Results 81 to 90 of about 3,269 (236)
Chitosan is highlighted for its industrial applications include food processing and preservation, pharmaceuticals, agriculture systems, and environmental protection. ABSTRACT Chitin, the natural biopolymer of the world next to cellulose, is a modified biodegradable polysaccharide.
Saeedeh Karimlar +4 more
wiley +1 more source
Burrowing behaviour of signal crayfish, Pacifastacus leniusculus (Dana), in the River Great Ouse, England [PDF]
Observations were made on crayfish burrows in five locations on the Great Ouse River. The burrow densities and the relative abundance of crayfish were observed.
Guan, Rui-Zhang
core
PCR detection of the crayfish plague pathogen in narrow-clawed crayfish inhabiting Lake Eğirdir in Turkey [PDF]
Many populations of the narrow-clawed crayfish Astacus leptodactylus in Turkey, including those inhabiting Lake Eğirdir, declined drastically in the mid-1980s due to introduction of crayfish plague Aphanomyces astaci. However, unlike many other localities, there has been some recovery in the A.
Kozubikova, E. +8 more
openaire +3 more sources
Migratory Songbirds as Potential Ectozoochorous Protist Dispersal Vectors
We demonstrate that migratory songbirds carry diatoms (Bacillariophyta) in their plumage, revealing an unexpected avian–algal association. All seven bird specimens we examined contained diatoms—224 frustules representing 25 genera and 9 orders, primarily freshwater, benthic pennates—some retaining chloroplasts prior to digestion and mounting (implying ...
Silas E. Fischer +4 more
wiley +1 more source
HAZARD ANALYSIS OF EXOTIC PATHOGENS OF POTENTIAL THREAT TO EUROPEAN FRESHWATER CRAYFISH.
Managers, scientists, fishermen and farmers who work with freshwater crayfish understand clearly the severe affects that the introduction of an exotic pathogen can have on freshwater crayfish populations.
EDGERTON B. F.
doaj +1 more source
Environmental valuation, ecosystem services and aquatic species [PDF]
The thesis consists of an introduction and four articles that can be read independently of each other. The common topic is environmental valuation and cost-benefit analysis.
Kataria, Mitesh
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Baseline Distribution of Invasive Alien Species of Union concern [PDF]
A current EU geographical distribution of spatial information for the 37 Invasive Alien Species (IAS) of Union concern (IAS Regulation 1143/2014) is set, based on the best available knowledge, resulting from an assessment of data aggregated through the ...
ADDAMO ANNA +6 more
core +1 more source
Variation in Resistance to the Invasive Crayfish Plague and Immune Defence in the Native Noble Crayfish [PDF]
Emerging diseases, such as the crayfish plague, are a worldwide problem with serious ecological and economic impacts. Under the framework of ecological immunology, we investigated whether variation in crayfish plague resistance, the indicators of immune defence (encapsulation response, phenoloxidase and lytic activity), and the exploration behaviour ...
Gruber, Christina +9 more
openaire +2 more sources
Since 1893, crayfish plague, Aphanomyces astaci Schikora, has devastated Finland’s most productive populations of the native noble crayfish, Astacus astacus, causing great losses to once very valuable fisheries and exports.
WESTMAN K., SAVOLAINEN R.
doaj +1 more source
Causative agent of the crayfish plague: Aphanomyces astaci Schikora, 1906 [PDF]
Riječni rakovi važan su element slatkovodnih ekosustava. U posljednjih 200 godina došlo je do drastičnog smanjenja brojnosti autohtonih vrsta riječnih rakova na području Europe.
Petrović, Ana
core

