Taxonomic, biological and ecological characteristics of the genus Telestes Bonaparte 1837 (Actinopterygii)in the area of Velika Kapela and Mala Kapela mountains

U ovom su radu prvi put istražene taksonomske te biološko-ekološke značajke riba iz roda Telestes na području Velike i Male Kapele. Uzorak je prikupljen elektroribolovom, a dodatni podaci prikupljeni su metodom opažanja tijekom ronjenja. Ovim je istraživanjem dokazano da na području istraživanja dolaze dvije vrste unutar ovog roda; svijetlica - T. polylepis sa sjeveroistočne strane i kapelska svijetlica - T. karsticus s jugozapadne strane planina Velike i Male Kapele. Znatno su se povećala znanja o rasprostranjenosti, morfometriji i meristici obiju vrsta te strukturi populacije, dužinsko-masenim odnosima, prehrani, starosti i rastu, razmnožavanju i smrtnosti kapelske svijetlice. Kapelska je svijetlica eurifagni omnivor i hrani se uglavnom makrozoobentosom, iako su u probavilu pronađeni i kopneni kukci, slatkovodni račići, ribe te alge i biljni materijal. Spolno je zrela u starosnoj kategoriji 1+, spada u litofile, a razmnožava se od sredine ožujka do sredine svibnja. Najstarija je jedinka kapelske svijetlice bila u starosnoj kategoriji 5+.In this thesis, the taxonomic, biological and ecological characteristics of the genus Telestes in the area of the Velika and Mala Kapela mountains were examined. Samples were collected by electrofishing and in a visual dive census. Two distinct species of the genus Telestes were found in the area of investigation; T. polylepis and T. karsticus, each on the opposite side of the Velika and Mala Kapela mountains. Accordingly, the knowledge of the distribution, morphometric and meristic characteristics for both species has been significantly improved. Also, the knowledge of the population structure, length-weight relationships, diet, age and growth, reproduction and mortality of T. karsticus has greatly improved. This species is a euryphagous omnivore. Benthic invertebrates accounted for the majority of the food consumed, although terrestrial insects, plant material, algae and fish were also found. The species sexually matures at the age of 1+. It is a litophylic species that spawns from mid-March to mid-May. The oldest specimen found was at the age of 5+

Morfološka raznolikost i odnosi populacija Scardinius dergle i Scardinius plotizza (Actinopteri; Cypriniformes) iz Hrvatske i Bosne i Hercegovine

Genus Scardinius (Cypriniformes, Actinopteri) belongs to the family Leuciscidae, subfamily Leuciscinae, and it includes 10 species. Phylogenetic and morphometric research conducted so far have shown a great taxonomic complexity within this genus. Therefore, the aim of this research was to determine the morphological diversity and contribute to the clarification of taxonomic relationships and status of S. dergle and S. plotizza. For the purpose of this research specimens of S. dergle and S. plotizza were collected from their whole distribution area in Croatia and Bosnia and Herzegovina. On each individual 25 morphometric characters were measured, standardized with allometric conversion and analysed using descriptive and inferential statistics. Results showed significant intra- and interspecific differences in investigated morphometric characters. In addition, distinct grouping of populations of each species and partial overlapping of some populations of both species was recorded, reflecting their possible relationships. Also, investigated meristic characters showed accordance with deterministic values for most investigated populations. Although this research has given indications of relationships and the status of populations of S. dergle and S. plotizza, in order to confirm the results and determine the exact taxonomic status, phylogenetic relationships and genetic diversity of these species, further phylogenetic research is needed.Rod Scardinius (Cypriniformes, Actinopteri) pripada porodici Leuciscidae, potporodici Leuciscinae, a obuhvaća 10 vrsta. Do sada provedena filogenetička i morfometrijska istraživanja pokazala su veliku taksonomsku složenost unutar ovog roda. Stoga, cilj ovog istraživanja bio je utvrditi morfološku raznolikost i pridonijeti razjašnjenju taksonomskih odnosa i statusa S. dergle i S. plotizza. U svrhu ovog istraživanja uzorci S. dergle i S. plotizza prikupljeni su sa cijelog njihovog područja rasprostranjenosti u Hrvatskoj i Bosni i Hercegovini. Na svakoj jedinici izmjereno je 25 morfometrijskih značajki, koje su standardizirane alometrijskom pretvorbom i analizirane pomoću deskriptivne i inferencijalne statistike. Rezultati su pokazali značajne intra- i interspecifične razlike u ispitivanim morfometrijskim značajkama. Uz to, zabilježeno je zasebno grupiranje populacija svake vrste i djelomično preklapanje nekih populacija obje vrste, odražavajući njihov moguće odnose. Također, zabilježene merističke značajke su u skladu s determinističkim vrijednostima za većinu istraživanih populacija. Iako je ovo istraživanje dalo indikacije odnosa i statusa populacija S. dergle i S. plotizza, kako bi se potvrdili rezultati i utvrdio točan taksonomski status, filogenetički odnosi i genetska raznolikost ovih vrsta, potrebna su daljnja filogenetička istraživanja

