柏木支着贝蒂斯模仿在黑色的石的模仿
Brodie J Foster1, Graham A McCulloch1, Yasmin Foster1
1Department of Zoology, University of Otago, Dunedin, New Zealand.
Molecular ecology
|July 28, 2023
概括
无害的石 (Zelandoperla) 通过忧郁症模仿有毒的石 (Austroperla),这是由树基因控制的特征. 这种贝蒂斯模仿可能会随着环境变化而发生变化.
科学领域:
- 进化生物学 进化生物学
- 遗传学 是一个遗传学.
- 生态生态学 生态生态学
背景情况:
- 贝蒂斯模仿,无害物种与有害物种相似,是进化的关键策略.
- 在物种内部的颜色变异是一个独特的案例,只有一些物种中的个体模仿有害模式.
研究的目的:
- 为了研究新西兰石的巴特斯模仿和物种内颜色变异.
- 确定Zelandoperla中的黑色素的遗传基础及其与Austroperla的相似之处.
- 探索这种模仿的生态和进化影响.
主要方法:
- 在Zelandoperla和Austroperla之间进行比较色彩分析.
- 捕食者可口性测试. 捕食者可口性测试. 捕食者可口性测试.
- 全基因组关联研究 (GWAS) 使用194,773个单核酸多态 (SNP).
- 在338个Zelandoperla标本中对树基因组定型.
主要成果:
- 黑色的Zelandoperla在颜色上与Austroperla明显重叠,但味道更好,证实了贝特斯模仿.
- 一个单一的异常位置,木,强烈地区分了黑色与非黑色的Zelandoperla.
- 埃博尼基因解释了约70%的黑色素变异,表明它在黑色素生物合成中起着保留的作用.
结论:
- 木基因对于Zelandoperla中的Bateesian模仿是至关重要的,在六足动物中显示了保存的功能.
- 分布模式表明模仿与息地和模型物种的存在有关.
- 环境变化可能会导致这种模仿系统的适应性转变.
相关概念视频
Predator-Prey Interactions
16.3K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
16.3K
Mate Choice
8.1K
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.
8.1K
Frequency-dependent Selection
22.1K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
22.1K
Position-effect Variegation
6.4K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
6.4K
Nonconscious Mimicry
4.6K
Nonconscious mimicry occurs when individuals alter their mannerisms to match the behaviors and expressions of those nearby, without intention.
4.6K
Fixed Action Patterns
16.1K
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
16.1K


