Toxoplasmosis seroprevalence in wild small rodents, potentially
... are no studies on T. gondii prevalence in wild or synanthropic rodent species in Mexico. Here, we report the frequency of anti-T. gondii antibodies in wild rodents from Tamaulipas, in eastern Mexico. Since rodents are among the most species-rich groups, it is impractical to have specific conjugates ...
... are no studies on T. gondii prevalence in wild or synanthropic rodent species in Mexico. Here, we report the frequency of anti-T. gondii antibodies in wild rodents from Tamaulipas, in eastern Mexico. Since rodents are among the most species-rich groups, it is impractical to have specific conjugates ...
2013 VHS Virus in farmed S to wild
... In British Columbia, Canada (BC), aquaculture of finfish in ocean netpens has the potential for pathogen transmission between wild and farmed species due to the sharing of an aquatic environment. Viral hemorrhagic septicemia virus (VHSV) is enzootic in BC and causes serious disease in wild Pacific herr ...
... In British Columbia, Canada (BC), aquaculture of finfish in ocean netpens has the potential for pathogen transmission between wild and farmed species due to the sharing of an aquatic environment. Viral hemorrhagic septicemia virus (VHSV) is enzootic in BC and causes serious disease in wild Pacific herr ...
Cooperation and conflict in host manipulation
... two important aspects of the study of host manipulation. First, as observed in snails infected with Leucochloridium, infection with manipulative parasites most often affects more than one dimension in host phenotypes, even though earlier studies have generally considered the influence of infection on ...
... two important aspects of the study of host manipulation. First, as observed in snails infected with Leucochloridium, infection with manipulative parasites most often affects more than one dimension in host phenotypes, even though earlier studies have generally considered the influence of infection on ...
The biology and ecology of the ocean sunfish Mola mola: a review of
... combination of squid and fish (pilchard, mackerel). Alternatively, it is possible that M. mola is attracted to the highly visible light sticks used in conjunction with the bait (Petersen 2005) which may mimic the appearance of bioluminescent gelatinous zooplankton, or they may simply be foul-hooked ...
... combination of squid and fish (pilchard, mackerel). Alternatively, it is possible that M. mola is attracted to the highly visible light sticks used in conjunction with the bait (Petersen 2005) which may mimic the appearance of bioluminescent gelatinous zooplankton, or they may simply be foul-hooked ...
Diel cycle in the percentage abundance of
... examination of embryo development. For each species, a total of 300 individuals was examined for each 24 h period. Each female was dissected carefully with fine needles under a stereomicroscope and the embryos in the brood pouch were removed and examined. Following the approach of other investigator ...
... examination of embryo development. For each species, a total of 300 individuals was examined for each 24 h period. Each female was dissected carefully with fine needles under a stereomicroscope and the embryos in the brood pouch were removed and examined. Following the approach of other investigator ...
The European wildcats (Felis silvestris silvestris)
... of these parasites. Carcasses of 21 wildcats were collected in natural parks of southern Italy (i.e., Catania, Sicily n = 5 and Matera, Basilicata n = 16) and biometrically and genetically identified as Felis silvestris silvestris, but two as hybrids. Troglostrongylus brevior and Eucoleus aerophilus ...
... of these parasites. Carcasses of 21 wildcats were collected in natural parks of southern Italy (i.e., Catania, Sicily n = 5 and Matera, Basilicata n = 16) and biometrically and genetically identified as Felis silvestris silvestris, but two as hybrids. Troglostrongylus brevior and Eucoleus aerophilus ...
Grass Carp, the White Amur: Ctenopharyngodon idella Cuvier and
... in a variety of conditions, the natural grass carp life cycle has not been observed to occur many times outside of the native range. The restriction is related to reproduction, as the fish cannot reproduce in confined water bodies. The status of introduced grass carp populations is often difficult t ...
... in a variety of conditions, the natural grass carp life cycle has not been observed to occur many times outside of the native range. The restriction is related to reproduction, as the fish cannot reproduce in confined water bodies. The status of introduced grass carp populations is often difficult t ...
Partial migration in fishes
... where populations of birds can be relatively well defined. For many fishes, especially oceanic species, however, populations can range across vast areas of habitat, and so partial migration at a scale relevant to the particular species in question must be considered. Additionally, often fishes will ...
... where populations of birds can be relatively well defined. For many fishes, especially oceanic species, however, populations can range across vast areas of habitat, and so partial migration at a scale relevant to the particular species in question must be considered. Additionally, often fishes will ...
Clownfish: Why Tank-Raised is Better than Wild
... are also being farm raised, but their availability tends to be more sporadic. Accustomed to people Wild harvested clownfish, when first received, may be shy and afraid of people. Tank raised clownfish are usually just the opposite. Since birth, these fish have associated humans with food and often b ...
... are also being farm raised, but their availability tends to be more sporadic. Accustomed to people Wild harvested clownfish, when first received, may be shy and afraid of people. Tank raised clownfish are usually just the opposite. Since birth, these fish have associated humans with food and often b ...
Transactions of the American Fisheries Society Changes in
... harvest from 1985 to 2008 (all species individually), (2) fishing effort directed at all salmonine species as a group from 1985 to 2008 (all species), (3) age composition of total harvest from 1985 to 2008 (all species except Coho Salmon), (4) age composition of harvest of mature fish from 1985 to 2 ...
... harvest from 1985 to 2008 (all species individually), (2) fishing effort directed at all salmonine species as a group from 1985 to 2008 (all species), (3) age composition of total harvest from 1985 to 2008 (all species except Coho Salmon), (4) age composition of harvest of mature fish from 1985 to 2 ...
CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. R5-2004-0148
... the Code of Federal Regulations (40 CFR 122.24) as a fish hatchery, fish farm, or other facility which contains, grows, or holds cold-water fish species or other cold water aquatic animals including, but not limited to, the Salmonidae family of fish (e.g. trout and salmon) in ponds, raceways, or oth ...
... the Code of Federal Regulations (40 CFR 122.24) as a fish hatchery, fish farm, or other facility which contains, grows, or holds cold-water fish species or other cold water aquatic animals including, but not limited to, the Salmonidae family of fish (e.g. trout and salmon) in ponds, raceways, or oth ...
Effects of Food Type, Habitat, and Fish Predation on the Relative
... then ejected without being ingested) at the lake bottom. Their high filtering capacity has led to increased water clarity (Leach 1992, Budd et al. 2001) and increased light penetration has led to an increase in near-shore macrophytes abundance (Stuckey and Moore 1995, Skubinna et al. 1995) and perip ...
... then ejected without being ingested) at the lake bottom. Their high filtering capacity has led to increased water clarity (Leach 1992, Budd et al. 2001) and increased light penetration has led to an increase in near-shore macrophytes abundance (Stuckey and Moore 1995, Skubinna et al. 1995) and perip ...
C S O
... the abundance and survival of the ESA-listed species but are not part of this action. NMFS does not expect that the proposed action would measurably impact listed salmonid populations outside of the action area because the artificially propagated salmon associated with the proposed program would be ...
... the abundance and survival of the ESA-listed species but are not part of this action. NMFS does not expect that the proposed action would measurably impact listed salmonid populations outside of the action area because the artificially propagated salmon associated with the proposed program would be ...
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.