UGROŽENE VRSTE RIBA U SVIJETU: Cobitis jadovaensis Mustafić & Mrakovčić, 2008 (Cyprinidae)

Cobitis jadovaensis is a stenoendemic freshwater fish species distributed only in the River Jadova, a small stream in the karst region of Lika in Croatia. Major threats for this fish species are: extremely limited distribution, water abstraction, introduction of alien fish species and increasing severity of droughts. Recommendations for conservation are: habitat protection, prevention of outspreading of alien species from the River Lika and bans on introduction of newalien fish species.Jadovski vijun je stenoendemska slatkovodna riba rasprostranjena samo u rijeci Jadovi, maloj rijeci u Lici, u Hrvatskoj. Glavni uzroci ugroženosti ove vrste su izrazito usko područje rasprostranjenosti, ekstrakcija vode, česte suše uzrokovane klimatskim promjenama i unos alohtonih vrsta riba. Za očuvanje ove vrste predlaže se zaštita staništa, sprječavanje širenja invazivnih vrsta riba iz rijeke Like te zabrana unosa novih alohtonih vrsta riba

NOVI NALAZI OBRVANA, Aphanius fasciatus (Valenciennes, 1821), U HRVATSKOJ

Two new locations of Mediterranean toothcarp (Aphanius fasciatus) were confirmed along the eastern Adriatic coast: one on the island of Rab and the second near the small village of Zablaće, near Šibenik. At both locations, multiple individuals of both sexes were caught using a small hand net. Total length ranged from 12.4 to 39.4 mm and weight ranged from 0.1 to 0.8 g.Dva nova lokaliteta obrvana (Aphanius fasciatus) potvrđena su na istočnoj obali Jadranskog mora. Prvi je lokalitet na otoku Rabu, a drugi je pokraj sela Zablaće u blizini Šibenika. Na obje lokacije malom ručnom mrežicom zabilježeno je više jedinki oba spola. U radu su prikazane glavne morfometrijske i merističke mjere. Totalna dužina (TL) zabilježenih jedinki obrvana varirala je od 12,4 do 39,4 mm, a masa od 0,1 do 0,8 g

PRVI NALAZ KOLJUŠKE (Gasterosteus aculeatus Linneaeus, 1758) U DUNAVSKOM SLIJEVU U HRVATSKOJ

One specimen of three-spined stickleback (Gasterosteus aculeatus) was found in a puddle near the Mura River in October 2014 near the town of Mursko Središće. This is the first record of this species in the Danube Basin of Croatia.Jedna jedinka koljuške (Gasterosteus aculeatus) pronađena je u privremenoj lokvi pokraj rijeke Mure u listopadu 2014. godine pokraj mjesta Mursko Središće. Ovo je prvi nalaz koljuške u dunavskom slijevu u Hrvatskoj

Estructura genética poblacional e historia demográfica de Aphanius fasciatus (Cyprinodontidae: Cyprinodontiformes) en hábitats hipersalinos del Adriático oriental

