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张琛  王勇  张美文 《动物学杂志》2018,53(5):673-681
为了解东方田鼠(Microtus fortis)筑巢行为在不同环境条件下的适应性进化。在实验室内采用48 h等级法和连续144 h巢材获取重量法,比较了东方田鼠长江亚种(M. f. calamorumt)和指名亚种(M. f. fortis)筑巢行为。结果表明,东方田鼠指名亚种和长江亚种皆能主动获取巢材并建筑质量良好的巢,具有稳定的筑巢行为;东方田鼠两个亚种的筑巢行为在利用巢材能力(P < 0.01)和获取巢材能力(P < 0.05)上皆具有显著性差异;指名亚种雌雄个体在利用巢材(P < 0.05)和获取巢材的能力(P < 0.05)上皆具有显著差异,而长江亚种在这两个方面都不存在性别差异。  相似文献
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Jiang X  Gao J  Ni L  Hu J  Li K  Sun F  Xie J  Bo X  Gao C  Xiao J  Zhou Y 《Gene》2012,498(2):288-295
Microtus fortis is a special resource of rodent in China. It is a promising experimental animal model for the study on the mechanism of Schistosome japonicum resistance. The first complete mitochondrial genome sequence for Microtus fortis calamorum, a subspecies of M. fortis (Arvicolinae, Rodentia), was reported in this study. The mitochondrial genome sequence of M. f. calamorum (Genbank: JF261175) showed a typical vertebrate pattern with 13 protein coding genes, 2 ribosomal RNAs, 22 transfer RNAs and one major noncoding region (CR region).The extended termination associated sequences (ETAS-1 and ETAS-2) and conserved sequence block 1 (CSB-1) were found in the CR region. The putative origin of replication for the light strand (O(L)) of M. f. calamorum was 35bp long and showed high conservation in stem and adjacent sequences, but the difference existed in the loop region among three species of genus Microtus. In order to investigate the phylogenetic position of M. f. calamorum, the phylogenetic trees (Maximum likelihood and Bayesian methods) were constructed based on 12 protein-coding genes (except for ND6 gene) on H strand from 16 rodent species. M. f. calamorum was classified into genus Microtus, Arvcicolinae for the highly phylogenetic relationship with Microtus kikuchii (Taiwan vole). Further phylogenetic analysis results based on the cytochrome b gene ranged from M. f. calamorum to one of the subspecies of M. fortis, which formed a sister group of Microtus middendorfii in the genus Microtus.  相似文献
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