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Home > A Level > Biology > The effect of temperature on the hatching success of brine shrimps The effect of temperature on the hatching success of brine shrimpsYou can download this essay for free. All you need to do is register and submit at least one of your essays to us. Or you can purchase this essay for just $2 instantly without registering
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| Words: 2561 | Submitted: 28-Mar-2011 This is what the first 3 pages of the essay look like    DescriptionThe effect of temperature on the hatching success of brine shrimps. To investigate the effect of temperature on the hatching success of brine shrimps. To develop certain experimental skills, namely considering the ethical issue arising from the use of living organism.PreviewINTERNATIONAL EDUCATION CENTRE(INTEC) TITLE OF PRACTICAL: The effect of temperature on the hatching success of brine shrimps OBJECTIVE: To investigate the effect of temperature on the hatching success of brine shrimps To develop certain experimental skills, namely considering the ethical issue arising from the use of living organism. INTRODUCTION: In this experiment, the effect of temperature on the hatching success of brine shrimp is investigated. According to Wikipedia, Brine shrimp is the English name of the genus Artemia of aquatic crustaceans. Artemia, the only genus in the family Artemiidae, have evolved little since theTriassic period. The historical record of existence of Artemia dates back to 982, more than one thousand years ago, from Lake Urmia, Iran, while Schlösser was the first person to give drawings of Artemia in 1756. Artemia are found worldwide in inland saltwater lakes, but not in oceans. Artemia is a well known genus as one variety (sometimes identified as a new species Artemia salina x nyos), a cultivated subspecies of Artemia salina, is sold as a novelty gift, most often under the marketing name Sea-Monkeys. Brine shrimp eggs are metabolically inactive and can remain in total stasis for two years while in dry oxygen-free conditions, even at temperatures below freezing. This characteristic is called cryptobiosis meaning "hidden life" (also called diapause). While in cryptobiosis, brine shrimp eggs can survive temperatures of liquid air (?190 °C, ?310 °F) and a small percentage can survive above boiling temperature (105 °C, 221 °F) for up to two hours. Once placed in brine (salt) water, the cyst-like eggs hatch within a few hours. The nauplii, or larvae, are less than 0.5 mm in length when they first hatch. Brine shrimp have a biological life cycle of one year, during which they grow to a mature length of around one centimeter on average. This short life span, along with other characteristics such as their ability to remain dormant for long periods, has made them invaluable in scientific research, including space experiments. Just over a centimeter in size, the adult brine shrimp Artemia is an extremely wellknown animal because of its importance as a food source for fish and crustaceans raised in home aquariums, aquaculture systems, and in laboratories. One can buy brine shrimp at practically any pet display. It looks like a powdery brown substance but in reality the substance is thousands of cysts—eggs surrounded by protective cases. When added to water, these cysts will hatch into shrimp nauplii within a few hours. Under magnification, the elongated shape and eleven pairs of limbs give this organism a ... Download this essay in full now!Just upload at one of your essays to our database and instantly download your selection! Registration takes secondsOr you can download this essay for $2 immediately without registeringComments and reviewsReviews are written by members who have downloaded the essay No comments yet. If you download the essay you can review it afterwards. |
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