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Bunodosoma Californicum
''Bunodosoma californicum'' is a species of sea anemone. It was first described to science by Oskar Carlgren in 1951. The type specimen that Carlgren used to describe the species was collected by Ed Ricketts in Puerto Escondido during his trip to the Gulf of California with John Steinbeck recounted in ''The Log From the Sea of Cortez''. Description The column is variable in color from olive green to greenish-brown to rusty red. The column may be up to tall, with a base between and wide. The column is covered in rounded bumps called vesicles. Unlike some similar sea anemones, these vesicles are not adhesive, and thus the column of ''Bunodosoma californica'' will typically be clean, not covered with bits of shell or other detritus. The vesicles are arranged in neat longitudinal rows at the base of the column and more random, but still densely packed, further up the column. They are about the same color as the column. The oral disc is the same color as the column and ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Anemone
Sea anemones ( ) are a group of predation, predatory marine invertebrates constituting the order (biology), order Actiniaria. Because of their colourful appearance, they are named after the ''Anemone'', a terrestrial flowering plant. Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia. As cnidarians, sea anemones are related to corals, jellyfish, tube-dwelling anemones, and ''hydra (genus), Hydra''. Unlike jellyfish, sea anemones do not have a Jellyfish#Life history and behavior, medusa stage in their life cycle. A typical sea anemone is a single polyp (zoology), polyp attached to a hard surface by its base, but some species live in soft sediment, and a few float near the surface of the water. The polyp has a columnar trunk topped by an oral disc with a ring of tentacles and a central mouth. The tentacles can be retracted inside the body cavity or expanded to catch passing prey. They are armed with cnidocytes (stinging cells). In many specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ed Ricketts
Edward Flanders Robb Ricketts (May 14, 1897 – May 11, 1948) was an American marine biologist, ecologist, and philosopher. Renowned as the inspiration for the character Doc in John Steinbeck's 1945 novel '' Cannery Row'', Rickett's professional reputation is rooted in '' Between Pacific Tides'' (1939), a pioneering study of intertidal ecology. A friend and mentor of Steinbeck, they collaborated on and co-authored the book, ''Sea of Cortez'' (1941). Eleven years later, and just three years after the death of Ed Ricketts, John Steinbeck reprinted the narrative portion of their coauthored book with a new publisher, with Steinbeck removing Ricketts as coauthor, adding a biography of Ed Ricketts and re-titling the book '' The Log from the Sea of Cortez'' (1946). Steinbeck also added a eulogy for Ricketts, but it was met with public backlash. Gwyn Conger Steinbeck, the writer's second wife, thought highly of Ricketts. She said, "There was such a special magic about Ed Ricketts, and, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puerto Escondido, Baja California Sur
Puerto Escondido is a large natural harbor in the Mexican state of Baja California Sur. It is located in the Loreto Municipality 28 km south of Loreto, on Federal Highway 1 on the western shore of the Gulf of California. French architect and urban planner François Spoerry François Henry Spoerry (28 December 1912 – 11 January 1999) was a French architect, developer, and urban planner who created the seaside town of Port Grimaud. He was an Officier of the Légion d'honneur and an Officier of the Ordre des Art ... designed the neighborhood of Puerto Escondido, but it was abandoned after only 3 buildings were constructed. The nearest community to Puerto Escondido is Tripui, a privately owned leasehold community, largely of ex-pat Americans and Canadians with a store, hotel and restaurant. It is about 1 kilometer from Puerto Escondido. A new residential community is being constructed on one of original artificial islands called Waicuri. The completed first phase will ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gulf Of California
The Gulf of California (), also known as the Sea of Cortés (''Mar de Cortés'') or Sea of Cortez, or less commonly as the Vermilion Sea (''Mar Vermejo''), is a marginal sea of the Pacific Ocean that separates the Baja California peninsula from the Mexico, Mexican mainland. It is bordered by the states of Baja California, Baja California Sur, Sonora, and Sinaloa with a coastline of approximately . Rivers that flow into the Gulf of California include the Colorado River, Colorado, Fuerte River, Fuerte, Mayo River (Mexico), Mayo, Sinaloa River, Sinaloa, Sonora River, Sonora, and the Yaqui River, Yaqui. The surface of the gulf is about . Maximum depths exceed because of the complex geology, linked to plate tectonics. The gulf is thought to be one of the most diverse seas on Earth and is home to more than 5,000 species of micro-invertebrates. Parts of the Gulf of California are a UNESCO World Heritage Site. Geography History The marine expeditions of Fortún Ximénez, Hernán Cort� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Steinbeck
John Ernst Steinbeck ( ; February 27, 1902 – December 20, 1968) was an American writer. He won the 1962 Nobel Prize in Literature "for his realistic and imaginative writings, combining as they do sympathetic humor and keen social perception". He has been called "a giant of American letters." During his writing career, he authored 33 books, with one book coauthored alongside Edward Ricketts, including 16 novels, six non-fiction books, and two collections of short stories. He is widely known for the comic novels ''Tortilla Flat'' (1935) and ''Cannery Row (novel), Cannery Row'' (1945), the multigeneration epic ''East of Eden (novel), East of Eden'' (1952), and the novellas ''The Red Pony'' (1933) and ''Of Mice and Men'' (1937). The Pulitzer Prize–winning ''The Grapes of Wrath'' (1939) is considered Steinbeck's masterpiece and part of the Western canon, American literary canon. By the 75th anniversary of its publishing date, it had sold 14 million copies. Much of Steinbec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Log From The Sea Of Cortez
