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geographical variations
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  地理变异
     THE SUBSPECIES DIFFERENTIATION OF RING NECKED PHEASANTS IN GANSU PROVINCE AND TNEIR GEOGRAPHICAL VARIATIONS
     甘肃雉鸡亚种分化及地理变异
短句来源
     The aim of this study is to investigate the temporal changes and geographical variations in songs of rufous-capped babblers (Stachyris ruficeps praecognita) by using cross-correlation function available in Avisoft SAS Lab package.
     本研究的目的在探讨台湾特有亚种山红头(Stachyris ruficeps praecognita)歌声的地理变异及随时间演变的型式。
     All these four qualitative traits were genetically controlled, with a heritability between 0.8342 and 0.9871 in terms of provenance. In addition, both longitudinal and latitudinal geographical variations could be found, with longitudinal variations being dominant.
     4个厚朴质量性状均受较强的遗传控制,其种源遗传力为0.8342~0.9871,且呈经向为主,经、纬双向地理变异
短句来源
     In addition to a primary study of the geographical variations of morphological characteristics and their relationship also described.
     本试验还对云南松形态特征的地理变异规律及其相互间的关系进行了初步探讨。
短句来源
     The result showed that the geographical variations in the species were in the character of ecotypical variations and seven ecotypes were divided.
     结果表明,油松的地理变异具有生态型变异的特点,并划分了7个生态型:1.西北型:抗寒性强,生长慢,针叶短; 2.东北型:生长中等,抗寒性强;
短句来源
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  地理变化
     Geographical Variations of Skull Morphology in Red Deer (Cervus elaphus) in Xinjiang, China
     中国新疆马鹿亚种头骨形态的地理变化(英文)
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  “geographical variations”译为未确定词的双语例句
     The temporal and geographical variations of the lower ionosphere can also be observed.
     并指出使用这种方法可以观测出低电离层在时间上和地理位置上的变化。
短句来源
     STUDY OF METRIC TRAITS AND GEOGRAPHICAL VARIATIONS OF MODERN CHINESE SKULLS
     现代中国人颅骨测量特征及其地区性差异的初步研究
短句来源
     A TRENDFACE ANALYSIS OF GEOGRAPHICAL VARIATIONS IN NEW BAMBOO GROWTH OF PHYLLOSTACHYS HETEROCYCLA CV. PUBESCENS FROM DIFFERENT PROVENANCES
     毛竹种源新竹生长地理变异的趋势面分析
短句来源
     Study on Geographical Variations of Skull Morphology of Rhinolophus sinicus
     中华菊头蝠头骨形态特征地理差异的研究
短句来源
     Using Cross-correlation Analyses to Investigate the Geographical Variations and Temporal Changes in Songs of the Rufous-capped Babbler (Stachyris ruficeps praecognita), Taiwan
     利用声谱交叉相关分析法探讨台湾山红头歌声的时空变异
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  geographical variations
Detailed geographical variations of the agrometeorological indicators revealed in this study can be beneficial for updating management decisions and practice routines in local and regional agricultural productions.
      
Geographical variations in telecommunications systems: the implications for location of activities
      
Seven diseases cover 96% of the causes of this syndrome in many countries of the world, but some geographical variations have been observed.
      
This work stresses the importance of gathering basic information on such items as the characteristics of unidentified TBSPs, and seasonal and geographical variations in PRP production.
      
Registries for these disorders have provided important epidemiological data and shown both racial and geographical variations.
      
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Fleas identified as Peromyscopsylla himalaica(Roths. 1915)were collected from the hilly areasof Teh-hwa, Shao-wu, Chinkiang (Chuan-chow) and Chien-chen, Fukien Province, and fromWen-chow, Chekiang Province in 1956-1957. Comparing these specimens with Rothschild's andKumada's descriptions and drawings of P. himalaica collected from India and Japan, we find thatthere exist certain morphological characters which warrant the erection of a new subspecies, andP. h. sinica subsp. nov. is named. We also agree with Kumada's...

Fleas identified as Peromyscopsylla himalaica(Roths. 1915)were collected from the hilly areasof Teh-hwa, Shao-wu, Chinkiang (Chuan-chow) and Chien-chen, Fukien Province, and fromWen-chow, Chekiang Province in 1956-1957. Comparing these specimens with Rothschild's andKumada's descriptions and drawings of P. himalaica collected from India and Japan, we find thatthere exist certain morphological characters which warrant the erection of a new subspecies, andP. h. sinica subsp. nov. is named. We also agree with Kumada's suggestion that the Indian and Japanese specimens might beconsidered as two different subspecies representing different geographical variations. P. h. sinica subsp. nov. differs from the subsp. of Kumada in the following structures: thatthe shape at the fusion of the manubrium with the tergal apodeme of ninth segment in the maleis an arch as in the majority of fleas, and there is no "ventral sinus" as exists in Kumada'ssubsp. that the apex of the movable finger of the male clasper is of equal width or slightlynarrower than its base, not tapering as in the Japanese subspecies; and that the apex of the seventhsternite of the female, with its sinus deeper and its upper and lower lobes longer than those ofthe subsp. of Kumada. P. h. sinica subsp. nov. is morphologically more close to P. h. himalaica, the typical subsp.from India, and differs by having its finger longer than the process of clasper in most instances,instead of being of equal length. There are 4--5 stout bristles at the bend of the posterior armof the ninth sternite instead of a row of thin bristles. The shape of the apex of the lower lobeof the seventh sternite is truncate instead of being cone-shaped. The head of the spermatheca isevenly elliptical instead of being widest near the apex as in P. h. himalaica. We believe that if more specimens are collected from these localities and studied in detail,especially on the structures of their phallosome the differences between these subspecies would bemore definite. P. h. sinica subsp. nov. appears more frequently from August to December. Present recordsshow that it is a flea of murid rodents and six host species have been listed, i. e. Rattus loseasubsp., R. fulvescens huang, R. confucianus confucianus,R.andersoni, R. edwardsi edwardsi andEothenomys melanogaster.

