Behavioral ecology in co-occurring territorial males of the pupfishes, Garmanella pulchra and Cyprinodon artifrons, at reciprocally asymmetric densities in a mangrove floodplain

IF 1.1 4区 生物学 Q4 BEHAVIORAL SCIENCES acta ethologica Pub Date : 2023-11-30 DOI:10.1007/s10211-023-00433-5
Omar Domínguez-Castanedo, Tessy M. Muñoz-Campos, Sharon Valdez-Carbajal, Anthony A. Echelle
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Abstract

Two cyprinodontids, Garmanella pulchra and Cyprinodon artifrons, coexist in a small mangrove floodplain on the Yucatan Peninsula, enabling comparison of male territoriality in two species with similar social structure and resource needs. There were two contrasting situations, one where territorial males of G. pulchra were several times more abundant than those of C. artifrons and one where the reverse was true. In both situations, the roughly circular breeding territories were non-overlapping intraspecifically and showed complete overlap interspecifically. Territories of both species were several times smaller in the situation where they were numerically dominant. In that situation, the territories of G. pulchra were about twice as large as those of C. artifrons and males of both species showed higher conspecific aggression, lower heterospecific aggression, more reproductive activity, lower feeding rates, and lower percentages of body fat. In both situations of relative density, the percentage fat content was orders of magnitude greater in C. artifrons than in G. pulchra, potentially reflecting higher rates of territorial male turnover in the latter. Social behavior in the wild, described for the first time for both species, generally conforms to typical cyprinodontid themes for territorial and reproductive behavior. There was no evidence, in G. pulchra, of the courtship dance, nor the overt, male parental care described for Jordanella floridae, a species once considered a congener.

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红树林洪泛平原上密度非对称时共同出现的领地雄性斑马鱼(Garmanella pulchra)和梭鱼(Cyprinodon artions)的行为生态学
在尤卡坦半岛的一个小红树林洪泛平原上,两种鲤科动物Garmanella pulchra和Cyprinodon artions共存,这使得两种具有相似社会结构和资源需求的物种可以比较雄性领土。有两种截然不同的情况,一种是领地雄虫数倍于领地雄虫,另一种是领地雄虫数倍于领地雄虫。在这两种情况下,大致圆形的繁殖区域种内不重叠,种间完全重叠。在数量优势的情况下,两种物种的领地都要小几倍。在这种情况下,黄颡鱼的领地面积约为黄颡鱼的2倍,两种雄鱼均表现出较高的同种攻击性、较低的异种攻击性、较高的繁殖活性、较低的取食率和较低的体脂率。在两种相对密度的情况下,黄颡鱼的脂肪含量百分比都比黄颡鱼高几个数量级,这可能反映了后者更高的领地雄性更替率。这两个物种在野外的社会行为首次被描述,总体上符合典型的圆柱齿动物的领土和繁殖行为主题。在G. pulchra中,没有证据表明求偶舞蹈,也没有在佛罗里达乔丹拉(Jordanella floridae)中描述的明显的雄性亲代照顾,而佛罗里达乔丹拉曾被认为是它的近亲。
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来源期刊
acta ethologica
acta ethologica 生物-动物学
CiteScore
1.90
自引率
0.00%
发文量
18
审稿时长
>12 weeks
期刊介绍: acta ethologica publishes empirical and theoretical research papers, short communications, commentaries, reviews and book reviews as well as methods papers in the field of ethology and related disciplines, with a strong concentration on the behavior biology of humans and other animals. The journal places special emphasis on studies integrating proximate (mechanisms, development) and ultimate (function, evolution) levels in the analysis of behavior. Aspects of particular interest include: adaptive plasticity of behavior, inter-individual and geographic variations in behavior, mechanisms underlying behavior, evolutionary processes and functions of behavior, and many other topics. acta ethologica is an official journal of ISPA, CRL and the Portuguese Ethological Society (SPE)
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