«SPAWNING PLACE»に関連する英語の本
以下の図書目録から
spawning placeの使いかたを見つけましょう。
spawning placeに関する本と英語文献で使われた文脈を提供するための簡単な抜粋文。
1
Conservation Of Endangered Freshwater Fish In Europe
Egg stratification in the interstices of a spawning place of Alburnoides
bipunctatus within 10 vertical columns week of July (week 27), i.e., the spawning
period extended over 10 weeks. Seven spawning phases with five females
reveal that at ...
Arthur Kirchhofer, Daniel Hefti,
1996
2
Report of the Commissioner for ...
With a water temperature of 24° C. (75.2° F.) it is hatched in about 60-70 hours,
but when the temperature is lower it takes longer, requiring about seven days
with a temperature of 62.6°- 64°.4 F. 106 For a spawning-place the shad prefers ...
3
Living Marine Resources: Their Utilization and Management
... pass through the larval stages, at a period in their lives when they are highly
vulnerable to predators. Survival generally will be much higher when the young
find conditions optimum for rapid growth. Place of Spawning The spawning place
...
4
Report of the Commissioner of Fisheries to the Secretary of ...
Spawning place and season of tho trout. 3. The ovaries of the female empty their
contents into the abdominal cavity. 4. Structure of the egg : o. Tho yelk. 6. The
germ. o. The shell of the egg and the micropyle. 5. Tho testicles of the male have
...
United States. Bureau of Fisheries,
1889
5
Ling, Blue Ling and Tusk of the Northeast Atlantic
Another spawning place was recently located southeast of the Reykjanes Ridge,
in 600 to 1000 m depth. It is most likely that blue ling spawn at several such
isolated places off the southeast, south and southwest coasts of Iceland.
Spawning in ...
6
Report of the Commissioner for ...
The spawning-place at Battle Creek is 1£ miles from the hatchery, the eggs being
hauled that distance in wagons over a rather uneven road without any injury.
Nearly 700,000 eggs 43 days old were sent from Battle Creek to Olema; they
were ...
United States Fish Commission,
1899
At one time Horse Island, at the mouth of the bay, was a favorite spawning place
for whitefish and trout, but the waters of this and other similar localities are now
deserted, so far as the species in question are concerned. The fish trade.
United States. Bureau of Fisheries,
1891
8
An Inquiry Into the Present State and Means of Improving the ...
If the argument were good for any thing, it would go farther than the river fishers
desire ; for if the spawning place ought also to be the place of capture, then the
fishings in the up-, per part of the rivers should be the most valuable. But it is well
...
... 500 to COO hooks; but these attempts have not been successful, only about
ten fish having been caught. The blekja spawn after July 15, and the spawning
season is at its height from July 20 till August 1. The spawning place is about half
a ...
United States. Congress,
1887
10
Report of the Danish Biological Station
Thus the spawning place of the eel was found; we know where the silver eels are
going to when they leave our fresh and salt water in autumn, and we know
whence the countless swarms of montee (elvers or glass-eels) come which
appear ...
Copenhagen (Denmark) Dansk biologisk station,
1905
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Crews constructing Milwaukee River reef for spawning lake fish
They were close to the 50-inch size threshold needed for spawning. ... they will be swimming up the river of their birth in search of suitable spawning places. «Milwaukee Journal Sentinel, 11月 14»
New Video Explores the Mystery of Eels
Once they leave freshwater rivers to spawn, they pretty much disappear. ... but we don't know the exact location — or even how they find the spawning places. «Wired, 4月 13»