differentially, presumably due to differential patterns of intraspecific interactions. Additionally, body size exhibited a seasonal pattern, complicating interpretation of the relationship between body size and wing injuries.6. It is therefore concluded that estimating adult viability selection on body size using wing injuries is problematic in dung flies, and potentially also in other species. It is suggested that before this method is applied in any particular species, pilot studies should be conducted to verify whether wing injuries accumulate equally in all classes of individuals of interest. In addition, it is necessary to investigate the causes of different types of wing injury.