نتایج جستجو برای: spawning season
تعداد نتایج: 61864 فیلتر نتایج به سال:
Simulation models examined the process of gene flow in marine animals with planktonic larvae, and three factors that may influence it: ocean currents, planktonic period and spawning season. To focus on a realistic example, the models were based on measured ocean currents around Point Conception in southern California and the life histories of two intertidal gastropods, Littorina scutulata and L...
Salmon steaks cook at a festival marking the annual return of the salmon, when the fish travel from the ocean to freshwater streams for spawning season. For the tribes of the Pacific Northwest, seafood plays a spiritual and cultural role in addition to being a dietary staple.
In the present study, the female Clarias batrachus, held under long photoperiod (13L:11D), were exposed to high water temperature either constantly (24 h) and/or in form of thermopulse of 6 h and 12 h durations, separately, at different times of the day/night cycle for six weeks during the early post-spawning and late post-spawning phases of its reproductive cycle. The effects of high water tem...
Many animals perform long-distance migrations in order to maximize lifetime reproductive success. The European eel migrates several thousand kilometers between their feeding habitats in continental waters (fresh-, brackish, and sea water) and their spawning area in the Sargasso Sea. Eels residing in freshwaters usually initiate their spawning migration as silver eels during autumn, triggered by...
The relationships between egg production (spawning behavior), larval growth and survival, and environmental conditions that larvae encounter were investigated in the Patuxent River tributary of Chesapeake Bay in 1991. Striped bass @forone suxutilis) eggs and larvae occurred predominantly above the salt front where conductivity was 300 pmhos cm-‘. There were three prominent peaks in egg producti...
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