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Movements and occurrence in two closely related fritillary species
Ecological Entomology ( IF 2.2 ) Pub Date : 2020-12-03 , DOI: 10.1111/een.12987
Daniela Polic 1 , Carl Tamario 1 , Markus Franzén 1 , Per‐Eric Betzholtz 1 , Yeşerin Yıldırım 1 , Anders Forsman 1
Affiliation  

  1. Mobility may affect species' distribution patterns in heterogeneous landscapes, and it might impact fitness by influencing mating success, predation avoidance, and foraging success. Here, we studied causes and consequences of mobility patterns in butterflies: Argynnis adippe, a specialist constrained to warm microhabitats within woodland landscapes, and A. aglaja, a relative generalist that also inhabits grasslands, and tolerates lower temperatures. We explored associations of movement and occurrence patterns, population size and density, niche breadth, wing size, and different types of behaviour prior to capture by conducting a mark‐release‐recapture study on the Swedish island Öland.
  2. We marked 1 935 A. aglaja and 123 A. adippe and achieved recapture rates of 9.5% (A. aglaja), and 8.9% (A. adippe). Estimated population densities were 5 066 and 814 individuals per km2, for A. aglaja and A. adippe, respectively. Argynnis aglaja was less likely to perform long‐distance flights according to estimated dispersal kernels, hinting at negative density‐dependent dispersal in these species.
  3. Although we detected the longest flight distances ever in these species in MRR studies (11.9 km for A. aglaja and 3.7 km for A. adippe), most butterflies were recaptured within 200 meters (60–80%). Low recapture rates along with low estimated residence times and the potential for long movement might indicate that many individuals left the study area, and that the species form open populations, stretching over large areas.
  4. Despite significant differences in wing size and behaviour types, mean observed flight distances were similar in these species.


中文翻译:

两个密切相关的贝母物种的运动和发生

  1. 活动性可能会影响物种在异质景观中的分布模式,并可能通过影响交配成功,避免捕食和觅食成功而影响适应性。在这里,我们研究了蝴蝶活动模式的成因和后果:Argynnis adippe(专为林地景观内的微栖息地提供温暖的专家)和A. aglaja(也可以在草原上生活并且可以忍受较低温度的相对通才)。我们通过在瑞典岛厄兰岛进行了标记释放再捕获研究,探索了运动和发生方式,种群大小和密度,生态位宽度,机翼大小以及不同类型行为之间的关联。
  2. 我们标记了1 935 A. aglaja和123 A. adippe,并获得了9.5%(A. aglaja)和8.9%(A. adippe)的捕获率。估计人口密度为每平方公里5 066和814个人2,为A. aglajaA. adippe,分别。根据估计的散布核,Argynnis aglaja不太可能进行长距离飞行,这暗示这些物种中负的依赖密度的散布。
  3. 虽然我们在这些物种中MRR研究(11.9 km如果检测到的最长飞行距离不断A. aglaja和3.7 km如果A. adippe),大多数蝴蝶都在200米(60-80%)收复。低的捕获率以及较低的估计停留时间以及长时间移动的可能性可能表明,许多人离开了研究区域,并且该物种形成了大范围的开放种群。
  4. 尽管机翼大小和行为类型存在显着差异,但这些物种的平均观测飞行距离相似。
更新日期:2020-12-03
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