Dugesia Spp Research Paper

This experiment is to see The Affect of Caffeine on Daphnia. Daphnia is also known as a water flea. It is a distant relative of crabs and shrimps. (Marshall Cavendish, 2002) Daphnia have a hard external skeleton with jointed appendages and limbs. The head contains a large central eye which is made of two eyes joined together. Daphnia has two pairs of antennae which are used for swimming. Each daphnia has five pairs of limbs. These limbs lie in a certain space under the body bounded by the carapace. (Marshall Cavendish, 2002) A carapace is a hard upper shell or chitinous outer covering on the back of some animals. The daphnia is well preserved because of its shells which are composed of chitin. The usual size of this microorganism is about 0.2-0.3 mm; they look like flat disks. Their bodies are divided into three parts – head, thorax, and abdomen. The head is typically dome-shaped with five pairs of appendages. Among these five are two pairs of antennae; there is a small pair and a larger pair. The smaller pair of antennae serves as a sensory function and the larger one is used for swimming. The other three appendages’ purpose is to secure food they intake. (Michael Hutchins, 2003) The thorax holds four to six pairs of legs that are used for gathering food, filtering water, or grasping mates. There are over 400 species of daphnia and they are distributed worldwide. Daphnia uses their thoracic legs to produce a constant current of water; this allows them to filter food

The Earthworm is a crucial component of the environment due to their interactions with soil which then, in turn, provides benefits to other living organisms such as their burrowing behavior, which allows nutrients, air, and water to delve deeper into the soil. After soil is swallowed by the pharynx, the food matter is sent through the esophagus and into the crop, where the soil is stored until it interacts with the gizzard. The main function of the gizzard to grind the soils so that it can enter the intestine, where gland cells within release fluid to aid in the process. When organic matter is finally excreted from the intestine to the anus through the worm through the process of casting, more nutrients are introduce into the soil that benefit plant life. The earthworm also has a brain located behind its pharynx, called the cerebral ganglia, that is crucial for movement. The

Daphnia magna is primarily found in freshwater and brackish environments. (Elenbass 2013) Daphnia are commonly known as “water fleas” due to their small body form and hyperactivity. Daphnia move very rapidly in

Background: Daphnia is also known as diploid or water fleas belong to a group of animals named crustaceans. They are too small to be seen with the naked eye. There are two chromosomes are from the father and mother also, they are multicellular. They live in freshwater and in a few terrestrial habitats. (Textbook 595 & 680)

The diatom Didymosphenia Geminata, often referred to as, “Didymo,” or “Rock Snot,” is native to many parts of the world. Didymo lives in freshwater streams and rivers and thrives in nutrient rich waters such as those that are in southern Missouri and Arkansas. This alga, not to be confused with algae, is a moss-like substance that until lately hadn’t been a cause for concern for anyone. Recently though, thanks mostly to anglers, Didymosphenia Geminata has begun to spread into rivers and streams that are, or at least were, not originally native habitats for this diatom. Scientists and ecologists are only now beginning to understand how damaging this substance really can be. While, “Didymo” has yet to be found in Missouri’s

Dugesia tigrina are flatworms of the Turbellaria class that can live in saltwater or freshwater environments (Reddien and Alvarado 2004). These flatworms are also known as planaria and are notorious for their great ability of regeneration. The purpose of this experiment was to test if the regrowth of the planarian limbs was affected by light.

Daphnia are small multicellular organisms, also known as the water flea (even though they are not technically a flea); they are characterized by a modified antennae used for movement, legs used for collecting food by creating a current bringing in food material to their digestive tract, they also collect food using their legs for filter feeding. (Russell, 2013) Daphnia are crustaceans, ranging around 3 mm in size, which commonly inhabit aquatic environments including lakes, ponds, and streams. (Russell, 2013) Daphnia can almost be found in any still standing water body.

