THE INFLUENCE OF HUNGER ON FEEDING-BEHAVIOR AND ON THE ACQUISITION OF LEARNED FORAGING SKILLS BY THE 15-SPINED STICKLEBACK, SPINACHIA-SPINACHIA L
THE INFLUENCE OF HUNGER ON FEEDING-BEHAVIOR AND ON THE ACQUISITION OF LEARNED FORAGING SKILLS BY THE 15-SPINED STICKLEBACK, SPINACHIA-SPINACHIA L
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DOI：
10.1016/s0003-3472(05)80511-1
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发表时间：
1991-01-01
期刊：
影响因子：
2.5
通讯作者：
HUGHES, RN
中科院分区：
文献类型：
--
作者：
CROY, MI;HUGHES, RN
增加的饥饿感和相关的摄食动机提高了已经以钩虾或卤虫为猎物的刺鱼的觅食效率。除了基本觅食序列之外的行为成分的执行频率较低，反应距离和攻击速度随着处理时间的减少而增加。随着幼鱼获得猎物经验，觅食效率也有所提高，但学习率会因觅食者的初始饥饿水平而改变。 24小时不进食的鱼比那些饱食度为50%和95%的鱼更快、更彻底地获得了攻击和处理技能。学习提高了 Gammarus 和 Artemia 的盈利能力。然而，利润较低的猎物类型是否可以变得比另一种利润更高，关键取决于与学习和饱足的独立影响相关的猎物特定的内在处理时间的增加和减少率，以及觅食者的初始饥饿水平。
Increased hunger and associated feeding motivation increased the foraging efficiency of sticklebacks already experienced withGammarusorArtemiaas prey. Behavioural components additional to the basic foraging sequence were performed less frequently and reaction distance and speed of attack increased as handling time decreased. Foraging efficiency also increased as naive fish gained experience with prey, but the rate of learning was modified by the forager's initial hunger level. Fish deprived of food for 24 h acquired attack and handling skills faster and more thoroughly than those fed to 50 and 95% satiation. Learning increased the profitability of bothGammarusandArtemia. Whether a less profitable prey type can become more profitable than another will, however, depend critically on the prey-specific intrinsic rates of increase and decrease of handling time associated with the independent effects of learning and satiation, and on the forager's initial level of hunger.