نتایج جستجو برای: barbus lacerta

تعداد نتایج: 911  

Journal: :Annals and Magazine of Natural History 1907

تحقیق حاضر در سال 1391 با هدف تعیین فلزات سنگین آهن، روی و مس در عضله هشت گونه ماهی بومی شامل شیربت (Barbus grypus)، بنی (Barbus sharpeyi)، گتان (Barbus xanthopterus)، برزم (Barbus  pectoralis)، حمری (Carasobarbus luteus)، بیاه (Liza abu)، انزه (Barbus esocinus) و شلج (Aspius vorax) انجام شد. 72 نمونه ماهی از تالاب هورالعظیم استان خوزستان تهیه شد. جهت استخراج فلزات از بافت­های مورد مطالعه، از ر...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1380

برخی گونه های جنس باربوس ماهیان ایران دارای مشکلاتی در علم آرایه شناسی و طبقه بندی هستند. بویژه 6 گونه از آنها به مدت حدوده سه دهه از نظر علم طبقه بندی از مشکل سازترین گونه ها بوده اند. در این تحقیق باربوس ماهیان ایران مورد بازنگری قرار گرفته است. 22 گونه نامی ‏‎(nominal)‎‏ از باربوس ماهیان شرح داده شده است. 21 گونه از ماهیان عبارتند از: ‏‎barbus barbulus, b.mystaceus, b,pectoralis, b.scheich, ...

Journal: :Mediterránea. Serie de Estudios Biológicos 1987

Journal: :Turkish journal of biodiversity 2023

In the present study, we contributed to knowledge of distribution endemic lizard species, Pamphylian green in Turkey and pointed out northernmost localities species. Until recently, occurrence species was only known from Antalya Mersin provinces Turkey. According most recent records, it has been reported some (Aşağı Kırıntı, Yukarı Kasımlar, Belence) Sütçüler district Isparta province. our also...

Journal: :Ecological Engineering 2021

Bar racks are commonly installed to divert fish away from water intakes, such as those at hydropower stations or other abstraction points. In temperate regions their effectiveness has predominantly been assessed in relation diadromous species, salmon and eel. This study compared the efficacy of horizontally vertically oriented (5 mm diameter 10 spacing) guide downstream moving groups five chub ...

2016
Willow R. Lindsay Erik Wapstra Bengt Silverin Mats Olsson

The mechanisms underlying honest signal expression remain elusive and may involve the integration of social and physiological costs. Corticosterone is a socially modulated metabolic hormone that mediates energy investment and behavior and may therefore function to deter dishonest signal expression. We examined the relationship between corticosterone and green badge coloration in male sand lizar...

Journal: :Global change biology 2017
Oriol Lapiedra Zachary Chejanovski Jason J Kolbe

Novel selective pressures derived from human activities challenge the persistence of animal populations worldwide. Behavior is expected to be a major factor driving animals' responses to global change because it largely determines how animals interact with the environment. However, the role of individual variation in behavior to facilitate the persistence of animals in changing environments rem...

Journal: :Evolution; international journal of organic evolution 2007
Liam J Revell Michele A Johnson James A Schulte Jason J Kolbe Jonathan B Losos

Phenotypic similarity of species occupying similar habitats has long been taken as strong evidence of adaptation, but this approach implicitly assumes that similarity is evolutionarily derived. However, even derived similarities may not represent convergent adaptation if the similarities did not evolve as a result of the same selection pressures; an alternative possibility is that the similar f...

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