2007年8月
Larval development of the oriental lancelet, Branchiostoma belcheri, in laboratory mass culture
ZOOLOGICAL SCIENCE
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- 巻
- 24
- 号
- 8
- 開始ページ
- 787
- 終了ページ
- 797
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.2108/zsj.24.787
- 出版者・発行元
- ZOOLOGICAL SOC JAPAN
We are successfully maintaining a laboratory colony of the lancelet Branchiostoma belched 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. belched 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.
- リンク情報
- ID情報
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- DOI : 10.2108/zsj.24.787
- ISSN : 0289-0003
- Web of Science ID : WOS:000251181300004