Rajko Roljić

ORCID: 0000-0003-2519-8300
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About
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Research Areas
  • Fish Biology and Ecology Studies
  • Crustacean biology and ecology
  • Fish biology, ecology, and behavior
  • Fish Ecology and Management Studies
  • Marine and environmental studies
  • Aquaculture Nutrition and Growth
  • Species Distribution and Climate Change
  • Collembola Taxonomy and Ecology Studies
  • Plant Ecology and Taxonomy Studies
  • Marine and fisheries research
  • Regional Development and Management Studies

University of Banja Luka
2020-2024

Animal Hospital Postojna
2022

Twenty-three morphometric characteristics of spiny-cheek crayfish Faxonus limosus from Danube, Serbia, were analyzed to describe the general body shape. Forty-eight specimens caught in May 2022 and January 2023 measured for variation. Also, values two condition indices, Fulton?s factor (FCF) constant (CC), determined. Most moderately variable (CV 10-30%). Principal component analysis (PCA) was applied morphological measurements. All variables make similar contributions variance first...

10.2298/abs231212005r article EN cc-by Archives of Biological Sciences 2024-01-01

Recent molecular analyses of the stone crayfish have revealed a high degree genetic diversity. The greatest diversity is found in western Balkans (Dinarides), where more than half known phylogroups exist relatively small geographical area, some them having smaller distribution range others. While Croatian and Slovenian parts Austropotamobius torrentium areal are well described, data from Bosnia Herzegovina (BA) lacking. Here we provide 13 different localities northwestern BA. We analysed two...

10.1051/kmae/2024023 article EN cc-by-nd Knowledge and Management of Aquatic Ecosystems 2025-01-01

Introduction: The analysis of healthy eating parameters in comparison with the anthropometric characteristics individuals type 2 diabetes mellitus can serve as a useful tool to prove that changes glucose metabolism are related dietary habits. This study investigates habits and (T2DM) Banja Luka, Bosnia, Herzegovina. primary aim was assess correlation between measurements, including body mass index (BMI), waist circumference (WC), waist-to-stature ratio (WSR), using UK Diabetes Diet...

10.17532/jhsci.2025.2735 article EN cc-by Journal of Health Sciences 2025-04-23

Danube crayfish, one of the native European crayfish species, is on decline in many parts its range. The Sava River and tributaries are under increased pressure from invasive spreading. Providing data resident species thus utmost importance for their better conservation protection. population Pontastacus leptodactylus (Eschscholtz, 1823) a small tributary River, Matura has been investigated May to August 2021. Our research encompassed sample 54 adult P. specimens (31 males 23 females)....

10.7251/asb240501037r article EN Acta scientifica Balcanica. 2024-04-16

This paper presents the information about morphological variability and sex dimorphism of Noble crayfish (Astacus astacus) in area Balkana Lake Mrkonjic Grad. The were caught by hand made baited traps from October 9nd 2018. until May 31th 2019. A total 58 caught, which 38 males 20 females. eight morphometric characteristics: body weight (W), length (TBL), claw (CLL), cephalothorax (CFL), carapace width (CPW), abdomen (ABL), rostrum (ROL) (ROW) measured, both Also, condition was determined...

10.5937/bnsr10-23098 article EN cc-by-sa Bulletin of Natural Sciences Research 2020-01-01

Austropotamobius torrentium (Schrank, 1803) lives in two watercourses, namely Subotica (Sana) and Toplik (Tilava). The influence of the ecological conditions these rivers on individuals this species is analyzed based 22 morphometric parameters. assessment abiotic was done through measurement physical chemical water parameters analysis composition phytobenthos macrozoobenthos. Sampling carried out June, September, October 2021. Water quality at investigated localities (on basis biotic...

