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タイトル :Larval development of the oriental lancelet, Branchiostoma belcheri, in laboratory mass culture
著者 :Urata, Makoto
Yamaguchi, Nobuo
Henmi, Yasuhisa
刊行年月日 :2007-8
収録雑誌名 :Zoological Science
巻 :24
号 :8
開始ページ :787
終了ページ :797
要約(Abstract) :We are successfully maintaining a laboratory colony of the lancelet Branchiostoma belcheri bred in the laboratory. Based on living individuals in this mass culture, morphological characteristics from the seven-day larval to benthic juvenile stages have been studied. Most striking was that later larval development of B. belcheri showed great individual variation even in a rather stable culture environment. Metamorphosis first occurred on 60 days post fertilization (dpf) and was continuously observed throughout the present study up to 100 dpf. Morphological traits such as the number of primary gill slits and body size at the start of metamorphosis are apparently affected by culture condition. Body size measured in the largest individuals showed nearly linear growth at 0.087 mm/day. The variability found in larval development calls for caution when developmental stages and chronological ages are compared between populations. However, the developmental flexibility of this animal also raises the possibility that growth and sexual maturation could be controlled artificially in captivity.
URL :http://www.zoology.or.jp/
収録種別 :雑誌掲載論文
出版社(者) :Zoological Society of Japan
権利(Rights) :Zoological Society of Japan / 社団法人日本動物学会
備考 :Zoological Science Award (論文賞) 2008年度受賞論文
URI :http://hdl.handle.net/2298/11343
このアイテムの引用には次の識別子を使用してください: http://hdl.handle.net/2298/11343