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1.
Prioritizing fishery management for loggerhead turtle (Caretta caretta) conservation in the northern Adriatic Sea from reproductive value analysis
Bojan Lazar, Selina S. Heppell, 2009, published professional conference contribution abstract

Abstract: Fisheries bycatch often affects particular size classes of turtles. Because of the late age at maturity, the reproductive value (RV) of small juvenile, large juvenile and adult loggerheads vary by orders of magnitude. RV provides a relative measure of value for individuals, thereby allowing us to estimate the effects of different stressors based on the number of animals killed. Using RV as a comparative index, we assessed the relative impact of trawl and gillnet fi sheries operating in the northern Adriatic Sea on loggerhead populations. We tested several scenarios for bycatch in both fi sheries which signifi cantly differs in the size of captured animals and mortality. Despite high bycatch rates, bottom trawl fi sheries result in direct death of fewer loggerheads (156-260 vs. 346-486 in gill nets), but affect individuals that are older and hence have higher RVs. Because of data limitations for vital rates and bycatch estimates, we looked at a distribution of potential impact for each fi shery. Lessons learned include the need for relative impact assessment because of the sensitivity of adult RV to parameters such as clutch frequency, sex ratio and remigration interval. We anticipate that our analysis will help managers prioritize needs for regulation and mitigation among different fi sheries.
Found in: ključnih besedah
Summary of found: ...sea turtles, bycatch, population modelling, reproductive values, marine conservation, ...
Keywords: sea turtles, bycatch, population modelling, reproductive values, marine conservation
Published: 15.10.2013; Views: 1995; Downloads: 26
URL Full text (0,00 KB)
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Population genetics of chamois in the contact zone between the Alps and the Dinaric Mountains
Elena Bužan, Josef Bryja, Barbora Zemanová, Boris Kryštufek, 2013, original scientific article

Abstract: The chamois is a habitat specialist ungulate occupying continental archipelagos of fragmented rocky habitats which are frequently restricted to high altitudes. It is not clear whether forest habitats separating such population fragments act as barriers to gene flow. We studied the genetic makeup of the chamois in a topographically diverse landscape at the contact zone of two mountain ranges in Slovenia. Based on sequences of mitochondrial DNA, all Slovenian populations belong to a Northern chamois (Rupicapra r. rupicapra) subspecies. The range of chamois in Slovenia encompasses three different regions, each with unique topography, habitat connectivity and abundance of chamois: the Alps, the Dinaric Mts., and the Pohorje Mts. The habitat of the chamois is extensive and more or less continuous in the Alps, but suboptimal and fragmented in the remaining regions. In agreement with neutral genetic theory, large Northern chamois populations tended to have higher allelic richness and observed heterozygosity. Spatial clustering bears the differentiation into four geographically associated clusters within Slovenia and also revealed a strong substructure within all mountain ranges with suboptimal chamois habitat. Surprisingly, some small Dinaric populations have stayed genetically isolated in restricted habitat patches, even if they are geographically very close to each other. The four clusters, each having a unique demographic history, should be regarded as independent units for management purposes.
Found in: ključnih besedah
Summary of found: Zadetek v naslovu
Keywords: Rupicapra rupicapra, Chamois, population structure, microsatellites, fragmentation, conservation management
Published: 15.10.2013; Views: 1925; Downloads: 28
URL Full text (0,00 KB)

4.
Microsatellite markers confirm extensive population fragmentation of the endangered Balkan palaeoendemic Martino's vole (Dinaromys bogdanovi)
Elena Bužan, Boris Kryštufek, Josef Bryja, 2010, original scientific article

