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Fluorescence of muscle and connective tissue from cod and salmon 总被引：1，自引：0，他引：1
Autofluorescence of salmon and cod muscle was measured and compared with autofluorescence of collagen type I and type V. Similarities between fluorescence of fish muscle and collagen were found in that the same peaks were obtained around 390, 430, and 480 nm. These similarities are supported by principal component analyses. Texture and gaping score were predicted from the fluorescence spectra by partial least-squares regression. However, the predictions did not perform well. Relating fluorescence to the gaping score gave a prediction error of 0.91 and a correlation of 0.43 when measuring gaping on a scale from 0 to 5. There was no relation between texture and fluorescence spectra. Fluorescence of fish muscle could be related to the storage time. However, this relation seemed not to be induced by changes in collagen. 相似文献
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EPPO member countries requested that a study be conducted to identify and better address the risks presented by the trade of plants for planting, which has led to numerous introductions of pests into the EPPO region in recent years. Concerns were raised about the efficacy of the current plant health systems in place in the EPPO region to deal with the risks presented by plants for planting. The EPPO Study on the Risk of Imports of Plants for Planting was launched by the EPPO Council in 2010. The first part of the Study was completed in spring 2012. It was published as EPPO Technical Document 1061 ( http://www.eppo.int/QUARANTINE/EPPO_Study_on_Plants_for_planting.pdf ). Examples of pest outbreaks in the EPPO region suspected to be caused by international trade of plants for planting were analyzed. This analysis identified characteristics of the pest/crop/trade patterns associated with the risks of importing pests. These characteristics are described as criteria that are intended to be used in a screening process to enable identification of commodities that require an assessment prior to import in the EPPO region. The further elaboration of the screening process is briefly outlined. 相似文献
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Ana T. Silva Martyn C. Lucas Theodore Castro‐Santos Christos Katopodis Lee J. Baumgartner Jason D. Thiem Kim Aarestrup Paulo S. Pompeu Gordon C. O'Brien Douglas C. Braun Nicholas J. Burnett David Z. Zhu Hans‐Petter Fjeldstad Torbjørn Forseth Nallamuthu Rajaratnam John G. Williams Steven J. Cooke 《Fish and Fisheries》2018,19(2):340-362
Much effort has been devoted to developing, constructing and refining fish passage facilities to enable target species to pass barriers on fluvial systems, and yet, fishway science, engineering and practice remain imperfect. In this review, 17 experts from different fish passage research fields (i.e., biology, ecology, physiology, ecohydraulics, engineering) and from different continents (i.e., North and South America, Europe, Africa, Australia) identified knowledge gaps and provided a roadmap for research priorities and technical developments. Once dominated by an engineering‐focused approach, fishway science today involves a wide range of disciplines from fish behaviour to socioeconomics to complex modelling of passage prioritization options in river networks. River barrier impacts on fish migration and dispersal are currently better understood than historically, but basic ecological knowledge underpinning the need for effective fish passage in many regions of the world, including in biodiversity hotspots (e.g., equatorial Africa, South‐East Asia), remains largely unknown. Designing efficient fishways, with minimal passage delay and post‐passage impacts, requires adaptive management and continued innovation. While the use of fishways in river restoration demands a transition towards fish passage at the community scale, advances in selective fishways are also needed to manage invasive fish colonization. Because of the erroneous view in some literature and communities of practice that fish passage is largely a proven technology, improved international collaboration, information sharing, method standardization and multidisciplinary training are needed. Further development of regional expertise is needed in South America, Asia and Africa where hydropower dams are currently being planned and constructed. 相似文献
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A survey on the use of EPPO diagnostic protocols was conducted in the summer of 2008. Approximately 90 laboratories that were registered in the EPPO database on Diagnostic Expertise were asked to indicate the number of samples that they tested during the year 2007 and which recommended test, or other test, they used. The survey was organized on a selection of 58 diagnostic protocols in all disciplines of plant health diagnosis (bacteriology, mycology, entomology, nematology, virology and phytoplasmology). Forty-four laboratories from 20 EPPO countries responded. The results are presented for 12 protocols giving the number of tests used for diagnosis. From this survey it can be concluded that many of the tests for detection mentioned in EPPO diagnostic protocols are widely used in plant pest diagnostic laboratories in the EPPO Region. 相似文献
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In 2004, the EPPO Council expressed profound concerns about the decreasing expertise in plant protection and declared a state of emergency for Plant Health (‘Madeira declaration’). As diagnostics is one of the scientific fields which are vital for sustaining sound plant health policies, a questionnaire was launched and all EPPO member countries were asked to provide information about their diagnostic expertise, focusing on regulated pests or pests which may present a risk to the EPPO region. In 2006, results of the questionnaire were analysed and compiled by the EPPO Secretariat into a new database. This database now contains detailed information (contact addresses, quality programmes, and accreditations) for 80 diagnostic laboratories from 28 EPPO member countries. More than 500 experts are now registered with details about their diagnostic expertise (pests diagnosed and methods used). The EPPO database on diagnostic expertise can be freely accessed on the Internet: http://dc.eppo.org . 相似文献
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For the last 8 years, EPPO has run a European Panel on diagnostics, which has developed regional standards on diagnostic protocols. Nearly 60 such standards have now been approved, and are in active use in EPPO countries. In 2004, the Interim Commission for Phytosanitary Measures (ICPM) of FAO, in reviewing global needs for International Standards for Phytosanitary Measures (ISPMs), recognized that there is a strong interest in developing diagnostic protocols for all IPPC contracting parties. Such protocols would support the harmonization of detection and identification procedures worldwide, contribute to greater transparency and comparability in the diagnostics of regulated pests, and assist in the resolution of disputes between trading partners. In addition, such protocols would constitute a very good material for technical assistance. In 2004, the ICPM adopted a mechanism for more rapid development of ISPMs in specific areas, suitable particularly for diagnostic protocols. A Technical Panel to develop protocols for specific pests was also established and met for the first time in September 2004. A format for international diagnostic protocols was prepared, together with a list of priority pests. 相似文献