Manipulating photoperiod can alter spawning time by over four months and is cheap and straightforward to achieve.
12.
The spears apparently were used to catch catfish that still abound in the Semliki River at spawning time.
13.
The Auke people continued to return to what they called Indian Point, for the annual harvest of herring at spawning time.
14.
These methods are best utilized beneath impoundments over sand or gravel substrates around spawning time each spring, where they are most abundant.
15.
Carp are widespread and common in the system and compete with smallmouth yellowfish for food as well as eating yellowfish eggs at spawning time.
16.
Ships must fill their ballast water tanks and during one of these filling events, it could have been the spawning time for the mitten crab.
17.
The 1.04 update patch released on adds changes to game difficulty, including enemy spawning times in certain missions and allowing the thorn to be used whilst dashing.
18.
In general, spawning times for Spanish mackerel tend to be associated with higher water temperatures that promote optimal food availability for the rapid growth and development of the larvae.
19.
Because the Palolo adjust their spawning time between October and November, and because of inter-island differences in spawning times, there are factors other than the Moon that control the timing.
20.
Because the Palolo adjust their spawning time between October and November, and because of inter-island differences in spawning times, there are factors other than the Moon that control the timing.
