Zamaletdinov Renat, Svinin Anton, Fayzulin Alexander, Ermakov Oleg, Mikhaylova Regina, Litvinchuk Spartak
Department of Environmental Engineering and Water Resources Management, Kazan (Volga Region) Federal University, 420008 Kazan, Russia.
Institute of Cytology, Russian Academy of Sciences, 199034 St. Petersburg, Russia.
Animals (Basel). 2025 Apr 30;15(9):1273. doi: 10.3390/ani15091273.
An analysis of the age structure of three water frog species (. , . , . ) in the Middle Volga region of Russia was conducted. The skeletochronological method determined their maximum lifespans to be 7, 6, and 4 years, respectively. This study revealed specific characteristics of the age structure of frogs in relation to their taxonomic composition when cohabiting (population system type) and the degree of habitat transformation. Differences in body size and lifespan were observed among cryptic forms exhibiting mitochondrial DNA replacement and the presence of various types of heterozygous and homozygous alleles. Water frogs of the genus have a complex taxonomic structure, including hybrid species and morphologically cryptic forms, as well as massive mitochondrial DNA introgression. The aim of our paper was to analyze the age structure of three species of water frogs (, , and ) in the Middle Volga River region (European Russia). Based on the skeletochronological method, we determined their maximum lifespans of seven, six, and four years, respectively. The onset of sexual maturity in the marsh frogs occurred after two and four winterings in males and females (respectively), in the pond frog-one to two years, and in the edible frog-one to three years. This study revealed specific characteristics of the age structure of frogs in relation to their taxonomic composition when cohabiting (population system type) and the degree of habitat transformation. Differences in body size and lifespan were observed among cryptic forms exhibiting mitochondrial DNA replacement and the presence of various types of heterozygous and homozygous alleles.
对俄罗斯伏尔加河中游地区的三种水蛙（ 、 、 ）的年龄结构进行了分析。骨骼年代学方法确定它们的最大寿命分别为7年、6年和4年。这项研究揭示了水蛙在同居时（种群系统类型）的年龄结构与其分类组成以及栖息地转变程度相关的特定特征。在表现出线粒体DNA替代以及存在各种类型杂合和纯合等位基因的隐性形态之间观察到了体型和寿命的差异。 属的水蛙具有复杂的分类结构，包括杂交物种和形态上的隐性形态，以及大量的线粒体DNA渗入。我们论文的目的是分析伏尔加河中游地区（俄罗斯欧洲部分）的三种水蛙（ 、 和 ）的年龄结构。基于骨骼年代学方法，我们分别确定它们的最大寿命为7年、6年和4年。沼蛙的雄性和雌性分别在经历两个和四个冬季后达到性成熟，池蛙在一到两年后达到性成熟，食用蛙在一到三年后达到性成熟。这项研究揭示了水蛙在同居时（种群系统类型）的年龄结构与其分类组成以及栖息地转变程度相关的特定特征。在表现出线粒体DNA替代以及存在各种类型杂合和纯合等位基因的隐性形态之间观察到了体型和寿命的差异。
