Genetic Basis of Adaptive Shape Differences in the Cichlid Head
نویسندگان
چکیده
منابع مشابه
Genetic basis of adaptive shape differences in the cichlid head.
East African cichlids exhibit an extraordinary level of morphological diversity. Key to their success has been a dramatic radiation in trophic biology, which has occurred rapidly and repeatedly in different lakes. In this report we take the first step in understanding the genetic basis of differences in cichlid oral jaw design. We estimate the effective number of genetic factors that control di...
متن کاملphylogeography and genetic diversity of the lesser mouse- eared bat (myotis blythii) in iran
in current study, 63 samples of bat populations collected from differ regions were used for evaluating the geographic variations. twenty cranial and dental characters for traditional morphometric and landmarks method on the ventral, dorsal skull and mandible for geometry morphometric studies were used. statistical analyses of traditional morphometric and geometry morphometric data indicated low...
The genetic basis of biodiversity: genomic studies of cichlid fishes
Genomic techniques allow new approaches to long-standing questions in evolutionary biology. In particular, the development of linkage maps will accelerate the identification of genes underlying adaptive traits. We discuss the application of these technologies to understanding the radiation of cichlid fishes in Lake Malawi, East Africa. We have developed a linkage map for Oreochromis niloticus a...
متن کاملTuning Shape Parameter of Radial Basis Functions in Zooming Images using Genetic Algorithm
Image zooming is one of the current issues of image processing where maintaining the quality and structure of the zoomed image is important. To zoom an image, it is necessary that the extra pixels be placed in the data of the image. Adding the data to the image must be consistent with the texture in the image and not to create artificial blocks. In this study, the required pixels are estimated ...
متن کاملGenetic basis of differential opsin gene expression in cichlid fishes.
Visual sensitivity can be tuned by differential expression of opsin genes. Among African cichlid fishes, seven cone opsin genes are expressed in different combinations to produce diverse visual sensitivities. To determine the genetic architecture controlling these adaptive differences, we analysed genetic crosses between species expressing different complements of opsin genes. Quantitative gene...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Heredity
سال: 2003
ISSN: 1471-8505
DOI: 10.1093/jhered/esg071