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首页> 外文期刊>Comparative biochemistry and physiology, Part B. Biochemistry & molecular biology >Ontogenetic changes in biochemical composition during larval and early postlarval development of Lepidophthalmus louisianensis,a ghost shrimp with abbreviated development
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Ontogenetic changes in biochemical composition during larval and early postlarval development of Lepidophthalmus louisianensis,a ghost shrimp with abbreviated development

机译：一种具有缩小发展的鬼魂虾类生物化学组合物的生物化学组合物的植入变化，具有缩写发展的幽灵虾

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摘要

Changes in growth and biochemical composition during the transition from egg through zoea to decapodid in the ghost shrimp, Lepidophiha/mas loulsianensis (Schmitt, 1935), were documented in terms of dry weight, lipid classes, fatty acid composition, and carbon to nitrogen (C:N) ratios. Larvae of the ghost shrimp were mass-reared in the laboratory (280C; 2O%o 5) from hatching to the decapodid stage. latroscan lipid class analysis revealed that major lipid classes in recently produced eggs were phospholipids (80.8 ± 1.30 o) and triglycerides (16.0 ± 1.10 o), which decreased during the incubation period. Polar lipids (zoea I: 77.4 + 1.7~ o: zoea II: 77.5 ± 2.10 o; decapodid: 80.0 ± 1.7%) and neutral lipids, of which free fatty acids (zoea 1:10.5 + 2.70 o; zoea II: 13.1 + 5.20u; decapodid: 7.8 ± 2.10 o) were dominant, represented the major lipid classes in the zoeal and decapodid stages. Triglycerides were present in small amounts. The predominant fatty acids of L. loulsianensis eggs, zoeae and decapodids were palmitic (16:0), stearic (18:0), eicosapentaenoic (20:5o3), oleic (18:1w9), and arachidonic (20:4o6). Elemental composition of eggs, larvae, and the decapodid stage revealed conspicuous changes in the C:N ratio, with N being relatively stable during larval development but C decreasing during the decapodid stage. These data suggest independence of newly hatched L. loulsianensis on external energy resources. This combined with the ability to incorporate saturated fatty acids into polar lipids provides a selective advantage for fast development of new tissue and growth, characteristic of decapod crustacean larvae with lecithotrophic development. Published by Elsevier Science Inc.
机译：在从鸡蛋通过Zoea到鬼魂虾的过渡期间生长和生化组成的变化，Lepidophiha / Mas Loulsianensis（Schmitt，1935），以干重，脂肪类，脂肪酸组成和碳对氮气（ C：n）比率。将鬼魂虾的幼虫在实验室（280℃; 2O％O 5）中饲养，从阴影到脱扎狄杜阶段。 Latroscan Lipid类分析显示，最近产生的卵中的主要脂质类是磷脂（80.8±1.30 O）和甘油三酯（16.0±1.10 o），在潜伏期期间降低。极性脂质（Zoea I：77.4 + 1.7〜O：Zoea II：77.5±2.10 o;甲板阳氨酸：80.0±1.7％）和中性脂质，其中游离脂肪酸（Zoea 1：10.5 + 2.70 O; Zoea II：13.1 + 5.20U;脱氮化剂：7.8±2.10℃）占主导地位，代表了Zoeal和脱氮阶段的主要脂质类。甘油三酯少量存在。 L. Loulsianensis蛋，Zoeae和脱扎狄杜的主要脂肪酸是棕榈酸（16：0），硬脂酸（18：0），eicosapentaenoic（20：503），油酸（18：1W9）和arachidonic（20：406）。卵子，幼虫和脱氮阶段的元素组成显示C：N比的显着变化，n在幼虫发育期间相对稳定，但在脱扎狄杜阶段的C下降。这些数据表明新孵化的L. Loulsianensis对外部能源资源的独立性。这种结合将饱和脂肪酸掺入极性脂质的能力提供了快速发展新组织和生长的选择性优势，具有卵磷脂植物发育的脱像甲壳类动物幼虫的特征。由elestevier科学公司出版

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