Summary: Complex Life Cycles Of Common Marine Invertebrates

The Callinectes sapidus also known commonly as the Maryland Blue Crab, is a crustacean found in the Chesapeake Bay. The blue crab is found in aquatic environments, most often in estuaries. It characterized by it’s blue claws. The blue crabs undergo a life cycle of: zoeae, megalop, juvenile, and adulthood. The blue crab’s hard shells serve as a protective barrier for external dangers. The Callinectes sapidus comes from the order of Decapods, whereby it’s carapace has now evolved to be better suited for swimming. Of interest is the blue crab’s mating

In the early sixteenth century, Spain conquered Mexico and turned it into one of their most lucrative colonies. In the search for land, labor and natural resources, Spain found everything they were looking for in Mexico. During the colonial period, Mexico was simply another kingdom of the vast Spanish Empire. As Spain largely benefited, the indigenous civilizations of Mexico were ravaged and left to be entirely dependent on their foreign counterpart. It wasn’t until the independence movement in the early nineteenth century that Mexico seemed to have some hope of being released from the hands of imperialism. Unfortunately, following independence, Mexico suffered from a half a century of economic

Three years ago, the author took a trip to Delaware. As his family was walking on the beach they came across some horseshoe crabs mating. He wondered how they have changed. The type of horseshoe crab he saw along the beach was called “limulus polyphemus”. Limulus Polyphemus is not found in the fossil records. The fossil record for horseshoe crabs is deeper than 20 million years, and the

Mr. Hollis is enrolled FULLTIME AS A CANDIDATE for a Doctorate of Philosophy, Oceanography and Coastal Sciences at Louisiana State University in the Department of Oceanography and Coastal Sciences.

In Order to analyse the Distribution of C.brunneas and L.scobina, Year twelve Biology classes had to go down to the “ Sirens’ Rock” on the south coast of wellington. The Habitat is mainly rock but there are rock pools from when the high tide went down the water couldn’t get out. Chamapsipho brunnea or Brown Barnacle are a type of barnacle found in the mid-high tides parts of rocky shores. Brown Barnacle are also known as filter feeders so they feed off of algae and plankton. Brown Barnacle are not found in the low tide zones for this reason their shells can close off meaning that they can survive out of water longer by keeping water locked in their shells. Lepsiella Scobina or oyster borer are a predatory sea snail species. they feed off of barnacle and other prey they are found in the mid-high tide zones of rocky shores and not low tide. Oyster borer are frequently hidding in crevices to hide from predators. Oyster borer are not found in high tide but mid-low tides as they can not close their shells off completely

Limulus polyphemus spend their adult life either in estuaries or on the continental shelf during the winter months (ASMFC 2015). It is during the spring in which the horseshoe crabs migrate back to sandy beaches to spawn. Typically, spawning takes places during high tide with a new or full moon but is much higher during nights with a full moon. . During spawning the males grasp onto the females before heading to shore. Once the pair is on the beach, the female will then dig multiple nests or clusters and deposit her eggs while the male fertilizes them (National Wildlife Federation 2015). The areas chosen for egg laying are typically within bays and coves, which protects the nests from wave energy (ASMFC 2015). Each year a female will lay about 90,000 eggs in different clusters. These eggs play the most vital ecological role for migrating shorebirds as an energy source. Without areas such as the Delaware Bay, where the largest spawning population in the world is found, the migratory birds such as the Red Knot would not have a rest area with the appropriate amount of energy resources to refuel their

Background knowledge demands: For this book, students must know what fish and scales are. They will also need to know that fish live under the sea.

