ᄢಽᄢቇᢎ⢒⑔␩⑼ቇㇱ⎇ⓥ♿ⷐ㧔Res. Bull. Fac. Educ.䋧Welf. Sci., Oita Univ.䋩

81㊄㠦ḓߦ↢ᕷߔࠆࠝࠗࠞࡢ㧔Zacco platypus㧕ߩᒻᘒ⊛․ᓽΤ̆♖Ꮍߩᚑᾫߦߟ޿ߡ̆㜞 ự ⑲ ᮸㧖࡮ ᄢ ୖ ㋕ ਽㧖㧖‫ ⷐޣ‬ᣦ‫  ޤ‬᷷ᴰ᳓߇ᵹ౉ߒ㧘᳓᷷߇ᐕਛ⚂ 30͠ߦ଻ߚࠇߡ޿ࠆ㊄㠦ḓߦ↢ᕷߔࠆࠝࠗࠞࡢ㧔Zacco platypus㧕ߪ㧘ᐕ㑆ࠍㅢߒߡ᳓᷷߇ᄌൻߔࠆઁߩ
ᴡᎹߦ↢ᕷߔࠆ୘૕ߦᲧߴߡ㧘ᕈᚑᾫ߇ᣧ޿ߎߣ߇⍮ࠄࠇߡ޿ࠆ‫♖ޕ‬ᎽߩᚑᾫᐲࠍᲧセߔࠆߚ߼ߦ㧘㊄㠦ḓߦ↢ᕷߔࠆᕈᓽ㧔ᇕᆪ⦡ߣㅊᤊߩ⊒⃻㧘ዥ㠈ߩિ㐳㧕ࠍ␜ߔዊဳ㓶୘૕㧔ᐔဋ૕㐳 84.8mm㧕
࡮ᄢಽ⋵ౝߩᴡᎹߦ↢ᕷߔࠆᕈᓽࠍ␜ߔᄢဳ㓶୘૕㧔ᐔဋ૕㐳 118.6mm㧕
࡮ᕈᓽࠍ␜ߐߥ޿ዊဳ㓶୘૕㧔ᐔဋ૕㐳 80.7mm㧕ߩ♖Ꮍߦ߅ߌࠆᒻᘒቇ⊛⸃ᨆࠍⴕߞߚ‫ޕ‬㊄㠦ḓߦ↢ᕷߔࠆࠝࠗࠞࡢߩዊဳ㓶୘૕ߩ♖Ꮍ㧔㐳ߐ 20.3mm㧘⋥ᓘ 1.9mm㧕ߪ㧘ઁߩᴡᎹߩ
ᄢဳ㓶୘૕ߩ♖Ꮍ㧔㐳ߐ 31.4mm㧘⋥ᓘ 2.8mm㧕ࠃࠅ߽ዊߐ޿߇㧘ઁߩᴡᎹߩዊဳ㓶୘૕ߩ♖Ꮍ㧔㐳ߐ 15.0mm㧘⋥ᓘ 0.4mm㧕ࠃࠅ߽ᄢ߈޿ߎߣࠍ␜ߒߚ‫ޕ‬㊄㠦ḓ↥ߣઁᴡᎹߩᄢဳ㓶୘૕ߢߪ㧘♖Ꮍౝߩ♖ዊྙߦᄙᢙߩ♖⚦⢩߇ⷰኤߐࠇࠆ߇㧘ዊဳ㓶୘૕ߢߪ♖ዊྙߦ♖⚦⢩ߩሽ࿷ߪ߹ߛⷰኤߐࠇߥ޿‫ޕ‬↢ᱺ⣼૕ᜰᢙߢߪ㧘㊄㠦ḓ↥ߣઁᴡᎹߩᄢဳ㓶୘૕ߣߩ㑆ߦ᣿⍎ߥᏅ߇ߥ޿‫ޕ‬㊄㠦ḓߦ߅ߌࠆዊဳߩ㓶୘૕ߪ㧘♖Ꮍߦ߅޿ߡ߽ᚑᾫߒߡ޿ࠆߎߣࠍ᣿ࠄ߆ߦߒߚ‫ޕ‬‫  ޤ࠼࡯ࡢ࡯ࠠޣ‬㊄㠦ḓ ࠝࠗࠞࡢ㧔Zacco platypus㧕 ♖Ꮍߩᚑᾫ ♖ዊྙ ♖ሶᒻᚑ ᒻᘒቇ⊛․ᓽߪߓ߼ߦ
㊄㠦ḓߪ᷷ᴰ᳓߇ᵹ౉ߒ㧘᳓᷷߇߶߷ 30͠ߦ଻ߚࠇߡ޿ࠆ႐ᚲ߇޽ࠅ㧘ߘߎߦ↢ᕷߔࠆࠝࠗ
ࠞࡢ㧔Zacco platypus㧕ߪᄢಽ⋵ౝߩઁߩᴡᎹߩ୘૕ࠃࠅ߽㧘቟ቯߒߡᚑ㐳ߒᕈᚑᾫ߇ᣧ޿ߎߣ߇␜ߐࠇߡ޿ࠆ㧔㜞ự㨯ᄢୖ㧘2009a㧕‫ߚ߹ޕ‬㧘ߘߎߢߪࠝࠗࠞࡢߩ↥ෆⴕേ߇౻ቄߦ߅޿ߡ߽ⷰኤߐࠇߡ޿ࠆ㧔㜞ự㨯ᄢୖ㧘2009b㧕‫ޕ‬㝼㘃ߩ♖Ꮍߦ㑐ߔࠆ⚵❱ቇ⊛⎇ⓥߪᲧセ⊛ᄙߊ㧘lobule type ߣ tubular type ߇޽ࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ㧔੖ච፲㧘1968㧧ᨋ㧘1970㧧Abe and Munehara, 2007㧕‫ޕ‬lobule type ߢߪ㧘♖Ꮍߩౝㇱߪᄙᢙߩ♖ዊྙߢ඙ಽߐࠇ㧘ᚑᾫߦ઻޿ᒻᚑߐࠇߚ♖ሶ߇♖ዊྙਛߩ൮ྙߦ⫾߃ࠄࠇ
ᐔᚑ 21 ᐕ 11 ᦬ 2 ᣣฃℂ㧖ߚ߆ߪ߹࡮߭ߢ߈ ᄢಽᄢቇᢎ⢒⑔␩⑼ቇㇱ↢‛ቇᢎቶ㧖㧖߅߅ߊࠄ࡮ߡߟ߿ ᄢಽᄢቇᢎ⢒ቇ⎇ⓥ⑼ᢎ⑼ᢎ⢒ኾ᡹ℂ⑼ᢎ⢒ኾୃ

