نتایج جستجو برای: garra rossica
تعداد نتایج: 388 فیلتر نتایج به سال:
The study of populations subject to the phenomenon of loss and fragmentation of habitat, transforming continuous areas into small ones, usually surrounded by anthropogenic matrices, has been the focus of many researches within the scope of conservation. The objective of this study was to develop a computer model by introducing modifications to the renowned Penna Model for biological aging, in o...
Caudal neurosecretory system is an additional neuroendocrine system found in fishes. Great variation has been observed among different groups of fishes, so far its organization is concerned. Much work has been undertaken on the caudal neurosecretory system of elasmobranchs and teleosts. large size scattered Dahlgren cells in the posterior end of spinal cord, corresponding to last few vertebrae,...
Mujib and Haidan rivers were sampled in July 2011 to identify fish populations in the riverine system, and to investigate the impact caused by the existence of two dams. Fishes were sampled by electofishing gear through 14 sampling points distributed along the two rivers. The Mujib Dam lake was sampled by gillnets. A total of 2,854 fish specimen were caught during the study of which most consis...
In breeding programs, commercial hybrids are frequently used as a source of inbred lines to obtain new hybrids. Considering that maize production is dependent on viable gametes, the selection of populations to obtain inbred lines with high meiotic stability could contribute to the formation of new silage corn hybrids adapted to specific region. We evaluated the meiotic stability of five commerc...
Randommotions on the line andon the planewith space-varyingvelocities are considered and analyzed in this paper. On the line we investigate symmetric and asymmetric telegraph processes with space-dependent velocities and we are able to present the explicit distribution of the position T (t), t > 0, of the moving particle. Also the case of a nonhomogeneous Poisson process (with rate λ = λ(t)) go...
We present the first evidence for B semileptonic decays into the charmed baryon Λc based on 420 fb−1 of data collected at the Υ (4S) resonance with the BABAR detector at the PEP-II e+e− storage rings. Events are tagged by fully reconstructing one of the B mesons in a hadronic decay mode. We measure the relative branching fraction B(B → Λc Xlνl)/B(B → Λc /Λ − c X) = (3.2 ± 0.9stat. ± 0.9syst.)%....
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