scholarly journals Roles of Planners in a Communicative Survey - a case of distant refugees from eastern Japan

2016 ◽  
Vol 6 (1) ◽  
pp. 61-70
Author(s):  
Yoko MATSUDA
Keyword(s):  
Eastern Japan

Evolution of Sex Chromosome Heteromorphy in Geographic Populations of the Japanese Tago’s Brown Frog Complex

2021 ◽  
pp. 1-9
Author(s):  
Chiao Kuwana ◽  
Hiroyuki Fujita ◽  
Masataka Tagami ◽  
Takanori Matsuo ◽  
Ikuo Miura
Keyword(s):  
Sex Chromosomes ◽  
Sex Chromosome ◽  
Mitochondrial Gene ◽  
Population Level ◽  
Chromosome 7 ◽  
Geographic Population ◽  
Geographic Populations ◽  
Western Japan ◽  
Brown Frog ◽  
Eastern Japan

The sex chromosomes of most anuran amphibians are characterized by homomorphy in both sexes, and evolution to heteromorphy rarely occurs at the species or geographic population level. Here, we report sex chromosome heteromorphy in geographic populations of the Japanese Tago’s brown frog complex (2n = 26), comprising Rana sakuraii and R. tagoi. The sex chromosomes of R. sakuraii from the populations in western Japan were homomorphic in both sexes, whereas chromosome 7 from the populations in eastern Japan were heteromorphic in males. Chromosome 7 of R. tagoi, which is distributed close to R. sakuraii in eastern Japan, was highly similar in morphology to the Y chromosome of R. sakuraii. Based on this and on mitochondrial gene sequence analysis, we hypothesize that in the R. sakuraii populations from eastern Japan the XY heteromorphic sex chromosome system was established by the introduction of chromosome 7 from R. tagoi via interspecies hybridization. In contrast, chromosome 13 of R. tagoi from the 2 large islands in western Japan, Shikoku and Kyushu, showed a heteromorphic pattern of constitutive heterochromatin distribution in males, while this pattern was homomorphic in females. Our study reveals that sex chromosome heteromorphy evolved independently at the geographic lineage level in this species complex.

Ground-penetrating radar profiles of Holocene raised-beach deposits in the Kujukuri strand plain, Pacific coast of eastern Japan

2008 ◽  
Vol 248 (1-2) ◽  
pp. 11-27 ◽  
Author(s):  
Toru Tamura ◽  
Fumitoshi Murakami ◽  
Futoshi Nanayama ◽  
Kazuaki Watanabe ◽  
Yoshiki Saito
Keyword(s):  
Ground Penetrating Radar ◽  
Pacific Coast ◽  
Ground Penetrating ◽  
Eastern Japan

Isolation and molecular detection of Ehrlichia species from ticks in western, central, and eastern Japan

2019 ◽  
Vol 10 (2) ◽  
pp. 344-351 ◽  
Author(s):  
Masakatsu Taira ◽  
Shuji Ando ◽  
Hiroki Kawabata ◽  
Hiromi Fujita ◽  
Teruki Kadosaka ◽  
...  
Keyword(s):  
Molecular Detection ◽  
Eastern Japan

scholarly journals High-salinity intermediate water of the Japan Sea in the eastern Japan Basin

2001 ◽  
Vol 106 (C6) ◽  
pp. 11437-11450 ◽  
Author(s):  
Tatsuro Watanabe ◽  
Mitsuyuki Hirai ◽  
Haruya Yamada
Keyword(s):  
High Salinity ◽  
Japan Sea ◽  
Intermediate Water ◽  
Japan Basin ◽  
The Japan Sea ◽  
Eastern Japan

Decreasing trend of ambient dose equivalent rates over a wide area in eastern Japan until 2016 evaluated by car-borne surveys using KURAMA systems

2019 ◽  
Vol 210 ◽  
pp. 105813 ◽  
Author(s):  
Masaki Andoh ◽  
Satoshi Mikami ◽  
Shuichi Tsuda ◽  
Tadayoshi Yoshida ◽  
Norihiro Matsuda ◽  
...  
Keyword(s):  
Wide Area ◽  
Dose Equivalent ◽  
Ambient Dose Equivalent ◽  
Eastern Japan ◽  
Ambient Dose
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