Atlantic salmon restoration in the Great Lakes as an example of
... Atlantic salmon restoration in the Great Lakes as an example of species restoration Chris Wilson Aquatic Research Section Ontario Ministry of Natural Resources ...
... Atlantic salmon restoration in the Great Lakes as an example of species restoration Chris Wilson Aquatic Research Section Ontario Ministry of Natural Resources ...
Damaging effect of the fish pathogen Aeromonas salmonicida ssp
... Historically, Aeromonas salmonicida ssp. salmonicida (A. salmonicida) has been recognised as the most important bacterial salmonid pathogen because of its severe economic impact especially on the aquaculture industry (Olivier 1997). Ever since the Furunculosis Committee considered the intestine as a ...
... Historically, Aeromonas salmonicida ssp. salmonicida (A. salmonicida) has been recognised as the most important bacterial salmonid pathogen because of its severe economic impact especially on the aquaculture industry (Olivier 1997). Ever since the Furunculosis Committee considered the intestine as a ...
Bitter harvest — rice fields and fish culture
... have been several international meetings in Asia in which ricefish farming has been promoted. But in my considered opinion, commercially profitable and sustained rice-fish farming in any credible form has yet to be demonstrated. The only sustained enterprise for raising aquatic animals for food at a ...
... have been several international meetings in Asia in which ricefish farming has been promoted. But in my considered opinion, commercially profitable and sustained rice-fish farming in any credible form has yet to be demonstrated. The only sustained enterprise for raising aquatic animals for food at a ...
Teachers` Notes
... Bioluminescence is light that is produced when a chemical reaction occurs within a living organism. It can be particularly useful to animals that live in dark areas where they need to make their own light to find food, find mates and to communicate with each other. Bioluminescent organisms are mostl ...
... Bioluminescence is light that is produced when a chemical reaction occurs within a living organism. It can be particularly useful to animals that live in dark areas where they need to make their own light to find food, find mates and to communicate with each other. Bioluminescent organisms are mostl ...
Antigenic properties and experimental transmission to several fish
... 1988). Hill and Way (1995) proposed the term ``aquatic birnavirus'' for those viruses isolated from non-salmonid ®sh for which there is no information on their ability to produce IPN disease in salmonids. A disease with high mortality affecting senegalense sole (S. senegalensis) characterized by dar ...
... 1988). Hill and Way (1995) proposed the term ``aquatic birnavirus'' for those viruses isolated from non-salmonid ®sh for which there is no information on their ability to produce IPN disease in salmonids. A disease with high mortality affecting senegalense sole (S. senegalensis) characterized by dar ...
The myth of hydroelectricity as "green" energy.
... The reduction in productivity is caused primarily by loss of the littoral region, the shallow land-water perimeter in the euphotic zone, in which light penetrates enough to provide plant growth, going from shallow areas with macrophytes, down to moss and algae covered substratum. This littoral depth ...
... The reduction in productivity is caused primarily by loss of the littoral region, the shallow land-water perimeter in the euphotic zone, in which light penetrates enough to provide plant growth, going from shallow areas with macrophytes, down to moss and algae covered substratum. This littoral depth ...
Herbivory review
... If rays consume 200 g of shell fish per day, and spend 100 days/yr in Chesapeake, then the population will consume 840,000 tonnes/yr ...
... If rays consume 200 g of shell fish per day, and spend 100 days/yr in Chesapeake, then the population will consume 840,000 tonnes/yr ...
File - MR. Boroughs
... including “kissing” Gourami which feed and breathe in a manner giving the impression of kissing ...
... including “kissing” Gourami which feed and breathe in a manner giving the impression of kissing ...
Pikeminnow, Ptychocheilus lucius, is a torpedo
... rivers. They are referred to as piscivorous, for they prey on all fish smaller than themselves. But historical accounts suggest that they would also take small mammals swimming in the rivers, for early fishermen used mice and even rabbits for bait. They have been reported to gulp ducklings. Adult pi ...
... rivers. They are referred to as piscivorous, for they prey on all fish smaller than themselves. But historical accounts suggest that they would also take small mammals swimming in the rivers, for early fishermen used mice and even rabbits for bait. They have been reported to gulp ducklings. Adult pi ...
http://www.fao.org/docrep/meeting/020/al373e.pdf
... species loss will occur in poor countries (Xenopoulous 20059). Flash floods may wash eggs and fry out of their normal habitats thereby increasing chances that they will die from starvation or predation. Increased water temperatures will affect fish physiological processes and thus their ecological f ...
... species loss will occur in poor countries (Xenopoulous 20059). Flash floods may wash eggs and fry out of their normal habitats thereby increasing chances that they will die from starvation or predation. Increased water temperatures will affect fish physiological processes and thus their ecological f ...