Biophysical interactions refer to the ways in which the four spheres, atmosphere, lithosphere, hydrosphere and biosphere interact with each other, which in turn leads to their diverse ecosystem functioning and the extent and nature to which they operate. The Great Barrier Reef is a diverse underwater marine ecosystem located off the coast of northern Queensland, it stretches 2300km to Fraser Island, has 3 000 different reefs and it is considered the largest living structure on the planet. The biophysical interactions including the dynamics of weather and climate, geomorphic and hydrological process biogeographical processes and the adjustments in response to natural stress all lead to the diversity and functioning of the Great Barrier Reef

The purpose of this experiment was to observe the light that the Tomopteris emits. They collected Tomopteris from Monterey Bay off the coast of California. They then stimulated the Tomopteris to produce light so that they could observe the light that it produced. The researchers took photos and measured the amount of light that was emitted per Tomopteris. One interesting discovery was a Tomopteris that emits a blue light which is rare since most Tomopteris emit a yellow-orange light. The researchers tried to create explanations as to why this Tomopteris emits blue light. They think that “different protein complements may be responsible for the light in different species”. However, this isn’t their only explanation for this rare blue emitting Tomopteris. The other explanation is that “this could potentially reflect different ecological roles of the two light colors”. Researchers concluded that with further testing the blue-light emitting Tomopteris may be considered a species of their own.

4. The life cycle of the Clonorchis Sinensis starts as an egg. It is laid in the biliary ducts and stool. It will then migrate from the snail to free-swimming in water. Then they will migrate to a fish. Maturation takes about 1 month. The Adults live in the Biliary ducts.

The 59-year-old author, Sy Montgomery, has written 20 books, each based on a specific research or expedition she has taken part in. Her studies, which she descriptively incorporates into her novels, have warranted her various book awards and acclaims. She plunges herself into the lives and mysteries of Earth’s wildlife in order to gain a further understanding of how particular organisms thrive in their wild, dangerous environments. Although Montgomery was no expert in the field of cephalopods, she quickly learned all she could about the intriguing invertebrates through fellow researcher, experts, aquarists, divers, and colleagues encountered throughout her studies about octopuses. Through diligent research via articles, studies, field

The results displayed below in figure 1. depicts a food web that shows the relationship between primary producers; (coral, black pine and seaweed), filter feeders; (muscles and barnacles), primary consumers; (chiton) and secondary consumers; (starfish and whelk) within the community. Table 1. Showcases experiments 1-4 and their initial and final populations. Experiment 1. shows the removal of the green crabs. Experiment 2. Displays what would occur if all the species remained in the pool. Experiment 3. Demonstrates what would occur if All starfish were removed and crabs were added to the population. Lastly, Experiment 4. The dominant predators were removed from the population which consisted of starfish and Crabs.

The dream of having majored in marine biology is one thing, but to get to have a marine biology degree is a fifth grader’s dream come true. The environment is heading in a rough direction. For example, ocean acidification is already a problem. The decrease in pH of our ocean acidity is causing coral reefs to die out—which houses thousands of organisms’ homes and food sources. Due to the contaminants, we release into the natural environment, we are slowly losing ecosystems every day. Therefore, I want to be the researcher to help save the oceanic life from these horrible conditions. Also, the career of marine biology can take a person anywhere, from the coasts of the Bahamas all the way to the depths of the Arctic Ocean. This provides the advantage

I aspire to be a scientist who makes real connections between seemingly disparate problems or challenges and finds human value in scientific knowledge. For my doctoral research, I want to study unfamiliar marine organisms in unfamiliar habitats to contribute to new knowledge and discover new species. To these ends, I will connect my graduate thesis on sea cucumbers with my ongoing research on mesophotic reefs. Sea cucumbers (Echinodermata: Holothuroidea) are diverse worm-like organisms that evolved and diversified for over 400 million years. Mesophotic reefs are found at 30 to 150 meter depths and developed after the last Ice Age, over 10,000 years ago. In my country, the Philippines, these deep reefs offer something of a "last hope" for

     Coral animals begin life as free-floating larvae, but settle on the sea floor in sedentary colonies. The term "coral" applies both to these animals and to their skeletons, particularly the skeletons of stone-like corals (Discover 1997).