western blue groper - Department of Fisheries
... groper are very inquisitive when they encounter divers. This behaviour makes them vulnerable to spearfishing, which can consequently lead to localised stock depletion. Fortunately, in recent years, many dive clubs and individual divers have become aware of the pressure on blue groper stocks and have ...
... groper are very inquisitive when they encounter divers. This behaviour makes them vulnerable to spearfishing, which can consequently lead to localised stock depletion. Fortunately, in recent years, many dive clubs and individual divers have become aware of the pressure on blue groper stocks and have ...
Great Lakes – Upper Mississippi
... the largest impacts on lake trout has been the introduction of non-native species, particularly the sea lamprey. While the sea lamprey was native to Lake Ontario, it was restricted to below Niagara Falls, at least until construction of the Welland Canal. Sea lampreys attach themselves to lake trout ...
... the largest impacts on lake trout has been the introduction of non-native species, particularly the sea lamprey. While the sea lamprey was native to Lake Ontario, it was restricted to below Niagara Falls, at least until construction of the Welland Canal. Sea lampreys attach themselves to lake trout ...
BINCKE: a highly efficient net for collecting reef fishes
... difficult because conventional collecting methods generally cannot be used and many of the fishes are mobile and active. We describe the design, operation, and application of a diver-propelled net for efficiently collecting many species of benthic fish that reside on coral reefs and on kelp-forested ...
... difficult because conventional collecting methods generally cannot be used and many of the fishes are mobile and active. We describe the design, operation, and application of a diver-propelled net for efficiently collecting many species of benthic fish that reside on coral reefs and on kelp-forested ...
SALMONID LIFE-CYCLE MONITORING
... their freshwater and marine survival. In addition, the small size of returning searun cutthroat trout adults makes them difficult to trap. Most returning searun cutthroat are small enough to swim through the upper picket fence in the adult trap. In most cases the spacing of the bars in the picket fe ...
... their freshwater and marine survival. In addition, the small size of returning searun cutthroat trout adults makes them difficult to trap. Most returning searun cutthroat are small enough to swim through the upper picket fence in the adult trap. In most cases the spacing of the bars in the picket fe ...
EXIT
... For example, in the photo above, the host flower benefits by being pollinated by the traveling butterfly. The symbiont butterfly benefits from the nectar that it extracts from the ...
... For example, in the photo above, the host flower benefits by being pollinated by the traveling butterfly. The symbiont butterfly benefits from the nectar that it extracts from the ...
When an `invasive` fish species fails to invade! Example of the
... gudgeon in establishing one or more (even numerous) populations in virtually every European country, it should not be assumed that all accidental introductions of the species have been or will be successful. This exemplifies that invasiveness potential will vary between ecoregions and among sites wi ...
... gudgeon in establishing one or more (even numerous) populations in virtually every European country, it should not be assumed that all accidental introductions of the species have been or will be successful. This exemplifies that invasiveness potential will vary between ecoregions and among sites wi ...
Parasite Rex - Gustavus Adolphus College
... The message that I believe Zimmer wants to portray is that parasites are more important than we think. They infect plants, animals, and humans and result in diseases such as malaria and elephantiasis, which have killed millions. Although we have the knowledge to stay clear and reverse our own afflic ...
... The message that I believe Zimmer wants to portray is that parasites are more important than we think. They infect plants, animals, and humans and result in diseases such as malaria and elephantiasis, which have killed millions. Although we have the knowledge to stay clear and reverse our own afflic ...
Uzarski et al June 2010 IJC-WL update report to Val_final
... • Variance in monthly water levels, in particular May, appear to have the most impact on fish abundance and diversity. – May WL variance was negatively associated with fish abundance in both the inner and outer Schoenoplectus zones, but was positively associated with fish assemblage evenness in the ...
... • Variance in monthly water levels, in particular May, appear to have the most impact on fish abundance and diversity. – May WL variance was negatively associated with fish abundance in both the inner and outer Schoenoplectus zones, but was positively associated with fish assemblage evenness in the ...
Improving the ecological understanding of species complexes: the
... understanding of their ecology. A typical case is the ‘cryptic’ carp gudgeon group Hypseleotris spp. in southeastern Australia, which is thought to comprise four closely related species occurring sympatrically within the Murray–Darling Basin (MDB), where flow delivery scenarios have been proposed fo ...
... understanding of their ecology. A typical case is the ‘cryptic’ carp gudgeon group Hypseleotris spp. in southeastern Australia, which is thought to comprise four closely related species occurring sympatrically within the Murray–Darling Basin (MDB), where flow delivery scenarios have been proposed fo ...
Goat Parasites
... • No wormers licensed for goats in Ireland • Goats metabolise drugs differently from sheep • Evidence to suggest higher dose rate required • 1-BZ & 3-ML – 2x sheep dose • 2-LV – 1.5x sheep dose (toxicity reported) ...
