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Nest-site selection in a fish species with paternal care
Hydrobiologia ( IF 2.6 ) Pub Date : 2020-12-04 , DOI: 10.1007/s10750-020-04470-0
Theo C. M. Bakker , Beat Mundwiler

Fish that perform paternal care may increase their fitness by choosing nest sites that enhance survival and development of embryos. We studied nest-site choice with respect to dissolved oxygen concentration and water temperature in males of the three-spined stickleback (Gasterosteus aculeatus), a small fish species with exclusive male parental care that usually breeds in the littoral zone of freshwaters of the Northern hemisphere. Fathers oxygenate the embryos by fanning movements of their pectoral fins. We expected choice for conditions at potential nest sites that would benefit offspring development, i.e., higher temperature and higher dissolved oxygen concentration. In the laboratory, we offered males a choice between two potential nest sites that differed in dissolved oxygen concentration or water temperature. Males preferred to build a nest at sites with a higher dissolved oxygen level or higher temperature and thus chose sites that would promote embryo development.

中文翻译:

有父系照顾的鱼类的巢址选择

执行父亲照顾的鱼可以通过选择提高胚胎存活和发育的筑巢地点来增加它们的健康。我们研究了三刺棘鱼 (Gasterosteus aculeatus) 雄鱼在溶解氧浓度和水温方面的巢址选择,这是一种具有专属雄性亲本照顾的小型鱼类,通常在北半球淡水沿岸地区繁殖. 父亲通过扇动胸鳍为胚胎供氧。我们期望选择有利于后代发育的潜在巢穴条件,即更高的温度和更高的溶解氧浓度。在实验室中,我们为雄性提供了在溶解氧浓度或水温不同的两个潜在巢穴之间的选择。
更新日期:2020-12-04
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