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Coelacanth merupakan ikan besar (antara 1- 2 meter panjangnya), dengan sirip-sirip yang membulat, dan sisik sisik yang khas ( cosmoid) yang relatif tipis, dan umumnya hanya ditemukan pada ikan-ikan purba yang telah punah}, Sirip bagian pinggang (pectoral fins) dan bagian bawah ( anal fin)-nya tumbuh pada tangkai yang berdaging yang ditunjang oleh tulang belulang. Sirip ekor (tail fin)-nya terbagi atas tiga lembar, dan bagian tengah sirip ekor tersebut merupakan lanjutan notokordia. Coelacanths juga memiliki organ panca indra sinyal elektrik, yang disebut organ roseteral pada bagian muka tengkoraknya. Organ ini tampaknya berguna untuk mendeteksi pakan dan mangsa mereka seperti cumi, sotong, dan hiu-hiu kecil. Coelacanth juga memiliki reproduksi tidak lazim pada kelas Ikan pada umumnya, yaitu melahirkan anak. Examples are found in Manado is then searched in nature and thanks to the help of a local fishermen later found alive in its natural habitat, that the waters of the island of Manado Tua, on the northern coast of North Sulawesi. Because of its large size, the community around Manado Tua knows this fish with a King's name seas. The fish is then given the scientific name Latimeria menadoensis. Based on DNA testing, it is indeed a different species in Sulawesi's population with that of Africa. Thus, to the two species Latimeria is a remnant of a group that in ancient times the Earth very diverse species, and almost entirely extinct in the late Cretaceous period, more than 60 million years ago. It seems that the species lived in the volcanic caves at a depth of 100 m below sea level. Other outstanding example was the discovery of the "lost world" of Foja Mountains 2005 in Papua, Mamberamo (Beehler 2006). In a place that might previously have never visited such scientific researchers found a number of new and rare species. included among these are a species of large mammals that have never been found in Indonesia (Kangaroo Dendrolagus pulcherimus type of tree); one bird species new to science (a type of "honeyeater"); the discovery site is multiplying rare birds, bird-berkawat-six Parotia berlepschi; more than twenty species of frogs; four butterfly species new to science: five species of Palm that is new to science; a number of the form turnbuhan which tarnpaknya unknown; an interest may be the world's largest Rhododendron, this discovery was made thanks to the extensive cooperation, including many researchers from Conservation International Joint Research Center for Biology-Lernbaga Science, University of Indonesia, Bird-Conservation
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