PDF - Fisheries Conservation Foundation
... provide nursery habitats for many juvenile fish species (Mateo and Tobias, 2007). Nurseries supply food and shelter for young fish, allowing them to mature before they move on to deeper reefs (Mumby et al. 2004). Fishermen on Cape Eleuthera rely on reef fish as the sole source of income, which has ...
... provide nursery habitats for many juvenile fish species (Mateo and Tobias, 2007). Nurseries supply food and shelter for young fish, allowing them to mature before they move on to deeper reefs (Mumby et al. 2004). Fishermen on Cape Eleuthera rely on reef fish as the sole source of income, which has ...
Great Lakes Fisheries - University of Liverpool
... in the modern world, eutrophication does not normally happen in isolation: there can be many more factors involved. Perhaps the best example of this are the North American Great Lakes which have been greatly changed in many ways over the last 300 yrs. Increased nutrient input into a waterbody will h ...
... in the modern world, eutrophication does not normally happen in isolation: there can be many more factors involved. Perhaps the best example of this are the North American Great Lakes which have been greatly changed in many ways over the last 300 yrs. Increased nutrient input into a waterbody will h ...
SEISMOCONDITIONALITY OF REPRODUCTION AND
... emissions of methane, to which many aerophilic aquatic organisms have not become adapted evolutionally. In places with massive discharge of methane during earthquakes, juveniles and older fish die. The survivors disperse for several weeks and up to 1.5 months depending on the intensity of mixing, an ...
... emissions of methane, to which many aerophilic aquatic organisms have not become adapted evolutionally. In places with massive discharge of methane during earthquakes, juveniles and older fish die. The survivors disperse for several weeks and up to 1.5 months depending on the intensity of mixing, an ...
Application to Draw Off Water from Impoundments
... Providing the information described on this form will allow DEP to this review and approval or screening procedure while the draw down application is being processed. Often, the applicant has already submitted documentation for the proposed activity to a DEP office. The applicant should still comple ...
... Providing the information described on this form will allow DEP to this review and approval or screening procedure while the draw down application is being processed. Often, the applicant has already submitted documentation for the proposed activity to a DEP office. The applicant should still comple ...
Application and Permit to Draw Off Water from Impoundments
... Providing the information described on this form will allow DEP to this review and approval or screening procedure while the draw down application is being processed. Often, the applicant has already submitted documentation for the proposed activity to a DEP office. The applicant should still comple ...
... Providing the information described on this form will allow DEP to this review and approval or screening procedure while the draw down application is being processed. Often, the applicant has already submitted documentation for the proposed activity to a DEP office. The applicant should still comple ...
Trophic levels of multispecies in the Gulf of Thailand
... The mixed trophic impact routine as a tool for indicating the possible impact of direct and indirect interactions (including competition) in a steady-state system, not as an instrument for making predictions of what will happen in the future if certain interaction terms are changed. The major reason ...
... The mixed trophic impact routine as a tool for indicating the possible impact of direct and indirect interactions (including competition) in a steady-state system, not as an instrument for making predictions of what will happen in the future if certain interaction terms are changed. The major reason ...
Salmon Facts PDF
... Fall spawner; fall, spring, and summer runs Chinook salmon are the largest of the Pacific salmon, with some individuals growing to more than 100 pounds. These huge fish are rare, as most mature chinook are under 50 pounds. Spawning - Most chinook spawn in large rivers such as the Columbia and Snake, ...
... Fall spawner; fall, spring, and summer runs Chinook salmon are the largest of the Pacific salmon, with some individuals growing to more than 100 pounds. These huge fish are rare, as most mature chinook are under 50 pounds. Spawning - Most chinook spawn in large rivers such as the Columbia and Snake, ...
Myxobolus cerebralis
Myxobolus cerebralis is a myxosporean parasite of salmonids (salmon, trout, and their allies) that causes whirling disease in farmed salmon and trout and also in wild fish populations. It was first described in rainbow trout in Germany a century ago, but its range has spread and it has appeared in most of Europe (including Russia), the United States, South Africa and other countries. In the 1980s, M. cerebralis was found to require a tubificid oligochaete (a kind of segmented worm) to complete its life cycle. The parasite infects its hosts with its cells after piercing them with polar filaments ejected from nematocyst-like capsules.Whirling disease afflicts juvenile fish (fingerlings and fry) and causes skeletal deformation and neurological damage. Fish ""whirl"" forward in an awkward, corkscrew-like pattern instead of swimming normally, find feeding difficult, and are more vulnerable to predators. The mortality rate is high for fingerlings, up to 90% of infected populations, and those that do survive are deformed by the parasites residing in their cartilage and bone. They act as a reservoir for the parasite, which is released into water following the fish's death. M. cerebralis is one of the most economically important myxozoans in fish, as well as one of the most pathogenic. It was the first myxosporean whose pathology and symptoms were described scientifically. The parasite is not transmissible to humans.