82㜞 ự࡮ᄢ ୖࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ㧔Abe and Munehara, 2007㧕‫ޕ‬ࠝࠗࠞࡢߩ❥ᱺᦼߪㅢᏱ 6 ᦬㨪8 ᦬ߢ㧘ߘߩᐕߩ❥ᱺⴕേߦෳടߔࠆ㓶୘૕ߩ♖Ꮍߪ 5 ᦬߆ࠄᕆㅦߦ⊒㆐ࠍᆎ߼㧘6 ᦬㧘7 ᦬ߦߪ૕㊀ߩ 0.6㧑㨪2.3㧑ߦ㆐ߔࠆ㧔ਛ᧛㧘1952㧕‫ߩࡢࠞࠗࠝޕ‬♖ᎽߪᏀฝਔ⪲߆ࠄߥࠅ㧘ߎࠇࠄਔ⪲ߪᓟ┵ㇱߢ≹วߒ㧘1 ᧄߩャ♖▤ߦߟߥ߇ࠆ‫ᧂޕ‬ᚑᾫ୘૕ߩ♖Ꮍߪ⚦޿♻⁁ߢㅘ᣿ߥ⊕⦡ࠍ␜ߔ߇㧘ᚑᾫ୘૕ߦ߅޿ߡߪ♖Ꮍ߇⢈ᄢߒ㧘੃⊕⦡ࠍ๒ߔࠆ㧔᳓ญ࡮ᯫጊ㧘1969㧧᳓ญ㧘1970㧕‫ࠄ߇ߥߒ߆ߒޕ‬㧘ࠝࠗࠞࡢ♖Ꮍߩ♖ሶᒻᚑߦ㑐ߔࠆ⎇ⓥ
ߪዋߥߊ㧘㊄㠦ḓߦ↢ᕷߔࠆዊဳߢ޽ࠆ߇ᕈᓽ㧔ᇕᆪ⦡ߣㅊᤊߩ⊒⃻㧘ዥ㠈ߩિ㐳㧕ࠍ␜ߔ㓶୘૕ߩ♖Ꮍߩᒻᘒߦߟ޿ߡߪ૗߽ಽ߆ߞߡ޿ߥ޿‫ߢߎߘޕ‬㧘ᧄ⎇ⓥߪ㧘㊄㠦ḓ↥ߩᕈᓽࠍ␜ߔዊဳ㓶୘૕ߣ㧘ઁߩᴡᎹߦ↢ᕷߔࠆᕈᓽࠍ␜ߔᄢဳ㓶୘૕߅ࠃ߮ᄢ߈ߐߪ㊄㠦ḓߣ߶߷หߓߢ
޽ࠆ߇ᕈᓽࠍ␜ߐߥ޿ዊဳ㓶୘૕ߦ߅޿ߡ㧘♖Ꮍߩᄖᒻ⸘᷹ߣ㗼ᓸ㏜ⷰኤࠍⴕ޿㧘ᚑᾫᐲࠍᲧセߒߚ‫ޕ‬