1.1956—1957年间先后自福建的德化、邵武、晋江(泉州)及建甄等山区地带及浙江温州采到Peromyscopsylla himalaica(Roths.1915)。这是我国的首次记录。以中国标本与Rothschild氏对印度标本及熊田氏对日本标本的描述和图相比较,发现三者在形态上彼此各有区别(表3),认为可以分别成为代表不同地区的三个亚种:印度的为喜马拉雅亚种P.h.himalaica,日本的为熊田氏描述的亚种,中国的为一新亚种,中国亚种P.h.sinicasubsp.nov.。 2.中国亚种多出现于8—12月间,其宿主为鼠类,达6种之多,计有:Rattus loseasubsp.、R.fulvescens huang、R.confucianus confucianus、R.andersoni、R.edwardsiedwardsi及Eothenomys melanogaster。 3.本种的3个亚种都是啮齿动物的跳蚤,它们对于疾病的关系尚不得知,认为有必要作进一步的调查与研究。

The chromosomes of salivary glands of Anopheles sinensis from Zhengzhou (Henan), Shanghai and Youxi (Fujian) districts were studied in 1979-1982 to detect their subspecies classification.The main differences among the gland chromosomes of the 4th instar larvae in these three districts were on the free ends of 2R besides tiny changes on each arm.The characteristics of chromosomes in Youxi was more identical with those in Shanghai than in Zhengzhou. It is seemingly due to the geographical variation.X chromosomes...

The chromosomes of salivary glands of Anopheles sinensis from Zhengzhou (Henan), Shanghai and Youxi (Fujian) districts were studied in 1979-1982 to detect their subspecies classification.The main differences among the gland chromosomes of the 4th instar larvae in these three districts were on the free ends of 2R besides tiny changes on each arm.The characteristics of chromosomes in Youxi was more identical with those in Shanghai than in Zhengzhou. It is seemingly due to the geographical variation.X chromosomes of Anopheles sinensis in these three districts were basically similar one to another, but they vary in position, size and component, especially in the puff position.Compared with Anopheles sinensis from Nanjing, the variance among salivary gland chromosomes of Anopheles sinensis 4th instar larvae renders another evidence of chromosomal polymorphism in the biological world as a whole.

为了探讨我国中华按蚊种下分型的问题,我们于1979~1982年对郑州、上海和福建尤溪地区的中华按蚊唾腺染色体进行了观察。3个地区的中华接蚊四龄幼虫唾腺染色体,除了各臂上有若干细节不同外,以2R游离端的差异为明显。 3个地区中福建尤溪的唾腺染色体特征与上海地区中华按蚊特征的相符点比与郑州地区相符的为多,推想与地理差异有关。3个地区中华按蚊的X染色体基本相似。但泡的位置、大小和组成上存有差异。尤以泡在X染色体上的位置差异最为明显。根据与南京地区中华按蚊的比较结果,认为这些地区中华按蚊四龄幼虫唾腺染色体带型等的差异,可能是生物界中普遍存在的多态现象的反映。

The study on the variation of changeable characters plays an important part in morphology and biology.To make an estimate of diagnostic ability of any morphological character in oyter taxonomy and to select a suitable culture region for oyter culture, it would be helpful to examine thoroughly the individual variation of morphological features and size or weight.This paper is a preliminary study on age variation and geographical variation of several characters of O.plicatula and O.gigas.The...

The study on the variation of changeable characters plays an important part in morphology and biology.To make an estimate of diagnostic ability of any morphological character in oyter taxonomy and to select a suitable culture region for oyter culture, it would be helpful to examine thoroughly the individual variation of morphological features and size or weight.This paper is a preliminary study on age variation and geographical variation of several characters of O.plicatula and O.gigas.The results of statistical analysis shows that individual size and weight of O.plicatula and O.gigas at Jiqi,Fenghua are smaller significantly than that at the other culture region.In this paper,based on the analysis of individual variation of changeable morphological charaeters,the morphological desoription of O.plicatula and O.gigas in the existing literature is also discussed.

可变性状的变异性的研究是形态学和生物学的一个重要组成部分。在牡蛎分类学和养殖学中,变异性的研究有助于确定形态特征的鉴别价值以及选择的养成场或肥育场。本文是对褶牡蛎及长牡蛎各种性状的海域变异和年龄变异的初步探讨。分析结果表明,在奉化吉奇,褶牡蛎和长牡蛎的大小和重量都显著地小于其它海域。本文还对现有文献中有关褶牡蛎及长牡蛎的形态描述进行了讨论。

 
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