Coelacanth
| Coelacanth | |
|---|---|
 | |
| Scientific classification | |
| Kingdom | Animalia |
| Subkingdom | Bilateria (mul)  |
| Phylum | Chordata (mul)
|
order (en)  | Coelacanthiformes L.S.Berg, 1937
|
| Geographic distribution | |
 | |
Coelacanths / / ˈs iːləkæn θ / ⓘ SEE -lə-kanth ) tsohuwar ƙungiyar kifaye ne da aka yi da lobe finned (Sarcopterygii) a cikin ajin Actinistia . [1] A matsayinsu na sarcopterygians, suna da alaƙa ta kud da kud da lungfish da tetrapods (ƙananan halittu na ƙasa ciki har da masu rai amphibians, masu rarrafe, tsuntsaye da dabbobi masu shayarwa ) fiye da kifayen da aka yi da ray finned . Akwai nau'in halittu guda ɗaya kawai, Latimeria, tare da nau'ikan halittu guda biyu da aka bayyana.
Sunan coelacanth ya samo asali ne daga halittar Permian Coelacanthus, wacce ita ce nau'in coelacanths na farko da aka sanya wa suna a kimiyya (a shekara ta 1839), ta zama nau'in halittar Coelacanthiformes kamar yadda aka gano aka kuma sanya wa wasu nau'ikan suna. [2] [3] An wakilta shi sosai a cikin ma'adinan ruwa da ruwa tun farkon zamanin Devonian (fiye da 410) shekaru miliyan da suka wuce ), ana tsammanin sun ɓace a ƙarshen Cretaceous, kimanin shekaru 66. shekaru miliyan da suka wuce .
An bayyana nau'in halittar farko mai rai, Latimeria chalumnae, coelacanth na Tekun Indiya ta Yamma, daga samfuran da aka kamo a bakin tekun Afirka ta Kudu tun daga 1938 zuwa gaba; [4] yanzu an san su da zama a cikin tekuna da ke kewaye da Tsibirin Comoro a gabashin gabar Afirka . Nau'in na biyu, Latimeria menadoensis, coelacanth na Indonesia, an gano shi a ƙarshen shekarun 1990, wanda ke zaune a cikin tekuna na Gabashin Indonesia, daga Manado zuwa Papua . [5]
Asalin Ma'anar
[gyara sashe | gyara masomin]Kalmar Coelacanth an yi ta ne da sunan Latin Cœlacanthus na zamani. ('m kashin baya'), daga tsohuwar Girkanci κοῖλ-ος ( koilos, 'm') da ἄκανθ-α ( akantha, 'kashin baya'), [6] yana nufin haskoki na kashin caudal mai zurfi na samfurin burbushin farko da Louis Agassiz ya bayyana kuma ya sanya masa suna a shekarar 1839, mallakar nau'in Coelacanthus . :1Sunan asalin Latimeria yana tunawa da Marjorie Courtenay-Latimer, wacce ta gano samfurin farko. [7]
Manazarta
[gyara sashe | gyara masomin]- ↑ "Order Summary for Coelacanthiformes". fishbase.se. Retrieved 2023-03-13.
- ↑ Empty citation (help)
- ↑ Osterloff, Emily. "Coelacanths: the fish that 'outdid' the Loch Ness Monster". Natural History Museum, London. Retrieved 12 May 2025.
- ↑ Lavett Smith, C.; Rand, Charles S.; Schaeffer, Bobb; Atz, James W. (1975). "Latimeria, the Living Coelacanth, is Ovoviviparous". Science. 190 (4219): 1105–6. Bibcode:1975Sci...190.1105L. doi:10.1126/science.190.4219.1105. S2CID 83943031.
- ↑ Yokoyama, Shozo; Zhang, Huan; Radlwimmer, F. Bernhard; Blow, Nathan S. (1999). "Adaptive evolution of color vision of the Comoran coelacanth (Latimeria chalumnae)". Proceedings of the National Academy of Sciences. 96 (11): 6279–84. Bibcode:1999PNAS...96.6279Y. doi:10.1073/pnas.96.11.6279. PMC 26872. PMID 10339578.
- ↑ "The Coelancanth". actforlibraries.org. Retrieved 2015-10-30.
- ↑ "Smithsonian Institution – The Coelacanth: More Living than Fossil". vertebrates.si.edu. Retrieved 2015-10-30.