''The Log from the Sea of Cortez'' is an English-language book written by American author John Steinbeck and published in 1951. It details a six-week (March 11 – April 20) marine specimen-collecting boat expedition he made in 1940 at various sites in the Gulf of California (also known as the Sea of Cortez), with his friend, the marine biologist Ed Ricketts. It is regarded as one of Steinbeck's most important works of non-fiction chiefly because of the involvement of Ricketts, who shaped Steinbeck's thinking and provided the prototype for many of the pivotal characters in his fiction, and the insights it gives into the philosophies of the two men. ''The Log from the Sea of Cortez'' is the narrative portion of an earlier work, ''Sea of Cortez: A Leisurely Journal of Travel and Research'', which was published by Steinbeck and Ricketts shortly after their return from the Gulf of California, and combined the journals of the collecting expedition, reworked by Steinbeck, with Ric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intertidal Zone
The intertidal zone or foreshore is the area above water level at low tide and underwater at high tide; in other words, it is the part of the littoral zone within the tidal range. This area can include several types of habitats with various species of life, such as sea stars, sea urchins, and many species of coral with regional differences in biodiversity. Sometimes it is referred to as the ''littoral zone'' or '' seashore'', although those can be defined as a wider region. The intertidal zone also includes steep rocky cliffs, sandy beaches, bogs or wetlands (e.g., vast mudflats). This area can be a narrow strip, such as in Pacific islands that have only a narrow tidal range, or can include many meters of shoreline where shallow beach slopes interact with high tidal excursion. The peritidal zone is similar but somewhat wider, extending from above the highest tide level to below the lowest. Organisms in the intertidal zone are well-adapted to their environment, facing high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cnidocyte
A cnidocyte (also known as a cnidoblast) is a type of cell containing a large secretory organelle called a ''cnidocyst'', that can deliver a sting to other organisms as a way to capture prey and defend against predators. A cnidocyte explosively ejects the toxin-containing cnidocyst which is responsible for the stings delivered by a cnidarian. The presence of this cell defines the phylum Cnidaria, which also includes the corals, sea anemones, hydrae, and jellyfish. Cnidocytes are single-use cells that need to be continuously replaced. Structure and function Each cnidocyte contains an organelle called a cnidocyst, which consists of a bulb-shaped capsule and a hollow, coiled tubule that is contained within. Immature cnidocytes are referred to as cnidoblasts or nematoblasts. The externally oriented side of the cell has a hair-like trigger called a cnidocil, a mechano-chemical receptor. When the trigger is activated, the tubule shaft of the cnidocyst is ejected and, in the case ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gonochorism
In biology, gonochorism is a sexual system where there are two Sex, sexes and each individual organism is either male or female. The term gonochorism is usually applied in animal species, the vast majority of which are gonochoric. Gonochorism contrasts with simultaneous hermaphroditism but it may be hard to tell if a species is gonochoric or Sequential hermaphroditism, sequentially hermaphroditic e.g. parrotfish, ''Patella ferruginea''. However, in gonochoric species individuals remain either male or female throughout their lives. Species that reproduce by Thelytokous, thelytokous parthenogenesis and do not have males can still be classified as gonochoric. Terminology The term is derived from Greek language, Greek ''gone'' 'generation' + ''chorizein'' 'to separate'. The term gonochorism originally came from German ''Gonochorismus''. Gonochorism is also referred to as unisexualism or gonochory. Evolution Gonochorism has Convergent evolution, evolved independently multiple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spawn (biology)
Spawn is the eggs and sperm released or deposited into water by aquatic animals. As a verb, ''to spawn'' refers to the process of freely releasing eggs and sperm into a body of water (fresh or marine); the physical act is known as spawning. The vast majority of aquatic and amphibious animals reproduce through spawning. These include the following groups: * Bony fishes * Crustaceans (such as crabs, shrimps, etc.) *Mollusks (such as oysters, octopus, squid) *Echinoderms (such as sea urchins, sea stars, sea cucumbers, etc.) * Amphibians (such as frogs, toads, salamanders, newts) * Aquatic insects (such as dragonflies, mayflies, mosquitoes) *Coral, which are living colonies of tiny, aquatic organisms—not plants, as they are sometimes perceived to be. Corals, while appearing sedentary or botanical by nature, actually spawn by releasing clouds of sperm and egg cells into the water column, where the two mix. As a general rule, aquatic or semiaquatic reptiles, birds, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fission (biology)
Fission, in biology, is the division of a single entity into two or more parts and the regeneration of those parts to separate entities resembling the original. The object experiencing fission is usually a cell (biology), cell, but the term may also refer to how organisms, bodies, populations, or species split into discrete parts. The fission may be ''binary fission'', in which a single organism produces two parts, or ''multiple fission'', in which a single entity produces multiple parts. Binary fission Organisms in the domain (biology), domains of Archaea and Bacteria reproduce with binary fission. This form of asexual reproduction and cell division is also used by some organelles within eukaryote, eukaryotic organisms (e.g., mitochondrion, mitochondria). Binary fission results in the reproduction of a living prokaryote, prokaryotic cell (biology), cell (or organelle) by dividing the cell into two parts, each with the potential to grow to the size of the original. Fission of pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
