7 documents found, page 1 of 1

Genetic Structure and Diversity of Brown Trout (Salmo trutta L.) in Portugal

Population genetic studies have been extensively used as tools for the management and conservation of salmonid species and related habitats. The brown trout, Salmo trutta (Linnaeus 1758), is one of the most studied species within its family, and is frequently used as a population model. It can have a highly complex and variable life history, often presenting a migratory ecotype (i.e., sea trout), and it is cons...

Chitosan nano/microformulations for antimicrobial protection of leather with a ...

Tanned leather can be attacked by microorganisms. To ensure resistance to bacteria on leather surfaces, protection solutions need to be developed, addressing both environmental issues and economic viability. In this work, chitosan nano/microparticles (CNP) and chitosan/silver nano/microstructures (CSNP), containing silver nanoparticles around 17 nm size, were incorporated into leather, obtained from the industr...

Editorial: natural compounds in food safety and preservation

A ranking system for reference libraries of DNA barcodes: application to marine...

The increasing availability of reference libraries of DNA barcodes (RLDB) offers the opportunity to the screen the level of consistency in DNA barcode data among libraries, in order to detect possible disagreements generated from taxonomic uncertainty or operational shortcomings. We propose a ranking system to attribute a confidence level to species identifications associated with DNA barcode records from a RLD...

A Ranking system for reference libraries of DNA Barcodes: application to marine...

Background: The increasing availability of reference libraries of DNA barcodes (RLDB) offers the opportunity to the screen the level of consistency in DNA barcode data among libraries, in order to detect possible disagreements generated from taxonomic uncertainty or operational shortcomings. We propose a ranking system to attribute a confidence level to species identifications associated with DNA barcode record...

Allocation of nutrients during the reproductive cycle of Ophidiaster ophidianus...

The reproductive cycle of Ophidiaster ophidianus (strictly protected status) from Sa˜o Miguel Island, in the Azorean Archipelago was studied. The reproductive strategy; the energy allocation of each sex during the reproductive cycle and the nutritional condition of the population were analyzed. Gonadal index (GI) showed a clear seasonal pattern with spawning between August and October but histological examinati...

Evolutionary history of lamprey paired species Lampetra fluviatilis (L.) and La...

A remarkable trend in the evolution of lampreys is the occurrence in most genera of ‘paired species’, in which the parasitic anadromous lampreys are believed to have given rise to nonparasitic freshwater resident populations. The present work examines the phylogeography of the European paired species Lampetra fluviatilis and Lampetra planeri , in an attempt to elucidate species pair evolutionary history. We stu...