In order to investigate the phylogeography and population genetic structure of the South European toothcarp (Aphanius fasciatus), we analysed gene sequences of two mitochondrial markers (cytochrome b and mtDNA control region) in samples from eight localities along the eastern Adriatic coast and combined them with sequences from other Mediterranean localities. Since the South European toothcarp primarily inhabits hypersaline water bodies, it is a good model species for understanding patterns of colonization and dispersal of species adapted to variable conditions. The eastern Adriatic populations are separated into two groups of genetically related populations. The Northern group contains the populations from Sečovlje, Pag, Dinjiška, Nin and Pantan, whereas the Southern group contains the populations from Ston, Ulcinj and Narta. The majority of divergence events date back to the Pleistocene epoch and it is likely that sea level changes during glacial cycles played a significant role in shaping the recent genetic structure of this species. Our results imply pronounced intraspecific structuring of this species, whereas great environmental variations resulted in a smaller intrapopulational genetic diversity of A. fasciatus than seen in other Mediterranean fishes.Con el objetivo de analizar la estructura genética y filogeografía de las poblaciones del fartet oriental (Aphanius fasciatus), se analizaron secuencias de genes de dos regiones mitocondriales (citocromo b y región de control del ADNmt) en individuos de ocho localidades a lo largo de la costa oriental del Adriático y de otras localidades mediterráneas. El fartet oriental habita principalmente masas de agua hipersalinas, y es una buena especie modelo para el estudio de los patrones de colonización y dispersión de especies adaptadas a condiciones variables. Los resultados de nuestro estudio muestran que las poblaciones del Adriático oriental se separan en dos grupos genéticamente relacionados. El grupo del Norte contiene las poblaciones de Sečovlje, Pag, Dinjiška, Nin y Pantan, mientras que el grupo del Sur contiene las poblaciones de Ston, Ulcinj y Narta. La mayoría de los eventos de divergencia pudiera ser que se remontaran a la época del Pleistoceno, y es probable que los cambios del nivel del mar durante los ciclos glaciales jugasen un papel importante en la estructura genética reciente de esta especie. Nuestros resultados revelan diferencias intraespecíficas pronunciadas en el fartet oriental, y por otro lado menor diversidad genética intrapoblacional como resultado de grandes variaciones ambientales en comparación con otros estudios de peces del Mediterráneo

UGROŽENE VRSTE RIBA U SVIJETU: Telestes turskyi (Heckel, 1843) (Cyprinidae)

Tursky dace, Telestes turskyi, is a freshwater species endemic to the Adriatic drainage. This species is found only in two rivers in Croatia, the River Krka and River Čikola, and is protected by Croatian law. Major threats for this species are extremely limited distribution, river regulation, water extraction and pollution. Suggested conservation actions for this species are: habitat protection, bans on regulation and alteration of watercourse and restriction of introduction of alien fish species.Turski klen, Telestes turskyi, je slatkovodna riba endemična za Jadranski slijev. Živi samo u dvije rijeke u Hrvatskoj, rijeci Krki i rijeci Čikoli te je zakonom zaštićena. Glavni uzroci ugroženosti ove vrste su ograničeno područje rasprostranjenosti, regulacije riječnog toka i onečišćenje vode. Za očuvanje ove vrste predlaže se zaštita staništa te zabrana regulacije i promjene vodotoka kao i zabrana unosa alohtonih vrsta

THREATENED FISHES OF THE WORLD: Orsinogobius croaticus (Mrakovčić, Kerovec, Mišetić and Schneider, 1996) (Teleostei: Gobiidae)

Orsinogobius croaticus je slatkovodna riba s malom i ograničenom rasprostranjenosti u Jadranskom bazenu u Hrvatskoj i Bosni i Hercegovini gdje nastanjuje hladne krške rijeke i izvore. Glavne prijetnje populacijama su fragmentacija staništa, smanjena kakvoća staništa i unošenje stranih vrsta. Predlažu se preporuke zaštite za poboljšanje učinkovitog očuvanja staništa i proširenje znanja o ovoj vrsti.Orsinogobius croaticus is a freshwater fish with a small and limited distribution range in the Adriatic basin in Croatia and Bosnia-Herzegovina, where it inhabits cold karstic rivers and springs. The main threats to its populations include habitat fragmentation, declining habitat quality and the introduction of alien species. Conservation recommendations are proposed to improve effective habitat preservation and to expand the knowledge about this species

A REVIEW OF EXTANT CROATIAN FRESHWATER FISH AND LAMPREYS Annotated list and distribution

Prvi je put izrađen popis hrvatskih slatkovodnih riba. Temelji se na 1360 povijesnih i novijih literaturnih podataka. Na temelju pregleda literature, u Hrvatskoj je, do danas, zabilježeno 137 vrsta riba iz 30 porodica i 75 rodova. Popis je organiziran sistematski i u njemu se navode podaci o rasprostranjenosti slatkovodne ihtiofaune te jesu li vrste endemične, unesene ili prenesene (translocirane).A checklist of the freshwater fish fauna of Croatia is presented for the first time. It is based on 1360 publications of historical and recent data in the literature. According to the literature review, there were 137 fish species in 30 families and 75 genera recorded in Croatia. The checklist is systematicallyarranged and provides distributional data of the freshwater fish fauna as well as whether the species is endemic, introduced or translocated