᧚ᢱߣᣇᴺ
ࠝࠗࠞࡢߩ㓶୘૕ࠍ 2008 ᐕ 4 ᦬߆ࠄ 2009 ᐕ 8 ᦬ߦ߆ߌߡ㧘㊄㠦ḓ߅ࠃ߮ᄢಽ⋵ౝߩᴡᎹ㧔የ↰Ꮉ࡮ኙ↰Ꮉ࡮ฎᎹ㧕ߢ᝝₪ߒߚ‫ߚߒ↪૶ޕ‬୘૕ߩᄢ߈ߐߪ㧘㊄㠦ḓ↥ߩᕈᓽࠍ␜ߔዊဳ
㓶୘૕߇ᐔဋ૕㐳 84.8 mm㧔ᮡḰ஍Ꮕ㫧9.3㧘୘૕ᢙ N㧩6㧕ߢ㧘ᄢಽ⋵ౝߩᴡᎹߦ↢ᕷߔࠆᕈᓽࠍ␜ߔᄢဳ㓶୘૕߇ᐔဋ૕㐳 118.6 mm㧔㫧5.4㧘N㧩7㧕ߢ㧘ᕈᓽࠍ␜ߐߥ޿ዊဳ㓶୘૕ߪᐔဋ૕㐳 80.7 mm㧔㫧1.5㧘N=3㧕ߢ޽ߞߚ‫ޕ‬ฦ୘૕߆ࠄ♖Ꮍࠍ៰಴ߒ㧘♖Ꮍߩ㐳ߐ㧔Ꮐฝߩ♖Ꮍ߇≹วߔࠆߣߎࠈ߹ߢ㧕ߣ⋥ᓘ㧔ฝ஥ߩᦨ߽⢈ᄢߒߡ޿ࠆ▎ᚲ㧕ࠍ⸘᷹ߒߚ‫ߚ߹ޕ‬㧘↢ᱺ⣼૕ᜰᢙ㧔㧔♖Ꮍ㊀㊂㧛૕㊀㧕100㧕ࠍ▚಴ߔࠆߚ߼㧘૕㊀ߣ♖ᎽߩḨ㊀㊂ࠍ࠺ࠫ࠲࡞ᄤ⒊ߢ⸘᷹ߒߚ‫៰ޕ‬಴ߒߚ♖Ꮍߪ㧘0.1M ῂ㉄✭ⴣᶧࠍ฽߻ 4㧑ࡎ࡞ࡓࠕ࡞࠺ࡅ࠼᳓ṁᶧߢ࿕ቯࠍⴕߞߚ‫ޕ‬࿕ቯᮡᧄߪࡄ࡜ࡈࠖࡦߦ൮ℂߒ㧘ࡋࡑ࠻ࠠࠪ࡝ࡦߣࠛࠝࠪࡦߢᨴ⦡ߒߚ⚵❱ᮡᧄࠍ૞ᚑᓟ㧘♖Ꮍౝㇱߩᒻᘒࠍ㗼ᓸ㏜ߢⷰኤߒߚ‫ޕ‬⴫䋮㪈䇭♖Ꮍ䈱ᄖᒻ⸘᷹䋨㫄㫄䋩♖Ꮍ 䈱㐳䈘䋨ฝ䋩♖Ꮍ䈱⋥ᓘ䋨ฝ䋩↢ᱺ⣼૕ᜰᢙ

