Annelid Essays

The nematode or roundworm is a parasitic multicellular organism which inhabits a diverse range of environments including mountains, deserts and oceans. This ecology based seminar was about nematodes predominantly inhabiting bio crusts and desert landscapes and the research that was done by a grad student in the Mohave desert. Topics that were covered were the introduction of the love triangle (aka the study system), the landscape side of the relationship, bio crust side of the relationship, and finally

Purpose: The purpose of this experiment is to understand and become more familiar with the system, anatomy, and structure of an earthworm. The earthworm is an invertebrate from the phylum Annelida genus Lumbricus (Wile). Earthworms inhabit anywhere where there is moisture, oxygen and an appropriate temperature (Worm Facts). They are usually around 7 to 8 cm long but can be as large as a snake going on to 14 inches (National Geographic Kids). Earthworms burrow through the ground, creating tunnels

Observations: During the dissection, there might have been a few things observed. Two main observations that may have been noted was the change of colour and ring like segments. It may have been noted that the back and front side of the earthworm consists of two different colours. The back side of the earthworm is referred to as the dorsal side and the front side of the earthworm is referred to as the ventral side. A distinct observation is the fact that the ventral surface of the earthworm is a

Introduction The giant tube worm is an incredible marine species, highly specialized to surviving in its unique, deep-sea environment. Its habitat, the Hydrothermal vents of the ocean floor, are at extreme temperatures of up and more than 700 degrees Fahrenheit. Being discovered in 1977, The Plume is a complex structure, with tightly stacked sheets of tissue forming a gill-like organ, and is used for taking up chemicals from the surrounding waters. The Plume also has lots of blood vessels and contains

Many annelids are capable of regeneration.[28] For example, Chaetopterus variopedatus and Branchiomma nigromaculata can regenerate both anterior and posterior body parts after latitudinal bisection.[29] The relationship between somatic and germline stem cell regeneration has been studied at the molecular level in the annelid Capitella teleta.[30] Leeches, members of the Annelid subclass Hirudinid, are incapable of segmental regeneration.[31]

Syllids are an annelid family that are great model organisms for studying regenerative processes because they are able to renew damaged body structures. More impressively, these annelids are capable of regenerating an entire body half. Studies concerning regenerative processes in annelids are possible due to their well-known life cycles and successful reproductions in laboratory settings. Syllidae in particular have become model species in research because of their complex life cycles and reproductive

There are many species of animals that play a role in breaking down materials. Bess beetles have a symbiotic relationship with a certain species of external mites and internal bacteria that assist it in breaking down wood material that is normally hard to digest (Price, 250). The beetles themselves cannot digest wood properly, so the anaerobic bacteria inside the bess beetles’ stomachs ferment the wood while the Phoretic mites on the beetles’ exteriors eat any unpleasant or unwanted fungi growing

Sexual reproduction is most common type of reproduction among the plants and animals. They are of following types; 1) Syngamy: The fusion of gametes takes place completely, if male and female gametes are produced by same cell or organism and both gametes fuse together to form a zygote, this is called as Autogamy, paramecium is its example. Another is Anisogamy in which some organisms produce two types of gametes. Both types of gametes differ from each other in their shape and size and are known

I have been fond of the natural habitats within the Hawaiian islands ever since I started exploring its native forests and coastlines. Growing up on the Big Island of Hawai’i, conservation of its native ecosystems and others alike became very important to me. My admiration for the environment around me reflects in my aspiration to pursue a career in restorative agriculture which integrates region-specific ecological principles in agricultural systems, and in my educational path toward agroecology

Is there a difference in the boring mechanism of different Osedax species and has the mechanism been consistent over time? Bioerosion is an important process in nature because it changes the present environment. Typically, it is used to describe the process of breaking down a hard substance in the ocean by a living ocean. The bioerosion of coral into small particles results in the fine sand that show up on our beaches. Different organisms use different mechanisms for removing the substrate. Parrotfish

