This website uses cookies to ensure you have the best experience. Learn more

The Regeneration Of Dugesia Dorotocephala Essay

1182 words - 5 pages

Regeneration is a process in which tissue molds itself into an exact replica of an injured or severed part. The process of regeneration depends on different factors such as the environment and the development of the organism in question (Br, 1955). Regeneration occurs in several steps and the organism must have the ability to perform each one for successful regeneration with minimal loss of necessary function. First, after a wound is made muscular contraction closes up the wound (Pellettieri et al., 2010). Next a blastema, a group of undifferentiated cells, forms and will differentiate into the missing parts. Lastly the undifferentiated cells go through epimorphosis where the lost parts are formed by the blastema (Reddien & Sánchez Alvarado, 2004).
One organism well suited for regeneration is Dugesia dorotocephala, more commonly known as black planaria. Planarians are flatworms classified under the phylum Platyhelminthes and are bilaterally symmetrical. They are usually found in freshwater streams and ponds (Br, 1955). Planarians are unique in which they can reproduce both asexually and sexually. Planarians can reproduce asexually through transverse fission. Planarians are also hermaphrodites in which they can reproduce through cross fertilization. Planarians prefer to reproduce through fission where the organism splits in two and regenerates itself (Curtis & Schulze, 1933).
Past experiments using Dugesia dorotocephala, show the ability of planaria to regenerate after severing the organism into different parts (Sánchez Alvarado, 2006). Planaria with transversal cuts below the head and above the tail will produce regenerated segments due to the planaria’s ability to form Neoblasts and undergo epimorphosis to create new body segments from existing tissue and stem cells.
Material and Methods
Eight black planarians from the species Dugesia dorotocephala were severed using a transversal cut. The eight planarians were split into two groups as two different cuts were performed. The first cut right below the head, yielded eight replicates and produced short heads and long bodied segments. The second cut right above the tail, yielded eight replicates as well and produced long heads and short bodied segments.
The pieces were placed into petri dishes containing spring water and properly labeled with the type of segment produced by the cut. The dishes were placed in a dark cabinet at room temperature and left undisturbed. After one week, the planarians were observed for partial or full regeneration or death of the organism. Data was collected and recorded. The water was replaced with new spring water and the planarians were returned to the cabinet. After the second week, the observations were repeated and the data was recorded.
After one week, the planarians were observed for partial regeneration, full regeneration, or death. Planarian segments of long heads fully regenerated within the first week. One long tail segment died and all the...

Find Another Essay On The Regeneration of Dugesia dorotocephala

Verifying a Potential Role of GH in the Maintenance and Regeneration of Skeletal Muscle Precursors

547 words - 2 pages serum starvation or treated with hydrogen peroxide (H2O2) like a source of ROS. We analyzed whether GH addition in culture medium can modulate cell growth, cell viability, and the activation and/or expression of molecular markers of the apoptotic process, focusing mainly on the intrinsic pathway normally triggered by free radicals (33, 34). The purpose of our study is to verify a potential role of GH in the maintenance and regeneration of skeletal muscle precursors, identifying new cellular targets for future drug therapy.

The Horrors of War in Regeneration and All quiet on the Western Front

1739 words - 7 pages families, and the effects the war had on them. The effects of war are prominent throughtout the Novels “Regeneration” and “All quiet on the Western Front” and is also explored deeply in Wilfred Owen’s “Selected War Poetry”. Throughout these works we discover that war was inescapable for these men

Free Living Flatworm Regeneration and the Practical Applications of Studying Their Regenerative Capabilities

1852 words - 7 pages The ability to replace an injured portion of an organism's body is known as regeneration. Regeneration of free living flatworms is most common pronounce among "more basal taxa (Aceola, Catenulida, and Macrostomorpha) as well as in more derived taxa (Tricladida and Neodermata)" (Egger et al., 2007). The major free living flatworm taxa, with the exception of Nermodermatida, show some capacity to self regeneration damaged or missing tissues. The

Comparing Irony of War in Dulce et Decorum, Regeneration, and Quiet on the Western Front

1185 words - 5 pages Irony of War Exposed in Dulce et Decorum, Regeneration, and Quiet on the Western Front   Many of the young officers who fought in the Great War enlisted in the army with glowing enthusiasm, believing that war was played in fancy uniforms with shiny swords. They considered war as a noble task, an exuberant journey filled with honor and glory. Yet, after a short period on the front, they discovered that they had been disillusioned by the war

“To what extent does language develop the theme of gender roles in Pat Barkers “Regeneration”?”

