Virginia Beach‚ Virginia • The Bay ’s width ranges from 4 miles near Aberdeen‚ Maryland‚ to 30 miles near Cape Charles‚ Virginia Major Components Chesapeake Bay Ecosystem Biotic Components (Living) • • • • • • 350 species of fish Crabs Shellfish Birds Mammals Reptiles and Amphibians (Bay stat) Abiotic Components (Non-living) • • • • • Water Quality Sunlight Weather Soil Air (pollution) Current Human Impact on Chesapeake Bay Ecosystem Air Pollution
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whereas ticks and mites belong to another group of arthropods‚ the Acarina. Unlike adult insects they have only two main sections to their body‚ and the adults have four pairs of legs (as opposed to three pairs in insects). Bedbugs‚ head lice and crab lice do not carry disease‚ but their biting can be a serious nuisance. However‚ important diseases of humans and animals are transmitted by other arthropods dealt with here‚ among them the following: — — — — epidemic typhus and epidemic relapsing fever
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hermit crabs on snail shell availability. Hermit crab species require snail shells to survive in their environment (Tricarico 2006). Shells are essential to habitat structure and processes (Gutierrez 2003). Hermit crabs are soft bodied crustaceans that cannot produce a hard exoskeleton themselves. The snail shells provide shelter from
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Horseshoe crabs are not the prettiest creatures‚ nor are they the most well-respected. No conservation organization has one of these homely sea-goers as their mascot‚ but they should. They are far more interesting and important than they appear. Their blood‚ in particular‚ is a fascinating wonder of the living world. It has several qualities that make it unique among animals and useful to medicine‚ but this limited resource is becoming increasingly endangered. The most obvious difference between
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the Foliate Kelp Crab. On the left is one of many organisms in the kelp forest the Foliate Kelp crab. Kelp crabs originated from Animalia‚ on the kelp crabs back shell it is colored chestnut brown. The stomach of the Foliate Kelp crab is red they often use these colors as camouflage by attaching kelp to their backs. Kelp crabs are also known to grow from four to six inches long. The main food of the Kelp crab is kelp that’s one of the reasons it’s called the kelp crab. Kelp crabs also have many
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“Hmmmm doesn’t this hermit crab look like a Zebra?” “What?” my mom asked. “The hermit crab” I repeated. “Oh‚ yes‚ very nice Kiel‚.” My mom is almost impossible to get off her book. She is like trying to pry off a small deep nail with only your
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Shells and shell competition Underwater photo of a hermit crab and gastropod shell Hermit crabs fighting over a shell As hermit crabs grow they require larger shells. Since suitable intact gastropod shells are sometimes a limited resource‚ there is often vigorous competition among hermit crabs for shells. The availability of empty shells at any given place depends on the relative abundance of gastropods and hermit crabs‚ matched for size. An equally important issue is the population of organisms
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Purple Shore Crabs‚ Hemigrapsus nudus‚ are small crabs that are similar in structure to true crabs. They have carapaces that are commonly found to be 4-5.6 cm. A distinguishing characteristic of the Purple Shore Crabs is their lack of setae. They are usually found to be dark purple‚ olive green or red with white or cream marks‚ on their carapace. Their legs match the color of their carapace but have white tipped claws. Though Purple Shore Crabs are capable of living out of water for several
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The no tipping club has just earned its biggest member yet. Joe’s Crab Shack has just announced that it will abolish tipping at 18 of its branches around the country. The move marks the first time a major restaurant chain has dabbled with a tip-free salary scale. According to Restaurant Business‚ servers at the affected locations will see their new wages start at $14 an hour. That figure may rise depending on the employees’ track record and past performance says the report. The salary increase
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The crab of Phylum Anthropoda is much more advanced and complex than the sponges of Phylum Porifera. One of the main differences that makes crabs more advanced is the fact that crabs have a body cavity which allows them to have different organ systems‚ this is called coelmate. A sponge does not posess a body cavity‚ which is called acolemate‚ but they do posess a Gastrovascular cavity. A Gastrovascular cavity has only one opening‚ the mouth/anus. Being a coelomate is more advanced because it allows
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