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生态学杂志 ›› 2024, Vol. 43 ›› Issue (4): 959-966.doi: 10.13292/j.1000-4890.202404.007

• 鱼类的生活习性及生态保护 • 上一篇    下一篇

光照周期对两种鱼类社会性及社会奖赏情景下行为策略的影响

曾足仙,龙家兴,何娇阳,付世建*   

  1. (重庆师范大学进化生理与行为学实验室, 重庆市动物生物学重点实验室, 重庆 401331)
  • 出版日期:2024-04-10 发布日期:2024-04-07

Effects of photoperiod on sociability and behavioral strategies under social reward scenarios in two fish species.

ZENG Zuxian, LONG Jiaxing, HE Jiaoyang, FU Shijian*   

  1. (Laboratory of Evolutionary Physiology and Behavior, Chongqing Key Laboratory of Animal Biology, Chongqing Normal University, Chongqing 401331, China).

  • Online:2024-04-10 Published:2024-04-07

摘要: 群体互动有助于成员的行为发展和生长发育,探究社会互动过程中社会奖赏的机制、表现和影响因素具有重要的意义。为了考察光照周期改变对鱼类社会性及社会奖赏情景下的决策行为的影响,本研究选取亲缘关系较远、群体互动特征不同且生境光照周期状况迥异的中华倒刺鲃(Spinibarbus sinensis)和雪鲷(Pseudotropheus zebra)作为实验对象,分析了短光照周期处理的两种鱼类在六臂迷宫探索时针对社会奖赏刺激鱼群的决策行为特征参数。结果表明:与中华倒刺鲃相比,雪鲷表现出更高的探索性和群体互动;雪鲷在群体决策时间上体现出集体智慧;短光照对雪鲷个性行为没有显著影响,但导致雪鲷社会互动时间和个体决策精度的下降;短光照导致中华倒刺鲃探索行为的上升和凝聚力的下降,但对决策的时间、精度以及群体互动时间均没有显著影响;光照周期对鱼类个性特征和群体互动影响存在种间差异,总体上对中华倒刺鲃的群体个性行为影响更为明显,对雪鲷的决策策略影响更为显著。这可能与二者社会互动和个性特征差异以及生境光周期特点相关。

关键词: 短光照周期, 中华倒刺鲃, 雪鲷, 决策, 勇敢性, 凝聚力

Abstract: Social interaction among group members contributes to the development of behavior and bodily tissues. It is thus of great significance to explore the mechanism, performance and influencing factors of social reward. To explore the effects of photoperiod on sociability and decision-making behavior in fish under social reward scenarios, Qingbo (Spinibarbus sinensis) and cichlid (Pseudotropheus zebra) with distantly genetic relationship, different social-interaction characteristics and distinct habitat photoperiod condition were selected as experimental objects. The parameters of behavioral characteristics to the stimulus shoal as a social reward in a six-arm maze were analyzed for both short-photoperiod-treated and control fish. The results showed that compared with Qingbo, cichlid showed stronger exploratory behavior and more group interaction activity. The decision time of group cichlids was faster than individual cichlid. Short photoperiod treatment exhibited no significant effect on personality in cichlid, but led to the decline in social interaction time with stimulus shoal and the accuracy of individual decision-making. By contrast, short photoperiod treatment resulted in increased exploration behavior, decreased group cohesion, but did not affect decision time, accuracy and group interaction activity in Qingbo. Our results suggested that the effects of photoperiod on fish behavior and population interaction differed between the two species. In general, the behavior characteristics related to personality in Qingbo were more sensitive to photoperiod treatment, whereas the decision-making strategy of cichlid was more vulnerable to such treatment. These differences might be related to the differences in social interaction pattern, personality, and photoperiod conditions of habitats between two species.


Key words: short photoperiod, Spinibarbus sinensis, Pseudotropheus zebra, decision making, bravery, cohesion