㊄㠦ḓ↥ዊဳ୘૕

㪈㪐㪅㪏㫧㪈㪅㪍

㪈㪅㪐㫧㪇㪅㪋

㪇㪅㪍㫧㪇㪅㪈

ઁ䈱ᴡᎹ↥ᄢဳ୘૕

㪊㪉㪅㪊㫧㪊㪅㪏

㪉㪅㪏㫧㪇㪅㪍

㪇㪅㪏㫧㪇㪅㪋

ઁ䈱ᴡᎹ↥ዊဳ୘૕

㪈㪌㪅㪇㫧㪊㪅㪇

㪇㪅㪋㫧㪇㪅㪉

㪇㪅㪉㫧㪇㪅㪉⚿ᨐ‫♖ޣ‬Ꮍߩᄖᒻ⸘᷹‫ޤ‬㊄㠦ḓ↥ዊဳ㓶୘૕ߣઁᴡᎹߩᄢဳ㓶୘૕ߦ߅ߌࠆ♖Ꮍߪ㧘޿ߕࠇ߽Ꮐฝߦಽጘߒߚ᫔⁁ߢ޽ࠅ㧘੃⊕⦡ࠍ๒ߒߡ޿ߚ㧔࿑㧝㧕‫ઁޕ‬ᴡᎹߩዊဳ㓶୘૕ߩ♖Ꮍߪ㧘ߎࠇࠄࠃࠅ߽⚦ߊ㧘ㅘ᣿ߥ⊕⦡ߢ޽ߞߚ‫ޕ‬㊄㠦ḓ↥୘૕ߩ♖Ꮍߦ߅ߌࠆᄖᒻߪ㧘㐳ߐ 20.3㫧1.8mm ߢ⋥ᓘ 1.9㫧0.4mmߢ޽ࠅ㧘ઁᴡᎹߩᄢဳ୘૕ߩ♖Ꮍ㧔㐳ߐ 31.4㫧4. 1mm㧘⋥ᓘ 2.8㫧0.5mm㧕ࠃࠅ߽ዊߐ޿߇㧘ઁᴡᎹዊဳ㓶୘૕ߩ♖Ꮍ㧔㐳ߐ 15. 0㫧3.0mm㧘⋥ᓘ 0.4㫧0.2mm㧕ࠃࠅ߽ᄢ߈޿ߎߣࠍ␜ߒߚ83

