Tuesday, November 23, 2010

Pumpkinseed Research

SAE: 1.5 hours

            A commonly caught freshwater fish is the pumpkinseed sunfish. I researched this speices and used many websites like http://seagrant.wisc.edu/greatlakesfish/fpumpkinseed.html, http://pond.dnr.cornell.edu/nyfish/Centrarchidae/pumpkinseed.html, and http://www.dnr.state.oh.us/Home/species_a_to_z/SpeciesGuideIndex/pumpkinseedsunfish/tabid/6727/Default.aspx. The scientific name for the pumpkinseed sunfish is Lepomis gibbosus. They are freshwater fish that are native to mostly north America. They can be found from as high North as the finger lakes in New York to certain lakes in South Carolina. In Europe, these pumpkinseed sunfish are uninvited guests and are on the invasive species list there. These freshwater swimmers are usually between six inches and eight inches, but the largest and maximum size usually caps off at a whopping sixteen inches! In the water, these fish appear as an oval silhouette. These fish are called pumpkinseed because their bodies are compressed laterally and this gives it the appearance and body shape of the seed of a pumpkin.
            This species of sunfish usually consists of many, numerous colors with varying hues and shades. They typically include brown, yellow, black, orange, and sometimes blue or green speckles. Certain places on the pumpkinseed sunfish are commonly colored. For example, they always have a yellow or orange shade on their stomachs and breasts. They defend themselves well with sharp, pin-like pointed dorsal and also anal fins.
            Often located in shallow waters, these fish also appreciate some weeds and plants for hiding, or escaping from the direct sunlight. Ponds and small lakes are commonly filled with these pumpkinseed sunfish. They also are most comfortable at a temperature of between thirty nine degrees Fahrenheit and seventy two degrees Fahrenheit. At night these freshwater fish rest close to the ground, but during the warmer daylight hours they tend to be very active and swim around their enclosures in search of food.
            Their rapid reproduction rate helps these sunfish a lot because they are quite low on the freshwater fish food chain. Most pumpkinseed sunfish will make a meal out of numerous species and varieties of insects, especially mosquito larvae when it is in season. They also consume mollusks and crustaceans when they can get to them, a readily available source of food also comes from the worms and bait of fishermen. Unfortunately, these fish are also cannibals. They will eat their own kind as well as other small fish that are in the area to sustain themselves. These fish are mostly killed and eaten by birds and mammals, which include humans!
            Sunfish, including the pumpkinseed become sexual mature at about the age of two. Colonies of nests that are found on gravel bottoms during late spring and early summer are built by the males. They are very territorial and any females that arrive early will be hastily chased away. When the male decides the time is right, he will meet with a female at his nest. The fish eggs are dropped into a cloud of milt and they stick, settle, and rest on pebbles, gravel, or pieces on the ground below. Once the eggs are settled in the nest, the female leaves everything else is left to the male. Over a certain period of time the males will continue to mate with several other females. In just a few days, the eggs will hatch, but until then the male will guard his nest of eggs with his life. To guard their offspring after hatching, the males try to herd their young in a ball-like cloud. Maintaining the ball-like cloud becomes impossible after a week or two and the offspring part. They have a sufficient amount of energy to move on by themselves, though only a portion of them will make it to adulthood.
            On occasion, cross breeding occurs naturally. Pumpkinseed sunnys and bluegills are closely related and look similar too. To fishermen, these fish are great for beginners and experts alike. Though, they are not as commendable as catching a bluegill. The pumpkinseed sunfish is also called a panfish because if you wanted to cook it, the fish could easily fit into a single, normal-sized pan.


Pumpkinseed Sunfish

Thursday, November 11, 2010

Bluegill Research

SAE: 1 hour

It is COLD outside! I decided to do some work from here, in the warmth of my house. Today I discovered this awesome website, http://www.tpwd.state.tx.us/huntwild/wild/species/bgl/, it has a profile of the bluegill sunfish, I found some really cool facts. The scientific name for a bluegill is Lepomis macrochirus, they look like this...



Bluegills start to spawn in spring, when the water temperature reaches about 70 degrees and they do not stop until temperatures cool off again in the fall, but their main spawning season is usually between May and June. Their long spawning period usually causes bluegills to overpopulated and they can take over an area. Luckily for fisherman though, the more fish, the larger the chance is to catch one.

In the Eastern United States, bluegills are native, but they have also spread intentionally and unintentionally throughout America as well as parts of Canada and Mexico. Sunfish, including bluegills, make up a large portion of the freshwater fishing community and they are vital in the ecosystem's food web. A 4lb 12oz. fish was brought to shore from Ketona Lake, Alabama in 1950, that is the largest bluegill ever recorded!

Tuesday, November 2, 2010

Turkey Swamp Park

I was at the park a couple days ago, and I didn't get the chance to go fishing, but the trees are all changing color and I captured an incredible reflection that I just really wanted to post.