| 黄、渤海区不同生态类型鱼卵卵膜和受精孔区亚显微形态 |
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| 引用本文： | 卞晓东,万瑞景,金显仕,张秀梅,马骞.黄、渤海区不同生态类型鱼卵卵膜和受精孔区亚显微形态[J].水产学报,2016,40(5):689-702. |
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| 作者姓名： | 卞晓东 万瑞景 金显仕 张秀梅 马骞 |
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| 作者单位： | 1. 中国水产科学研究院黄海水产研究所,农业部海洋渔业可持续发展重点实验室,山东省渔业资源与生态环境重点实验室,山东青岛266071;青岛海洋科学与技术国家实验室,海洋渔业科学与食物产出过程功能实验室,山东青岛266071;2. 中国海洋大学水产学院,山东青岛,266003 |
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| 基金项目： | 国家重点基础研究发展计划(2015CB453302);国家自然科学基金(31272667);山东省泰山学者专项(ts200749070) |
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| 摘 要： | 黄、渤海区分布的硬骨鱼类鱼卵几乎涵盖了所有鱼卵生态类型。本研究借助扫描电镜观察技术对近年来黄、渤海渔业资源监测调查期间采集的15种不同生态类型鱼卵卵膜和受精孔区亚显微形态特征进行观察,以阐明其亚显微结构并总结提炼可用于鱼卵形态分类的特征,同时将相应鱼种产卵场环境因子引入到卵膜形态特征的认识中,以揭示其生境适应性。结果显示不同生态类型或不同鱼种卵膜形态不尽相同,浮性鱼卵和口含鱼卵卵膜较薄,沉性鱼卵和具卵膜丝鱼卵卵膜较厚;浮性鱼卵卵膜表面壁孔密度、卵膜外表面呈现的蚀刻或特殊结构以及受精孔形状类型,沉性鱼卵卵膜黏膜层表面结构、受精孔形状类型,具卵膜丝鱼卵卵膜丝数量、着生位置及受精孔形状类型,口含鱼卵受精孔区形状及周边附着丝数量等均可用于鱼卵形态分类。鱼卵卵膜和受精孔区亚显微结构差异与鱼种系统分类地位、产卵场环境和地理分布区相关联。鱼卵卵膜表面结构可以作为区分鱼类科或属的性状,卵膜壁孔密度、表面呈现的蚀刻或奇异结构是鱼卵形态分类的重要依据;受精孔结构则一般具有物种特异性。卵膜结构与厚度可反映鱼卵对不同生境的适应性,而卵膜表面的许多特殊结构和装饰被认为是鱼卵应对产卵场环境的保护和适应性策略。本研究将为黄、渤海区硬骨鱼类早期生活史阶段个体发生和鱼卵形态分类研究积累基础资料。
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| 关 键 词： | 鱼卵 卵膜 受精孔 亚显微形态 生态类型 生境适应性 |
| 收稿时间： | 2015/8/12 0:00:00 |
| 修稿时间： | 2016/2/29 0:00:00 |
Morphological diversities in envelope surface and micropyle of marine teleosts eggs with different ecological types in the Bohai Sea and the Yellow Sea |
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| BIAN Xiaodong,WAN Ruijing,JIN Xianshi,ZHANG Xiumei and MA Qian.Morphological diversities in envelope surface and micropyle of marine teleosts eggs with different ecological types in the Bohai Sea and the Yellow Sea[J].Journal of Fisheries of China,2016,40(5):689-702. |
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| Authors: | BIAN Xiaodong WAN Ruijing JIN Xianshi ZHANG Xiumei and MA Qian |
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| Affiliation: | Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Key Laboratory for Fishery Resources and Eco-environment, Shandong Province, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China,Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Key Laboratory for Fishery Resources and Eco-environment, Shandong Province, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China,Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Key Laboratory for Fishery Resources and Eco-environment, Shandong Province, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China,College of Fisheries, Ocean University of China, Qingdao 266003, China and Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Key Laboratory for Fishery Resources and Eco-environment, Shandong Province, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China |
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| Abstract: | Marine teleosts eggs distributed in the Yellow Sea and the Bohai Sea cover almost all the egg ecological types. Scanning electron microscope (SEM) observation was conducted to examine the ultrastructure of external egg membrane and micropyle of the 15 species with different egg ecological types which have been collected during the fisheries resource surveys in recent years. Taxonomic diagnostic ultrastructures have been accumulated, also habitat suitability of some related ultrastructures have been discussed. Current SEM studies have demonstrated that ultrastructure of the external egg membrane varies among egg ecological types or even among species. The external egg membrane of the floating eggs and mouth-breeding eggs was thin, but was thick in the demersal eggs and the eggs with adhesive egg filaments. The pores distribution density, sculptured patterns and peculiar elaborations of the external egg membrane and type of the micropyle in the floating eggs; fine structure of the external egg membrane and type of the micropyle in the demersal eggs; number and location of membrane thread or filament of the external egg membrane and type of the micropyle in the adhensive eggs; number and arrangement of the filaments and surface ridges in the micropyle region in the mouth-breeding eggs could be used as the diagnostic characters in taxonomy of fish eggs. Untrastructural differences in envelope surface and micropyle between species were associated with its systematic groups, spawning environment and geographic differences. Envelope surface ultrastructures were considered to be taxonomically useful features for identifying fish eggs to the family or genus level, with the pores distribution density, sculptured patterns and peculiar elaborations of the external egg membrane may be possible to assign the eggs to a species. While morphology of the micropyle was usually species-specific. Egg envelope structure and thickness of various teleosts often reflect the ecological challenges a species is faced with during its embryonic life stages. The sculptured patterns and peculiar elaborations on the outer egg membrane were considered as biological response to different habitat environments. The present study would accumulate basic data on ontogeny and morphological classification features during its embryonic life stages of the teleost fishes distributed in the Yellow Sea and the Bohai Sea. |
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| Keywords: | fish eggs envelope micropyle ultrastructure ecological type habitat suitability |
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