نتایج جستجو برای: rutilus rutilus caspicus

تعداد نتایج: 1051  

ژورنال: :علوم و فنون دریایی 0

ماهی کلمه یکی از گونه های ارزشمند ماهیان استخوانی بوده که در نواحی جنوبی دریای خزر از نظر اقتصادی حائز اهمیت می باشد. بررسی ها نشان داده که تکثیر طبیعی این گونه طی سالهای اخیر کاهش یافته است. در حال حاضر بازسازی ذخایر ماهی کلمه از طریق تکثیر مصنوعی صورت می گیرد. در این راستا، کاهش ذخیره ژنی این گونه از نگرانی های اصلی در ادامه این مسیر می باشد. در تحقیق حاضر، جهت بررسی ساختار جمعیتی ماهی کلمه ت...

Journal: :Zootaxa 2014
Pier Giorgio Bianco Valerio Ketmaier

By combining morphology, ecology, biology, and biogeography with the available molecular (sequence variation of the entire mitochondrial cytochrome b gene; cyt-b) and karyology data, the taxonomy of several species of the Rutilus complex inhabiting southern Europe is revised. Rutilus stoumboudae, new species, is described from Lake Volvi, Greece. It differs from Rutilus rutilus in possessing mo...

2009
Leslie M. Smith Jarrod Blue Jessica Carlson Grace Metz Joshua Haywood Daniel Bush Christopher J. Paradise

The effects of predation on water-filled treehole communities in North Carolina were examined using mesocosm experiments and observations in natural treeholes. The presence of the predator Toxorhynchites rutilus and leaf litter abundance were manipulated in mesocosms to examine interactions between resources and predation. Long-term examination of interactions in unmanipulated treeholes provide...

Journal: :Journal of the American Mosquito Control Association 1999
J J Dennehy T Livdahl

The 1st recorded capture of Toxorhynchites rutilus in Massachusetts, USA, is reported. This capture represents the northernmost record of Tx. rutilus. The implications of this capture are discussed in the context of range expansion, evolution, and climatic change.

2011
Marcin Popiołek Tomasz Łuczyński Hubert Jarnecki

Aspidogaster limacoides Diesing, 1834 was identified in two specimens of roach (Rutilus rutilus L.) from middle Odra River (Lower Silesia, SW Poland). As the species is new to the Polish parasitofauna, a description, measurements and figure are presented.

ژورنال: توسعه آبزی پروری 2023

The present study was carried out to determine population structure of Rutilus rutilus caspicus, one of the endemic species in the two region (Gorganrood and Anzali), with six microsatellite loci (Lc03، Lc04، Lid1، Cyp6، Ca1 and Ca3). sixty specimens of Rutilus rutilus caspicus were collected from Gorganrood and Bandaranzali (30 specimens for each population). according to the results, the Fst ...

2011
Peng Wang Yu Liu Yonggang Yin Haojie Jin Shouxian Wang Feng Xu Shuang Zhao Xiaoli Geng

Artificially cultivating Chroogomphus rutilus is too inefficient to be commercially feasible. Furthermore, isolating C. rutilus mycelia in the wild is difficult. Thus, it is important to determine the natural habitat of its fruiting body. This study focused on the ecology of the C. rutilus habitat to isolate and classify beneficial microorganisms that could affect its growth, which could be use...

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