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Predicting the abundance of Lepeophtheirus salmonis in the Bay of Fundy, New Brunswick.
J Aquat Anim Health
December 2024
Department of Health Management and Centre for Veterinary Epidemiological Research, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada.
Objective: The primary objective was to construct a time series model for the abundance of the adult female (AF) sea lice Lepeophtheirus salmonis in Atlantic Salmon Salmo salar farms in the Bay of Fundy, New Brunswick, Canada, for the period 2016-2021 and to illustrate its short-term predictive capabilities.
Methods: Sea lice are routinely counted for monitoring purposes, and these data are recorded in the Fish-iTrends database. A multivariable autoregressive linear mixed-effects model (second-order autoregressive structure) was generated with the outcome of the abundance of AF sea lice and included treatments, infestation pressures (a measure that represents the dose of exposure of sea louse parasitic stages to potential fish hosts) within sites (internal) and among sites (external), and other predictors.
Analyzing bacterial networks and interactions in skin and gills of Sparus aurata with microalgae-based additive feeding.
Sci Rep
December 2024
Department of Microbiology, Faculty of Sciences, CEI·MAR-International Campus of Excellence in Marine Science, University of Malaga, Málaga, Spain.
The inclusion of microalgae in functional fish diets has a notable impact on the welfare, metabolism and physiology of the organism. The microbial communities associated with the fish are directly influenced by the host's diet, and further understanding the impact on mucosal microbiota is needed. This study aimed to analyze the microbiota associated with the skin and gills of Sparus aurata fed a diet containing 10% microalgae.
View Article and Find Full Text PDFHOST SPECIES, HOST SIZE, AND MIRACIDIAL DOSE INFLUENCE THE INFECTION SUCCESS OF ECHINOSTOMA TRIVOLVIS LINEAGE C LARVAE.
J Parasitol
December 2024
Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2.
Completing parts of trematode life cycles in the laboratory is a useful way to obtain experimentally infected hosts and identify how specific aspects of parasitism influence host ecology and behavior. However, a lack of knowledge about host specificity and other factors that influence prevalence can hamper those efforts. Echinostoma trivolvis lineage c is a genetically distinct member of the E.
View Article and Find Full Text PDFEvidence for the importance of trophically transmitted parasites and predation at the lower latitudes of species ranges.
Proc Biol Sci
December 2024
Scripps Institution of Oceanography-Marine Biology Research Division, University of California San Diego, La Jolla, CA 92037, USA.
The lack of information concerning how parasitism maps onto host geographical distributions represents a striking gap in ecological knowledge. This knowledge gap limits our understanding of a wide range of phenomena, including the consequences of climate change-induced range shifts of both hosts and parasites. To help solve this problem, we created a predictive theoretical framework and quantified latitudinal variation in parasitism by animal and protozoan parasites throughout the entire contiguous geographical ranges of four estuarine fish species.
View Article and Find Full Text PDFMolecular identification and characterization of waterborne protozoa among stranded Dugong dugon.
Mar Pollut Bull
December 2024
Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar. Electronic address:
The Persian Gulf hosts the second-largest population of Dugongs. The International Union for the Conservation of Nature (IUCN) lists them as Vulnerable to Extinction species. Incidental fishing, vessel strikes, environmental pollution, habitat degradation, and infectious diseases currently threaten these sirenians.
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