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Kovai M, Ztrk DS, Innal D. The morphology and mitochondrial DNA barcode of Knipowitschia caucasica (Berg, 1916) (Gobiiformes: Gobiidae) from Karpuzay, Levantine Sea, the easternmost record of Knipowitschia species in the Mediterranean Sea. Zootaxa 2023; 5360:219-238. [PMID: 38220615 DOI: 10.11646/zootaxa.5360.2.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Indexed: 01/16/2024]
Abstract
Knipowitschia is a sand-goby genus historically comprising 17 species. The congeneric Knipowitschia species show discordance between morphology and genetics in two ways: the morphologically similar species that are clearly distinct by genetics and the morphologically and ecologically distinct populations that are similar by genetics. A sample of Knipowitschia individuals has been collected from Karpuzay Creek on the Levantine Sea coast. It is the easternmost Mediterranean record of any Knipowitschia, and a number of arguments suggest it is native. Among the presently valid Knipowitschia species, the population was identified by both genetics and morphology as K. caucasica. The detailed morphological description and genetics are provided for this population. The morphology of the present sample fits within the highly variable morphology of east Aegean populations presently recognized as K. caucasica, although with the extreme values of the already known morphological and coloration variability.
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Affiliation(s)
- Marcelo Kovai
- Natural History Museum Rijeka; Lorenzov prolaz 1; HR-51000 Rijeka; Croatia.
| | | | - Deniz Innal
- Burdur Mehmet Akif Ersoy University; Department of Biology; Burdur; Trkiye.
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2
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Kalaycı G. Pliocene-Pleistocene dispersal bring along low inter species diversity between Vimba species based on multilocus analysis. ZOOSYST EVOL 2022. [DOI: 10.3897/zse.98.76937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study investigates phylogenetic and phylogeographic relationships of Vimba species using mitochondrial cytochrome b (cyt b) (1023 bp) and cytochrome c oxidase subunit I (COI) barcoding region (652 bp) genes. Ninety-one samples from 36 populations for the cyt b gene and 67 samples from 20 populations for the COI were analyzed. We identified 29 haplotypes and calculated overall haplotype diversity as Hd: 0.907 ± 0.015 for cyt b. We also identified 13 COI haplotypes and calculated overall haplotype diversity as 0.826 ± 0.026 for this marker. The phylogenetic analysis of Vimba species reveals the presence of four clades, based on concatenated cyt b and COI sequences. The first and second clade consist of Vimba vimba Western lineage, and Vimba vimba Caspian lineage, while the third and fourth clade consist of Vimba mirabilis and Vimba melanops. Based on haplotype network analyses and phylogeographic inferences, the Vimba genus is monophyletic, and its species dispersed in the Pleistocene era.
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Iftime A, Oel V. Is Knipowitschia cameliae Nalbant et Oel, 1995 (Osteichthyes: Gobiiformes: Gobiidae) a valid species? Zootaxa 2021; 4999:197-200. [PMID: 34810492 DOI: 10.11646/zootaxa.4999.2.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Indexed: 11/04/2022]
Affiliation(s)
- Alexandru Iftime
- Grigore Antipa National Museum of Natural History, Kiseleff St. No 1, 011341 Bucharest 1, Romania. .
| | - Vasile Oel
- Independent researcher, Grii st. no.6, bl.3, sc. A, ap. 4, 820157 Tulcea, Romania. .