10.7251/agren2204237b article EN Агрознање 2022-12-15

This paper presents the information about morphological variability and sexual dimorphism of stone crayfish (Austropotamobius torrentium) in area Korana River Mrkonjic Grad. The were caught by hand made baited traps from October 2018 to May 2019. A total 46 caught, which 33 males 13 females. dimensions eight morphometric characteristics: body weight (W), length (TBL), rostrum (ROL), width (ROW), claw (CLL), carapace (CPL), (CPW) abdomen (ABL), analyzed, both Also, condition was determined...

10.7251/qol2001011r article EN Quality of Life (Banja Luka) - APEIRON 2020-03-16

This paper presents the first information about morphological variability and sexual dimorphism of stone crayfish Austropotamobius torrentium in area Marjanovića Stream Čelinac (Republic Srpska, Bosnia Herzegovina). The were caught by hand-made made baited traps from October 2018 to May 2019. A total 67 specimens caught, out which 33 males 34 females. eight morphometric characteristics - body weight (W), length (TBL), claw (CLL), carapace (CPW), width abdomen (ABL), rostrum (ROL) (ROW)...

10.5937/kgjsci2042143r article EN cc-by Kragujevac Journal of Science 2020-01-01

The existence of three autochthonous crayfish species is confirmed in the northwest Republic Srpska: Astacus astacus, Pontastacus leptodactylus and Austropotamobius torrentium. There a lack information on European population status Srpska comparing to other countries. Our aim generate latest distribution status, make it basis for managing preserving natural population. present study was implemented period from April 2018 until September 2019. Mostly distributed A. torrentium registered 12...

10.7251/qol2003077r article EN Quality of Life (Banja Luka) - APEIRON 2020-10-10

Regarded as a protected species on the IUCN list of endangered species, and classified data deficient stone crayfish (Austropotamobius torrentium) is one five European from Astacidae family that lives in freshwater ecosystems across Bosnia Herzegovina. The aim this study was to investigate variability selected morphometric characteristics male female A. torrentium upper reaches Mlinska River. were sampled June 2021 when 62 individuals (22 males 40 females) caught. They analyzed fresh field...

10.7251/agren2201033r article EN cc-by Агрознање 2022-06-15

This paper presents the information about morphological variability and sex dimorphism of Noble crayfish (Astacus astacus) in area Balkana Lake Mrkonjic Grad. The were caught by hand made baited traps from October 9nd 2018. until May 31th 2019. A total 58 caught, which 38 males 20 females. eight morphometric characteristics: body weight (W), length (TBL), claw (CLL), cephalothorax (CFL), carapace width (CPW), abdomen (ABL), rostrum (ROL) (ROW) measured, both Also, condition was determined...

10.5937/univtho10-23098 article EN cc-by-sa University thought - Publication in Natural Sciences 2020-08-23

Abstract Brown trout is a common type of fish grown for consumption in open and flowing ponds on the rivers Bosnia Herzegovina. We conducted this study during three seasons (spring, summer autumn) to obtain complete picture morphological histological characteristics selected tissues. The physicochemical water from Pliva River near Pljeva pond where intensive breeding carried out were analyzed. These analyses have shown that there are no major deviations quality excellent quality. A total 90...

10.2478/cjf-2022-0016 article EN cc-by-nc-nd Croatian Journal of Fisheries 2022-12-01

Apstrakt: U ovom radu dati su podaci o morfometrijskim karakteristikama riječnog raka (Astacus astacus) iz rijeke Vijake u Prnjavoru. Rakovi uzorkovani junu 2022. godine kada je ulovljeno 67 jedinke (44 mužjaka i 23 ženke). Dvadeset tri morfometrijske karakteristike: totalna dužina tijela (TBL), težina (W), kliješta (CLL), dlana (CPL), prsta (CFL), širina (CLW), debljina (CLH), karapaksa rostruma (ROL), (ROW), glave (HEL, HEW), na vrhu (CGW), (CPW), (CPH), prsa (ARL), brazde (ARW), zadnjem...

10.55258/2232-7665.2022.14.341 article HR cc-by-nc Baština sjeveroistočne Bosne 2022-11-21
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