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"Nishiwaki, Masaharu"

Nishiwaki, Masaharu: SEE ALSO Kasuya & Nishiwaki, 1978. (detail)
 
 
 Nishiwaki, Masaharu (detail)
   
1967
Distribution and migration of marine mammals in the North Pacific area.
Bull. Ocean Res. Inst. Univ. Tokyo No. 1: 1-64. 22 figs. 8 pls. Dec. 1967.
–Sirs., 7-8?
 
 
 Nishiwaki, Masaharu (detail)
   
1968
Dugong and manatee.
Animals and Zoo 20(2): 48-51.
–In Japanese.
 
 
 Nishiwaki, Masaharu (detail)
   
1972
General biology. In: S. H. Ridgway (ed.), Mammals of the sea: biology and medicine.
Springfield (Illinois), Charles C Thomas (812 pp.): 3-204.
–Sirs., 192-200.
 
 
 Nishiwaki, Masaharu (detail)
   
1977
Ecology of the dugong and its management.
Mar. Res. Indonesia No. 19: 1-6. 1 tab. 1 fig.
x
 
 Kasuya, Toshio; Nishiwaki, Masaharu (detail)
   
1978
On the age characteristics and anatomy of the tusk of Dugong dugon.
Sci. Rept. Whales Res. Inst. No. 30: 301-310. 1 tab. 3 figs. 4 pls. Dec. 1978.
–Monthly and annual growth layers identified in tusks; females thought to be sexually mature at about 10 years and to live at least 45 years.
 
 
 Nishiwaki, Masaharu (detail)
   
1978
Recent distribution and status of Dugong. [Abstr.]
Congressus Theriol. Internatl. 2: 94. Illus.
x
 
 Nishiwaki, Masaharu; Kasuya, Toshio; Miyazaki, Nobuyuki; Tobayama, Teruo; Kataoka, Teruo (detail)
   
1979
Present distribution of the dugong in the world.
Sci. Rept. Whales Res. Inst. No. 31: 133-141. 2 figs. Dec. 1979.
–Abstr.: Nishiwaki et al. (1981). Summarizes dugong distribution based on interview surveys, and recognizes 5 more or less discrete areas of relatively continuous distribution: eastern Australia, eastern Papua New Guinea, and Melanesia; western Australia, Moluccas, and Philippines; Sumatra, Malaysia, and Andamans; India and Sri Lanka; and East Africa and Madagascar. Suggests that dugong populations in the latter two regions are declining, and offers a population guesstimate of 30,000 animals worldwide. Cites records of rare dugong occurrences at Guam and Yap; discusses the roles of water temperature and ocean currents in dugong distribution; and notes the issuance of dugong postage stamps by the Ryukyus (in 1966) and Tanzania (in 1977).
n
 
 Nishiwaki, Masaharu; Kasuya, Toshio; Tobayama, Teruo; Miyazaki, Nobuyuki; Kataoka, Teruo (detail)
   
1981
Distribution of the dugong (Dugong dugon) in the world. In: H. Marsh (ed.), The dugong. Proceedings of a seminar/workshop held at James Cook University of North Queensland 8-13 May 1979 (q.v.).
[Townsville (Australia)], James Cook Univ. (vii + 400): 8-9.
–Abstr. of Nishiwaki et al. (1979).
x
 
 Nishiwaki, Masaharu; Yamaguchi, M.; Shokita, S.; Uchida, Senzo; Kataoka, Teruo (detail)
   
1982
Recent survey on the distribution of the African manatee.
Sci. Rept. Whales Res. Inst. No. 34: 137-147. 2 figs. Dec. 1982.
–An interview survey in 1980-81 found evidence of T. senegalensis mainly in the Niger River and its tributaries; also in the Sanaga and Ivindo Rivers in Cameroon and Gabon, respectively; and in Gambia, Ivory Coast, and Ghana to some extent. They were found to be scarce or absent elsewhere, and not found at all in salt water. [More recent work by J. A. Powell, Jr., casts doubt on the accuracy of many statements in this report.] Points out the need for an international conservation strategy for the manatee.
 
 
 Nishiwaki, Masaharu (detail)
   
1984a
Current status of the African manatee.
Acta Zool. Fennica No. 172: 135-136.
 
 
 Nishiwaki, Masaharu (detail)
   
1984b
Significance of 55° S in the 'Indian Ocean Sanctuary of Whales' in relation to the distribution of marine mammals.
Mem. Natl. Inst. Polar Res., Special Issue No. 32: 122-129. Illus.
 
 
 Nishiwaki, Masaharu; Marsh, Helene D. (detail)
   
1985
Dugong, Dugong dugon (Müller, 1776). In: S. H. Ridgway & R. J. Harrison (eds.), Handbook of marine mammals. Vol. 3.
London, Academic Press: 1-31. 1 tab. 10 figs.
–Rev.: G.B. Rathbun, Mar. Mamm. Sci. 2(3): 236-237, Jul. 1986.
Daryl P. Domning, Research Associate, Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, and Laboratory of Evolutionary Biology, Department of Anatomy, College of Medicine, Howard University, Washington, D.C. 20059.
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