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1978年10月利用向阳红5号调查船对西太平洋14°00′-17°00′S、171°00′-174°00′E热带水域进行鱼类浮游生物调查。调查期间共采集到长体翻车鱼卵27粒和仔稚鱼11尾。长体翻车鱼卵集中分布于调查海域东南部的15°28.4′-16°17.3′S、172°43.8′-173°29.0′E海区,而仔稚鱼主要分布于调查海域东南部的15°28.4′-16°17.3′S、172°43.8′-173°29.0′E和西北部的14°29.0′S、171°48.4′E海域。鱼卵和仔稚鱼的密度分别为1-14粒/100m3和1-3尾/100m3。出现鱼卵和仔稚鱼分布海域的水温和盐度分别为25.72-26.22℃、35.10-35.32和25.72-27.02℃、34.80-35.50。鱼卵和仔稚鱼均出现在海洋锋面处。长体翻车鱼卵为圆球型、浮性、卵膜光滑、透明,卵子直径1.40-1.60mm(1.50±0.054mm,n=27),多油球,20-30个,其直径为0.06-0.16mm(0.10±0.064mm,n=27),卵黄均匀无龟裂。当胚胎发育到尾芽期,可数肌节20对,胚体背部和油球表面出现黑色素细胞分布,皮质体壳已初步形成。孵化前,皮质体壳的表面布满了浓密、细微的小泡,唯尾部和胸鳍外,整个胚体被体壳包住。仔鱼的肛前长为1.20mm(全长1.80mm,体长1.68mm)时,体壳已退化脱尽,肛前长为3.20mm(体长4.00mm)时,鱼体上的部分棘开始退化、变小,尾鳍完全退化、消失,尾锥体萎缩成瘤状,腹部的棘与棘之间出现许多锯齿状小刺。卵子的形状和大小、卵膜的结构、油球的数量、黑色素的分布以及体棘的形状和数量等是区别于其它形目鱼类的卵子和仔稚鱼的依据。
In October 1978, a survey of fish plankton in the tropical waters of the western Pacific at 14 ° 00’-17 ° 00’S, 171 ° 00’-174 ° 00’E was conducted using the survey ship Xiangyang-Hong-5. During the investigation, a total of 27 pieces of long-tipped mullet eggs and 11 juveniles of larvae were collected. Long-tipped dolphin eggs were distributed mainly in the sea area of 15 ° 28.4’-16 ° 17.3’S, 172 ° 43.8’-173 ° 29.0’E in the southeastern part of the surveyed sea area, while larvae were mainly distributed in the southeastern part of the surveyed sea area ° 28.4’-16 ° 17.3’S, 172 ° 43.8’-173 ° 29.0’E and the northwestern 14 ° 29.0’S, 171 ° 48.4’E waters. The density of fish eggs and larvae were 1-14 grains / 100 m3 and 1-3 grains / 100 m3, respectively. The water temperature and salinity of fish eggs and larvae were 25.72-26.22 ℃, 35.10-35.32 and 25.72-27.02 ℃, 34.80-35.50 respectively. Fish eggs and larvae appear at the front of the ocean. The long-bodied skip mullet eggs are spherical, floating, and the egg membrane is smooth and transparent with an egg diameter of 1.40-1.60mm (1.50 ± 0.054mm, n = 27), more oil balls, 20-30 and a diameter of 0.06 -0.16mm (0.10 ± 0.064mm, n = 27), egg yolk without cracking. When the embryo develops into the caudal bud, 20 pairs of sarcomeres can be counted. The melanocytes are distributed on the back of the embryos and the surface of the oil globules. The cortical shell has been initially formed. Before hatching, the surface of the cortical shell was covered with dense, subtle vesicles, only tail and pectoral fin, the entire embryo body is surrounded by body shell. The larvae had an anterior anal length of 1.20 mm (total length of 1.80 mm and body length of 1.68 mm). When the body shell had degenerated and disappeared and the anterior length of the anus was 3.20 mm (body length 4.00 mm), parts of the fish began to degenerate , Smaller, caudal fin completely degenerated, disappeared, tail cone atrophy into the tumor-like, abdomen between the spines and spines many jagged spines. The shape and size of the egg, the structure of the egg membrane, the number of oil globules, the distribution of melanin and the shape and number of body spines are the basis for distinguishing eggs and larvae from other halibut fish.