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核心技术专利：CN118964589B侵权必究

核心技术专利：CN118964589B侵权必究

Biol Bull. 1973 Feb;144(1):1-11. doi: 10.2307/1540143.

Echinaster echinophorus off the west coast of Florida was observed to spawn, from early April to late July, two different egg types: one type is pelagic, brown to black in color and 1.0-1.3 mm in diameter, while the second is bright orange, ranges from 0.84 to 0.88 mm in diameter and settles immediately to the substratum after spawning. 2. The present study reports on external morphogenesis of Echinaster eggs of the second type. 3. Cleavage stages occurred rapidly at the laboratory temperature of 25° C with the gastrula being reached 24 hours after fertilization. By 48 hours a modified brachiolaria develops with 4 larval arms and a central sucker. Folding of the preoral lobe toward the oral surface at 7 days of growth is reported for the first time in Echinaster. 4. A chronology of larval and juvenile development is presented. 5. Larval growth rates expressed as lengths (mm) as well as juvenile growth rates expressed as ray lengths (mm) and wet weights (mg) are presented.

在佛罗里达州西海岸外观察到，刺冠海星（Echinaster echinophorus）在4月初至7月末会产出两种不同类型的卵：一种是浮游性的，颜色从棕色到黑色，直径为1.0 - 1.3毫米；另一种是亮橙色，直径在0.84至0.88毫米之间，产卵后立即附着于底层。2. 本研究报告了第二种类型的刺冠海星卵的外部形态发生过程。3. 在25°C的实验室温度下，卵裂阶段迅速发生，受精后24小时发育至原肠胚。到48小时时，发育出具有4条幼虫臂和一个中央吸盘的改良短腕幼虫。在刺冠海星中首次报道了生长7天时口前叶向口面折叠的情况。4. 给出了幼虫和幼体发育的时间顺序。5. 呈现了以长度（毫米）表示的幼虫生长速率以及以腕长度（毫米）和湿重（毫克）表示的幼体生长速率。

Biol Bull. 1973 Feb;144(1):1-11. doi: 10.2307/1540143.

Echinaster echinophorus off the west coast of Florida was observed to spawn, from early April to late July, two different egg types: one type is pelagic, brown to black in color and 1.0-1.3 mm in diameter, while the second is bright orange, ranges from 0.84 to 0.88 mm in diameter and settles immediately to the substratum after spawning. 2. The present study reports on external morphogenesis of Echinaster eggs of the second type. 3. Cleavage stages occurred rapidly at the laboratory temperature of 25° C with the gastrula being reached 24 hours after fertilization. By 48 hours a modified brachiolaria develops with 4 larval arms and a central sucker. Folding of the preoral lobe toward the oral surface at 7 days of growth is reported for the first time in Echinaster. 4. A chronology of larval and juvenile development is presented. 5. Larval growth rates expressed as lengths (mm) as well as juvenile growth rates expressed as ray lengths (mm) and wet weights (mg) are presented.

在佛罗里达州西海岸外观察到，刺冠海星（Echinaster echinophorus）在4月初至7月末会产出两种不同类型的卵：一种是浮游性的，颜色从棕色到黑色，直径为1.0 - 1.3毫米；另一种是亮橙色，直径在0.84至0.88毫米之间，产卵后立即附着于底层。2. 本研究报告了第二种类型的刺冠海星卵的外部形态发生过程。3. 在25°C的实验室温度下，卵裂阶段迅速发生，受精后24小时发育至原肠胚。到48小时时，发育出具有4条幼虫臂和一个中央吸盘的改良短腕幼虫。在刺冠海星中首次报道了生长7天时口前叶向口面折叠的情况。4. 给出了幼虫和幼体发育的时间顺序。5. 呈现了以长度（毫米）表示的幼虫生长速率以及以腕长度（毫米）和湿重（毫克）表示的幼体生长速率。