| 1. | These spring chinook salmon are heading for the wanatchee river and icicle creek , in the shadow of the majestic cascade mountains
这些春季洄游的太平洋鲑鱼在卡斯克德山脉的荫蔽下，向文纳奇河和冰溪前进。 |
| 2. | During every june and september , sail against the current from south to north and taste tender and delicious , it s the right time of catching
主要分布在我国东南沿海，善游泳，渔期在6月- 9月，生活洄游路线由南向北，味美肉嫩。 |
| 3. | G . przewalskii migrates to rivers for reproduction from may to august , and the main reproduction sites are the three rivers of shaliu river , buna river and heima river
青海湖裸鲤在5 8月洄游到河流中繁殖，沙柳河、布哈河和黑马河3条河流为其主要产卵场。 |
| 4. | Population of the chinese sturgeon migrates to yangtze river every year has decreased from about 2176 individuals shortly after ge zhou damming to 1000 or so at present
每年洄游至长江的中华鲟产卵群体数量，已从葛洲坝截流初期的约2176尾下降到目前的1000尾左右。 |
| 5. | In order to make the fishway design more reasonable and make the fish migration and semi - migration passing the fishway successfully , each country attaches great importance to research of fishway design
为了使鱼道设计更合理，使洄游、半洄游鱼类能顺利通过鱼道，各个国家都很重视鱼道设计的研究。 |
| 6. | During the breeding season , adults will return from their foraging grounds to their natal beaches for reproduction . at present , sham wan on lamma island is the only existing nesting site of green turtles in hong kong
在繁殖季节，成年海都会从数千公里外的觅食地洄游到出生地繁殖，而南丫岛的深湾是本港唯一现存的绿海产卵地。 |
| 7. | During the breeding season , adults will return from their foraging grounds to their natal beaches for reproduction . at present , sham wan on lamma island is the only existing nesting site of green turtles in hong kong
在繁殖季节，成年海龟都会从数千公里外的觅食地洄游到出生地繁殖，而南丫岛的深湾是本港唯一现存的绿海龟产卵地。 |
| 8. | And the results obtained are summarized as follows : ( 1 ) the mean cpue of yearly total landings of the double - trap net has been increasing more than three times while compared with that of the single - trap net
其中，尤以底栖性的红甘? 、浪人? 、双带? 、白?及?鱼，与洄游性的鲔、 ? 、旗鱼、塞氏? 、细文鳐鱼及鬼头刀等的增产，明显地受网型改变之影响。 |
| 9. | The wusuli river group has its stationery tour route , the spawning population wing up heilongjiang river and swims into wusuli river in early may when ice has melt , reproduces during mid june to july in middle part of wusuli river
乌苏里江种群在乌苏里江有较稳定的洄游路线，产卵群体自5月初解冻后，沿黑龙江上溯，进入乌苏里江并沿江上溯， 6月中旬至7月初在乌苏里江中游产卵。 |
| 10. | As green turtles invariably return to their natal beach to nest , any development and human activities that will change the natural environment of the nesting site andor cause obstructions to their migratory route would wipe out the local population
由于绿海龟拥有洄游到其出生地产卵的天性，任何改变其产卵地自然环境或阻碍其洄游路线的发展及活动，都有可能令到本地的种群灭绝。 |
