Crustacean

bivittatus to be very cautious at first. They would run to little hiding holes and some of the larger ones had nests to protect. I noticed which crevices were nests by marking rocks with a knife and taking notes of markings on fish such as scars and coloration. After awhile of being underwater they began to become more curious of me and came out of hiding. After 30 minutes on my first dive observing them, they didn’t seem to mind my presence at all, some of the larger males would even swim up to my mask and start flaring their fins trying to intimidate me. After about 50 min on my first dive i started to flip over rocks to expose small crustaceans and stirring up the sediment on the bottom. After flipping the rocks i was surrounded by H.bivittatus, they were no longer fighting each other or me they were just focusing on the food, however they still would not let any other species, such as mangrove snapper, come in close to fee. I did this every dive in much the same manner, such as mangrove snapper, come in close to feed. I did this every dive in much the same manner, after about 45 minutes or so i would start turning these rocks up trying to get a good vies of their feeding and also to know how territorial they are towards each other and other species of fish. It seemed on my fourth dive and fifth dive, they were immediately used to my presence and started encircling me just wanting…

(Robison and Kaesler, 1987) Trilobites had highly-calcified exoskeletons, at a magnitude on-par with ostracodes and other crustaceans. The size, articulation, and morphology of the trilobite exoskeleton are useful descriptors. In some cases, these properties can serve as distinguishing characters; in other cases, minor differences in these properties can exist among genera and even species. Variations in size and morphology of the tagmata may also be used to identify developmental phases in…

mollusks, oxygen utilization is relatively high—up to 70 percent of the oxygen is extracted from the water passing over the gills in the European crayfish Astacus. A decrease in the partial pressure of oxygen in the water elicits a marked increase in ventilation (the volume of water passing over the gills); at the same time, the rate of oxygen utilization declines somewhat. Although more oxygen is extracted per unit of time, the increased ventilation increases the oxygen cost of breathing. The…

a pH of 7; most water is not exactly pH 7 due to minerals and other contaminates. Most Brine shrimp are also a very important food resource to fish all around the world. They also provide service to the lakes and rivers by ridding them of waste such as phosphorus. Brine shrimp have been an important part of many ecosystems for over six hundred thousand years. The clean, provide a source of food, and provide a money source for the economy. This leads into the fact of why research on brine shrimp…

Hey there, did you know there are seventy-five different species of stingrays? That's a lot! Sting Rays are also closely related to sharks. The manta rays are the biggest species yet. They can reach up to seven feet wide and a length of fourteen feet long. Their diet is crustaceans, planktons, and small fish. The manta rays like staying just above the seabed to get cleaned. They also have the largest brain of any sea creature, so they probably make even the average dolphin jealous. Manta rays…

integrity of the author. He establishes his credibility in these main ways: having a clear statement of participation and by dedicating a section of his article to scientific descriptions. First, Wallace, in no unclear terms, declares that he physically attended the festival. In doing so, the immediate response to, “Your assigned correspondent saw it all, accompanied by one girlfriend and both parents…,” is that of an “insider’s” perspective. For example, if someone was curious about the…

Brine Shrimp (Artemia Salina) are crustaceans found all over the world. They are found in inland bodies of water such as Great Salt Lake, coast of San Francisco, Caspian Sea and other bodies of salt water (GSLEP). Brine Shrimp can start out as living or be born as a cyst. They will born as cyst to survive “through unfavorable conditions and then hatch when conditions are right.” Brine shrimp are able to live in some of the worst living conditions possible such as hot temperatures and high…

The Effect of pH Level on the Amount of Brine Shrimp Hatched By: Maggie Lazaroski and Paloma Diaz Period 1, January 8 2014 Introduction Paragraph In this experiment, we will be using brine shrimp to measure the effects of pH on the survival rate of invertebrate creatures. We will use white vinegar and baking soda to alter the level of pH, the white vinegar to make the pH level higher and the baking soda to make the pH lower. We will be feeding the shrimp yeast, which is completely…

the valve in 2002, the increased salinity in these three areas has allowed for marine and estuarine fauna to reinhabit the marsh (Smith & Medeiros, 2013). However, East Harbor has only been partially restored because an additional small culvert under High Head Road that connects Moon Pond to the Main Lagoon (Thiet et al. 2014) is too small to create significant tides in the Main Lagoon (Portnoy, 2006). Despite this, benthic invertebrate diversity and density have increased significantly (Thiet…

Introduction The diversity of arthropods extends beyond the location factor alone as multiple influences such as humidity levels, atmospheric content and other environmental conditions contribute to their widespread assortment. Gaps in diversity indices do not only occur amongst insect populations residing at regionally distinct locations as these influences are also reflected in arthropod communities over small distances. Climatic conditions often lead to insect migrations and extinctions which…