Embryonic and early larval development of Florida pompano, Trachinotus carolinus

IF 2.3 3区 农林科学 Q2 FISHERIES
Ashley N. Morgan, Susan B. Fogelson, Paul S. Wills, Tracy Mincer, Sahar Mejri, Annie Page
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Abstract

The Florida pompano, Trachinotus carolinus, is an ideal species for commercial aquaculture because of its rapid growth, tolerance to a range of environmental parameters, and high demand in the seafood market. This study detailed embryonic and early larval development of this species. Florida pompano followed similar developmental sequences to those observed in other marine teleosts, and embryos hatched between 22 and 28 h post-fertilization. Significant brain lobe differentiation occurred prior to hatching. Pectoral fins were functional within 1-day post-hatch (dph). Substantial eye development occurred within 3 dph, indicating visual acuity prior to the onset of exogenous live feeding. Intestinal segments were differentiated by 3 dph, and rotifers were seen in the digestive tract by 4 dph. Digestive functions were limited through the first 7 dph because of the absence of functional gastric glands and gastric mucous cells in the rudimentary stomach, lipid vacuoles in the anterior intestines, and the persistence of acidophilic supranuclear vesicles in the posterior intestines. Within 7 dph, the pharyngeal arches differentiated, and hematopoietic tissue and mesonephric tubules were visible in the larval kidney. Their rapid larval development and organogenesis are additional factors that make Florida pompano an ideal species for aquaculture production and should encourage continued efforts toward commercialization.

Abstract Image

佛罗里达鲳鱼(Trachinotus carolinus)的胚胎和早期幼虫发育
佛罗里达鲳鱼(Trachinotus carolinus)生长迅速,对各种环境参数的耐受性强,海产品市场需求量大,因此是商业水产养殖的理想物种。本研究详细介绍了该物种的胚胎和早期幼体发育情况。佛罗里达鲳鱼的发育顺序与其他海洋远洋鱼类相似,胚胎在受精后22至28小时孵化。胚胎在受精后 22 至 28 小时之间孵化。孵化前脑叶出现明显分化。胸鳍在孵化后 1 天(dph)内开始发挥作用。眼睛在孵化后 3 dph 内大量发育,表明在开始外源活体饲喂之前就具有视觉敏锐度。肠段在孵化后 3 dph 开始分化,消化道在孵化后 4 dph 开始出现轮虫。在最初的 7 dph,消化功能受到限制,因为原胃中没有功能性胃腺和胃粘膜细胞,前肠中有脂质空泡,后肠中持续存在嗜酸性核上囊泡。在 7 dph 内,咽弓分化,幼体肾脏中可见造血组织和中肾小管。佛罗里达鲳鱼幼体发育和器官形成速度快,是水产养殖生产的理想物种,应鼓励继续努力实现商业化。
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来源期刊
CiteScore
5.90
自引率
7.10%
发文量
69
审稿时长
2 months
期刊介绍: The Journal of the World Aquaculture Society is an international scientific journal publishing original research on the culture of aquatic plants and animals including: Nutrition; Disease; Genetics and breeding; Physiology; Environmental quality; Culture systems engineering; Husbandry practices; Economics and marketing.
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