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Sacculina Pulchella
''Sacculina'' is a genus of barnacles that is a parasitic castrator of crabs. They belong to a group called '' Rhizocephala''. The adults bear no resemblance to the barnacles that cover ships and piers; they are recognised as barnacles because their larval forms are like other members of the barnacle class Cirripedia. The prevalence of this crustacean parasite in its crab host can be as high as 50%. Habitat ''Sacculina'' live in a marine environment. During their larval stage they are pelagic, but as they form into adults they live as ectoparasites on crabs. Their primary host is the green crab, which is native to the Eastern Atlantic Ocean. Though these crabs have spread to other bodies of waters, it is not believed that ''Sacculina'' barnacles have traveled with them to these new localities. Anatomy The body of the adult parasite can be divided into two parts: one part is called the "externa" where the bulbous reproductive organ of the parasite sticks out of the abdomen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Vaughan Thompson
John Vaughan Thompson FLS (19 November 1779 – 21 January 1847) was a British military surgeon, marine biologist, zoologist, botanist, and published naturalist. Early years John Vaughan Thompson was born in British controlled Brooklyn on Long-Island in the Province of New York, North America on the 19th November 1779. The family returned to England some time after the American victory in the American War of Independence. He studied medicine at the University of Edinburgh (1797–1798), reading anatomy, surgery, midwifery, and botany, before joining the Army in 1799. Work He grew up around Berwick-upon-Tweed where he wrote his first book ''A Catalogue of Plants Growing in the Vicinity of Berwick Upon Tweed'' which was published in 1807. In each of his military postings such as the ''West Indies and Guiana (1800–1809)'', ''Mauritius and Madagascar (1812–1816)'', he continued his natural history studies with two of his papers being read before the Linnean Society on Lond ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
