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飼育条件下におけるタイマイの繁殖生態


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Title: 飼育条件下におけるタイマイの繁殖生態
Other Titles: Reproductive ecology of the hawksbill turtle Eretmochelys imbricata in captivity
Authors: 小林, 真人 / 奥澤, 公一 / 征矢野, 清 / 與世田, 兼三
Authors (alternative): Kobayashi, Masato / Okuzawa, Koichi / Soyano, Kiyoshi / Yoseda, Kenzo
Issue Date: Nov-2010
Publisher: 日本水産学会 / The Japanese Society of Fisheries Science
Citation: 日本水産学会誌, 76(6), pp.1056-1065; 2010
Abstract: 飼育条件下でのタイマイの繁殖生態を明らかにするため,2006 年から 2009 年にかけて交尾と産卵行動,産卵数,産卵回数,ふ化率を調査した。ビデオカメラで交尾や産卵行動を観察した結果,交尾時間は 50~150 分,交尾から初回産卵までの日数は 29.6±3.4 日であった。産卵は雌 4 頭が合計 16 回行い,産卵数と産卵回数は,135.9±25.2 個と 3.5±0.7 回であり,既報の野生タイマイの事例と比較して大差はなかった。ふ化率は野生個体よりも低かったが,ふ化仔ガメの直甲長と体重は野生個体とほぼ一致した。 / In order to reveal the reproductive ecology of captive hawksbill caught from the wild, we investigated the mating and nesting behavior, clutch size, number of clutches and hatching rate from 2006 to 2009. We used a video camera system in order to determine the date and time of mating and nesting. Mean mating duration ranged from 50 to 150 minutes, and the period from mating to the 1st nesting was 29.6±3.4 days. As for nesting, 4 females nested a total of 16 times between 2006 and 2009. Mean clutch size and number of clutches were 135.9±25.2 eggs and 3.5±0.7 clutches, respectively. These results closely correlated with data from wild populations. Hatching rate of captive eggs was markedly lower compared to that of wild eggs. However, the straight carapace length and body weight of hatchlings in captivity were comparable to those of the wild ones.
Keywords: ウミガメ / 交尾 / 産卵 / 飼育 / タイマイ / 繁殖
URI: http://hdl.handle.net/10069/26621
ISSN: 00215392
DOI: 10.2331/suisan.76.1056
Rights: Copyright (c) 2011 公益社団法人 日本水産学会
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/26621

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