scholarly journals A review of methods for estimating mortality due to parasites in wild fish populations

1984 ◽  
Vol 37 (1-4) ◽  
pp. 53-64 ◽  
Author(s):  
R. J. G. Lester
Keyword(s):  
Wild Fish ◽  
Fish Populations

Passive gear-induced timidity syndrome in wild fish populations and its potential ecological and managerial implications

2016 ◽  
Vol 18 (2) ◽  
pp. 360-373 ◽  
Author(s):  
Robert Arlinghaus ◽  
Kate L Laskowski ◽  
Josep Alós ◽  
Thomas Klefoth ◽  
Christopher T Monk ◽  
...  
Keyword(s):  
Wild Fish ◽  
Fish Populations ◽  
Managerial Implications

Genetic Improvement of Wild Fish Populations

Science ◽  
1978 ◽  
Vol 201 (4361) ◽  
pp. 1090-1094 ◽  
Author(s):  
R. Moav ◽  
T. Brody ◽  
G. Hulata
Keyword(s):  
Genetic Improvement ◽  
Wild Fish ◽  
Fish Populations

scholarly journals Molecular Identification and Characterization of Vibrio Species and Mycobacterium Species in Wild and Cultured Marine Fish from the Eastern Mediterranean Sea

2020 ◽  
Vol 8 (6) ◽  
pp. 863 ◽  
Author(s):  
Yael Regev ◽  
Nadav Davidovich ◽  
Ran Berzak ◽  
Stanley C. K. Lau ◽  
Aviad P. Scheinin ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Marine Fish ◽  
Eastern Mediterranean ◽  
Vibrio Species ◽  
Wild Fish ◽  
Fish Populations ◽  
Pathogenic Microorganisms ◽  
Mycobacterium Species ◽  
Eastern Mediterranean Sea ◽  
Significant Difference

In contrast to numerous documented pathogens and infectious diseases of aquaculture, there is a lack of baseline data and information regarding pathogenic agents’ prevalence in wild marine fish populations. This study focused on two common fish pathogenic microorganisms, namely Mycobacterium species and Vibrio species, both of which are known to be major causes of fish loss, occasionally to the extent of being a limiting factor in fish production. Both microorganisms are known as zoonotic agents. In total, 210 wild marine indigenous and Lessepsian fish from four different species from the eastern Mediterranean Sea were sampled and tested for Vibrio species and Mycobacterium species during a two-year period (2016–2017). Using PCR with 16S rRNA primers, we detected different strain variations of Mycobacterium species and Vibrio species and, based on the sequencing results, the overall prevalence for Vibrio species in wild fish in 2016 was significantly higher compared to 2017. No significant difference was detected for Mycobacterium species prevalence in wild fish between 2016 and 2017. In addition, 72 gilthead seabream (Sparus aurata) from an Israeli offshore marine farm were also examined during the two-year period (2017–2018). The results suggest that Mycobacterium species prevalence was significantly higher in 2018, while in 2017 there was no positive results for Mycobacterium species. In addition, there was no significant difference between both years in regard to the prevalence of Vibrio species for maricultured fish. These results highlight the necessity of continuous molecular monitoring in order to evaluate the prevalence of pathogenic microorganisms in both wild and cultured fish populations.

scholarly journals Genome-wide target enriched viral sequencing reveals extensive ‘hidden’ salmonid alphavirus diversity in farmed and wild fish populations

Aquaculture ◽  
2020 ◽  
Vol 522 ◽  
pp. 735117 ◽  
Author(s):  
Michael D. Gallagher ◽  
Iveta Matejusova ◽  
Neil M. Ruane ◽  
Daniel J. Macqueen
Keyword(s):  
Wild Fish ◽  
Fish Populations ◽  
Genome Wide ◽  
Viral Sequencing

scholarly journals Contemporary loss of genetic diversity in wild fish populations reduces biomass stability over time

2019 ◽  
Author(s):  
Jérôme G. Prunier ◽  
Mathieu Chevalier ◽  
Allan Raffard ◽  
Géraldine Loot ◽  
Nicolas Poulet ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Biomass Production ◽  
Biomass Productivity ◽  
Wild Fish ◽  
Fish Populations ◽  
Ecosystem Functions ◽  
Intraspecific Genetic Diversity ◽  
Explained Variance ◽  
Demographic Surveys ◽  
Over Time