Arthropods have been on Earth for an incredible length of time, diverging from their annelid ancestor five hundred or six hundred million years ago (John R. Meyer). In their transition from an aquatic environment to a terrestrial environment they encountered many problems just as plants did. These problems were the effect of gravity, water conservation, accessibility to oxygen, reproduction and dispersal as well as establishing niches on land. Gravity posed as a problem to animals on land as the

are also consumed. Another fauna that was affected by the fires were the platypus or Ornithorhynchus anatinus. Its habitat is restricted to streams and freshwater bodies. All platypus at Tidbinbilla died following the fire. Its diet consists of annelid worms, freshwater shrimp, insect larvae, freshwater yabby. Arboreal mammals such as Possums, gliders and koalas’ habitats were also extremely affected. Many have not been seen in this area since. Eastern grey Kangaroo or Macropus giganteus is another

Discuss convergence in animals, providing examples from both arthropods and vertebrates. (discussing convergence in the phylum arthropods with examples from within this phylum and likewise for the vertebrates.) Convergent evolution is the process in which organisms which are not closely related derive akin traits separately due to the need for adaptation to similar environments or ecological niches. There may be resemblances at a phylogenetic level, but the basic DNA sequences are different. Morphologically

Peristalsis is spontaneous or reflexive movements of the longitudinal and circular muscles, that happens in progressive wavelike contractions, fundamentally in the digestive tract but some times it also occurs in other hollow tubes of the body.In the human body esophagus, stomach, and intestines are the main parts in which peristaltic waves arise. These waves can be momentary, local reflexes or prolonged, consecutive contractions that are transmitted to the whole length of the organ, relying upon

Brown shrimp (Farfantepenaeus aztecus) Introduction: Is a species of marine penaeid shrimps which has an important commercial species in the USA. The species has several common names such as northern brown shrimp; golden shrimp, red shrimp or red tail shrimp. Distribution and habitats: The brown shrimp are found along the USA Atlantic coast from Massachusetts to Texas, and along the Atlantic coast of Mexico from Tamaulipas to Campeche and now been confirmed to occur in the Mediterranean, probably

Sandy beaches are important dynamic coastal systems that border most of the shores worldwide (Goncalves et al., 2008). On first glance, you would think that sandy beaches are barren, empty stretches of land. However, there is a large amount of marine life found on top of and within the sand. Sandy beaches are one of the most extensive intertidal systems worldwide, and the macrofauna of these habitats make up the greatest proportion of most open shores (Lercari et al., 2002). Ocean sandy beaches are

materials and as well as geological. The liquid states contain water and the gas states contains soil pores present in the air. Soils are the foundation of all land ecosystems and are home to many varieties of bacteria, fungi, insects, archaea, annelids, plants and algae. These organisms that are found in the soil provide food and nutrients that support the organisms living below and upper ground. Each one of these microorganisms has a special job that benefits the soil which as a result help animals

Earthworm and Bullfrog comparison 1/14/2018 Dissecting the Animal Kingdom pd 7 pg1 The organisms i will be comparing are the Earthworm and the Bullfrog, the Earthworm is part of the phylum Annelid and the Bullfrog is part of the Phylum Chordate. The earthworm is a invertebrate and the Bullfrog is a vertebrate. This means that the Earthworm does not have a skeletal structure in its body but a bullfrog does. A key characteristic of both the animals is that they have bilateral symmetry

Bass, a freshwater fish, consist of perch looking fishes. The word bass came from the Middle English word “bars” or perch. Bass families include Serranidae or sea basses, Centrarchidae or sunfishes and moronidae or temperate basses. Bass belongs to the order Perciformes which also includes tilapia, tunas, and swordfishes. Bass represents an important game fish and food source for humans. In bass fishing, there are ways on how to catch one, when to catch one, what tools to bring, and what are the

Biology: GREATER FLAMINGO, Phoenicopterus ruber roseus Coloration: The palest of the flamingos, the head, neck and body are white or pink; wing-coverts are red; primaries and secondaries are black. Legs are pink; bills are deep pink with black tip; and eyes are yellow. Description: Similar in proportions to P.r. ruber. The largest individuals are slightly larger than P.r. ruber, but on average there is little difference in size between the two races. Voice Flamingos, particularly Phoenicopterus