Abstract: The Martino's vole is an endangered rodent endemic to the western Balkan Peninsula. Its range is fragmented, and populations are small due to high habitat specificity. The level of genetic variation within such populations is often low, and genetic differentiation between patchily dispersed populations is high. By scoring eight microsatellite loci in 110 individual Martino's voles originating from 27 locations throughout the species range, we analysed genetic variation at both the intra- and interpopulation level. Factorial correspondence analysis, Bayesian analyses, and allele sharing distances divided individuals into three phylogroups (Northwestern, Central, and Southeastern), thus providing independent support for phylogeographic structuring, a pattern that has been described in previous studies based on mitochondrial DNA. Spatial genetic analyses showed that populations are highly fragmented, even in those areas with the highest population densities. The highest intrapopulation genetic variability and stable effective population sizes were found in Mount Zelengora (Bosnia and Herzegovina), which harbours a relatively large population of Martino's voles. Populations in the Central and Southeastern lineages exhibited a significant isolation-by-distance pattern, indicating limited gene flow between them. Contrary to previous opinion, low effective population size and very limited gene flow between remaining populations suggest that the long-term existence of the Martino's vole might not be secure, even in populations that live in optimal habitats. The only threat to the Martino's vole identified thus far is competitive exclusion by the European snow vole. However, our results suggest that conservation problems associated with this paleoendemic rodent are more complex
Found in: ključnih besedah
Summary of found: Zadetek v naslovu
Keywords: Dinaromys bogdanovi, Martino's vole, population structure, conservation management, spatial genetics, metapopulation
Published: 15.10.2013; Views: 1689; Downloads: 44
URL Full text (0,00 KB)

5.
Genetic structure and contrasting selection pattern at two major histocompatibility complex genes in wild house mouse populations
D. Čížková, J. Gouy de Bellocq, Stuart JE Baird, Jaroslav Piálek, Josef Bryja, 2011, original scientific article

Found in: ključnih besedah
Summary of found: ...house mouse, MHC, population structure, trans-species polymorphism, ...
Keywords: house mouse, MHC, population structure, trans-species polymorphism
Published: 15.10.2013; Views: 1192; Downloads: 52
URL Full text (0,00 KB)

6.
Multiple pleistocene refugia and post-glacial colonization in the European chub (Squalius cephalus) revealed by combined use of nuclear and mitochondrial markers
Mária Seifertová, Josef Bryja, Martina Vyskočilová, Natália Martínková, Andrea Šimková, 2012, original scientific article

Abstract: To analyse patterns of nuclear and mitochondrial genetic variation in the European chub, Squalius cephalus (Linnaeus, 1758), in order to understand the evolutionary history of this species and to test biogeographical hypotheses for the existence of co-distributed European freshwater fish species
Found in: ključnih besedah
Summary of found: ...cephalus, glacial refugia, Cytochrome b, microsatellites, phylogeography, population structure, Europe, ...
Keywords: freshwater fish, European chub, Squalius cephalus, glacial refugia, Cytochrome b, microsatellites, phylogeography, population structure, Europe
Published: 15.10.2013; Views: 1417; Downloads: 75
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7.
Disability-adjusted life years (DALYs) for 291 diseases and injuries in 21 regions, 1990-2010
Diego De Leo, Christopher J. L. Murray, Theo Vos, Rafael Lozano, Mohsen Naghavi, Abraham D Flaxman, Catherine Michaud, Majid Ezzati, Kenji Shibuya, Joshua A. Salomon, Safa Abdalla, 2012, original scientific article

Found in: ključnih besedah
Summary of found: ...public health, risk-factors, economic cost, mortality, population, Australia, countries, death, lost, meta-analysis, ...
Keywords: public health, risk-factors, economic cost, mortality, population, Australia, countries, death, lost, meta-analysis
Published: 15.10.2015; Views: 1055; Downloads: 52
URL Full text (0,00 KB)

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Global pollution (PCB) hotspots and European dolphin declines
Tilen Genov, Paul C. Jepson, 2015, published scientific conference contribution abstract

Found in: ključnih besedah
Summary of found: ...PCB, pollution hotspots, dolphins, European Seas, monitoring, population declines, ...
Keywords: sea pollution, PCB, pollution hotspots, dolphins, European Seas, monitoring, population declines
Published: 15.10.2015; Views: 1311; Downloads: 28
URL Full text (0,00 KB)
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