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Name
While tanuki are prominent in Japanese folklore and proverbs, they were not always clearly distinguished from other animals with a similar appearance. In local dialects, tanuki and mujina (狢, kyujitai: 貉) can refer to raccoon dogs or badgers. An animal known as tanuki in one region may be known as mujina in another region. In modern Tokyo standard dialect, tanuki refers to raccoon dogs and anaguma refers to badgers. Regional dishes known as tanuki-jiru ("tanuki soup") do not contain actual tanuki. Some northern, very rural communities may eat tanuki stew (tanuki shichuu).[2]
Originally, the kanji for tanuki, 狸 (kyujitai: 貍) was used to refer to other mid-sized mammals, mostly wild cats.[citation needed] Since wild cats live only in limited regions of Japan (e.g. Iriomote, Okinawa), the characters are believed to have begun being used to mean "raccoon dog" instead starting around the Japanese feudal era. This shift in meaning, along with the rarity of the raccoon dog outside Japan, may have contributed to confusion over the proper translation of tanuki into other languages.
In Japanese slang, tanuki gao ("raccoon dog face") can refer to a face that looks like that of the animal, or a person's facial expression of feigned ignorance.[3] By contrast, kitsune gao ("fox face") refers to people with narrow faces, close-set eyes, thin eyebrows, and high cheekbones.
Taxonomic disputes
Some debate exists in the scientific community regarding speciation between the other subspecies of raccoon dog and the Japanese subspecies in that due to chromosomal, behavioral, and weight differences, the Japanese raccoon dog could be considered a separate species[4] (i.e. Nyctereutes viverrinus rather than N. procyonoides viverrinus). The Japanese raccoon dog has a relatively smaller stomach and shorter fur of lesser insulation value than mainland raccoon dogs.[5]
Genetic analysis has confirmed unique sequences of mtDNA, classifying the Japanese raccoon dog as a distinct isolation species, based on evidence of eight Robertsonian translocations. The International Union for Conservation of Nature (IUCN) Canid Group's Canid Biology and Conservation Conference in September 2001 rejected the classification of the Japanese raccoon dog as a separate species, but its status is still disputed, based on its elastic genome.[6]
A not mutually exclusive position advanced by some researchers is that raccoon dogs of Japan could be further divisible into separate subspecies as N. p. procyonoides (hondo-tanuki) and N. p. albus (ezo-tanuki)
Conservation and exhibition
狸 | This section needs expansionwith: - Estimated figures for wild and captive populations
- Environmental concerns, if any exist
- More exhibition data, outside of the US, and with sources. You can help byadding to it. (February 2013)
|
The IUCN places the raccoon dog at "least concern" status due to the animal's wide distribution in Japan and abundant population, including as an introduced species throughout northeastern Europe. In many European countries, it is legal to hunt raccoon dogs, as they are considered a harmful and invasive species.
This species is rarely exhibited in zoological parks. For example, only two zoos accredited by the American Zoo and Aquarium Association – Zoo Atlanta in Atlanta, Georgia, and the Red River Zoo in Fargo, North Dakota – currently exhibit this species in the United States. The Hangzhou Zoo in China and the River Safari in Singapore also have Japanese raccoon dogs. In the UK, Chew Valley Animal park near Bristol in the South West of England has a breeding pair.
In folklore and tradition
Taxidermy of a Japanese raccoon dog, wearing waraji on its feet: This tanuki is displayed in a Buddhist temple in Japan, in the area of the folktale "Bunbuku Chagama".
Bake-danuki
"Tanuki" from Gazu Hyakki Yagyo by Sekien Toriyama
たぬきの生態
形態 | 体重3-6kg,季節差が大きく,晩秋に最大となる.尾長18cm程度を含む全長70-80cm,後肢長10-11cm,耳長4-5cm,性的二型はほとんど見られない.耳はやや丸く,目の回りに黒いマスクがあり,肩や足も黒い.毛色は薄いグレーから褐色または濃い灰色まで,バリエーションがある.歯は基本的にイヌと同じ3/3-1/1-4/4-2/3=42.足の指は5本だが,地面に付くのは4本(足跡はイヌと類似). |
生息環境 | 主な生息地は,都市郊外から里山・低山にかけての,ある程度人の手の加わった地域で,緑地が連続している里地里山の林縁部を好む.東京23区や名古屋市中心部などにも生息する一方,標高2000m級の亜高山にも生息する.個体群密度は「西高東低」で,北海道は少ないと思われる. |
食物 | おもに果実や昆虫などの無脊椎動物を食べる好機主義的雑食性.量的には植物食を中心として,春には草本植物も食べ,夏から秋にかけて昆虫やミミズなどが多い.カキやイチョウの果肉は秋の重要な食物.地域によっては魚や甲殻類,小型哺乳類,大型獣の死骸,残飯や生ゴミも食べる. |
繁殖 | 2-4月に交尾,受精可能期間は数日で,約2ヵ月の妊娠期間を経て,平均4-6頭を出産し,雌雄ともに子育てに参加する. |
社会性 | 基本的に一夫一妻で,社会構成単位のペアは通年行動をともにする.他個体への許容性が高く,毎日の餌付けなどで10頭を越える空間グループを形成することがある. |
感覚 | 臭覚および聴覚に優れていると思われる.視覚はあまり良くはないが,動くものは動かないものより捉えられる. |
運動能力 | 一芸に秀でていない代わりに,一応何でもこなす.木も登り,爪や指が掛かればフェンスも登ることができる.地面は体が通るくらいは掘り下げることができる.泳ぎも問題なく,狭いところを通り抜けることが得意. |
たぬきによる被害
被害をおよぼす作物の範囲 |
穀類 | ◎トウモロコシ ○コメ △デントコーン |
芋類 | ◎サツマイモ ○バレイショ ○ヤマイモ △タロイモ |
豆類 | ○ダイズ △エダマメ △ソラマメ △ラッカセイ |
果物 | ◎スイカ ◎温州ミカン ◎ブドウ ◎イチゴ ○メロン ○ナシ ○モモ ○ビワ △キンカン △キーウイ △イチジク △スモモ △カキ △リンゴ △ウメ △クリ △クワの実 |
野菜 | ○トマト ○キュウリ △キャベツ △カボチャ △タマネギ △ナス △ウリ ?食用菊 |
根菜 | ◎ミニニンジン △ダイコン |
その他 | ◎濃厚飼料(牧場・畜舎) △ヤマメ(養魚場) △ニワトリ(養鶏場) △鶏卵 △カモ ?シイタケ |
◎よく被害が起こる、○被害が起こる、△たまに起こる、?不明 |
同じ作物でも品種や出来によって甘いものは被害にあいやすい。 |