The Parental Response to Brood Size Manipulation in Smallmouth Bass (Micropterus dolomieui)
The Parental Response to Brood Size Manipulation in Smallmouth Bass (Micropterus dolomieui)
复制标题
父母对小口黑鲈 (Micropterus dolomieui) 幼崽大小控制的反应
DOI：
10.1111/j.1439-0310.1989.tb00728.x
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发表时间：
2010
期刊：
影响因子：
1.7
通讯作者：
M. Ridgway
中科院分区：
文献类型：
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作者：
M. Ridgway
在这项实地研究中，育雏的男性smallmouth低音（Micropterus gallieui）进行了操纵，以确定如果男性调整他们的防御水平，以应对育雏大小的变化。同种模型的大小相等，以引起防御之前和之后的操作，之前游泳的后代从巢。增加育雏的男性增加了他们的防御和减少育雏的男性降低了他们的防御，无论是相对于控制。这些结果是在预测的方向，然而，危险的战术，咬，是更独立的育雏大小的变化相对于风险较小的威胁行为，下巴显示。这些结果表明，父母调整他们的投资水平，以应对育雏大小的变化，相对于他们自己的预期未来的繁殖，并与父母的不同的防御策略的伤害或死亡的风险可以解释为什么一些措施的育雏防御是相对独立的育雏大小。
In this field study, the broods of male smallmouth bass (Micropterus dolomieui) were manipulated to determine if males adjust their level of defense in response to changes in brood size. Conspecific models of equal size were used to elicit defense before and after manipulations, prior to swim-up of offspring from the nest. Males with augmented broods increased their defense and males with reduced broods decreased their defense, both relative to a control. These results were in the predicted directions; however, the risky tactic, biting, was more independent of brood size changes relative to a less risky threat behaviour, the jaw display. These results demonstrate that parents adjust their level of investment in response to changes in brood size relative to their own expected future reproduction, and that risks of injury or mortality associated with the parent's different defense tactics can explain why some measures of brood defense are relatively independent of brood size.