Sodium Balance in the Acid Resistant East American Mudminnow, Umbra Pygmaea (de Kay)
نویسنده
چکیده
منابع مشابه
Prolactin cell activity and sodium balance in the acid-tolerant mudminnow Umbra pygmaea in acid and neutral water.
In East-American mudminnows, obtained from lakes and bogs of different water pH levels, prolactin cell size and ultrastructure reflect higher secretory activity in neutral water than in water of pH 3.5-6.5. This contrasts with observations on other species in which prolactin cell activity is higher at low water pH. Laboratory experiments involving acute exposure of mudminnows from pH 5.5 for 48...
متن کاملEffects of Acid Stress on the Distribution and Reproductive Success of Freshwater Fish in Dutch Soft Waters
The distribution and reproductive success of fish were examined in Dutch soft waters of varying pH. In total, 20 fish species were encoun tered. The lowest pH-values at which fish species were observed varied remarkably. Umbra pygmaea and Tinea tinea appeared to be extremely acid tolerant and occurred in waters with pH-values below 4.0. Abramis brarna, Cyprinus carpio, E’sox iucius, Misgumus f...
متن کاملPopulation Genetic Patterns of Threatened European Mudminnow (Umbra krameri Walbaum, 1792) in a Fragmented Landscape: Implications for Conservation Management
The European mudminnow (Umbra krameri) is a Middle Danubian endemic fish species, which is characterised by isolated populations living mainly in artificial habitats in the centre of its range, in the Carpathian Basin. For their long term preservation, reliable information is needed about the structure of stocks and the level of isolation. The recent distribution pattern, and the population gen...
متن کاملA study on Ca II 854.2 nm emission in a sunspot umbra using a thin cloud model
In the present work, we introduce and explain a method of solution of the radiative transfer equation based on a thin cloud model. The efficiency of this method to retrieve dynamical chromospheric parameters from Stokes I profiles of Ca II 854.2 nm line showing spectral emission is investigated. The analyzed data were recorded with the Crisp Imaging Spectro-Polarimeter (CRISP) at Swedish 1-m So...
متن کاملInvestigation of Paenibacillus larvae subspecies larva of honey bee (Apis mellifera) colonies in East Azerbaijan Province of Iran
Background: The American foulbrood disease (AFB), caused by Paenibacillus larvae subsp. larvae, is one of the main plagues affecting honey bee (Apis mellifera L.) colonies, and it has a high negative impact on beekeepers worldwide. OBJECTIVES: The aim of this research was to describe the evidence of Paenibacillus larvae larvae contamination of honey bee colonies, in the East Azerbaijan Province...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2017