Microsatellite variability in nutria (Myocastor coypus) genetic resource in the Czech Republic

Choi

et al. 2019

Animals

The nutria (Myocastor coypus) is an invasive alien species that have had major adverse effects on biodiversity and the agricultural economy in wetland habitats. Since 2014, the Ministry of Environment in South Korea has been carrying out the Nutria Eradication Project, and we investigated nutria distribution and genetic diversity of nutria populations in South Korea. We estimated that 99.2% of nutria habitats are in the mid-lower Nakdong River regions. To further analyze the genetic diversity in eight major nutria populations, we performed a genetic analysis using microsatellite markers. Genetic diversity levels of the eight nutria populations in South Korea were relatively lower than those in other countries. The probability of migration direction among nutria populations was predicted from genetic distance analysis. Genetic structure analysis showed little difference among the nutria populations in South Korea. These results suggest that nutrias in South Korea originated from a single population. Our results provide important data for establishing management strategies for the successful eradication of nutria populations in South Korea, as well as in other countries with alien invasive species.

Section: Genetic Diversity Analysis Of Nutria Populationsmentioning

confidence: 90%

Section: Dna Extraction and Microsatellite Genotypingmentioning

confidence: 99%

Section: Genetic Data Analysismentioning

confidence: 99%

Section: Genetic Diversity Analysis Of Nutria Populationsmentioning

confidence: 99%

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Genetic Diversity and Population Structure of Nutria (Myocastor coypus) in South Korea

Choi

et al. 2019

Animals

“…In the experiment, three nutria colour types were used: Standard (ST), Moravian Silver (MS), and Prestice Multicolour (PM). The detailed characteristics of different nutria genotypes are described by Kaplanova et al (2012). The nutrias were fattened from weaning at two months of age until they were eight months old, in conditions described by Tumova et al (2015).…”

Section: Methodsmentioning

confidence: 99%

Relationship between muscle fibre characteristics and meat sensory properties in three nutria (Myocastor coypus) colour types

Tůmová¹,

Chodová²,

Uhlířová³

et al. 2016

CZECH J ANIM SCI

AbstRAct:The study determined the muscle fibre characteristics and sensory properties of the longissimus lumborum muscle (LL) of eight-month-old nutrias of three colour types and the correlations between meat histochemical measurements and eating quality. The following nutria colour types were used in the experiment: Standard (ST), Moravian Silver (MS), and Prestice Multicolour (PM). The nutria colour type significantly (P < 0.001) affected the number of type IIB fibres with the lowest number in ST (108 per mm 2 ). The proportion of type I fibres varied between 10.6 and 14.2%; type IIA fibres varied between 6.1 and 7.8%; and type IIB fibres varied between 78.2 and 83.4% and it was not affected by colour type. The cross-sectional area (CSA) was 2.565-2.841 µm 2 in type I, 2.867-3.010 µm 2 in type IIA, and 4.698-5.517 µm 2 in type IIB fibres. The CSA of type IIB fibres (P < 0.001) was the largest in ST. The sensory trait of tenderness (P < 0.05) was the lowest in MS. Correlations between the proportion of fibres and sensory traits were not observed. The CSA of type I fibres correlated with flavour (0.19) and the CSA of type IIB fibres with tenderness (0.10).

Genetic diversity and relatedness in captive collared peccaries Dicotyles tajacu (Linnaeus, 1758) (Cetartiodactyla: Tayassuidae) estimated by microsatellite genotyping using high‐throughput sequencing: Implications for their conservation and reintroduction

et al. 2023

The global population of Dicotyles tajacu (Linnaeus, 1758) (Cetartiodactyla: Tayassuidae), commonly known as the collared peccary and distributed in the Neotropics, is currently in decline due to anthropogenic pressures. In this study, five microsatellite loci were used to genetically characterize a group of 20 captive‐born collared peccaries intended for reintroduction. This study aimed to evaluate the genetic diversity and relatedness of captive individuals using microsatellite markers. The genetic data generated were used to evaluate the viability of the reintroduction and to propose measures for the management and conservation of this species. In this study, we found relatively high genetic diversity indices, indicating that the group was genetically diverse. Inbreeding coefficients with negative values were observed, indicating an excess of alleles in heterozygosis and an absence of inbreeding. One locus showed deviation from Hardy–Weinberg equilibrium, which may have been caused by the mixing of individuals from different origins. Relatedness analysis indicated that some individuals were highly related, with coefficients indicating they may be first‐degree relatives. Our findings indicate that the studied group has enough genetic diversity to be released into nature, but the high individual relatedness found would require the adoption of strategies after the release of animals in the wild to ensure their persistence.