Variation in female life-history traits among Alaskan populations of the threespine stickleback, Gasterosteus aculeatus L. (Pisces: Gasterosteidae) [0.03%]
阿拉斯加刺虾虎鱼(Gasterosteus aculeatus L. )种群中雌性生活史特征的差异分析
JA Baker,SA Foster,DC Heins et al.
JA Baker et al.
Life-history characteristics of female threespine stickleback (Gasterosteus aculeatus) were examined in 12 populations, 11 freshwater and one anadromous, within the Cook Inlet region of Alaska. Because this area has been deglaciated during ...
N Loder,KJ Gaston,PH Warren et al.
N Loder et al.
Within a geographic assemblage, large-bodied species of macrolepidopteran moths tend, on average, to be less host-specific than small-bodied. Five possible explanations for this pattern are identified, based respectively on (i) phylogenetic...
Pacific Coast Iris species delimitation using three species definitions: biological, phylogenetic and genealogical [0.03%]
基于三种物种定义的太平洋沿岸鸢尾属划分：生物物种、系统基因和谱系基因
ND Young
ND Young
Morphological characters are used to discriminate the five Oregon species of the Pacific Coast irises (Iris series Californicae). In nearly every case, fixed differences were found between species, revealing that they are good phylogenetic ...
The significance of relatedness and gene flow on population genetic structure in the®subsocial spider Eresus cinnaberinus (Araneae: Eresidae) [0.03%]
亲缘关系和基因流在半社会性蜘蛛Eresus cinnaberinus(Araneae:Eresidae)种群遗传结构中的作用
J Johannesen,T Baumann,A Seitz et al.
J Johannesen et al.
Interdemic selection, inbreeding and highly structured populations have been invoked to explain the evolution of cooperative social behaviour in the otherwise solitary and cannibalistic spiders. The family Eresidae consists of species rangi...
Mitochondrial DNA phylogeny of Brimstone butterflies (genus Gonepteryx) from the Canary Islands and Madeira [0.03%]
加那利群岛和马德拉岛上的银纹白蝴蝶线粒体DNA系统发育研究
CFA Brunton,GDD Hurst
CFA Brunton
Part of the mitochondrial Cytochrome Oxidase I gene was sequenced for seven species of Gonepteryx (Pieridae) butterflies. Four of the species are island endemics inhabiting the Canary Island archipelago and Madeira. The remaining three are ...
Intraspecific variation in laryngeal and ear morphology in male cricket frogs (Acris crepitans) [0.03%]
北美树蛙属鸣叫器官的种内变异
BE McCLELLAND,W Wilczynski,MJ Ryan
BE McCLELLAND
In a previous report, the authors found significant population variation in the calls of cricket frogs (Acris crepitans) that could not be explained by geographic variation in body size alone. Here we extend that work by investigating intra...
EB Knox
EB Knox
A hierarchy is an abstract organizational model of inter-level relationships among entities. When isomorphic with nature, hierarchies are useful for organizing and manipulating our knowledge. Hierarchies have been used in biological systema...