㊄㠦ḓߦ↢ᕷߔࠆࠝࠗࠞࡢߩ♖Ꮍߦ߅ߌࠆᚑᾫ㊄㠦ḓߦ↢ᕷߔࠆࠝࠗࠞࡢߩ♖Ꮍߦ߅ߌࠆᚑᾫ̪ࡄࡢ࡯ࡐࠗࡦ࠻ࠍශ೚ߔࠆ‫ޕ‬㧔⴫1㧕‫ޕ‬ห᭽ߦ↢ᱺ⣼૕ᜰᢙߪ㧘㊄㠦ḓ↥࿕૕ߢߪ0.5㧔r0.2㧕ߢ㧘ઁᴡᎹߩᄢဳ࿕૕ߩ0.7
㧔r0.3㧕ࠃࠅ߽ዊߐ޿߇᦭ᗧߥᏅߪ⷗ࠄࠇߕ㧔㨠ᬌቯ㧘p㧪0.05㧕㧘ઁᴡᎹዊဳ࿕૕ߩ0.2
㧔r0.2㧕ࠃࠅ߽ᄢ߈޿୯ࠍ␜ߒߚ‫ޕ‬BA

࿑1. ࠝࠗࠞࡢ㓶୘૕߆ࠄ៰಴ߒߚ♖Ꮍߩ౮⌀㧔⣻㕙㧕㧚A㧦㊄㠦ḓ↥ߩዊဳ୘૕ߩ♖Ꮍ㧚B㧦ઁᴡᎹ㧔የ↰Ꮉ㧕↥ߩᄢဳ୘૕ߩ♖Ꮍ㧚(⋡⋓ࠅ1mm)㧚

A

B

SL

SM

50㱘m

20㱘m

CDSL

SM

100Ǵm

20㱘m

E

F

SL

50㱘m

20㱘m

࿑2㧚♖Ꮍߩ㗼ᓸ㏜౮⌀㧚AߣB㧦㊄㠦ḓ↥ߩዊဳ୘૕㧚CߣD㧦ઁᴡᎹ㧔የ↰Ꮉ㧕↥ߩᄢဳ୘૕㧚EߣF㧦ઁᴡᎹ㧔ኙ↰Ꮉ㧕↥ߩዊဳ୘૕㧚
A,C,Eߪૐ୚₸㧘B,D.Fߪߘߩ৻ㇱࠍ᜛ᄢߒߚ౮⌀㧚SL㧦♖ዊྙ㧘SM㧦♖⚦⢩㧚84㜞 ự࡮ᄢ ୖ‫♖ޣ‬Ꮍߩౝㇱᒻᘒ‫ޤ‬ࠝࠗࠞࡢߩ♖Ꮍߪ᣿⍎ߥ♖⚦▤᭴ㅧ߇⷗ࠄࠇߕ㧘ᄙᢙߩ♖ዊ⪲ߢ඙ಽߐࠇࠆ lobule type ߢ޽ߞߚ㧔࿑㧞㧕‫ޕ‬㊄㠦ḓ↥୘૕ߩ♖Ꮍߢߪ㧘♖ዊྙߢ඙ಽߐࠇࠆౝㇱߦ㧘ዊဳߢಝ❗ߐࠇߚᩭࠍᜬߟ♖⚦⢩߇ᄙᢙሽ࿷ߒߡ޿ࠆߩ߇ⷰኤߐࠇߚ㧔࿑㧞A㧘B㧕‫ઁޕ‬ᴡᎹߩᄢဳ୘૕ߩ♖Ꮍߢ߽ห᭽ߢ㧘♖ዊྙౝߦᄙᢙߩ♖⚦⢩߇ⷰኤߐࠇߚ㧔࿑㧞C㧘D㧕‫৻ޕ‬ᣇ㧘ઁᴡᎹዊဳ୘૕ߩ♖Ꮍߦߪ㧘♖ዊྙߩሽ࿷ߪ⼂೎ߐࠇࠆ߽ߩߩ㧘᣿⍎ߥ♖⚦⢩ߩሽ࿷ߪ⹺߼ࠄࠇߥ߆ߞߚ㧔࿑㧞E㧘F㧕‫ޕ‬⠨ኤߎࠇ߹ߢߩ⎇ⓥߢ㧘ᄢಽ⋵ౝߩઁߩᴡᎹߩࠝࠗࠞࡢ㧔Zacco platypus㧕㓶୘૕ߢߪ㧘ᄙߊ߇૕㐳 100mm