Largemouth Bass (Micropterus salmoides) - Texas 4-H
... "true" bass to distinguish it from species such as largemouth, smallmouth, and spotted bass which are actually members of the sunfish family Centrarchidae. Although Morone is of unknown derivation, saxatilis is Latin meaning "dwelling among rocks." As with other true basses, the dorsal fin is clearl ...
... "true" bass to distinguish it from species such as largemouth, smallmouth, and spotted bass which are actually members of the sunfish family Centrarchidae. Although Morone is of unknown derivation, saxatilis is Latin meaning "dwelling among rocks." As with other true basses, the dorsal fin is clearl ...
Flood pulse effects on multispeciesfishery yields in the
... models possessing ! values less than two were considered to have substantial support from the data. When there was more than one ‘best’ approximating model, model parameter estimates were obtained from model averaging based on all best approximating models. Model-averaged parameter estimates with co ...
... models possessing ! values less than two were considered to have substantial support from the data. When there was more than one ‘best’ approximating model, model parameter estimates were obtained from model averaging based on all best approximating models. Model-averaged parameter estimates with co ...
Lecture_30_Mar 26_Co-evolution_and _PIHM
... Testing effects on host and parasite fitness A common assumption is that host behavior changes are driven by and for parasites, to increase parasite survivorship and transmission. However, their fitness consequences for the parasite or the host can be either positive, neutral, or negative: these be ...
... Testing effects on host and parasite fitness A common assumption is that host behavior changes are driven by and for parasites, to increase parasite survivorship and transmission. However, their fitness consequences for the parasite or the host can be either positive, neutral, or negative: these be ...
Facilitative interactions among aquatic invaders
... were tabulated. In cases where one invader had various positive and negative effects on another’s abundance and survival, the net effect was estimated when information allowed at least a subjective ranking of the various effects; otherwise, the interaction was omitted. For less than 5% of the cases, ...
... were tabulated. In cases where one invader had various positive and negative effects on another’s abundance and survival, the net effect was estimated when information allowed at least a subjective ranking of the various effects; otherwise, the interaction was omitted. For less than 5% of the cases, ...
Beautiful Friendship
... discovered the 29th species, Amphiprion barberi. That brought his lifetime total to seven clownfish (and nearly 500 species of reef fish). "I still get a huge buzz when I find something new," Allen says. "Amphiprion barberi is a beautiful clown, orange and red like a blazing ember on the reef." Amo ...
... discovered the 29th species, Amphiprion barberi. That brought his lifetime total to seven clownfish (and nearly 500 species of reef fish). "I still get a huge buzz when I find something new," Allen says. "Amphiprion barberi is a beautiful clown, orange and red like a blazing ember on the reef." Amo ...
Bream are in all our fisheries, but the most prolific of these for larger
... Bream become sexually mature aged between 3-4 years and will spawn when water temperatures reach 12-20°C in May to June, with some females spawning alternate years. River populations will migrate to their spawning grounds and this journey can take some months in large rivers, starting in the autumn, ...
... Bream become sexually mature aged between 3-4 years and will spawn when water temperatures reach 12-20°C in May to June, with some females spawning alternate years. River populations will migrate to their spawning grounds and this journey can take some months in large rivers, starting in the autumn, ...
Reconciling Ecosystems: Reversing Declines in Native Species
... uses (Chapter 1). This societal change has created ongoing tension between the economy and the environment, where allocations of environmental water or investments in habitat for organisms are viewed as “costs” associated principally with regulatory compliance, without recognizing corresponding bene ...
... uses (Chapter 1). This societal change has created ongoing tension between the economy and the environment, where allocations of environmental water or investments in habitat for organisms are viewed as “costs” associated principally with regulatory compliance, without recognizing corresponding bene ...
Mercury concentrations in prey fish indicate enhanced
... to their vertical distribution. Fish species were selected to cover a wide range of vertical distributions, from epipelagic (<200 m) to mesopelagic (>300 m) environments in the sub-tropical mid-North Atlantic. Mean mercury concentrations in the study species ranged from 57 to 377 ppb dry wt and were ...
... to their vertical distribution. Fish species were selected to cover a wide range of vertical distributions, from epipelagic (<200 m) to mesopelagic (>300 m) environments in the sub-tropical mid-North Atlantic. Mean mercury concentrations in the study species ranged from 57 to 377 ppb dry wt and were ...
- Wiley Online Library
... short lifespan that is the result of their specific life-history adaptations and is retained under laboratory conditions. Nothobranchius furzeri, the most popular laboratory species, is the vertebrate species with the shortest lifespan recorded in captivity. In the laboratory, adults of different No ...
... short lifespan that is the result of their specific life-history adaptations and is retained under laboratory conditions. Nothobranchius furzeri, the most popular laboratory species, is the vertebrate species with the shortest lifespan recorded in captivity. In the laboratory, adults of different No ...
Caranx hippos (Common Jack)
... detect and respond to elevated dimethylsulfoniopropionate (DMSP), a chemical which is a byproduct made by marine algae and released during foraging by zooplankton. Juvenile C. hippos depend on this because it’s used as a signal for predation, showing areas with high concentrations of plankton. Adult ...
... detect and respond to elevated dimethylsulfoniopropionate (DMSP), a chemical which is a byproduct made by marine algae and released during foraging by zooplankton. Juvenile C. hippos depend on this because it’s used as a signal for predation, showing areas with high concentrations of plankton. Adult ...
Comparing Mercury, Arsenic, and Selenium in Several Fish Species
... Hg0 is ingested, the majority of it is excreted in the feces (Ozuah, 2000; National Research Council, 2000). If Hg is ingested as MeHg, such as when contaminated fish tissue is consumed, 95% of it is absorbed, which is then distributed to all tissues throughout the body within 36 hours (Ozuah, 2000; ...
... Hg0 is ingested, the majority of it is excreted in the feces (Ozuah, 2000; National Research Council, 2000). If Hg is ingested as MeHg, such as when contaminated fish tissue is consumed, 95% of it is absorbed, which is then distributed to all tissues throughout the body within 36 hours (Ozuah, 2000; ...
Catfish in the South Delta - Hydroacoustic Technology, Inc.
... we assume that the catfish continued south with the prey (Figure 7). Then after the spike, the catfish returned to the Clifton Court Forebay, and was detected at ORS1 and the radial ...
... we assume that the catfish continued south with the prey (Figure 7). Then after the spike, the catfish returned to the Clifton Court Forebay, and was detected at ORS1 and the radial ...
Volume 192 - 1991 - Part 14 of 41
... eye salmon from one nation appears to affect the biomass yield of sockeye from another, coordinated international efforts would be prudent to avoid increas ing the biomass of one population via mariculture at the expense of another. In non-salmonid species as well, such trade-offs among stocks can ...
... eye salmon from one nation appears to affect the biomass yield of sockeye from another, coordinated international efforts would be prudent to avoid increas ing the biomass of one population via mariculture at the expense of another. In non-salmonid species as well, such trade-offs among stocks can ...
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.