Materials: Scale, potato slice, big tub, small cup, petri dish, big tub lid, mealworms, tape, BTB, and a pencil.

Spruce budworm (Choristoneura fumiferana (Clemens)) outbreaks have an important effect on succession of balsam fir (Abies balsamea (L.) Mill.) and spruce (Picea spp.) stands in eastern Canadian forests (MacLean 2004). Spruce budworm feeds repeatedly on annual shoots of balsam fir and spruce and leads to large-scale growth reduction and mortality (MacLean and Ostaff 1989). When overstory tree mortality occurs from defoliation, it creates gaps that allow understory plants to get an opportunity to release (Osawa 1994; Kemball et al. 2005). Defoliation also changes the competitive interactions between host fir-spruce and non-host species and may release the latter.

Daphnia are small, planktonic crustaceans, between 0.2 and 5 mm in length. Daphnia are members of the order Cladocera, and are one of the several small aquatic crustaceans commonly called water fleas because of their saltatory swimming style (although fleas are insects and thus only very distantly related). They live in various aquatic environments ranging from acidic swamps to freshwater lakes, ponds, streams and rivers.In the water flea Daphnia, the single, small heart is easily visible when viewed under transmitted light under a low power

On this image, we see the external dorsal side of a preserved crayfish. As part of the largest animal phylum the Arthropoda, the body of the crayfish is segmented, with jointed appendages and exoskeleton. The paired antennae (1) are long appendages located the front of the mouth and modified for help the animal to sense touch and taste. The antennules (2) are shorter, also paired with the same function but they also help to maintain balance. The chelipeds (3) are located on the front of the thorax, and they are responsible for defence and grasping food. On the at ventral part of the thorax, we found four pairs of walking legs (4), with these legs the crayfish changes locations on the bottom of freshwater lakes, streams and also on land. They

The Pompeii worm is related to the Polychaete which are marine worms. This worm can handle temperatures up to 80℃ and can length up to 13cm. Their back is coated in a bacterial mat that reacts as an insulation system. Not only is their back coated with bacteria, but their whole body is covered in bristles in order for them to survive and move. The city Pompeii, was destroyed by the eruption of one of the most famous volcanos, they named the worm after the city because it's the most heat-tolerant organism. The next organism I observed was the Symphurus thermophilus that is known across several dispersed locations. This organism looks like rock or a nonliving object, however, it is actually a flatfish. Both eyes are found on the left side on the head of adults, their eyes are large and round. They also have 4-5 rows of teeth which are very sharp on the blind side while the eyed side has 1 row of teeth on the bottom and 2-3 rows on

The adult darkling beetle lives from one to three months (Mealwormcare.org, 2016). The mealworm has a hard body that is designed to burrow, eat, and store fat (Ipm.iastate.edu, 2016). There are three significant body sections which are the thorax, head, and abdomen (Animals.mom.me, 2016). The head of the mealworm has a mouth antennae and eyes. The eyes are under developed due to its burrowing habits (Wikipedia, 2016). The thorax contains three sections that has two short legs with claws on the end. The mealworm has poor walking abilities but is equipped with claws that allow swift burrowing, (Enchantedlearning.com, 2016).The abdomen has nine segments held together by a spine. The abdomen holds a majority of fat that is stored for the mealworms transformation to an adult (Wikipedia, 2016). The mealworms

Although many researchers have found that Gammarus setosus lives in panarctic region, few of them work to specify whether it predominantly lives in rocky zones or sandy zones. To determine this, we set out for a choice experiment on G. setosus that can help us determine its distribution more precisely.

Rhodiola rosea as one of the nootropic ingredients of Mind Lab Pro, performs a variety of roles in brain development. It is believed to stimulate and withstand cognition-critical neurotransmitters including norepinephrine, dopamine, and serotonin. Known as an ”adaptogen” herb, it helps strengthen mental and physical stress resistance while supporting brain energy, promoting clear, calm thinking under difficult conditions.