Conservation of freshwater fish in the British Isles: The current status and biology of threatened species

Maitland, Peter S.; Lyle, A. A.

doi:10.1002/aqc.3270010104

Cited by 72 publications

(58 citation statements)

References 33 publications

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“…Schulz et al [27] based on the nucleotide sequence of a short D-loop segment (328 bp) in Coregonidae, identified as many as 10 haplotypes. Reed et al [46] by analysing the complete D-loop, reported 4 length variants resulting from duplication of single D-loop segments in the investigated Coregonus species, but also demonstrated a high variability of this region resulting from nucleotide substitutions and indel mutations.…”

Section: Discussionmentioning

confidence: 98%

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Genetic structure of the cisco (Coregonus albula L.) from lakes of glacial origin in northern Poland

et al. 2015

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European cisco (Coregonus albula L.) is one of the most precious species of the European lake ichtyofauna, however, due to progressive eutrophication of water, the range of its occurrence has decreased. Deteriorating ecological conditions are the main cause of this decline in population, and most of the existing populations in lakes are maintained thanks to reintroduction. Thus, it is important to determine the genetic structure of the European cisco. The study involved PCR-RFLP-based genetic analysis of C. albula caught in 15 lakes in northern Poland, including four lakes located in national parks. The analysis covered 3 genes located in the mitochondrial DNA: ND1, ND3/4 and cytochrome b, as well as a control region (D-loop). The PCR product was digested with 4 endonucleases (RsaI, MspI, BsuI and HhaI) and the resulting haplotypes were grouped into combinations. Statistical analysis were then performed on these groups. Based on the genetic distance, a phenogram was constructed in which two groups could be distinguished. One group was represented by C. albula populations from most lakes in north-western Poland, including the three protected lakes. The other group consisted of the European cisco population from Lake Wigry (north-eastern Poland) and commercially exploited lakes from the southern part of the investigated north-western Poland area. The results of the study of C. albula from northern Poland present a valuable molecular characterization of the populations and can be a starting point for further genetic monitoring.

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Section: Discussionmentioning

confidence: 98%

“…The European cisco is a valuable species, for many years covered by programmes of renewal and reintroduction, e.g., in Poland, Scotland, England and Germany [46][47][48]. This is necessary, as the natural populations are reduced due to the deteriorating quality of water and currently constitute a small fraction of the total population [10].…”

Section: Discussionmentioning

confidence: 99%

Genetic structure of the cisco (Coregonus albula L.) from lakes of glacial origin in northern Poland

et al. 2015

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“…Thirty seven of the 55 freshwater fish species on the British list are found in NNRs. The majority of the fish found, however, are those most common in Great Britain and only three of the 10 species under greatest threat (Maitland and Lyle, 1991) occur in NNRs.…”

Section: National Nature Reservesmentioning

confidence: 99%

Conservation of freshwater fish in the British Isles: Proposals for management

Maitland¹,

Lyle²

1992

Aquatic Conservation

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ABSTRACT1 . Recent checklists of the freshwater fish of the British Isles have included 42 native and 13 introduced species. Of the former, however, two are extinct now and eight are threatened in various ways. In addition there are several important stocks of common native species under threat.2. Protection for British fish exists mainly through legislation and protected sites of various designations. The legislation is inadequate in some respects and very few of the protected sites were actually established for their fish interest. Nevertheless, in Great Britain, 37 species of fish occur in National Nature Reserves. The overall status of fish in Sites of Special Scientific Interest is unknown. 3.The main conservation options for managing freshwater fish resources are habitat restoration, stock transfer to new sites, captive breeding and cryopreservation. The first two of these are regarded as the most useful for the long-term conservation of threatened species. Improved legislation would also help, especially in relation to preventing the import and transfer of potentially harmful species.4. As well as the implementation of conservation management programmes for rare fish, research and monitoring studies are also needed in order to aid management and maintain a watch on populations of important species. In addition, national fish databases and registers of important stocks are an important background for overall fish conservation and management.

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“…Of these, nine are category E species (seven of which have been introduced to this country and are therefore of questionable conservation concern -see Maitland and Lyle, 1991a) one is in category D (Spined Loach) and one is category I (Sturgeon). None of the three category A species -Allis Shad, Twaite Shad and Vendace -occurs in NNRs.…”

Section: -7mentioning

confidence: 99%

Conservation of freshwater fish in the British Isles: the status of fish in national nature reserves

Lyle¹,

Maitland²

1992

Aquatic Conservation

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I .To consider fully the conservation management of freshwater fish, it was important to know which fish were already in the protected environment of National Nature Reserves (NNRs) -the principal sites for nature conservation in Great Britain. For this reason, 235 NNRs declared by the Nature Conservancy Council (NCC) were surveyed for freshwater fish between 1987 and 1990 by questionnaires to the wardens, by compiling data from other sources, and, where necessary, by field sampling. The presence of fresh waters (as lakes, ponds, rivers and streams) was also recorded. The survey was organized to follow the country and regional structure by which nature conservation was administered by the NCC so that the results could be considered accordingly.2. Seventy five percent of NNRs contain fresh waters and, of these, just over 20% have no fish. Of the 51 fish species available 37 (73%) were recorded in NNRs. NCC regions with most fish species are: SW Scotland, West Midlands and East Anglia, but NW Scotland has the highest total of species occurrences in NNRs. In terms of both the numbers of species and their frequency of occurrence, NW and NE England are notably the lowest. The most common fish in NNRs are Eels, Brown Trout and Three-spined Sticklebacks.3. The results for species and for sites (NNRs) are discussed from the viewpoint of fish conservation. The majority of fish in NNRs are those most common in Great Britain. Two of the species recorded (Powan and Smelt) are currently important for conservation, but several of those most threatened do not occur in NNRs. A number of NNRs have diverse fish communities, but only six have significant fish conservation value, of which Loch Lomond NNR is outstanding.4. There is considerable scope through NNR management to improve fish conservation and it is suggested that the acquisition of new reserves for threatened species should be considered.

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Conservation of freshwater fish in the British Isles: The current status and biology of threatened species

Cited by 72 publications

References 33 publications

Genetic structure of the cisco (Coregonus albula L.) from lakes of glacial origin in northern Poland

Genetic structure of the cisco (Coregonus albula L.) from lakes of glacial origin in northern Poland

Conservation of freshwater fish in the British Isles: Proposals for management

Conservation of freshwater fish in the British Isles: the status of fish in national nature reserves

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