Canalized weapon development but high levels of overall phenotypic variation in an evolutionarily novel ant male morph [0.03%]
进化新颖的蚂蚁雄性形态的 canalized 武器发育但整体表型变异水平很高
Jennifer Neupert,Lara Drechsel,Jürgen Heinze et al.
Jennifer Neupert et al.
Sexual selection is responsible for the evolution of exaggerated morphologies in males of many animal species. In extreme cases, this has led to the emergence of novel morphs, which differ discretely from ancestral phenotypes. Morphological...
Adaptive nutrient responses vary with growing environment but not altitudinal origin in an invasive plant [0.03%]
入侵植物的适应性营养响应随生长环境而变化但与其海拔起源无关
Aaron Millar,Hazel Chapman
Aaron Millar
Invasive plants often thrive in nutrient rich environments because of their superior ability to capture and efficiently exploit nutrients. This fitness advantage is commonly explained by invasive species being more plastic than their non-in...
Temporal changes in sex-specific cryptic sexual dimorphism and allometric scaling in the long-lived Alpine swift Tachymarptis melba [0.03%]
长寿命鸟类 Alpine swift 隐形两性异 morph 的时间变化及其尺度缩放性质研究
Michela N Dumas,Pierre Bize,Julien G A Martin
Michela N Dumas
Morphological differences between the sexes are frequently reported in wild populations, which can extend beyond overall body size and result in differences in the size and/or shape of specific traits. Sexually selected traits have historic...
D J Hosken,J L Fitzpatrick,T Pizzari et al.
D J Hosken et al.
Sperm length is highly variable within ejaculates, between males, populations and across species. While theory makes strong predictions about expected mean sperm size, there is less clarity on variation in sperm, although studies have repor...
Rebekah Hall,Ailene MacPherson
Rebekah Hall
Populations are often spread across a spatially heterogeneous landscape, connected by migration. Consequently, the question arises whether divergent selective forces created by spatial heterogeneity can overcome the homogenising force of mi...
Mimetic females do not bear reproductive costs: Challenging the sexual selection hypothesis in female-limited mimetic polymorphism in butterflies [0.03%]
模拟雌性不需要承受繁殖成本：挑战蝴蝶雌性限制模仿多态性的性选择假说
Shuya Yoshioka,Mitsuho Katoh,Tomohiro Suzuki et al.
Shuya Yoshioka et al.
Batesian mimicry has been regarded as classic evidence of adaptation by natural selection, in which a palatable species avoids predation by resembling unpalatable species. In some butterfly species, Batesian mimicry is female-limited and mi...
An MHC class II supertype confers resistance to a sexually transmitted bacterium in females but not in males in a genetically monogamous seabird [0.03%]
一种MHC II类超型在遗传单配性海鸟中使雌性而非雄性获得了对性传播细菌的抵抗力
Léa Ribeiro,Pierrick Blanchard,Frédéric Manas et al.
Léa Ribeiro et al.
The major histocompatibility complex (MHC) is a gene cluster essential for pathogen recognition in jawed vertebrates. It encompasses the MHC class I genes which primarily recognize intracellular parasites, and the MHC class II genes which p...
Cheating death: selection on digestive physiology overcomes expected growth costs of anti-predator defenses [0.03%]
cheating death: 生态选择让消化生理学克服了防捕食者防御带来的预期生长成本
Michael O&#x;Connor,Tara Lanzer,Wade Boys et al.
Michael O&#x;Connor et al.
Organisms often face a fundamental trade-off between growth and predator avoidance, where traits that enhance growth - such as higher activity rates - also increase predation risk. While many species reduce activity in response to predators...
Multi-level analysis of morphological variation in the vertebral column of lagomorph mammals [0.03%]
兔形目脊柱多级形态学变异分析
Nuttakorn Taewcharoen,Megu Gunji,Rachel Norris et al.
Nuttakorn Taewcharoen et al.
Characterising morphological variation along the vertebral column of mammals is commonly investigated at a broad phylogenetic scale, leaving within-species variation understudied due to the requirement of larger sample sizes. This leads to ...
Sexual selection in wild populations of seed bugs: the role of size in pre-copulatory mate choice by females and males [0.03%]
种子虫野生成群中雌雄伴侣选择中的大小作用机制及性选择问题研究
Ophelia S Fritsch,David M Shuker
Ophelia S Fritsch
Although sexual selection is a well-established part of evolutionary biology, controversies remain about the roles of males and females. For instance, despite clear evidence of male mate choice across a very broad range of species, traditio...