The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The study, carried out during the spawning season, involved 30 mature carp females aged 5 years. The fish were divided into two experimental groups, those belonging to one of them being injected pimozide, a dopamine antagonist. The pituitaries and pineals were removed from all the females and perifused. Perifusion was carried out in pure medium alone, in the medium in the presence of the pineal gland,...
The paper describes and compares various (chemical and biological) methods used in Poland for lotic water quality assessment; included are methods which have not been formally approved yet. Based on ecological surveys made in 1996-1998, a quality assessment of water of rivers Tywa and Rurzyca is presented. The assessment allows to conclude that application of a single method leads to a serious misrepresentation...
Two experiments on newly hatched, 1-d-old, immobile and non-feeding larvae of carp (Cyprinus carpio Linne) and crucian carp (Carassius carassius (Linne)) were performed. Each experiment involved 3 treatments: WA (larvae + Acanthocyclops robustus); WAD (larvae + A.robustus + additional food for the cyclopoids consisting of Daphnia magna, rotifers, and ciliates); and W (larvae only; control). The carp...
The study involved analysis, performed with standard methods, of length and weight growth of 202 perch individuals caught in November 1999 from the Szczecin Lagoon. The verge coefficient was factored in both when determining the age distribution and when analysing length and weight growth by calculating mean values in age groups (when Kr > 0.50, the number of annual rings was increased by 1).
The feeding experiment described was run within July 19 October 18, 1999 on 536 g (ą20 g) mean individual weight carp individuals aged 1+. The fish were kept in cages stocked at a 50 ind. cage1 density. Experimental treatments differed in the feed offered. The following feeds were used: Danex 1848 (Dan), Carp Growex (Grow), and AT 35 Starter (AT 35). The daily feed doses, amounting to 2.0% metabolic...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.