Author : Nathaniel Bruns
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (853 download)
Book Synopsis The Morphological and Genetic Similarity Among Three Species of Halibut (Paralichthys Spp.) in Baja California, Mexico by : Nathaniel Bruns
Download or read book The Morphological and Genetic Similarity Among Three Species of Halibut (Paralichthys Spp.) in Baja California, Mexico written by Nathaniel Bruns and published by . This book was released on 2012 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three nominal species of halibut (Paralichthys californicus, P. woolmani, and P. aestuarius) that occur off Baja California are difficult to distinguish from each other. Whether these are distinctly separate species has come into question in recent years, and the best way to answer this question is through a combination of genetic and morphological techniques. Halibut were collected from locations spanning California and Baja California, including the Gulf of California. Extensive measurements of field specimens as well as museum specimens were taken and analyzed. A portion of the nuclear RAG-2 gene was sequenced for each fish and analyzed. The results of this analysis indicated that P. aestuarius does not deserve separate species status as it is essentially identical to P. californicus, while P. woolmani is a distinct species that appears to be more closely related to the Paralichthys species in the Gulf of Mexico and the southern Atlantic Ocean.