Study of accidents caused by rockfall in Kochi Prefecture

2021 ◽  
pp. 1349-1354
Author(s):  
T. Ushiro ◽  
Y. Matsumoto ◽  
N. Akesaka ◽  
N. Yagi
Keyword(s):  
The Lancet ◽  
1983 ◽  
Vol 322 (8357) ◽  
pp. 1029 ◽  
Author(s):  
Hirokuni Taguchi ◽  
Masatoshi Fujishita ◽  
Isao Miyoshi ◽  
Isao Mizobuchi ◽  
Akira Nagasaki

1954 ◽  
Vol 6 (5) ◽  
pp. 360-373,407
Author(s):  
Osamu YAMAZAKI
Keyword(s):  

1953 ◽  
Vol 4 (6) ◽  
pp. 476-490,544
Author(s):  
Osamu Yamazaki
Keyword(s):  

2017 ◽  
Vol 31 (2) ◽  
pp. 125 ◽  
Author(s):  
Ko Tomikawa ◽  
Masaki Kyono ◽  
Keiko Kuribayashi ◽  
Takafumi Nakano

Amphipod crustaceans are dominant in subterranean habitats, and members of eight genera are endemic to groundwater environments in the Japanese Archipelago. The taxonomic status of two of these genera remains unclear, because their original descriptions were incomplete. The descriptions of the enigmatic subterranean monotypic genus Awacaris and its type species, A. kawasawai Uéno, 1971, are revisited here. Awacaris kawasawai was originally described based on specimens from a subterranean stream at Himise Cave, Tokushima Prefecture, Shikoku, Japan. Recently, a new population of A. kawasawai was found at Saruta Cave, Kochi Prefecture, Shikoku. Detailed observation of the newly collected specimens reveals the presence of sternal gills, which is the diagnostic character of the pontogeneiid genus Sternomoera, making the validity of Sternomoera open to question. Phylogenetic analyses using nuclear 28S rRNA and mitochondrial cytochrome c oxidase subunit I markers demonstrate that A. kawasawai forms a well-supported clade with the subterranean S. morinoi Tomikawa and Ishimaru, 2014. In addition, phylogenetic analysis reveals cryptic diversity in epigean species of Sternomoera. Ancestral state reconstruction suggests that catadromous Sternomoera species have evolved from freshwater ancestors. Based on our morphological and phylogenetic analysis of Awacaris and Sternomoera species, it is concluded here that Sternomoera should be treated as a subjective junior synonym of Awacaris.


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