Genetic structure of Eurasian beaver in Romania: insights after two decades from the reintroduction

Fedorca, Ancuța; Ciocîrlan, Elena; Paşca, C.; Fedorca, Mihai; Gridan, A.; Ionescu, Georgeta

doi:10.1007/s10344-021-01546-7

Cited by 3 publications

(2 citation statements)

References 41 publications

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“…They control genetic structure and variability of population mostly through DNA‐based methods (Fedorca et al. 2021, Iso‐Touru et al. 2021, Munclinger et al.…”

Section: Resultsmentioning

confidence: 99%

“…This category collects 34 documents related to non-invasive control and genetic monitoring of the species. They control genetic structure and variability of population mostly through DNA-based methods (Fedorca et al 2021, Iso-Touru et al 2021, Munclinger et al 2022, skeleton (Fandén 2005), and anal gland secretions (Schulte et al 1995). The analysis of anal gland secretions is also used to distinguish the two species, that is, American and Eurasian beavers (Rosell & Sun 1999, Rosell et al 2019.…”

Section: Genetic Conservationmentioning

confidence: 99%

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A bibliometric literature review in beaver management: when does the beaver become a resource?

Treves,

Comino

2023

Mammal Review

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Freshwater ecosystems are some of the most biodiverse habitats, but they are among the most endangered due to human activities. In this context, beavers represent a nature‐based solutions to preserve and repair freshwater ecosystem, given their important role as ecosystem engineers. However, in an environment modified by humans, beaver activities frequently create conflicts masking the positive effects of this rodent. Therefore, the management of beaver populations and human–beaver conflicts is needed. This article investigates the literature about beaver management through a bibliometric analysis to understand past, current, and future response. Moreover, it quantifies the number of studies that consider beavers as a resource, and it identifies the emerging themes in the field. The bibliometric analysis was performed considering a total of 415 documents with the software VOSviewer and the R web interface for bibliometrix Biblioshiny. The analysis presented here provides a complete view of past, present, and future management approaches and responses at the base of beaver management strategies. Three main results emerged. Firstly, a rising tendency in the number of publications about beavers that are directly linked to the populations development and spread has detected. Secondly, only 4.3% of scientific literature has referred to beaver‐related restoration. Thirdly, the ‘human perceptions’ has resulted in the emerging field investigated. Findings suggest that there is a lot of research interest about beaver management. The beaver is still poorly managed as a tool for freshwater ecosystem restoration. The management is shifting from studies focused more so on beaver ecology to others mainly focused on the beaver effects and the human dimension. This review provides a starting point for future research on beavers and suggests the development of socio‐ecological management models that consider benefits and impacts of beavers. This will help the decision‐making process of conservation and restoration initiatives.

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“…They control genetic structure and variability of population mostly through DNA‐based methods (Fedorca et al. 2021, Iso‐Touru et al. 2021, Munclinger et al.…”

Section: Resultsmentioning

confidence: 99%

Section: Genetic Conservationmentioning

confidence: 99%

A bibliometric literature review in beaver management: when does the beaver become a resource?

Treves,

Comino

2023

Mammal Review

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Truly monogamous? Investigating multiple paternity in Eurasian beavers (Castor fiber) in a reestablished population in Austria

Sittenthaler,

Chai,

Kruckenhauser

et al. 2024

Mamm Biol

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Knowledge on the mating system of a species is central to understand population dynamics and development. Special attention has been paid to the investigation of monogamous species and evolutionary causes and advantages of this mating system. However, social monogamy does not necessarily imply also genetic monogamy. Given the rarity of genetic monogamy in mammal species and the uncertain conclusions regarding multiple paternity in Eurasian beavers (Castor fiber), here, we undertake a further attempt to clarify the genetic monogamy of Eurasian beavers studying an Austrian beaver population by genotyping of gestating females and their foetuses at 19 microsatellite loci. Microsatellite analysis of mother–offspring groups suggest the occurrence of multiple paternity at a low level: two out of 42 litters (4.8%) were sired by two different males. We discuss the occurrence of extra-pair mating and potential drivers of multiple paternity in the light of beaver biology, population densities, territory characteristics and resulting activity ranges during reproduction period. Especially in the context of increasing beaver population densities in recovering populations and related increase of human-wildlife conflicts, sound knowledge on breeding biology, including species-specific reproduction tactics and their general applicability, is important for population monitoring.

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Recovery in the melting pot: complex origins and restored genetic diversity in newly established Eurasian beaver (Rodentia: Castoridae) populations

Munclinger

Syrůčková

Náhlovský

et al. 2022

Biological Journal of the Linnean Society

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Several larger vertebrate species have recovered from dramatic bottlenecks caused by overhunting and habitat destruction. One of the most notable comebacks concerns the Eurasian beaver (Castor fiber L.), which has increased its range by natural dispersal from both relict populations and populations established through translocations. Genetic methods have recently been used to study beavers at several locations. However, owing to a lack of reference samples from relict populations and alternative names of mitochondrial DNA haplotypes, the ancestry of re-established beaver populations remains obscure. Here, we focus on the genetic characterization of several newly established populations. Unlike previous studies, we also used microsatellite genotypes of reference samples from all relict populations. Our analysis was fully capable of tracing the origin of the nuclear and mitochondrial genome to relict populations. Although we confirmed an extraordinarily low genetic diversity in relict populations, our analysis showed restored diversity in newly established populations resulting from translocations. Recent expansions and stochastic effects have created a strong but complicated population structure, with neighbouring populations differing significantly in genetic composition. We conclude that this restored genetic diversity very likely contributes to the viability and ongoing expansion of the newly established populations.

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Genetic structure of Eurasian beaver in Romania: insights after two decades from the reintroduction

Cited by 3 publications

References 41 publications

A bibliometric literature review in beaver management: when does the beaver become a resource?

A bibliometric literature review in beaver management: when does the beaver become a resource?

Truly monogamous? Investigating multiple paternity in Eurasian beavers (Castor fiber) in a reestablished population in Austria

Recovery in the melting pot: complex origins and restored genetic diversity in newly established Eurasian beaver (Rodentia: Castoridae) populations

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