એ਄ߦ㆐ߒߡߪߓ߼ߡ࿕᦭ߩᕈᓽ㧔ᇕᆪ⦡ߣㅊᤊߩ⊒⃻㧘ዥ㠈ߩિ㐳㧕ࠍ␜ߔ߇㧘㊄㠦ḓߦ↢ᕷߔࠆߦ୘૕ߢߪ㧘૕㐳 100mm એਅߦ߽߆߆ࠊࠄߕ࿕᦭ߩᕈᓽࠍ␜ߔߎߣࠍ᣿ࠄ߆ߦߒߚ㧔㜞ự㨯ᄢୖ㧘2009a㧕‫ߚ߹ޕ‬㧘㊄㠦ḓ↥ߩ୘૕ߦ߅ߌࠆ㠦ߩ㓉⿠✢㑆㓒ߪ㧘ઁᴡᎹߩ୘૕ࠃࠅ߽᦭ᗧߦᐢߊ㧘቟ቯߒߡᚑ㐳ߒߡ޿ࠆߎߣࠍ␜ໂߒߡ޿ߚ㧔ᄢୖ㧘2009㧕‫ߦࠄߐޕ‬㧘㊄㠦ḓߢߪ౻ቄߦ↥ෆⴕേ߇⿠ߎࠆߎߣ߽ⷰኤߒߡ޿ࠆ㧔㜞ự㨯ᄢୖ㧘2009b㧕‫⎇ᧄޕ‬ⓥߪ㧘㊄㠦ḓߩ㓶୘૕߇ᚑᾫߒߚ♖Ꮍࠍᜬߟߎߣࠍ᣿ࠄ߆ߦߒ㧘ߎࠇࠄᄖᒻߦ߅ߌࠆᕈᓽߩ⊒⃻߿౻ቄߩ↥ෆⴕേߣ޿߁․ᓽࠍⵣઃߌߚ‫ޕ‬ᣧߊᚑᾫߔࠆߣ޿߁․ᓽߪ㧘Ᏹߦ᷷ᴰ᳓߇ᵹ౉ߒ㧘ᐕਛ⚂30͠ߦ଻ߚࠇߡ޿ࠆ᳓ၞ߇ሽ࿷ߔࠆ㊄㠦ḓߩⅣႺࠍ෻ᤋߒߡ޿ࠆߣផ᷹ߐࠇߚ‫ޕ‬㝼㘃ߢߪ㧘৻⥸ߦᚑ㐳ߩㅦ޿୘૕߶ߤᣧߊᚑᾫߔࠆߣ޿ࠊࠇߡ޿ࠆ㧔Alm㧘1959㧕‫ࠞࠗࠝޕ‬ࡢߩ↥ෆᦼߪ㧘ㅢᏱ 6 ᦬㨪8 ᦬㧔ਛ᧛㧘1952㧧᳓㊁߶߆㧘1958㧧᳓ญ㨯ᯫጊ㧘1969㧕ߢ㧘↥ෆ㐿ᆎߩ᳓᷷߇ 23͠ߢ㧘⋓ᦼߩ᳓᷷߇ 25͠ߣߐࠇߡ޿ࠆ(૒⮮߶߆㧘1996)‫ޕ‬᳓ญ࡮ᯫጊ㧔1969㧕ߪ㧘㓶୘૕ߩ߁ߜ 6 ᦬㨪8 ᦬ߦ 3 ᚽ㝼ߣ 2 ᚽ㝼ߩඨᢙ߇ᚑᾫߒ㧘2 ᚽ㝼ߩᱷࠅ߇ᰴߩᐕߦᚑᾫ
ߔࠆߣߒߡ޿ࠆ‫ޕ‬᷷ᥦߥ᳓ၞࠍᜬߟ㊄㠦ḓߢߪ㧘ࠝࠗࠞࡢߩ↥ෆ᧦ઙ߇ᐕ㑆ࠍㅢߓߡᢛ޿㧘Ᏹߦ↥ෆ߇ⴕࠊࠇࠆน⢻ᕈ߇㜞ߊ㧘౻ቄߦ߽ᚑ㐳ࠍ⛯ߌ㧘 1 ᚽᧂḩߢᚑᾫߔࠆߎߣ߽⠨߃ࠄࠇࠆ‫ޕ‬ᕈᚑᾫߩᦼ㑆ࠍ᳿ቯߔࠆߦߪ㧘⹦⚦ߥ↢ᘒ⺞ᩏߣ㘺⢒ታ㛎ߥߤߢ⏕߆߼ࠆᔅⷐ߇޽ࠆ‫ޕ‬ෳ⠨ᢥ₂1㧕㜞ự⑲᮸࡮ᄢୖ㋕਽(2009a)㧦㊄㠦ḓߦ↢ᕷߔࠆࠝࠗࠞࡢ(Zacco platypus)ߩᒻᘒ⊛․ᓽΣ㧚ᕈᚑᾫߣ㠦㓉⿠✢㑆㓒ߦߟ޿ߡ㧚ᄢಽᄢቇᢎ⢒⑔␩⑼ቇㇱ⎇ⓥ♿ⷐ㧘╙ 31 Ꮞ㧘╙ 1 ภ㧘51-55㧚
