Contemporary phenotypic change in correlated characters in the African cyprinid, Rastrineobola argentea
نویسندگان
چکیده
منابع مشابه
Life history change in response to fishing and an introduced predator in the East African cyprinid Rastrineobola argentea
Fishing and introduced species are among the most important stressors affecting freshwaters and can also be strong selective agents. We examined the combined effects of commercial fishing and an introduced predator (Nile perch, Lates niloticus) on life history traits in an African cyprinid fish (Rastrineobola argentea) native to the Lake Victoria basin in East Africa. To understand whether thes...
متن کامل09-P083 Oogenesis in the silver cyprinid Rastrineobola argentea (Pelligrin, 1904) (Teleostei; cyprinidae): Ovarian anatomy, stages of oocyte development
Oogenesis begins when the stem cell (oogonium) transforms into leptotene oocytes at the initiation of meiosis. The cell now called an oocyte produces the cellular material needed to complete the pre-vitellogenic phase of development. These may include gene amplification and organelle production. In addition, this leads to the accumulation of nutrients, messenger RNAs (mRNA), precursors of DNA a...
متن کاملLittle evidence for morphological change in a resilient endemic species following the introduction of a novel predator.
Human activities, such as species introductions, are dramatically and rapidly altering natural ecological processes and often result in novel selection regimes. To date, we still have a limited understanding of the extent to which such anthropogenic selection may be driving contemporary phenotypic change in natural populations. Here, we test whether the introduction of the piscivorous Nile perc...
متن کاملMicrobiological quality and safety of Rastrineobola argentea retailed in Kisumu town markets, Kenya.
OBJECTIVE To investigate faecal contamination and safety of Rastrineobola argentea sold in retail markets in Kisumu town. DESIGN This was a repeated cross sectional study and based on random sampling. SETTING Kisumu city, targeting six markets; Oile, Jubilee, Kibuye, Kondele, Nyalenda and Manyatta. RESULTS A total of 60 fish samples were analysed. All the fish were found to be contaminate...
متن کاملComparison of Different Techniques for Processing and Preserving fish Rastrineobola argentea from Lake Victoria, Kenya
This study was set to determine the antimicrobial activities of brine salting, chlorinated solution, and oil frying treatments on enteric bacteria and fungi in Rastrineobola argentea fish from fish landing beaches within L. Victoria basin of western Kenya. Statistical differences in effectiveness of the different treatment methods was determined by single factor ANOVA, and paired two-tail t-Tes...
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: Biological Journal of the Linnean Society
سال: 2018
ISSN: 0024-4066,1095-8312
DOI: 10.1093/biolinnean/bly027