Demographic structure of three riparian mustelid species in Spain

Mañas, Sisco; Gómez, Asunción; Asensio, Victoria; Palazón, Santiago; Põdra, Madis; Casal, Jordi Domènech

doi:10.1007/s10344-015-0982-9

Cited by 7 publications

(5 citation statements)

References 28 publications

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“…Recent papers on age determination of mink refer to either Helldin (1997) [ 21 ] or the Matson’s Laboratory (P.O. Box 308, Milltown, MT 59851, USA) [ 15 , 24 , 25 , 26 ]. However, the model by Helldin (1997) was based on the width of the pulp cavity in the teeth of Eurasian pine martens ( Martes martes ).…”

Section: Introductionmentioning

confidence: 99%

Estimation of the Age and Reproductive Performance of Wild-Born and Escaped Mink (Neovison vison) Caught in the Wild in Denmark

Pagh

Pertoldi

Chriél

et al. 2021

Animals

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The feral mink population in Denmark consists of two groups of animals: mink born in the wild and mink that have recently escaped from farms. The aims of this study were to: (1) estimate the reproductive performance and mortality of the Danish mink born in the wild (wild-born) and mink escaped from farms (captive-born); (2) discuss the likelihood of a self-sustaining population of wild-born mink in Denmark; and (3) model the relationship between the pulp cavity width and the age of mink. During 2018, 247 wild caught mink were sent for necropsy at the Danish National Veterinary Institute. Based on body length, 112 were determined as captive-born and 96 as wild-born. The mean litter size ± SE of wild-born females was 7.6 ± 0.9 (range: 5–11 kits) and for captive-born females 5.9 ± 0.9 (range: 1–10 kits). The relationship between age (in months) of mink and pulp cavity width was highly significant. Individuals with a pulp cavity width of >35% were younger than one year. Based on fecundity, the turnover of the mink population was estimated to be 66%, and the yearly mortality was estimated at 69%. Hence, the population is slightly declining. In conclusion, a feral reproducing mink population in Denmark persists without a continuous influx of captive-born mink from farms.

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Section: Introductionmentioning

confidence: 99%

Estimation of the Age and Reproductive Performance of Wild-Born and Escaped Mink (Neovison vison) Caught in the Wild in Denmark

Pagh

Pertoldi

Chriél

et al. 2021

Animals

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“…That means that most of the mink released are not able to survive until the next breeding season. Further, the scanty data on age‐specific survival of European mink in the wild suggests that the majority of mink in wild populations fall into the age classes 0–1 to 3–4 years and only a few survive for longer (Danilov & Tumanov, 1976; Mañas et al, 2016; Sidorovich & Maran, 1997). This further supports the outcome of this study that more recent translocations have contributed to the island's gene pool.…”

Section: Discussionmentioning

confidence: 99%

How was genetic diversity transferred with translocations from ex situ to in situ? A case study of the European mink translocation to Hiiumaa Island in Estonia

Nummert

Nemvalts²,

Maran

2023

Zoo Biology

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The European mink (Mustela lutreola) is one of the most threatened small carnivores, listed as Critically Endangered on the IUCN Red List. Tallinn Zoo started a conservation breeding operation in 1980, which in 1992 was shaped into the European mink EEP Program to maintain a demographically and genetically healthy population in captivity. Since 2000, mink have been translocated on a yearly basis from the breeding facility in the zoo to Hiiumaa Island (Estonia) until the formation of the wild island population in 2016. Maintaining a healthy genetic structure in a captive population was a priority, so genetically the least valuable animals, according to calculations made by a population management program, were used for translocation. This study aims to assess the amount of genetic diversity passed from an ex situ population on to the island population. Comparisons of the genetic diversity were made by mitochondrial, microsatellite and nuclear markers. In addition, our results were combined with the pedigree data from the European mink EEP Studbook to further evaluate the flow of genetic diversity from the founder population to the established wild population. According to the findings, the island population's allelic richness was comparable to that of the founder population, and no evidence was found that its genetic structure had diverged from that of the founder population. It seems that the formation of the island population has been a gradual process of no more than the last seven yearly translocations.

