GH Transgenesis

Lake Malawi’s cichlid male population of fish are tested on their ability to build bowers to attract the female population. Altering this extended phenotype, or ability to build bowers resulted in no change of mating, but males that built successful bowers showed to

Temperature had a direct effect on oxygen consumption of crayfish, Orconectes propinquus. Crayfish acclimated to warm temperature (20 to 25 C) had a mean mass of 8.25g +/- 1.05. Crayfish acclimated to cold temperature (3 to 5 C) had a mean mass of 10.61g +/- 0.77. Oxygen consumption rates of 30-60 minute treatments were used and there was no significant difference between the two different treatments (t=0.48, df=58, P=0.70). The data from 0-30 minutes were not used because the crayfish were disrupted by transportation and the data were not normally distributed. The Q10 value was 1.05, representing that there was full compensation for oxygen consumption for the crayfish at two different acclimated temperatures. The oxygen consumption of crayfish was not affected significantly by two different temperatures (Figure 1).

Ruth Francis-Floyd, professor, Department of Large Animal Clinical Sciences (College of Veterinary Medicine) and Department of Fisheries and Aquatic Sciences, UF/IFAS Extension, Gainesville, FL 32611.

These two features earlier are examples that we can see with our naked eyes, but the DNA make up that we cannot see with our eyes alone are also laid out the same as well. In the evolutionary pathway, the genes that turn on and off for humans and fish are related through the instructions on how they function. All living things with limbs have in common the Sonic hedgehog gene (Shubin, p. 53). The Sonic hedgehog gene can control the development of the limbs in these creatures. To determine if the development of vertebrate animals can be interpreted in the same way, or have the same effect, the injection of vitamin A was used to inject into a shark, mice, and chicken embryos to see if the results were the same. The results turned out that the injection of vitamin A has indeed changed the development of limbs in these embryos. The effects cause the shark to have a mirror image of its fin, and the mice and chicken have duplication of bones in the limbs (Shubin, p.56-57). It becomes clear of what will happen if

In the Miranda and Hubbard (1994a) paper, the authors discuss the effects of length and lipid composition on winter survival of age-0 largemouth bass. The area of study for this research was Bay Springs Reservoir in Mississippi. Miranda and Hubbard wanted to determine if the larger young had greater survival through their first winter and if survival was influenced by levels of stored energy reserves (Miranda and Hubbard 1994a). Largemouth bass were collected from a 76-hectare arm of Bay Springs Reservoir monthly from June of 1990 through March of 1991. To collect the fish, doses of 1-2 mg/L of 5% emulsified rotenone were applied to netted zones within littoral areas (Miranda and Hubbard 1994a). Ten 0.015-hectare shoreline samples were

Before attempting this lab, we conducted some research on what conditions catfish need to survive in an area. Catfish are better off at temperatures ranging from 88-90 degrees Fahrenheit. Their preferred dissolved oxygen levels are at least 4 ppm.(http://www.thefishsite.com/articles/1907/water-quality-monitoring-and-management-for-catfish-ponds/). The diet of catfish often changes as they age. Younger catfish primarily feed on aquatic insects such as dragonfly larvae, water beetles and fly larvae. By the time they're adults, catfish consume small fish, seeds, aquatic plants, algae, crawfish and snails.(http://animals.mom.me/catfish-eating-habits-9466.html). The alkalinity of the water needs to be at least 40 ppm but the catfish will be happier

The channel catfish, scientifically named Ictalurus punctatus, is the most common species of aquatic freshwater catfish in North America (Fisher, 2003). This popular Nearctic species was also introduced in other parts of the world including the Palearctic areas in Spain, Romania, and Malaysia (Schoonover, 2004). Ictalurus punctatus is a native fish to the state of Alabama and can be located in various ponds, lakes, streams, and rivers around the Phenix City area. They are normally

- fish grew into a “jhasa”, which grows the largest ( large fish of indefinite species)

Ten juveniles were caged in different locations across three years and their length and weight recorded every week. The premise of this approach was that the muscle 13C would provide information about the source of carbon fueling the juvenile Chinook salmon muscle growth if they remained in each site long enough to reflect local food sources rather than hatchery fish feed products. As Chinook salmon are anadromous fish, the carbon isotope ratios of juvenile muscle tissues are influenced by maternal sources enriched in marine-based isotopes ratios relative to most freshwater energy sources (Doucett et al. 1999). Differences in salmonid allochthony among locations and years may have resulted from differences in age of the fish used in the experiment. These differences in

There is a growing problem regarding the blue and flathead catfish in the Maryland rivers and bays. “These catfish are native

The uncertainty of how genetically engineered fish will affect human health and impact the health of our oceans and wild salmon populations is disturbing.

1.2.1 Run Degenerative PCR and clone out some or all of the sequence. Blood will be extracted from the caudal tail fin tissue of two different betta splendens, which will provide purified DNA, after using the DNeasy Blood and Tissue Kit (Qiagen)

Pairs of alternative traits were expressed in the F2 generation on the ratio of ¾ dominant to ¼ recessive (3:1 segregation ratio referred to as Mendelian ratio)

The parade of genetically engineered marvels, during the past recent years, has been shocking: “Flavr-Savr” tomatoes that stay fresher longer; “giant salmon” that grow 37 times faster than the normal fish; “transgenic” pigs that are injected with human genes which causes them to produce milk with human protein that prevents blood clotting; and “supermice” injected with rat growth genes which makes them grow twice their normal size, are just a few.

groups of fish (initial body weight 2.30 g ± 0.01) were fed seven isonitrogenous and