tailieunhanh - What is the relationship within the family lamnidae

Uncertainties remain about the relationship within the family Lamnidae, which includes the white shark, 2 makos, the porbeagle, and salmon shark. Several alternative hypotheses have been suggested related to the Lamnidae phylogeny. | Turk J Biol 31 (2007) 109-113 © TÜB‹TAK What is the Relationship within the Family Lamnidae? Mine DOSAY AKBULUT Department of Medical Biology and Genetics, Faculty of Veterinary Medicine, Afyonkarahisar Kocatepe University, Afyonkarahisar - TURKEY Received: Abstract: Uncertainties remain about the relationship within the family Lamnidae, which includes the white shark, 2 makos, the porbeagle, and salmon shark. Several alternative hypotheses have been suggested related to the Lamnidae phylogeny. The aim of this study was to find an accurate answer to the family Lamnidae interrelationship. To that extend, the mitochondrial cytochrome b gene was studied in all the Lamnidae species and 2 outgroups from the families Alopiidae and Odontaspididae. The monophyly of 2 makos were obtained from both DNA and amino acid (AA) parsimony analysis. Based on our analysis, first the white shark joins this group, which is a sister taxon to the genus Isurus (makos), as reported by Naylor. In the AA parsimony analysis, the 2 makos and porbeagle-white shark branches come together as the monophyletic family Isurus, but not Lamna. These results agree with Compagno’s suggestion and Martin’s findings. Key Words: Lamnidae, phylegenetic, relationship Lamnidae Familyasi ‹çindeki ‹liflki Özet: Beyaz köpek bal›¤›, 2 mako, porbeagle ve Salmon türü köpek bal›klar›n› kapsayan Lamnidae familyas› içerisindeki iliflki çok net de¤ildir. Bu familyan›n kendi içerisindeki s›n›fland›rmas›na yönelik pekçok farkl› hipotezler üretilmifltir. Bu çal›flma, Lamnidae familyas› içindeki iliflkilere yönelik yeterli bir cevap bulabilmek amac› ile tüm Lamnidae türlerini ve Alopidae ve Odontaspididae ailesinden 2 harici örnek kullan›larak mitokondrial cyt b geni ile yap›lm›flt›r. Hem DNA hemde AA prsimony analizlerinde 2 mako türü monofiletik grub olarak elde edilmifltir. Bu gruba Naylor’›n sonucuna uygun olarak, 1analizde makolar›n ba¤l› oldu¤u Isurus cinsinin kardefl cinsi olan beyaz köpek bal›¤› .

• Sinh học
• Lamniformes mackerel sharks
• Salmon shark
• Lamnidae phylogeny
• Alternative hypotheses
• Amino acid
• Genus Isurus