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Parental male and female convict cichlids assess and respond to threats differently depending on intruder species
Behavioural Processes ( IF 1.3 ) Pub Date : 2021-04-08 , DOI: 10.1016/j.beproc.2021.104396
Natalie A. van Breukelen , Nicholas Santangelo

In this field experiment, we presented pairs of monogamous convict cichlids with different intruders (conspecific and either cichlid or non-cichlid heterospecific) and observed the aggressive behavior of the pair to determine if pairs adjust aggression based upon species of intruder. We predicted that pairs would be more aggressive to conspecifics as these intruders represent multiple threats. The overall pair aggression was significantly higher to the conspecific intruder than to either heterospecific intruder. We also predicted that within pairs, the sexes might differ in how they assessed the risk represented by the intruders and might respond differently. Indeed, females were significantly more aggressive to the conspecific than to either heterospecific whereas males were more aggressive to the conspecific only compared to the non-cichlid heterospecific. These results suggest parental convict cichlids differently assess the risk posed by an intruder and then adjust aggression to different species of intruder. It also supports that the aggressive roles within a pair are flexible and that males and females modulate their behavior differently in response to different species of intruders perhaps based on differences in risk assessment.



中文翻译:

父母定罪的丽鱼科鱼对入侵者的评估和响应方式因入侵者物种而异

在此田间实验中,我们提出了具有不同入侵者的一对一夫一妻制定罪丽鱼科鱼(同种和非丽鱼科鱼或异种丽鱼科鱼异种),并观察了该对的攻击行为,以确定这些对是否根据入侵者的物种来调节侵略性。我们预测,由于这些入侵者代表着多种威胁,因此配对对物种更具攻击性。同种入侵者的总体对攻击力明显高于异种入侵者。我们还预测,在成对中,性别在评估入侵者所代表的风险的方式上可能会有所不同,并且应对方式可能会有所不同。确实,雌性比同种异种显着地更具侵略性,而雄性仅比非丽鱼科动物异种更具有侵略性。这些结果表明,父母定罪的丽鱼科鱼会以不同的方式评估入侵者带来的风险,然后针对不同种类的入侵者调整侵略性。它还支持一对中的积极角色是灵活的,并且男性和女性可能根据风险评估的差异,对不同种类的入侵者做出不同的行为调节。

更新日期:2021-04-14
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