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“…In regard to age, both animals with neoplasms and HV infection (PM‐1 and LM/PM‐9) were considered to be of advanced age for the species (over nine years old). The oldest recorded free‐ranging European mink was five years old; however, captive animals can reach ten years of age (Mañas, Gómez, Asensio, Palazón, Pǒdra, et al, 2016). The nodular acinar pancreatic hyperplasia, prostatic hyperplasia and glomerulosclerosis observed in PM‐1, as well as nodular acinar and ductal pancreatic hyperplasia, and nodular splenic hyperplasia in LM/PM‐9 were possibly related to ageing.…”

Section: Discussionmentioning

confidence: 99%

“…The main factors causing its decline are interspecies competition with the non‐native American mink ( Neovison vison ), habitat loss and degradation (pollution), over‐hunting and infectious diseases (e.g. Aleutian mink disease and canine distemper; Lodé, Cormier, & Le Jacques, 2001; Mañas, Gómez, Asensio, Palazón, Pǒdra, et al, 2016; Maran et al., 2016). Without the implementation of more effective conservation measures, the European mink will very likely soon become extinct in Spain (Ferrer, 2014).…”

Section: Introductionmentioning

confidence: 99%

Neoplasms and novel gammaherpesviruses in critically endangered captive European minks ( Mustela lutreola )

Francisco

Esperón²,

Juan‐Sallés

et al. 2020

Transbounding Emerging Dis

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The European mink (Mustela lutreola) is a riparian mustelid, considered one of the most endangered carnivores in the world. Alpha, beta and gammaherpesviruses described in mustelids have been occasionally associated with different pathological processes. However, there is no information about the herpesviruses species infecting European minks. In this study, 141 samples of swabs (oral, conjunctival, anal), faeces and tissues from 23 animals were analysed for herpesvirus (HV) using a pan-HV-PCR assay. Two different, potentially novel, gammaherpesvirus species were identified in 12 samples from four animals (17.3%), and tentatively named Mustelid gammaherpesvirus-2 (MUGHV-2) and MuGHV-3. Gross examination was performed on dead minks (n = 11), while histopathology was performed using available samples from HV-positive individuals (n = 2), identifying several neoplasms, including B-cell lymphoma (identified by immunohistochemistry) with intralesional syncytia and intranuclear inclusion bodies characteristic of HV (n = 1), pulmonary adenocarcinoma (n = 1), and biliary (n = 1) and preputial (n = 1) cystadenomas, as well as other lesions (e.g., axonal vacuolar degeneration [n = 2] and neuritis [n = 1]). Viral particles, consistent with HVs, were observed by electron microscopy in the mink with neural lymphoma and inclusion bodies. This is the first description of neoplasms and concurrent gammaherpesvirus infection in European minks. The pathological, ultrastructural and PCR findings (MuGHV-2) in the European mink with lymphoma strongly suggest a potential role for this novel gammaherpesvirus in its pathogenesis, as it has been reported in other HV-infected species with lymphoma. The occurrence of neural lymphoma with intralesional syncytia and herpesviral inclusions is, however, unique among mammals. Further research is warranted to elucidate the potential oncogenic properties of gammaherpesviruses in European mink and their epidemiology in the wild population.

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Demographic structure of three riparian mustelid species in Spain

Cited by 7 publications

References 28 publications

Estimation of the Age and Reproductive Performance of Wild-Born and Escaped Mink (Neovison vison) Caught in the Wild in Denmark

Estimation of the Age and Reproductive Performance of Wild-Born and Escaped Mink (Neovison vison) Caught in the Wild in Denmark

How was genetic diversity transferred with translocations from ex situ to in situ? A case study of the European mink translocation to Hiiumaa Island in Estonia

Neoplasms and novel gammaherpesviruses in critically endangered captive European minks ( Mustela lutreola )

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