Abstract Question We connected tree‐census and dendrochronological research data (74.2 ha) in order to answer the following questions: How do we apply an individual‐based approach, which allows us abandon traditional patch model, of disturbance history through spatial scales? What is natural forest? understand influence K yrill storm, affected reserve on 18 J anuary 2007? does records correspond real disturbances? Location Žofínský Prales (48 °40′ N, 14 °42′ E, 735–830 m a.s.l., granite,...

Clove oil (active substance eugenol) is an anaesthetic used in aquaculture for stress prevention and of mechanical damage during veterinary procedures. The aim this study was to determine the acute toxicity clove two aquarium fish species - zebrafish ( Danio rerio ) guppy Poecilia reticulata ), which are considered most commonly model organisms testing. semi-static method according OECD no. 203 (Fish, Acute test) testing juvenile fish. A series 5 tests performed, with 10 both each...

The aim of this study was to investigate the effects subchronic exposure atrazine on fish growth and development histopathological changes in selected organs (gill, kidney, liver) Danio rerio.Juvenile tests were performed D. rerio according OECD method No. 215.For 28 days, at an initial age 30 days exposed environmental concentration commonly detected Czech rivers (0.3 μg/L) a range sublethal concentrations (3.0, 30.0 90.0 μg/L).The results showed decreasing rates morphological liver...

Nitrite is a natural component of the nitrogen cycle in environment. Although it usually occurs low concentrations, elevated concentrations caused by effluents or affected nitrification process can lead to serious health deterioration fish. Two aquarium fish zebrafish ( Danio rerio) and guppy Poecilia reticulata) are recommended use as model organisms toxicity tests. However, their sensitivity nitrite differ. The aim this study was define acute semistatic method according OECD No. 203 (Fish,...

The aim of this study was to assess the impact terbuthylazine in surface waters on fish under experimental conditions. Subchronic toxic effects embryos and larvae common carp (Cyprinus carpio) were investigated during a 30-day toxicity test. exposure terbuthylazin showed no effect mortality, but significant differences (P < 0.0001) revealed weight growth parameters at concentrations 520 820 μg/L. inhibition specific rate μg/L 14% compared control group. No negative total body length observed...

Abstract The least developed countries (LDCs) have been declared a battleground where the success or failure of Sustainable Development Goals (SDGs) will be decided. Being main instrument support LDCs and one means implementation SDGs, international trade plays crucial role in this case. Following importance for sustainable development LDCs, study evaluates selected increasing their participation since beginning new millennium. progress they individually made is explored using 10 criteria,...

Dimethyl sulphoxide (DMSO) is an important polar aprotic solvent, less toxic than other members of this class. Because its excellent solvating power, DMSO frequently used as solvent for chemical reactions involving salts, especially Finkelstein and nucleophilic substitutions. Furthermore, auxiliary substance in toxicity tests on aquatic organisms, usually at concentrations 0.2 0.5 ml l -1 . The aim the present study was to evaluate effect early development, growth mortality life stages...

Many invasive procedures, including surgery (ear cropping, tail docking, and debarking in the dog), are performed on dogs for purely cosmetic reasons or convenience. These also known as “cosmetic surgery”, fall into a variety of categories from questionably unethical to undoubtedly criminal, because they mostly carried out solely alter dog’s physical appearance. Although several European countries these procedures banned, except when by veterinarian medical reasons, veterinarians often...

The aim of the present study was to determine and compare acute toxicity terbutryn in Danio rerio Poecilia reticulata, two different developmental stages D. – embryonic juvenile. Acute tests were performed according OECD methodology. LC50 values assessed by probit analysis using EKO-TOX 5.2 programme. 96hLC50 mean value 5 2.85 ± 0.75 mg·l -1 for juvenile stage P. reticulata 5.71 0.46 . For 144hLC50 6 estimated as 8.04 1.05 proved significantly higher ( p &lt; 0.01) sensitivity compared...

The findings of traumatic injuries during post-mortem inspection in slaughterhouses reflect the level pre-slaughter handling animals at farm and transport to slaughterhouse. prevalence was monitored poultry (1,089,406,687 broiler chickens, 20,030,744 laying hens, 1,181,598 turkeys, 37,690 geese, 28,579,765 ducks) rabbits (1,876,929) originating from farms Czech Republic slaughtered between 2010 2019. greatest incidence found hens (2.80%) (1.52%); while overall trauma less than 0.5% other...

Comparison of the sensitivity Danio rerio and Poecilia reticulata to silver nitrate in short-term tests The aim this study is assess acute toxicity adult zebra fish guppies compare these species compound. Silver a naturally occurring element our environment it combines with other elements such as sulfide, chloride, nitrate. Silver, form nitrate, one most toxic metals affecting freshwater fish. Industry, particularly photographical electrotechnical, major contributor that released into...

The preparation PAX-18 is a coagulation agent, which used in water and wastewater treatment facilities for the of natural waters. active compound polyaluminium chloride (9% Al). application to environment could present potential risk different developmental stages fish. aim this study was assess compare toxicity embryonic juvenile zebrafish ( Danio rerio ). acute tests with fish aged 2–3 months were conducted according method OECD No. 203 5 series. For embryo test 212 semistatic methods...

Soy is considered an allergen under Regulation No. 1169/2011 of the European Parliament and Council, which mandates labelling soy on food packaging. This study focused detecting in products using two kinds methods. The first method, enzyme-linked immunosorbent assay (ELISA), was performed commercial kits (Veratox for Allergen; Neogen, USA). second polymerase chain reaction (PCR), carried out with different deoxyribonucleic acid (DNA)-isolating DNA isolation via cetyltrimethylammonium bromide...