NOVI NALAZ CRNKE (Umbra krameri Walbaum 1792) U HRVATSKOJ

Distribution of the European mudminnow, Umbra krameri, Walbaum 1792, in Croatia is scarce with only few confirmed localities. In order to confirm presence of the European mudminnow in amelioration canal network along the Drava River an electrofishing was conducted in the small Mlinski canal. Ten specimen of European mudminnow were caught During sampling. Using ImageJ software a truss network was constructed between landmark points on photographs of caught specimens. Total body lengths of caught European mudminnow ranged from 61 to 100 mm (72.00±11.52 mm) whereas standard one ranged from 52 to 85 mm (60.30±10.08 mm). Body weight were relatively small ranging from 1.81 to 7.59 g (3.80±1.89 g), while the Fulton condition factor ranged from 0.76 to 1.23 (0.96±0.15). This new locality of the European mudminnow is situated about 50 km downstream from the last confirmed site in Croatia.Informacije o distribuciji crnke, Umbra krameri Walbaum 1792, u Hrvatskoj su oskudne, uključujući svega nekoliko potvrđenih lokaliteta. U svrhu potvrđivanja prisutnosti crnke u mreži melioracijskih kanala u blizini rijeke Drave, obavljeno je uzorkovanje ribe elektroagregatom na Mlinskome kanalu. Tijekom uzorkovanja ulovljeno je 10 primjeraka crnke. Korištenjem računalnoga programa ImageJ razvijena je metoda razgranate mreže na fotografijama ulovljenih crnki. Ukupna dužina ulovljenih crnki bila je od 61,00 do 100,00 mm (72,00±11,52 mm), a standardna dužina iznosila je od 52,00 do 85,00 mm (60,30±10,08 mm). Ukupna tjelesna masa bila je relativno mala, u rasponu od 1,81 do 7,59 g (3,80±1,89 g), dok je Fultonov kondicijski indeks iznosio od 0,76 do 1,23 (0,96±0,15). Ova nalazište crnke u Hrvatskoj smješteno je oko 50 km nizvodno od zadnjega potvrđenog lokaliteta uz tok rijeke Drave

ATTENDANCE OF SUNFLOWER (HELIANTHUS ANNUUS L.) BY HONEY BEE (APIS MELLIFERA L.) IN AGRO-ECO SYSTEM OF BARANJA COUNTY

Istraživanje prikazuje posjećenost suncokreta medonosnom pčelom (Apis mellifera carnica) a obavljeno je na poljskom pokusu u slučajnom blok rasporedu koji je obuhvatio 6 hibrida merkantilnog suncokreta (Helianthus annuus L.), najviše zastupljenih na poljima kontinentalne Hrvatske. Mjerenje se provodilo na 100, 200 i 300 metara od košnica. Tijekom mjerenja uočena je različita atraktivnost pojedinog hibrida u pokusu za medonosnu pčelu. Statističkom je analizom utvrđena signifikantna razlika između hibrida H2, kod kojeg je utvrđena najmanja posjećenost, i hibrida H4 kod kojeg je ona bila najveća. Nadalje, analiza podataka je pokazala da je najmanja posjećenost pčelom bila na udaljenosti 200 m od košnica. Na udaljenostima 100 i 300 metara nije bilo veće razlike. Ujedno je bio uočen vrlo mali broj prirodnih oprašivača, što je indikator znatnog smanjenja njihove populacije u agro-eko sustavu Baranje. Tijekom cvatnje suncokreta medonosna pčela zabilježena je kao najzastupljeniji oprašivač. Evidentirana je u 99,53 % mjerenja obavljenih tijekom pokusa, bumbari (Bombus spp.) su evidentirani u 0,32 % mjerenja, dok je muha Volucella zonaria (Poda, 1761) evidentirana u 0,15 % mjerenja. Klimatske prilike tijekom cvatnje suncokreta bile su pogodne za aktivnost pčele (temp. 19,9 - 27,5 °C, relativna vlažnost zraka 65-88% i 16,1 mm oborina tijekom tri dana).The current research investigates attendance of sunflower (Helianthus annuus L.) by honeybee (Apis mellifera L.). The research was conducted in a field experiment in random block arrangement which included 6 most represented hybrids of mercantile sunflower on fields of continental Croatia. Measurement was conducted at 100, 200 and 300 meters distance from beehives. During the investigation different attractiveness of each hybrid for honeybee was observed. Statistical analyses showed statistically significant difference between the hybrid H2, which was the least attended, and the hybrid H4, which was the most attended. Data analysis also showed that honeybees attended the least sunflowers which were 200m distant from hives. At 100 and 300 m distance no statistically significant differences were found. Honeybee was estimated as the most represented pollinator of sunflower during the blooming period: it was recorded in 99.53% of measurement; bumblebee (Bombus spp.) was recorded in 0.32% of measurement, while the fly Volucella zonaria was recorded in 0.15% of measurement. Very small number of natural pollinators observed is an indicator of significant decrease of their population in the agro-eco system of Baranja County

Differences in Fatty Acid Profile and Physical-Chemical Composition of <i>Slavonska slanina</i>—Dry Cured Smoked Bacon Produced from Black Slavonian Pig and Modern Pigs

The objective of this study was to compare the psysico-chemical composition and fatty acid (FFA) profile of traditional dry cured bacon Slavonska slanina, produced from the authentic Black Slavonian Pig (BP) and modern pigs (MP), using traditional homemade principles. The samples of Slavonska slanina produced from BP had a significantly (p p aw and salt content but higher pH. Determination of fatty acid composition was performed at the end of the production process. The composition of fatty acids with respect to the groups of saturated (SFA), monounsaturated (MUFA) and polyunsaturated (PUFA) fatty acids was determined, as well as the ratios n-6/n-3 and PUFA/SFA. The results of fatty acid composition determination of Slavonska slanina produced from BP and MP show that oleic acid (C18: 1n9) is the most dominant fatty acid from the MUFA group (47.02 and 46.25%), the most common SFA acid was palmitic acid (C16: 0) (23.44 and 24.96%), and PUFA linoleic acid (C18: 2n-6c) (10.76 and 9.74%). The genotype had a significant (p Slavonska slanina. The ratios PUFA/SFA (0.34–0.28) and n-6/n-3 (31.84–27.34) for samples of Slavonska slanina produced from BP and MP are in concordance with previously published data for different dry cured meat products, and do not comply with the nutritionally recommended values of international health organizations (PUFA/SFA > 0.4 and n-6/n-3 < 4)