نتایج جستجو برای: caspian frisian roach

تعداد نتایج: 4569  

2017
Evelyn Bosma Wilbert Heeringa Eric Hoekstra Arjen Versloot Elma Blom

Closely related languages share cross-linguistic phonological regularities, such as Frisian -âld [ͻ:t] and Dutch -oud [ʱut], as in the cognate pairs kâld [kͻ:t] - koud [kʱut] 'cold' and wâld [wͻ:t] - woud [wʱut] 'forest'. Within Bybee's (1995, 2001, 2008, 2010) network model, these regularities are, just like grammatical rules within a language, generalizations that emerge from schemas of phono...

2003
J. C. SVENDSEN J. SKOV M. BILDSOE J. F. STEFFENSEN

Using three different swimming velocities and a school size of eight roach Rutilus rutilus, individual intra-school position and tail beat frequency were examined in a flume tank. Tail beat frequency was determined in defined leading and trailing positions. Individual roach showed consistent intra-school positional preferences which implied a sustained positional pattern where certain individua...

2013
Dolf Trieschnigg Dong Nguyen Theo Meder

In this work we report on a transaction log analysis of the Dutch Folktale Database, an online repository of extensively annotated folktales ranging from old fairy tales to recent urban legends, written in (old) Dutch, Frisian and a variety of Dutch dialects. We observed that users have a preference for subgenres within folktales such as traditional legends and urban legends and prefer stories ...

2016
Ekaterina V. Ponomareva Dmitri D. Pervouchine Alexey A. Sergeev

Russian ( ), Persian ( ) and Siberian ( Acipenser gueldenstaedtii A. persicus A. ) sturgeons are closely related ‘Ponto-Caspian’ species. Investigation of baerii their population structure is an important problem, the solution of which determines measures for conservation of these species. According to previous studies, ‘baerii-like’ mitochondrial genotypes were found in the Caspian Sea among 3...

2018
Levan Ninua David Tarkhnishvili Elguja Gvazava

Current taxonomy of western Eurasian trout leaves a number of questions open; it is not clear to what extent some species are distinct genetically and morphologically. The purpose of this paper was to explore phylogeography and species boundaries in freshwater and anadromous trout from the drainages of the Black and the Caspian Seas (Ponto-Caspian). We studied morphology and mitochondrial phylo...

2016
Hossein Alipour Alireza Pourkhabbaz Mehdi Hassanpour

The objective of this study was to determine the concentrations As, Cu, Fe, and Zn in the livers, gills, and muscles of vobla or Caspian roach, Rutilus caspicus (Yakovlev), and bighead goby, Neogobius gorlap (Iljin), from the Miankaleh wetland. The results showed that metal accumulation in the liver tissues was higher than in the gills and muscles for all metals, and Fe concentration was higher...

2010
Tahira Abbasova

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2012
GholamReza Roshan Masumeh Moghbel Stefan Grab

The rapid rise of Caspian Sea water level (about 2.25 meters since 1978) has caused much concern to all five surrounding countries, primarily because flooding has destroyed or damaged buildings and other engineering structures, roads, beaches and farm lands in the coastal zone. Given that climate, and more specifically climate change, is a primary factor influencing oscillations in Caspian Sea ...

2016
Alexey Sergeev

Russian ( Acipenser gueldenstaedtii), Persian ( A. persicus) and Siberian ( A. baerii) sturgeons are closely related 'Ponto-Caspian' species. Investigation of their population structure is an important problem, the solution of which determines measures for conservation of these species. According to previous studies, 'baerii-like' mitotypes were found in the Caspian Sea among 35% of Russian stu...

Journal: :Environmental science & technology 2009
Wei An Jianying Hu John P Giesy Min Yang

A model that assesses risks posed by feminization to wild populations of roach was developed. A population life table matrix model that considered both sexes and a newly developed fertility kinetic function was applied to calculate the intrinsic population growth rate (lambda) of roach populations where males had been feminized. The maximum sustainable yield (MSY) was used to quantify the effec...

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