Shift of the western boundary of the distribution area of Micromeria cristata (Hampe) Griseb. and Steptorhamphus tuberosus (Jacq.) Grossh During field investigations of Mt Rumija, two new taxa for the flora of Montenegro were recorded: Micromeria cristata (Hampe) Griseb. and Steptorhamphus tuberosus (Jacq.) Grossh. From the phytogeographic point of view these data indicate a change in the distribution area of both taxa, which have shifted to the west. Ashort over-view of the taxonomic treatment of both genera is given.
Lake Prespa, Lake Ohrid and Lake Skadar are the biggest lakes in the Balkan Peninsula. By reason of continuous existence and relatively stable ecological conditions millions years those lakes have a unique collection of flora and fauna.In this paper is presented biodiversity of macrophyte vegetation from Lake Prespa, Lake Ohrid and Lake Skadar. In those three lakes macrophyte vegetation is distributed in zones (belts). The biodiversity of macrophytes is different in those lakes and it is in direct dependence of different altitudes, lakes surfaces and lakes depths.
ABSTRACTLake Prespa, Lake Ohrid, and Lake Skadar are the biggest lakes in the Balkan Peninsula.In this paper are presented the researches of the fish populations qualitative composition in Lake Prespa, Lake Ohrid and Lake Skadar. In those three lakes as result of negative anthropogenic impact there are changes in fish biodiversity (with more presence of alochtonous species). In this way, unfortunately autochthones populations of fishes (which are rich by endemic and relict species) are endangered.By reason of inserting news species, the fish populations are endangered, especially the populations of particular zoographically significant species. So, it is necessary to proceed the procedure to their inserting in the Red list of endangered species.The abundance of the fish populations in the three biggest lakes in the Balkan Peninsula is in dependence from of their different altitudes, surfaces and depths. Also, the qualitative composition of the fish populations in those lakes depend from the different physic-chemical conditions, biological communities (phytoplankton, zooplankton, bottom fauna), and especially from the macrophyte vegetation.Keywords: biodiversityichthyofaunaLake OhridLake Prespa Lake Skadar
Two species from the genus Rutilus (Rafinesque, 1820), R. prespensis and R. albus inhabit Lake Skadar. The conditional factor (K) and length-weight relationships (LWRs) of 165 specimens were studied from January 2008 to January 2009. Based on the LWRs, it was found that R. albus exhibited isometric growth to the stage of sexual maturity, after which it exhibited allometric growth; R. prespensis, exhibited only allometric growth. The conditional factor for the both species significantly differed between months. The spawning period of R. albus began in February, while for R. prespensis it was April-May.
Background: The aim of this study was to assess the diagnostic accuracy for digital mammography, digital breast tomosynthesis, ultrasonography and breast MRI, as a screening methods in dense breasts, applied individually and in combination in detection of an early cancer. Methods: The retrospective study was conducted from January 2021 to september 2024 at the Oncology Institute of Vojvodina in Serbia, which included 168 women with dense breasts who were referred for an examination because of regular control or objective findings in breasts, and who underwent all 4 diagnostics imaging: digital mammography (DM), digital breast tomosynthesis (DBT), ultrasonography (US) and breast MRI. According to the 5th edition of ACR BIRADS atlas, suspicious malignancy was categorized as BIRADS 4 and 5, and benign findings as BIRADS 1, 2 and 3. The reference standard for checking the diagnostic accuracy of these methods was the result of histopathology, if the biopsy is done, or stable radiological finding in the next 12-24 months. Results: The examined women were aged from 28 to 77 years. Histopathology analysis revealed malignancy in 89 women, while 67 had a benign finding (19 was biopsy verified). DM has the lowest sensitivity (87.7%) and specificity (49.3%) in an early cancer detection. Adding of DBT to DM, sensitivity increased to 88.9%, and specificity to 56%. US has a high sensitivity of 90.1%, but a very low specificity of 48%. Breast MRI has the highest sensitivity 95.1%, and specificity 78.7%. Combination of DM+DBT and US yield increased the sensitivity, but decrease the specificity because of high rate of false positive findings. The highest PPV and NPV had breast MRI, 82.8% and 93.7% respectively, and the lowest digital mammography, 65.1% and 78.7% respectively. Adding of breast MRI to DM+DBT+US didnot significant change results in a sensitivity of 97.5%, but it has decreased specificity to 29.3%. Conclusions: US in combination with DM and DBT, can significantly improve the diagnostic accuracy in screening of dense breasts, similar as breast MRI, in regions where there are no magnetic resonance units. Limiting factors are low specificity and high PPV.