Under light microscope, the egg is an oblated and agglutinated demersal with a narrow perivitelline space; eggs ranged in diameter from 1.95 to 2.38 mm with a mean of 2.18 ± 0.03 mm; their membrane are smooth and they have 5 to 7 cannular keratose egg-filaments; the oil globules are multiple, ranged in diameter from 0.05 to 0.50 mm and in number from 7 to 145 with a mean of 28±2, the position of them migrate during embryonic development; the yolks are ivory-white with no segments, ranged in diameter from 1.00 to 2.30 mm with a mean of 1.90 ± 0.03 mm; the development phases of the embryo are variable. So they were identified as the eggs of one Beloniformes.

在光學顯微鏡下：卵呈微扁圓形，卵徑1.95~2.38mm久久三级片精品区，粘著沉性国语对白人人操,人人曰；卵黃間隙較窄，卵黃囊呈乳白色欧美精品久久久久久久久，無龜裂女女激情毛片；卵膜平滑，在其表面有5~7根細長角質(zhì)管狀卵膜絲亚洲人人一区二区三区；多油球數(shù)不定（4~145）国产精品久久久久电影院87，油球徑0.05~0.50mm，油球在卵黃囊中的位置隨不同的發(fā)育時期而不斷發(fā)生變化2828一区二区欧美；胚體處在不同的發(fā)育階段，其特征符合頜針魚目魚卵的特征www.毛片。

Based on otter trawl catch rates of five surveys conducted by South China Sea Fisheries Research Institute from 1961 to 1999, changes in demersal trawling fishery resources in the northern South China Sea were analyzed.

摘 要：利用1961~1999年期間南海水產(chǎn)研究所5次漁業(yè)資源調(diào)查的底拖網(wǎng)漁獲率數(shù)據(jù)美日韩一区二区毛片，分析了南海北部底拖網(wǎng)漁業(yè)資源的數(shù)量變動。

This finding emphasizes the wealth of discoveries to be made in pelagic and deep demersal habitats.

有4個物種生活在靠近海底的地方国产在线精品免费，它們當中有3種生活在水柱的更高處九九久久精品无码免费一区。

Euphausiids supplied most of the food intake for the pelagic fish communities, followed by copepods, amphipods and sagitta, while the most important food resources for the demersal fishes were shrimps and fishes as well as euphausiids.

磷蝦類是中上層魚類最主要的食物來源，其次是橈足類www.在线黄片.com、端足類和毛顎類一级片免费播放；蝦類和魚類是底層魚類最主要的食物來源，其次是磷蝦類www.欧美色图.com。

The eggs, measuring 1.5-1.8 mm in diameter, were demersal strongly sticky, almost spherical in shape, transparent and unpigmented, with a pale yellow yolk and no oil globule and 2.3 - 2.5 mm after absorbing water.

另外采用組織學黄色网址免费在线免费免费免费免费、組織化學對其原始器官分化91精品国产丝袜在线国语，在顯微水平上進行了研究，結果表明：成熟卵圓形玖玖国产精品，卵徑1.5～1.8mm国产AV永久福利资源网站，淡黃色、透明26uuwumaav、沉性51久久综合狠狠综合久久综合、具強粘性。

The results showed that the juvenile A. sinensis mainly fed on demersal fish, polychaeta and amphipoda, as well as some small-sized benthic invertebrates including shrimp, crab and bivalve.

結果表明：長江口中華鱘幼魚以底棲小型魚類456性爱、多毛類和端足類為主要食物亚洲Av中文在线第一页，兼食蝦類、蟹類及瓣鰓類等小型底棲動物黄色av录像。

Eggs are demersal and guarded by the male.

底層和受保護的男性雞蛋黄色大片一级片。

East China Sea Yellow Sea Demersal fish Structure of community

東、黃海日韩一区美女在线观看；底層魚類农村老熟妇乱子伧视频；群落結構；多樣性

Non-sticking demersal eggs (1.1 to 2.8 mm diameter) are laid down, hatching after about 48 hours at 22°C.

非黏的沉性卵(1.1 到 2.8 mm 直徑)生產(chǎn)下來免费乱伦av，在大約 48 小時之后在 22個° C四川一级毛片美女。

The food consumption by the pelagic and demersal fish predators was over 2.62 and 0.47 million tons, accounting for 84.7% and 15.3% of the total food consumption, respectively. E. japonicus and L. tanakae were the most dominant pelagic and demersal predators, respectively.

中上層和底層魚類對餌料生物的攝食量分別為262萬t和47萬t左右，占總攝食量的84.7%和15.3%久草亚洲视频，鳀魚和細紋獅子魚分別是中上層和底層魚類中最主要的捕食者综合婷婷色色。