| Miopelecanus Temporal range: | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Pelecaniformes |
| Family: | Pelecanidae |
| Genus: | † Miopelecanus Milne-Edwards, 1863 [1] |
| Species: | †M. gracilis |
| Binomial name | |
| †Miopelecanus gracilis (Milne-Edwards, 1863) | |
| Synonyms | |
| |
Miopelecanus is a fossil genus of pelicans, with the species M. gracilis, dating from the Early Miocene. [2]
Marine biology is the scientific study of the biology of marine life, organisms in the sea. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies species based on the environment rather than on taxonomy.
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Slipper lobsters are a family (Scyllaridae) of about 90 species of achelate crustaceans, in the Decapoda clade Reptantia, found in all warm oceans and seas. They are not true lobsters, but are more closely related to spiny lobsters and furry lobsters. Slipper lobsters are instantly recognisable by their enlarged antennae, which project forward from the head as wide plates. All the species of slipper lobsters are edible, and some, such as the Moreton Bay bug and the Balmain bug are of commercial importance.
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An aquatic ecosystem is an ecosystem found in and around a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms—aquatic life—that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. Freshwater ecosystems may be lentic ; lotic ; and wetlands.
Marine ecosystems are the largest of Earth's aquatic ecosystems and exist in waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content. Marine waters cover more than 70% of the surface of the Earth and account for more than 97% of Earth's water supply and 90% of habitable space on Earth. Seawater has an average salinity of 35 parts per thousand of water. Actual salinity varies among different marine ecosystems. Marine ecosystems can be divided into many zones depending upon water depth and shoreline features. The oceanic zone is the vast open part of the ocean where animals such as whales, sharks, and tuna live. The benthic zone consists of substrates below water where many invertebrates live. The intertidal zone is the area between high and low tides. Other near-shore (neritic) zones can include mudflats, seagrass meadows, mangroves, rocky intertidal systems, salt marshes, coral reefs, lagoons. In the deep water, hydrothermal vents may occur where chemosynthetic sulfur bacteria form the base of the food web.
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Thavamani Jegajothivel Pandian, a retired professor of Madurai Kamaraj University (MKU), is an Indian geneticist and ecologist, known for his pioneering studies in bioenergetics and animal ecology. A recipient of the WorldFish Naga Award, he is a former chairman of the Task Force Committee on Aqua and Marine Biotechnology of the Department of Biotechnology of the Government of India, a former president and a fellow of The World Academy of Sciences and an elected fellow of the Indian National Science Academy, National Academy of Sciences, India, Indian Academy of Sciences and the National Academy of Agricultural Sciences. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, in 1984, for his contributions to biological sciences.
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Oceanography and Marine Biology: An Annual Review is an annual review of oceanography and marine biology that has been published since 1963. It was originally edited by Harold Barnes. It was originally published by Aberdeen University Press and Allen & Unwin but is now published by CRC Press, part of Taylor & Francis. The 55th volume was published in 2017.
Photokinesis is a change in the velocity of movement of an organism as a result of changes in light intensity. The alteration in speed is independent of the direction from which the light is shining. Photokinesis is described as positive if the velocity of travel is greater with an increase in light intensity and negative if the velocity is slower. If a group of organisms with a positive photokinetic response is swimming in a partially shaded environment, there will be fewer organisms per unit of volume in the sunlit portion than in the shaded parts. This may be beneficial for the organisms if it is unfavourable to their predators, or it may be propitious to them in their quest for prey.
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