The effect of habitat hydrology on intraspecific competition, settlement structure, and reproduction in the water vole (Arvicola terrestris)

Muzyka, V. Yu.; Назарова, Г. Г.; Потапов, М. А.; Potapova, O. F.; Evsikov, V. I.

doi:10.1134/s1995425510050176

Cited by 8 publications

(4 citation statements)

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“…The nutritional state index decreases significantly during decline periods. The possible causes include exacerbation of the food defi ciency, which is associated with a decrease in the terri tory that is optimal for breeding, and an increase in animal stress (Evsikov, Moshkin, and Gerlinskaya, 1999a;Ovchinnikova, 2000;Muzyka et al, 2010). The number of corpora lutea and live embryos decreases and the fraction of individuals that reabsorb their litter increases due to the reduction of the physical condi tion of females during the population decline (Fig.…”

Section: Mother's Physical State During Pregnancy and The Progeny Deamentioning

confidence: 96%

“…The fraction of sexually mature young females of European water vole of the current year increases during population size increases and decreases during population size reduc tion (Evsikov, Nazarova, and Rogov, 1999b). Such dynamics could be due to unidirectional interannual changes of the parameters of the abiotic environment (Muzyka et al, 2010) and the characteristics of the physical condition of the females of the parental gen eration (Evsikov, Nazarova, and Muzyka, 2008). As has been shown, the influence of different stress fac tors that compromise the energy balance and hor monal status of the animals has a determined dynam ics (Evsikov et al, 1991).…”

Section: Variability In the Ability Of Females To Accumulate Body Resmentioning

confidence: 97%

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The evolutionary ecology of animal fertility: The fitness of progeny is determined by their prenatal development (according to the example of the European water vole, Arvicola terrestris L.)

Назарова

Evsikov

2012

Russ J Genet Appl Res

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The contribution of the maternal environment (gestational weight gain, month of birth, and litter size) to the formation and realization of the reproductive potential of adjacent European water vole genera tions has been studied for years in the natural population and in captivity. The accumulation of body fat and other reserves during pregnancy plays an essential role in the regulation of reproductive processes. Realization of the reproductive potential of females, growth rate, and the sexual maturation of the offspring depends on the ability of the mothers to properly utilize the energy reserves of their body both during pregnancy and at the next stage of the reproduction cycle, lactation.

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Section: Mother's Physical State During Pregnancy and The Progeny Deamentioning

confidence: 96%

Section: Variability In the Ability Of Females To Accumulate Body Resmentioning

confidence: 97%

The evolutionary ecology of animal fertility: The fitness of progeny is determined by their prenatal development (according to the example of the European water vole, Arvicola terrestris L.)

Назарова

Evsikov

2012

Russ J Genet Appl Res

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“…In current conditions, it is necessary to monitor the number and status of populations of the species, especially in agriculture and healthcare. It should also be noted that A. amphibius is a model of the life form of a small burrowing mammal (Muzyka et al, 2010), which allows one to extrapolate the data obtained to species that occupy similar ecological niches. The paper aims to study population surges of the water vole based on the example of populations in the valley of the Tom River.…”

Section: Fig 1 Schematic Map Of the Study Areamentioning

confidence: 99%

Water vole (Arvicola amphibius) as an object of long-term biomonitoring in a floodplain area (Western Siberia, Russia)

2021

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The paper is devoted to the dynamics of the water vole population in the conditions of total deforestation of valley forests and their subsequent restoration. We analyzed the relative population of small mammals in the typical biotopes in the Tom River basin (Western Siberia) on the border of the forest-steppe and taiga zones. From 1978 to 2019, 1,139 water voles Arvicola amphibius (Linnaeus, 1758) (synonym of A. terrestris) were caught with 50-meter trapping grooves; for 788 individuals we assessed the condition of non-metric features (phenes) of the skull. It was found that changes in the population level are non-cyclical, while against the background of a generally low occurrence of the species in the region, the population level increased tenfold in some years. It was shown that such episodic population surges can significantly impact the structure of the community of small mammals. In the valley of the Tom River, the water vole prefers inhabit wet meadows and ecotone areas between the meadow and the dark coniferous taiga forest. During the years of population surges, the water vole intensely occupies new nesting sites due to the dispersal activity of young animals but at the same time retains the original biotopic preferences. Dispersal of the species takes place in waterlogged wetlands. Most of the animals caught during the peak of their numbers were young animals of late broods born from overwintered individuals. The conducted phenetic analysis revealed the heterogeneity of young animals during the population surge, which allowed us to assume the participation of several populations in the formation of the peak. In the final surge year, the surge was characterized by an extremely low percentage of participation in the breeding of young females and the appearance of a large number of weakened animals, which led to crisis in the species population and the disappearance of the water vole from the captures. The research shows that one cannot predict the success of this process at the current stage; therefore, after flooding, it is necessary to continue monitoring.

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“…The reproductive season starts in the end of April and continues at the phase of growth and peak till September, while at the fall phase-till the middle of July. The success of reproduction depends on climatic conditions, intensity of aggressive interactions between individuals in population, intensity of stress, the physiological state of females [14][15]. Since an important role in regulation of reproduction is played by chemocommunication [16][17][18], the study of factors affecting the urinary excretion level of protein is of considerable interest.…”

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Protein content in urine of male and female water vole (Arvicola amphibius) at the period of spring growth and sexual maturation

Назарова

Proskurnyak

2013

J Evol Biochem Phys

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The study was carried out on the water voles Arvicola amphibius reared in vivarium. For the first decade of January, March, and June, the body length, the anogenital distance, and the body mass were measured, and urine was collected for determination of its protein content. The obtained results have shown that the protein content depends on the animal gender and is connected with the reproductive status of males and their size-weight characteristics. The urinary protein excretion level in females remained stable at different months, whereas in males its sharp rise was noted at the period of spring growth and sexual maturation. The significant sexual differences were established in March and enhanced in June. In March the urine protein content in males was noted to correlate positively with the body mass and length and with the anogenital distance. The males reached sexual maturity at the earlier calendar terms than the females did; in sexually mature males the urine protein content was significantly higher than in the sexually immature ones.

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The effect of habitat hydrology on intraspecific competition, settlement structure, and reproduction in the water vole (Arvicola terrestris)

Cited by 8 publications

References 4 publications

The evolutionary ecology of animal fertility: The fitness of progeny is determined by their prenatal development (according to the example of the European water vole, Arvicola terrestris L.)

The evolutionary ecology of animal fertility: The fitness of progeny is determined by their prenatal development (according to the example of the European water vole, Arvicola terrestris L.)

Water vole (Arvicola amphibius) as an object of long-term biomonitoring in a floodplain area (Western Siberia, Russia)

Protein content in urine of male and female water vole (Arvicola amphibius) at the period of spring growth and sexual maturation

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