In this Collective Article on “New Mediterranean Biodiversity Records”, we present additional records of species found in the Mediterranean Sea. These records refer to eight different countries throughout the northern part of the basin, and include 28 species, belonging to five phyla. The findings per country include the following species: Spain: Callinectes sapidus and Chelidonura fulvipunctata; Monaco: Aplysia dactylomela; Italy: Charybdis (Charybdis) feriata, Carcharodon carcharias, Seriola fasciata, and Siganus rivulatus; Malta: Pomacanthus asfur; Croatia: Lagocephalus sceleratus and Pomadasys incisus; Montenegro: Lagocephalus sceleratus; Greece: Amathia (Zoobotryon) verticillata, Atys cf. macandrewii, Cerithium scabridum, Chama pacifica, Dendostrea cf. folium, Ergalatax junionae, Septifer cumingii, Syphonota geographica, Syrnola fasciata, Oxyurichthys petersi, Scarus ghobban, Scorpaena maderensis, Solea aegyptiaca and Upeneus pori; Turkey: Lobotes surinamensis, Ruvettus pretiosus and Ophiocten abyssicolum. In the current article, the presence of Taractes rubescens (Jordan & Evermann, 1887) is recorded for the first time in the Mediterranean from Italy. The great contribution of citizen scientists in monitoring biodiversity records is reflected herein, as 10% of the authors are citizen scientists, and contributed 37.5% of the new findings.
The growth pattern of the endemic Neretvan roach, Rutilus basak from the Hutovo Blato wetlands was analyzed. A total of 441 specimens ranging from 6.0 to 21.7 cm TL were obtained by electro fishing between December 2007 and November 2008. The male:female ratio for all fish combined was 0.34 : 1.00 but changed across length classes. The spawning period extended from February to April, with a peak in the first half of March. Maximum observed age was 10 years. Predominance of age classes 1-5 in the catch (77.0% of individuals) was noted. The length-weight relationship showed a positive allometric growth (b = 3.321; R 2 = 0.957). Parameters of the von Bertalanffy equation were: L ¥ = 20.201 cm; K = 0.257 per year; t 0 = )1.554 year; R 2 = 0.977. This study revealed that R. basak invests energy in reproduction rather than in body size and thus has a relatively fast growth, short life span and precocious maturity. Moreover, elementary biological population parameters are provided that can be used for conservation purposes.
Feeding habits of Grass goby, Zosterisessor ophiocephalus (Pallas, 1814) related to season, sex and size were examined during one year. Stomach contents of 302 specimens were examined, of which 91 stomachs were empty. The sampled population consisted of 136 females (45.03%) ranging from 6.8 to 19.3 cm (13.30 ± 2.24), 156 males (51.65%) ranging from 6.1 to 20.2 cm (14.14 ± 2.91) and 10 unspecified (3.31%) individuals of a length of 5.6 to 16.0 cm (10.07 ± 2.91). Grass goby is mainly carnivorous. The dietary preferences among sexes and sizes did not differ statistically. Results indicate that Grass goby is an opportunistic species that feeds on wide spectrum on prey. Decapods were the most important prey (IRI =3208.49), followed by Osteichthyes (IRI=490.03).
Bioekonomija jedna je od politika Europske unije koja ima za cilj osnažiti gospodarstva kroz veću učinkovitost korištenja biomase putem brojnih inovacija te olakšati prijelaz na zelene politike kroz dobavu obnovljivog ugljika u društvo. Poljoprivreda kao primarni proizvodni sektor ima važnu ulogu u razvoju kružne i održive bioekonomije. Istraživanje je provedeno na poljoprivrednim proizvođačima, članovima Hrvatske poljoprivredne komore u 6 fokus grupa, Delfi metodom. Prosječno je sudjelovalo 10 ispitanika po fokus grupi. Cilj ispitivanja je ustanoviti prepreke i sklonost prema inovacijama u okviru bioekonomije. Rezultati su pokazali potrebu za prilagođavanjem mjera te usuglašavanjem poljoprivrednih politika u skladu s potrebama prakse, većim udruživanjem proizvođača, logističkom infrastrukturom, prijenosom informacija i znanja kako bi poljoprivredni proizvođači prepoznali prilike za rast koje nudi kružna i održiva bioekonomija.
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