The rearing of fish fry in illuminated cages is one of the methods used before fish release into water bodies. The aim of the study was to investigate the peculiarities of infestation with Argulus foliaceus L. of the fry of pike Esox lucius (L.), pike-perch Sander lucioperca (L.), bream Abramis brama (L.), vimba Vimba vimba (L.) and peled Coregonus peled (Gmel.) reared in illuminated cages. The...

LJUBOJEVIC, D., D. TRBOVIC, J. LUJIC, O. BJELIC-CABRILO, D. KOSTIC, N. NOVAKOV and M. CIRKOVIC, 2013. Fatty Acid Composition of Fishes from Inland Waters. Bulg. J. Agric. Sci., Supplement 1: 62–71 The paper presents a comparative analysis of proximate and fatty acid composition of seven fi sh species from the Danube River including asp (Aspius aspius), common bream (Abramis brama), common barbe...

The aging of the population will increase demand for psychological services for older adults, which challenges the profession of psychology to provide those services. In response to that challenge, professional geropsychology has been developing over the past few decades to meet current and prepare for anticipated future demand. The development of a range of training opportunities is important ...

Abstract Structural complexity is known to influence prey behaviour, mortality and population structure, but the effects on predators have received less attention. We tested whether contrasting structural in two newly colonised lakes (low lake—LSC; high complexity—HSC) was associated with behaviour an aquatic apex predator, Northern pike ( Esox lucius ; hereafter pike) present lakes. Behaviour ...

the objective of the research was to test the effect of iron and aluminium coagulants commonly used for lake re-cultivation, on the pike sperm motility and fertilisation. the coagulants caused changes in the analyzed hydrochemical parameters of the water such as: fe, mg2+, tss, so42- and cl-. selected parameters of sperm motility: mot, vcl, vsl, vap, lin were estimated using casa. the sperm mot...

BACKGROUND AND PURPOSE Performing nontraditional abdominal exercises with devices such as abdominal straps, the Power Wheel, and the Ab Revolutionizer has been suggested as a way to activate abdominal and extraneous (nonabdominal) musculature as effectively as more traditional abdominal exercises, such as the crunch and bent-knee sit-up. The purpose of this study was to test the effectiveness o...

The pineal organ (or pineal) of a teleost fish, the pike, contains typical (cone-like) and modified photoreceptor cells. Both are involved in indole metabolism, including melatonin production. How photoperiod controls melatonin biosynthesis in organs containing mainly photoreceptor cells, remains unclarified. To tackle this question we have used cultured pike pineal organs to investigate the va...

Survival rates of early life stages (eggs/hatchlings) in marine turtle populations critically influence adult recruitment rate and thus population persistence (Mazaris et al. 2005, 2006). Therefore, for conservation and management purposes, it is particularly important to understand how marine turtle hatching success (percentage of eggs that produce hatchlings) may be affected by human disturba...