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Kovacic M.,Natural History Museum Rijeka | Patzner R.A.,University of Salzburg | Schliewen U.,Bavarian Natural History Collections
Marine Biology | Year: 2012

Cryptobenthic fish communities are a rarely studied and ill-defined component of the marine benthos. Quantitative sampling of seventy-six 1 × 1 m plots at Cape Šilo, Northern Adriatic Sea, yielded 522 cryptobenthic and 67 epibenthic individuals of 27 species. Canonical Correspondence Analysis (CCA) identified variation of 3 out of 17 habitat variables (depth, presence of bedrock, and presence of short thallus algae on boulders) as significantly and strongly correlated with species occurrence. Interpretation of CCA triplots allowed the description of niches of the 13 most abundant species, as well as the tentative identification of three major habitat types structuring the cryptobenthic fish community (inclined bedrock, infralittoral algae, and the deeper infralittoral mixed bottom). The study highlights the largely unstudied ecological relevance of the cryptobenthic fish community as revealed by an unexpected high diversity and the numerical dominance of some species which previously were considered rare. An improved definition of cryptobenthic fishes is provided. © 2012 Springer-Verlag. Source

Vanhove M.P.M.,Charles University | Kovacic M.,Natural History Museum Rijeka | Koutsikos N.E.,Hellenic Center for Marine Research | Zogaris S.,Hellenic Center for Marine Research | And 3 more authors.
Zoologischer Anzeiger | Year: 2011

A hitherto undescribed population of gobies in the Greek brackish karstic Lake Vouliagmeni was identified as Millerigobius macrocephalus. Molecular phylogenetic analysis using partial mitochondrial ribosomal DNA sequences situates this species as a sister taxon to Zebrus zebrus, thus confirming earlier morphological work. Morphological variation as compared to previous studies on this species is discussed. This is the first report of M. macrocephalus occurring inland and under oligohaline conditions, underlining that our knowledge on diversity and distribution of the European gobiid fauna is still far from complete. The occurrence of this rarely observed fish species might enhance the conservational importance of the lake under study. © 2011 Elsevier GmbH. Source

Agorreta A.,Natural History Museum in London | Agorreta A.,University of Navarra | San Mauro D.,University of Barcelona | Schliewen U.,Bavarian Natural History Collections | And 4 more authors.
Molecular Phylogenetics and Evolution | Year: 2013

Gobioidei is one of the largest suborders of teleost fishes, with nearly 2000 extant species currently recognized. They have a worldwide distribution and show a spectacular variety in morphology, ecology, and behavior. Despite their importance, phylogenetic relationships among many groups of gobioids (including some of the major lineages) still remain poorly understood. In this study, we analyze sequence data of five molecular markers (two mitochondrial and three nuclear) averaging 6000. bp for 222 species of gobioids. Our study is the first to include both multiple nuclear and mitochondrial genes to reconstruct a comprehensive multilocus phylogeny of gobioids encompassing most major lineages representing the overall diversity of one of the most speciose vertebrate lineages. Two separate datasets are produced and used to specifically address the phylogenetic placement of Rhyacichthyidae and Odontobutidae, and the phylogenetic relationships among gobioid lineages. Our results strongly support that the initial split in the gobioid tree separated a clade containing Rhyacichthyidae. +. Odontobutidae as the sister group of all other lineages. The family Eleotrididae branches off the gobioid tree after the Rhyacichthyidae. +. Odontobutidae clade, followed by the Butidae as sister group to the Gobiidae. Additionally, several major monophyletic groups are confidently identified within the two major Gobiidae subclades, the gobiine-like gobiids and the gobionelline-like gobiids. Robustness of the phylogenetic trees inferred here is significantly higher than that of previous studies, hence our results provide the most compelling molecular phylogenetic hypothesis of Gobioidei thus far. For the first time, we provide a comprehensive sampling of European gobies that traditionally have been divided into "transverse" gobies and "sand gobies". We show that the European gobies cluster in three distinct lineages, the Pomatoschistus-, Aphia-, and Gobius-lineages. The former resolved within the gobionelline-like gobiids and the latter two within the gobiine-like gobiids. These findings have significant implications for our understanding of the phylogeographic origin of European gobies in the light of the closure of the Paratethys. A rogue taxon analysis identified Kraemeria as an unstable taxon decreasing support at the base of the gobiine-like gobiids. Removal of this rogue taxon significantly increased phylogenetic resolution in that part of the tree and revealed additional insights into early bursts of cladogenesis of the gobiine-like gobiids. © 2013 Elsevier Inc. Source

Giacobbe S.,Messina University | Spinelli A.,Messina University | De Matteo S.,Mare Nostrum Italia | Kovacic M.,Natural History Museum Rijeka
Acta Ichthyologica et Piscatoria | Year: 2016

Two confined populations of an inadequately known gobiid, Millerigobius macrocephalus (Kolombatović, 1891), new species for Italy, have been reported for the protected areas of “Capo Peloro Lagoon” and “Marinello Lakes”, NE Sicily. The specimens found were described and illustrated. Additional data were provided on the habitat preferences of this fish species. The authors emphasize the need for biodiversity inventories of inadequately studied Mediterranean lagoons. © 2016, Scientific Society of Szczecin. All Rights Reserved. Source

This paper provides literature review data for Lutraria angustior Philippi, 1844 and Lutraria oblonga (Gmelin, 1791) in the eastern Adriatic Sea as well as new findings for this species. One bivalve specimen of L. angustior from the area of Vrulja (between Omis and Makarska) was collected by I. Bilopavlović, one subfossil specimen and two single shells were collected by D. Iglić in Novsko źdrilo. D. Marguš found shells of L. oblonga at the river Krka mouth, Ž. Krstinić three living specimens in the vicinity of Rab Island, and D. Iglić two subfossil specimens in Ljubač Strait. Source

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