1308 words - 6 pages Pat Barker uses language effectively in the novel “Regeneration” to present gender roles and other themes within the novel. Her presentation of women, emasculation and men taking on more feminine roles are important for the theme of gender roles within the novel. She also uses language effectively to present themes of duty and father figures. There is a very small but important female presence in “Regeneration”. The first mention of women in

A Comparison of the Techniques Employed in Portraying the Horror of War in Regeneration and Journey's End

2585 words - 10 pages A Comparison of the Techniques Employed in Portraying the Horror of War in Regeneration and Journey's End "I chose the First World War because it's come to stand in for other wars… It's come to stand for the pain of all wars." Pat Barker wrote "Regeneration" in the 1990's and R.C. Sherriff "Journey's End" in 1927, the quote is from Barker and illustrates the magnitude of the effect of the First World War, and

Comparing the Ways Michael Herr in Dispatches and Pat Barker in Regeneration Show the Effects of War

4183 words - 17 pages Comparing the Ways Michael Herr in Dispatches and Pat Barker in Regeneration Show the Effects of War When comparing Michael Herr's 'Dispatches' and 'Regeneration' by Pat Barker the differences in format, style and setting are clear from the outset. However both books explore the horrifying effect of war on those directly and indirectly involved. The two authors attempt to take the reader away from objective, statistical

Compare and contrast the ways "Regeneration" by Pat Barker and "The Rights of Desire" by Andre Brink deal with the theme of Love

1173 words - 5 pages Love is the least understandable human feeling. Love appears in all kinds of forms during most novels studied in class. However love is very difficult to categorize, some correlations can be made between 'types' of love and between the characters of different novels. In "The Rights of Desire" and "Regeneration", this is the case. Admiration, sexual attraction, respect and love in the family are seen and dealt with in different ways. In "The

'A Study on the Social Causes of Insanity' How Appropriate Do You Find this Statement as a Comment on Streetcar Named Desire and Regeneration?

2067 words - 9 pages ‘A Streetcar Named Desire’ and ‘Regeneration’ both present studies of insanity that stem from social pressures on characters. Insanity is defined as a “state of being unsound in mind” and “applicable to any degree of mental derangement from slight delirium or wandering to distraction”. Throughout the texts, we do see characters with ‘unsound minds’, ‘mental derangement’ who appear utterly distracted or delirious. The massive social cause of

This is an experiment on how planaria regenerate body parts and an explaination as to how the experiment was performed

1473 words - 6 pages developed further and grown darker in color. The larger worm's posterior end seemed to have evened out with the rest of its body. All three worms were practically identical to each other. Full regeneration and reproduction seemed to have occurred within the three-week period.ResourcesChristman, Jenifer. Robert W. Mead. 1998. Proportion regulation in the planarian, Dugesia tigrina following regeneration of structures. Hydrobiologia Volume: 383

In this research, we have established

1183 words - 5 pages Discussion Shoot regeneration using TDZ and BAP Recently, many research groups have been involved in establishing reliable regeneration procedures for agronomically and industrially important plants, because it would be a primary step to facilitate introduction of genes and improvement of the crops. In vitro regeneration system is the first step towards transformation and once successfully attempted, can pave the way for the development of

Similar Essays

Light Exposure On The Regeneration Of Dugesia Dorotocephala

1211 words - 5 pages Light exposure on the regeneration of Dugesia dorotocephala Introduction The objective of this experiment was to test the effect of light exposure on the regeneration of Dugesia dorotocephala. Dorotocephala is a species which belongs to the kingdom Animalia, class Turbellaria, order Seriata, these worms are classified in the suborder Tricladida based on the three main branches of their digestive system. They are further subdivided based upon

The Process Of Regeneration Essay

1332 words - 6 pages In the popular British Television Series, Doctor Who, an interesting theory was invented and proposed, the theory of Regeneration. The Doctor, who is the main character in Doctor Who, is a Time Lord. The Time Lords are a race of technologically advanced aliens from Gallifrey who possess two hearts and the ability to, you guessed it, regenerate. This ability allows the Doctor to be reborn every time he dies up to twelve times, except in the case

The Regeneration Of Limbs In Class Asteroids

1622 words - 6 pages The ability to regrow missing limbs is an incredible power that a few animals have mastered. The mystery behind how they do it is still not known very well. But hopeful soon we will be able to solve yet again another one of Mother Nature’s many mystery’s and puzzles. One of the best models of this incredible process is starfish. My goal in this paper is to find out about regeneration in starfish. Regeneration is the ability of an organism

Nerve Regeneration In The Peripheral Nervous System (Pns) Of Mammals

643 words - 3 pages INTRODUCTION Nerve Regeneration in the Peripheral Nervous System (PNS) of mammals PNS neurons in mammals have a capacity to regenerate and re innervate the target. However functional recovery varies, depending on the type and location of injury, age of the neurons and other factors, but the recovery is never complete. An overview of the regenerative response Following an injury, in the distal nerve stump a series of degenerative