Strawberry Reservoir Fishery Management Plan
... comparison to the estimated 64 million eaten by cutthroat predators the next year in the diet study, but does offer some help in chub control, and provided a viable commercial operation at the time. Currently these harvesters are not taking fish from Strawberry, largely because numbers of smaller ch ...
... comparison to the estimated 64 million eaten by cutthroat predators the next year in the diet study, but does offer some help in chub control, and provided a viable commercial operation at the time. Currently these harvesters are not taking fish from Strawberry, largely because numbers of smaller ch ...
End Overfishing of Menhaden
... The ASMFC is Changing the Way They Manage Menhaden In May 2010, the ASMFC’s Menhaden Management Board responded to the 2010 stock assessment recommendation that new, more conservative reference points (i.e., population targets and fishing limits) are needed by initiating the development of ecologi ...
... The ASMFC is Changing the Way They Manage Menhaden In May 2010, the ASMFC’s Menhaden Management Board responded to the 2010 stock assessment recommendation that new, more conservative reference points (i.e., population targets and fishing limits) are needed by initiating the development of ecologi ...
gordonetal2015eco
... two low-predation tributaries that initially contained no resident guppies (for more information on the introduction see Travis et al. 2014). Reverse introductions from low-predation into high-predation sites have been attempted but unfortunately are never successful. All three low-predation sites u ...
... two low-predation tributaries that initially contained no resident guppies (for more information on the introduction see Travis et al. 2014). Reverse introductions from low-predation into high-predation sites have been attempted but unfortunately are never successful. All three low-predation sites u ...
A review of the ecological implications of mariculture and
... water column (especially in regions with already high nutrient loadings and, or long flushing times) the greater the potential, of such wastes, to lead to the stimulation of phytoplankton blooms (Frid and Mercer, 1989.). In 1990, the Department of the Marine in Ireland commissioned a report on Irish ...
... water column (especially in regions with already high nutrient loadings and, or long flushing times) the greater the potential, of such wastes, to lead to the stimulation of phytoplankton blooms (Frid and Mercer, 1989.). In 1990, the Department of the Marine in Ireland commissioned a report on Irish ...
Parasites dominate food web links
... suggesting that new theoretical models may be needed to accommodate parasites, which eat species larger than themselves. Before taking this step, however, it is expedient to consider how, if at all, parasites affect food webs. Insect parasitoids are the only type of parasite commonly included in foo ...
... suggesting that new theoretical models may be needed to accommodate parasites, which eat species larger than themselves. Before taking this step, however, it is expedient to consider how, if at all, parasites affect food webs. Insect parasitoids are the only type of parasite commonly included in foo ...
Lambden and Johnson 2013 biomass
... 2004; Hechinger et al. 2012). Larval trematodes, which often comprise the largest parasite biomass contribution in aquatic ecosystems studied thus far, can directly contribute to energy flow by being consumed by a large variety of predators either as free-living life stages or along with infected ho ...
... 2004; Hechinger et al. 2012). Larval trematodes, which often comprise the largest parasite biomass contribution in aquatic ecosystems studied thus far, can directly contribute to energy flow by being consumed by a large variety of predators either as free-living life stages or along with infected ho ...
Considering Fish and Fish Habitat in Existing Hydroelectric
... computerised control systems and environmental technologies has helped to maintain the competitiveness of hydroelectric power. At the same time, new smaller-scale thermal generation technologies, including efficient gas turbines, have emerged as a cost-effective alternative in many regions. • Market ...
... computerised control systems and environmental technologies has helped to maintain the competitiveness of hydroelectric power. At the same time, new smaller-scale thermal generation technologies, including efficient gas turbines, have emerged as a cost-effective alternative in many regions. • Market ...
Ringworm in Hedgehogs - Garden Wildlife Health
... often subclinical (i.e. there was no visible skin disease). When affected by ringworm, hedgehogs may have spine or hair loss (spines in the diseased area may be loose or fall off), scabs or scurf in patches along the border of the skirt at the spine/hair margin, and cracked crusty skin (particularly ...
... often subclinical (i.e. there was no visible skin disease). When affected by ringworm, hedgehogs may have spine or hair loss (spines in the diseased area may be loose or fall off), scabs or scurf in patches along the border of the skirt at the spine/hair margin, and cracked crusty skin (particularly ...
Bridge under troubled water: Turbulence and niche partitioning in
... and are discontinuous swimmers, whereas cruise predators continu- ...
... and are discontinuous swimmers, whereas cruise predators continu- ...
Parasitism - Sinauer Associates
... In science fiction books and movies, villains sometimes use mind control or physical devices to break the will and control the actions of their victims. In these stories, a person may be forced to perform strange or grotesque actions, or to harm themselves or others—all against their will. Real life ...
... In science fiction books and movies, villains sometimes use mind control or physical devices to break the will and control the actions of their victims. In these stories, a person may be forced to perform strange or grotesque actions, or to harm themselves or others—all against their will. Real life ...
Johnson et al. 2010 eating parasites
... structure [6–8], the ecological significance of parasite ingestion has rarely been considered, particularly when consumption does not lead to transmission. Here, we Glossary Biological control: the intentional introduction of predators, parasites, or pathogens to reduce the population of a ‘pest’ sp ...
... structure [6–8], the ecological significance of parasite ingestion has rarely been considered, particularly when consumption does not lead to transmission. Here, we Glossary Biological control: the intentional introduction of predators, parasites, or pathogens to reduce the population of a ‘pest’ sp ...
Light-induced changes in the prey consumption and behavior of two
... Secondly, light will be further reduced by unfavorable sea surface conditions, turbidity and many other water quality variables which may vary with depth and affect spectral attenuation (McFarland 1986). Thus, the optical environment in which these fish live and forage ...
... Secondly, light will be further reduced by unfavorable sea surface conditions, turbidity and many other water quality variables which may vary with depth and affect spectral attenuation (McFarland 1986). Thus, the optical environment in which these fish live and forage ...
The Feeding Ecology of Flatfish in the Northwest Atlantic
... The taxonomic resolution of invertebrate prey is generally higher in samples collected prior to 1981, since those stomach contents were identified in the laboratory. For our analysis, fish and invertebrate prey were grouped to family or order to account for differences in taxonomic resolution betwee ...
... The taxonomic resolution of invertebrate prey is generally higher in samples collected prior to 1981, since those stomach contents were identified in the laboratory. For our analysis, fish and invertebrate prey were grouped to family or order to account for differences in taxonomic resolution betwee ...
Journal of Marine Science - CIEE Research Station Bonaire
... tractus. This condition has been found to be a parasite, although its exact taxonomic identity is still unknown. The study of this parasite has become the point of interest for many researchers because dark spots have now been observed on other herbivorous fish in this region. The current frequency ...
... tractus. This condition has been found to be a parasite, although its exact taxonomic identity is still unknown. The study of this parasite has become the point of interest for many researchers because dark spots have now been observed on other herbivorous fish in this region. The current frequency ...
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.