2㧕㜞ự⑲᮸࡮ᄢୖ㋕਽(2009b)㧦㊄㠦ḓߦ↢ᕷߔࠆࠝࠗࠞࡢ(Zacco platypus)ߩ౻ቄߦ߅ߌࠆ↥ෆⴕേ㧚ᄢಽᄢቇᢎ⢒⑔␩⑼ቇㇱ⎇ⓥ♿ⷐ㧘╙ 31 Ꮞ㧘╙ 2 ภ㧘115-118㧚3㧕੖ච፲ቁᄦ㧔1968㧕㧦ᶏ↥ෆ⢝↢⎬㛽㝼㘃ࠛ࠱ࡔࡃ࡞ Sebastes Taczanowskii(Steindachner)ߩ↢ᘒቇ⊛⎇ⓥ㧦Σ㧚♖Ꮍߩቄ▵⊛ᄌൻ ർᶏ㆏ᄢቇ᳓↥ቇㇱ⎇ⓥᒵႎ㧘19 Ꮞ㧘1 ภ㧘19-26㧚
4㧕ᨋാᄦ㧔1970㧕㧦ࠬ࠭ࠠ♖Ꮍߩᚑᾫㆊ⒟ߦߟ޿ߡ㧚㝼㘃ቇ㔀⹹㧚18 Ꮞ㧘1 ภ㧘39-50㧚
5㧕Abe, T. and Munehara, H. (2007)㧦 Histological structure of the male reproductive organs
and spermatogenesis in a copulating sculpin, Radulinopsis taranetzi (Scorpaeniformes㧦
Cottidae). Ichthyological Research, 54, 137-144.
6㧕ਛ᧛৻㓶(1952)㧦ජᦛᎹ↥ࠝࠗࠞࡢ㧔Zacco platypus㧕ߩ↢ᵴผ㧔ⅣႺ‫ޔ‬㘩ᕈ‫↥ޔ‬ෆ‫ޔ↢⊒ޔ‬ᚑ㐳౔ઁ㧕ਗߦߘߩṪᬺ Bull. Freshwater Fish Lab. Vol. 1 No. 1 ᷆᳓඙᳓↥⎇ⓥᚲᬺ❣ 3 ภ㧚
7㧕᳓ญᙗ຦࡮ᯫጊ⟵ᄦ(1969)㧦ࠝࠗࠞࡢ㧘Zacco platypus (Temminck and Schlegel)ߩ❥ᱺ㧙Σ㧚⤦㠈ߦ߅ߌࠆᕈᓽߣᚑᾫ㧚㝼㘃ቇ㔀⹹㧘╙ 16 Ꮞ㧘╙ 1 ภ㧘17-23㧚

