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Spicara Flexuosa
''Spicara maena'', the blotched picarel, is a species of ray-finned fish native to the eastern Atlantic Ocean, the Mediterranean Sea and the Black Sea. The male grows to a maximum length of about , and the female reaches . This fish is fished commercially in some areas. Genetic studies have confirmed that Spicara flexuosa is a separate species, not a synonym for Spicara maena Description ''Spicara maena'' is a fairly deep-bodied fish, with males reaching a maximum length of about and females . The upper jaw is protrusible and the mouth contains several rows of small teeth. The single dorsal fin has eleven spines and twelve soft rays and the anal fin has three spines and nine or ten soft rays. There are sixty-eight to seventy scales on the lateral line. This fish is blue-grey above with silvery sides and a scattering of small dark spots. There is usually one large dark blotch above the tip of the pectoral fin. ''Spicara maena'' is a rather variable species. It has many synonyms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List Of Threatened Species
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the International Union for Conservation of Nature, IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to International Unio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spicara Flexuosa
''Spicara maena'', the blotched picarel, is a species of ray-finned fish native to the eastern Atlantic Ocean, the Mediterranean Sea and the Black Sea. The male grows to a maximum length of about , and the female reaches . This fish is fished commercially in some areas. Genetic studies have confirmed that Spicara flexuosa is a separate species, not a synonym for Spicara maena Description ''Spicara maena'' is a fairly deep-bodied fish, with males reaching a maximum length of about and females . The upper jaw is protrusible and the mouth contains several rows of small teeth. The single dorsal fin has eleven spines and twelve soft rays and the anal fin has three spines and nine or ten soft rays. There are sixty-eight to seventy scales on the lateral line. This fish is blue-grey above with silvery sides and a scattering of small dark spots. There is usually one large dark blotch above the tip of the pectoral fin. ''Spicara maena'' is a rather variable species. It has many synonyms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aegean Sea
The Aegean Sea ; tr, Ege Denizi (Greek language, Greek: Αιγαίο Πέλαγος: "Egéo Pélagos", Turkish language, Turkish: "Ege Denizi" or "Adalar Denizi") is an elongated embayment of the Mediterranean Sea between Europe and Asia. It is located between the Balkans and Anatolia, and covers an area of some 215,000 square kilometres. In the north, the Aegean is connected to the Marmara Sea and the Black Sea by the straits of the Dardanelles and the Bosphorus. The Aegean Islands are located within the sea and some bound it on its southern periphery, including Crete and Rhodes. The sea reaches a maximum depth of 2,639m to the west of Karpathos. The Thracian Sea and the Sea of Crete are main subdivisions of the Aegean Sea. The Aegean Islands can be divided into several island groups, including the Dodecanese, the Cyclades, the Sporades, the Saronic Islands, Saronic islands and the North Aegean islands, North Aegean Islands, as well as Crete and its surrounding islands. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gulf Of İzmir
The Gulf of İzmir ( tr, İzmir Körfezi), formerly known as the Gulf of Smyrna, is a gulf on the Aegean Sea, with its inlet between the Karaburun Peninsula and the mainland area of Foça. It is in length by in breadth, with an excellent anchorage. The city of İzmir, an important port city of Turkey, surrounds the end of the gulf. Geography The northern limit of the Gulf of İzmir is defined as a 13 nmi line running from Cape Kanlıkaya () of the Karaburun Peninsula, to Cape Aslan () of Foça. The surface area of the gulf is , while its shore length is . Uzunada located in the Gulf of İzmir is Turkey's fourth largest island. Other islands of the gulf include Hekim Island, Foça Islands ( Orak Island, Fener Ada, Incir Ada, Metalik Ada), Çiçek Islands ( Yassıca Island, Pırnarlı Island, İncirli Island, Akça), Karantina Island, Yılan Island, and Büyük Ada. Seventeen rivers empty into the gulf, most notably the Gediz and the Meles. Gediz Delta, which is a Ramsa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sequential Hermaphroditism
Sequential hermaphroditism (called dichogamy in botany) is a type of hermaphroditism that occurs in many fish, gastropods, and plants. Sequential hermaphroditism occurs when the individual changes its sex at some point in its life. In particular, a sequential hermaphrodite produces eggs (female gametes) and sperm (male gametes) at different stages in life. Species that can undergo these changes from one sex to another do so as a normal event within their reproductive cycle that is usually cued by either social structure or the achievement of a certain age or size. In animals, the different types of change are male to female (protandry or protandrous hermaphroditism), female to male (protogyny or protogynous hermaphroditism), bidirectional (serial or bidirectional hermaphroditism). Both protogynous and protandrous hermaphroditism allow the organism to switch between functional male and functional female. Bidirectional hermaphrodites have the capacity for sex change in either directi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zooplankton