AbstractTheory predicts that biodiversity is causally linked to key ecological functions such as biomass productivity, and that loss in functional traits both among- and within-species can reduce the efficiency of ecosystem functions. There has been ample empirical and experimental demonstration that species loss indeed reduces the efficiency of ecosystem functions, with tremendous impacts on services provided by biodiversity. Nonetheless, and despite the fact that within-species diversity is strongly altered by human activities, there have been little attempts to empirically test (i) whether intraspecific genetic diversity actually promotes productivity and stability in wild populations, and, (ii) if so, to quantify its relative importance compared to other determinants. Capitalizing on 20-year demographic surveys in wild fish populations, we show that genetic diversity does not increase mean biomass production in local populations, but strongly and consistently stabilizes biomass production over time. Genetic diversity accounts for about 20% of explained variance in biomass stability across species, an important contribution about half that of environment and demography (about 40% each). Populations having suffered from demographic bottlenecks in the recent past harbored lower levels of genetic diversity and showed less stability in biomass production over the last 20 years. Our study demonstrates that the loss of intraspecific genetic diversity can destabilize biomass productivity in natural vertebrate populations in just a few generations, strengthening the importance for human societies to adopt prominent environmental policies to favor all facets of biodiversity.

Effects of chronic metal exposure on wild fish populations revealed by high-throughput cDNA sequencing

Ecotoxicology ◽  
2011 ◽  
Vol 20 (6) ◽  
pp. 1388-1399 ◽  
Author(s):  
Fabien Pierron ◽  
Eric Normandeau ◽  
Michel Amery Defo ◽  
Peter G. C. Campbell ◽  
Louis Bernatchez ◽  
...  
Keyword(s):  
High Throughput ◽  
Wild Fish ◽  
Fish Populations ◽  
Metal Exposure ◽  
Cdna Sequencing

scholarly journals Individual-based model evaluation of using vaccinated hatchery fish to minimize disease spread in wild fish populations

Ecosphere ◽  
2018 ◽  
Vol 9 (2) ◽  
pp. e02116
Author(s):  
Lori N. Ivan ◽  
Travis O. Brenden ◽  
Isaac F. Standish ◽  
Mohamed Faisal
Keyword(s):  
Model Evaluation ◽  
Wild Fish ◽  
Fish Populations ◽  
Disease Spread ◽  
Individual Based Model ◽  
Hatchery Fish

scholarly journals Effects of aquaculture on wild fish populations: a synthesis of data

2005 ◽  
Vol 13 (4) ◽  
pp. 145-168 ◽  
Author(s):  
Laura K Weir ◽  
James WA Grant
Keyword(s):  
Atlantic Salmon ◽  
Artificial Selection ◽  
Scientific Literature ◽  
Current Data ◽  
Wild Fish ◽  
Fish Populations ◽  
Negative Consequences ◽  
Wild Populations ◽  
Farmed Fish ◽  
In The Wild

The potential adverse environmental effects of aquaculture have been the subject of considerable attention in both the media and the scientific literature. We undertook a synthesis of the published scientific literature, primarily concerning Atlantic salmon (Salmo salar), to assess the current data available regarding these potential effects. No data are available to test for the direct effects of aquaculture organisms on the demographics of wild fish populations. However, seven studies show that escaped salmon in the wild have lower fitness, as measured by survival and reproductive success, than native salmon. Thirteen other studies, encompassing 91 different traits, provide strong evidence of phenotypic differences between farmed and wild salmon, presumably because of artificial selection in the aquaculture environment. An additional 10 studies have documented significant genetic differences between farmed salmon and the wild fish with which they will interact, or potentially interact. Given the paucity of data regarding actual population consequences of escaped farmed fish on wild populations, and the documented differences between the two types of fish, it seems prudent to treat farmed fish as exotic species with potentially negative consequences for wild populations, particularly when the latter are of conservation concern.Key words: aquaculture, Atlantic salmon, artificial selection, fitness, introgression.

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