85㊄㠦ḓߦ↢ᕷߔࠆࠝࠗࠞࡢߩ♖Ꮍߦ߅ߌࠆᚑᾫ

8㧕᳓ญᙗ຦㧔1970㧕㧦ࠝࠗࠞࡢ㧘Zacco platypus (Temminck and Schlegel)ߩ❥ᱺ̆Τ㧚ෆߩ↢↥㧚㝼㘃ቇ㔀⹹㧘17 Ꮞ㧘4 ภ㧘173-178㧚
9㧕ᄢୖ㋕਽㧔2009㧕㧦㊄㠦ḓߦ↢ᕷߔࠆࠝࠗࠞࡢ㧔Zacco platypus㧕ߩᒻᘒ⊛․ᓽ㧚ᕈᚑᾫߣ㠦㓉⿠✢ߦߟ޿ߡ㧚ᣣᧄ㒽᳓ቇળ╙ 74 ࿁ᄢળ㧚
10㧕Alm, G. (1959): Connection between maturity, size and age in fishes. Rep. Inst. Freshwater
Res. 40, 5-145.
11㧕᳓㊁ାᒾ࡮Ꮉ㇊ㇱᶈ຦࡮ች࿾વਃ㇢࡮᫪ਥ৻࡮ఽ₹ᶈᙗ࡮ᄢਠ┥৻࡮ᣣਅㇱ᦭ା࡮ฎደ౎㊀ሶ
(1958)㧦Ꮉߩ㝼ߩ↢ᵴΣ㧚ࠦࠗ⑼ 4 ⒳ߩ↢ᵴผࠍਛᔃߦߒߡ㧚੩ㇺᄢቇℂቇㇱ↢ℂ↢ᘒቇળ⎇ⓥᬺ❣ೀⴕળ㧘25-27㧚
12㧕૒⮮ᢕᒾ࡮ᣂ੗⡸࡮ᚻፉජ㉿(1996)㧦ࠝࠗࠞࡢߩჇᱺߦ㑐ߔࠆ⎇ⓥ̆Τ㧔᳓᷷ߣ↥ෆⴕേ㧕㧚⟲㚍⋵᳓↥⹜㛎႐⎇ⓥႎ๔㧘╙ 2 ภ㧘39-42㧚

Morphological Characteristics of a Cyprinid, Zacco platypus,in the Lake Kinrin. Τ.
̆Maturation of Testis.̆
TAKAHAMA,Hideki and OKURA,Tetsuya

Abstract
Morphological characteristics of testes were investigated in Zacco
platypus collected from the Lake Kinrin (mean body length 84.8mm)
where was kept at about 30͠ flowing hot spring water, compared fromlarge (mean body length 118.6mm) and small individuals (mean bodylength 80.7mm) from the other rivers in the Oita Prefecture.

Testes(20.3mm in length and 1.9mm in diameter) of males from the Lake Kinrin
were smaller in size than ones (31.4mm in length and 0.4mm in diameter)of the large males from the other rivers but larger than ones (15.0mm inlength and 2.8mm in diameter) of small males.

Spermatogenesis wasobserved in the seminal lobules of testes both in the males from the Lake
Kinrin and ones of large individuals from the other river but not visible inthe seminal lobules of testes of small males.

Thus, early maturation wasconfirmed in the testes of small males from the Lake Kinrin.
䇼Key words‫  ޤ‬The Lake Kinrin, Zacco platypus, Maturation of Testis,
Seminal lobule, Spermatogenesis, Morphological characteristics