... • No wormers licensed for goats in Ireland • Goats metabolise drugs differently from sheep • Evidence to suggest higher dose rate required • 1-BZ & 3-ML – 2x sheep dose • 2-LV – 1.5x sheep dose (toxicity reported) ...
Entrainment and Impingement Studies: What you need to know about fishes
... You get lists of all taxa collected and these larvae can be placed into recurrent groups…. ...
... You get lists of all taxa collected and these larvae can be placed into recurrent groups…. ...
OFFSHORE AQUACULTURE AND THE FUTURE OF SEAFOOD PRODUCTION
... • Objective is to produce high-quality fish for high-end market seeking profits and lowering US seafood trade deficit ($ 8B) • New technology has been developed from egg to market: new species (moi, kahala, cobia) production has been added to market • Results suggest that growing this species in exp ...
... • Objective is to produce high-quality fish for high-end market seeking profits and lowering US seafood trade deficit ($ 8B) • New technology has been developed from egg to market: new species (moi, kahala, cobia) production has been added to market • Results suggest that growing this species in exp ...
Anthrax
... people become infected handling animals or animal products that contain spores. This can happen to livestock producers or butchers dealing with sick animals, or when infection has been spread by wool or hides. The spores enter the body through cuts or scratches in the skin and cause a local infectio ...
... people become infected handling animals or animal products that contain spores. This can happen to livestock producers or butchers dealing with sick animals, or when infection has been spread by wool or hides. The spores enter the body through cuts or scratches in the skin and cause a local infectio ...
Distribution and impacts of warm water invasive fish in Lake Tahoe
... In the last 125 years numerous invasive species have been introduced into Lake Tahoe. In recent years there has been an invasion of warm water fishes including largemouth bass [Micropterus salmoides (Lacepède, 1802)], and bluegill [Lepomis macrochirus (Rafinesque, 1820)]. These species threaten to d ...
... In the last 125 years numerous invasive species have been introduced into Lake Tahoe. In recent years there has been an invasion of warm water fishes including largemouth bass [Micropterus salmoides (Lacepède, 1802)], and bluegill [Lepomis macrochirus (Rafinesque, 1820)]. These species threaten to d ...
Weed Management in Small Ponds
... correct time to ensure effectiveness and prevent fish kills. In most cases, it is best to apply herbicides early in the growing season after the water temperature is at least 65ºF. At this time the plants are growing actively and will absorb the herbicide more readily. Fewer weeds are present and th ...
... correct time to ensure effectiveness and prevent fish kills. In most cases, it is best to apply herbicides early in the growing season after the water temperature is at least 65ºF. At this time the plants are growing actively and will absorb the herbicide more readily. Fewer weeds are present and th ...
Land Protection Partners
... summer water is allowed. We disagree with this position. Bullfrogs will continue to be a part of the middle Piru Creek system, even with the “natural” flow regime. For example, in 2005, the flow rates under the natural regime were 15 cfs through the summer months, so the only benefit of the “natural ...
... summer water is allowed. We disagree with this position. Bullfrogs will continue to be a part of the middle Piru Creek system, even with the “natural” flow regime. For example, in 2005, the flow rates under the natural regime were 15 cfs through the summer months, so the only benefit of the “natural ...
Section 3 overview of potential threats
... timing and rate of change to be temporally variable. Aquatic biota may also rely on particular aspects like flow for breeding, movement and survival, or have innate responses to components of natural water regimes such as flooding and disturbance238,239. Given the generally warm climate combined wit ...
... timing and rate of change to be temporally variable. Aquatic biota may also rely on particular aspects like flow for breeding, movement and survival, or have innate responses to components of natural water regimes such as flooding and disturbance238,239. Given the generally warm climate combined wit ...
Zajler: Nature vs
... (Campbell, 2006). In the nucleus of a cell, DNA molecules are found in a double helix structure because every DNA molecule binds with its complementary nucleotide located on the opposite side of the double helix (Hamilton, 2002). DNA molecules store and transmit genetic information that instructs ce ...
... (Campbell, 2006). In the nucleus of a cell, DNA molecules are found in a double helix structure because every DNA molecule binds with its complementary nucleotide located on the opposite side of the double helix (Hamilton, 2002). DNA molecules store and transmit genetic information that instructs ce ...
What is Cage Culture? - Alabama Cooperative Extension System
... Freshwater cage culture is not foolproof or simple. On the contrary, it is more intensive in many ways than pond culture and probably should be considered as an alternative commercial enterprise only where open-pond culture is not practical because of excessive depth, obstructions that prevent harve ...
... Freshwater cage culture is not foolproof or simple. On the contrary, it is more intensive in many ways than pond culture and probably should be considered as an alternative commercial enterprise only where open-pond culture is not practical because of excessive depth, obstructions that prevent harve ...
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.