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相关概念视频

Mate Choice01:20

Mate Choice

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Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.
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Optimal Foraging

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How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
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Types of Selection01:46

Types of Selection

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Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
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相关实验视频

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Assessing Species-specific Contributions To Craniofacial Development Using Quail-duck Chimeras
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Assessing Species-specific Contributions To Craniofacial Development Using Quail-duck Chimeras

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霍斯菲尔德的子-子幼模拟了多个隙,用于乞讨.

Keita D Tanaka1, Keisuke Ueda

  • 1Department of Life Sciences, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, 171-8501 Tokyo, Japan. keita@zaf.att.ne.jp

Science (New York, N.Y.)
|April 30, 2005
PubMed
概括

子寄生小,驱逐宿主年轻人面临减少的食. 霍斯菲尔德的子使用独特的翅膀补丁视觉信号来模仿多个幼,确保主机提供足够的食物.

科学领域:

  • 行为生态学 行为生态学
  • 进化生物学 进化生物学
  • 鸟类学 鸟类学是一门学科.

背景情况:

  • 寄生虫的幼经常会驱逐宿主蛋和幼,以断父母的照顾.
  • 这种驱逐策略可以导致由于宿主歧视而导致单一寄生虫的供应率降低.

研究的目的:

  • 为了研究霍斯菲尔德- (Cuculus fugax) 的视觉信号行为.
  • 了解如何驱逐寄生虫幼从寄生父母那里获得足够的食物资源.

主要方法:

  • 在宿主巢中对霍斯菲尔德子子的观测研究.
  • 在主机配置事件期间显示视觉信号的分析.

主要成果:

  • 避开霍斯菲尔德的子-子幼表现出一种特定的视觉信号,包括一个色的翅膀补丁.
  • 这种显示器在食品交付期间呈现给寄宿父母.
  • 翅膀补丁显示器模拟了多个幼的视觉提示,可能欺骗宿主.

结论:

  • 霍斯菲尔德的子子使用一种新的视觉欺骗策略来克服驱逐后减少的供应.
  • 这种信号行为增强了小的食物摄入量,增加了它的生存机会.

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