tailieunhanh - Báo cáo sinh học: "he water flea Daphnia - a ‘new’ model system for ecology and evolution"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: The water flea Daphnia - a ‘new’ model system for ecology and evolution? | Stollewerk Journal of Biology 2010 9 21 http content 9 2 21 Journal of Biology MINIREVIEW L__ The water flea Daphnia - a new model system for ecology and evolution Angelika Stollewerk See research articles http 1471-2148 9 78 http 1471-2164 10 527 http 1471-2148 9 79 http 1471-2164 10 175 http 1471 -2164 10 172 http 1471 -2164 10 169 http 1471-2164 10 170 and http 1471-2148 9 243 Abstract Daphniapulex is the first crustacean to have its genome sequenced. Availability of the genome sequence will have implications for research in aquatic ecology and evolution in particular as addressed by a series of papers published recently in BMC Evolutionary Biology and BMC Genomics. One of the major questions in evolutionary biology is to understand how species have adapted to different environments and how the underlying changes in morphology physiology and behavior relate to modifications in the corresponding genes. The publication of the first crustacean genome sequence that of Daphnia pulex 1 2 is part of an effort by the members of the Daphnia Genome Consortium to establish Daphnia as a model system for evolutionary environmental genomics. But can Daphnia rise to the challenge The vast number of publications on Daphnia in the literature prove that this animal is no newcomer to scientific research. Daphnia is most probably one of the best-studied subjects in ecology 3 . Populations can be found in freshwater environments ranging from huge lakes to small temporary pools and seasonally flooded depressions. The ecology of Daphnia has been studied from the point of view of its role as a primary consumer in aquatic food chains its phenotypic plasticity and its behavior toxicology and the evolution of sexual and asexual reproduction. Extensive studies on the population genetics of Daphnia