Zooplankton are the animal component of the planktonic community ("zoo" comes from the Greek word for ''animal''). Plankton are aquatic organisms that are unable to swim effectively against currents, and consequently drift or are carried along by currents in the ocean, or by currents in seas, lakes or rivers. Zooplankton can be contrasted with phytoplankton, which are the plant component of the plankton community ("phyto" comes from the Greek word for ''plant''). Zooplankton are heterotrophic (other-feeding), whereas phytoplankton are autotrophic (self-feeding). This means zooplankton cannot manufacture their own food but must eat other plants or animals instead — in particular they eat phytoplankton. Zooplankton are generally larger than phytoplankton, most are microscopic, but some (such as jellyfish) are macroscopic and can be seen with the naked eye. Many protozoans (single-celled protists that prey on other microscopic life) are zooplankton, including zooflagellates, fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spicara Maena
''Spicara maena'', the blotched picarel, is a species of ray-finned fish native to the eastern Atlantic Ocean, the Mediterranean Sea and the Black Sea. The male grows to a maximum length of about , and the female reaches . This fish is fished commercially in some areas. Genetic studies have confirmed that Spicara flexuosa is a separate species, not a synonym for Spicara maena Description ''Spicara maena'' is a fairly deep-bodied fish, with males reaching a maximum length of about and females . The upper jaw is protrusible and the mouth contains several rows of small teeth. The single dorsal fin has eleven spines and twelve soft rays and the anal fin has three spines and nine or ten soft rays. There are sixty-eight to seventy scales on the lateral line. This fish is blue-grey above with silvery sides and a scattering of small dark spots. There is usually one large dark blotch above the tip of the pectoral fin. ''Spicara maena'' is a rather variable species. It has many synonyms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Posidonia Oceanica
''Posidonia oceanica'', commonly known as Neptune grass or Mediterranean tapeweed, is a seagrass species that is endemic to the Mediterranean Sea. It forms large underwater meadows that are an important part of the ecosystem. The fruit is free floating and known in Italy as "the olive of the sea" (''l'oliva di mare''). Balls of fibrous material from its foliage, known as ''egagropili'' or ''Neptune balls'', wash up to nearby shorelines. The Posidonia has a very high carbon absorption capacity, being able to soak up 15 times more carbon dioxide every year than a similar sized piece of the Amazon rainforest. Morphology Posidonia oceanica has roots (which mainly serve to anchor the plant to the substrate), rhizome and tapeform leaves. The rhizomes, up to 1 cm thick, grow both horizontally (plagiotropic rhizomes), and vertically (orthotropic rhizomes). The former, thanks to the presence at the bottom of lignited roots up to 15 cm long, anchor the plant to the substrate. The latte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spicara Smaris
''Spicara smaris'', one of the picarels, is a species of ray-finned fish native to the eastern Atlantic Ocean, the Mediterranean Sea and the Black Sea. It grows to a maximum length of about ; females are usually smaller than males. Description ''Spicara smaris'' grows to a maximum length of but a more common maximum size is . It is a more slender fish than the closely related blotched picarel ('' Spicara maena'') and can be distinguished from that species by having 75–81 scales along the lateral line rather than 68–70. Its back is grey-brown and it has silvery flanks with a large black spot located above the tip of the pectoral fin. Male fish are usually larger than females and have small blue spots scattered across the dorsal and anal fins. Distribution and habitat ''Spicara smaris'' is native to the subtropical eastern Atlantic Ocean including the coasts of Portugal, the Canary Islands and Morocco, the Mediterranean Sea and the Black Sea. It is usually found in seagrass me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateral Line
The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells, known as hair cells, which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Lateral lines serve an important role in schooling behavior, predation, and orientation. Fish can use their lateral line system to follow the vortices produced by fleeing prey. Lateral lines are usually visible as faint lines of pores running lengthwise down each side, from the vicinity of the gill covers to the base of the tail. In some species, the receptive organs of the lateral line have been modified to function as electroreceptors, which are organs used to detect electrical impulses, and as such, these systems remain closely linked. Most amphibian larvae and some fully aquatic adult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Sea
The Black Sea is a marginal mediterranean sea of the Atlantic Ocean lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bounded by Bulgaria, Georgia, Romania, Russia, Turkey, and Ukraine. The Black Sea is supplied by major rivers, principally the Danube, Dnieper, and Don. Consequently, while six countries have a coastline on the sea, its drainage basin includes parts of 24 countries in Europe. The Black Sea covers (not including the Sea of Azov), has a maximum depth of , and a volume of . Most of its coasts ascend rapidly. These rises are the Pontic Mountains to the south, bar the southwest-facing peninsulas, the Caucasus Mountains to the east, and the Crimean Mountains to the mid-north. In the west, the coast is generally small floodplains below foothills such as the Strandzha; Cape Emine, a dwindling of the east end of the Balkan Mountains; and the Dobruja Plateau considerably farth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animalia
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