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Tougard C, Vukić J, Ahnelt H, Buj I, Kovačić M, Moro GA, Tutman P, Šanda R. Quaternary climatic cycles promoted (re)colonization and diversification events in Adriatic sand gobies. J ZOOL SYST EVOL RES 2021. [DOI: 10.1111/jzs.12468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Jasna Vukić
- Department of Ecology Faculty of Science Charles University Prague Czech Republic
| | - Harald Ahnelt
- Department of Evolutionary Biology Faculty of Life Sciences University of Vienna Vienna Austria
- First Zoological Department Natural History Museum in Vienna Vienna Austria
| | - Ivana Buj
- Department of Zoology Faculty of Science University of Zagreb Zagreb Croatia
| | | | | | - Pero Tutman
- Laboratory for Ichthyology and Coastal Fisheries Institute of Oceanography and Fisheries Split Croatia
| | - Radek Šanda
- Department of Zoology National Museum Prague Czech Republic
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Tutman P, Zanella D, Horvatić S, Hamzić A, Adrović A, Dulčić J, Glamuzina B. Freshwater gobies (Gobiidae) of Bosnia and Herzegovina: a review of the current status and distribution. JOURNAL OF VERTEBRATE BIOLOGY 2020. [DOI: 10.25225/jvb.20046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Pero Tutman
- Institute of Oceanography and Fisheries, Split, Croatia; e-mail: ,
| | - Davor Zanella
- University of Zagreb, Faculty of Science, Zagreb, Croatia; e-mail: ,
| | - Sven Horvatić
- University of Zagreb, Faculty of Science, Zagreb, Croatia; e-mail: ,
| | - Adem Hamzić
- University of Sarajevo, Faculty of Science, Sarajevo, Bosnia and Herzegovina; e-mail:
| | - Avdul Adrović
- University of Tuzla, Faculty of Science, Tuzla, Bosnia and Herzegovina; e-mail:
| | - Jakov Dulčić
- Institute of Oceanography and Fisheries, Split, Croatia; e-mail: ,
| | - Branko Glamuzina
- University of Dubrovnik, Department for Aquaculture, Dubrovnik, Croatia; e-mail:
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6
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Changes in Fish Taxonomy Affect Freshwater Biogeographical Regionalisations: Insights from Greece. WATER 2019. [DOI: 10.3390/w11091743] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Freshwater fishes are key indicators for delineating biogeographical maps worldwide. However, controversy in regional-scale ichthyogeographic boundaries still persists, especially in areas of high species endemicity, such as in Greece. One problem concerns the taxonomy of the fishes because there have been extensive changes, mainly due to an increased splitting of species in recent years in Europe. Here, we explore why ichthyogeographic boundary disagreements and uncertainties in region-scale biogeographical units persist. We compare cluster analyses of river basin fish fauna in Greece using two taxonomic datasets: the older fish taxonomy (from 1991) and the current taxonomy that now follows the phylogenetic species concept (PSC), which has become widely established in Europe after 2007. Cluster analyses using the older fish taxonomy depicts only two major biogeographical regional divisions, while the current taxonomy defines four major regional divisions in mainland Greece. Interestingly, some older maps from the pre-PSC taxonomy era also similarly show four ichthyogeographic divisions in Greece and we can assume that the older biogeographical work did not solely use numerical taxonomy but followed an expert-guided synthesis; the older regional definitions have persisted quite well despite radical changes in Europe’s fish taxonomy. Through the prism of biodiversity conservation planning, we hope this review may help identify ways to help standardize policy-relevant biogeographical mapping.
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Thacker CE, Gkenas C. Morphometric convergence among European sand gobies in freshwater (Gobiiformes: Gobionellidae). Ecol Evol 2019; 9:8087-8103. [PMID: 31380073 PMCID: PMC6662260 DOI: 10.1002/ece3.5375] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 05/23/2019] [Accepted: 05/23/2019] [Indexed: 11/12/2022] Open
Abstract
The five genera of sand gobies inhabit the seas and freshwaters of Europe and western Asia and occupy habitats ranging from fully marine to exclusively freshwater. In this study, we use geometric morphometrics to quantify body shape among sand gobies, in order to investigate how shape has evolved and how it is related to habitat. We also compare body shape between preserved museum specimens and fresh specimens, to determine whether or not fixation and storage in ethanol introduce detectable bias. We confirm that the fixed specimens exhibit significant shape changes as compared to fresh specimens, and so, we perform the bulk of our analyses exclusively on fixed specimens. We find that Economidichthys, Orsinigobius, and Pomatoschistus occupy distinct regions of morphospace. Knipowitschia and Ninnigobius have intermediate forms that overlap with Pomatoschistus and Orsinigobius, but not Economidichthys. This pattern is also in rough accordance with their habitats: Pomatoschistus is fully marine, Economidichthys fully freshwater, and the others fresh with some brackish tolerance. We augment a recent phylogeny of sand gobies with data for P. quagga and interpret morphometric shape change on that tree. We then evaluate convergence in form among disparate lineages of freshwater species by constructing a phylomorphospace and applying pattern-based (convevol) measures of convergence. We find that freshwater taxa occupy a mostly separate region of morphospace from marine taxa and exhibit significant convergence in form. Freshwater taxa are characterized by relatively larger heads and stockier bodies than their marine relatives, potentially due to a common pattern of heterochronic size reduction.
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Affiliation(s)
- Christine E. Thacker
- Vertebrate Zoology, Collections and ResearchSanta Barbara Museum of Natural HistorySanta BarbaraCalifornia
- Research and Collections, Section of IchthyologyNatural History Museum of Los Angeles CountyLos AngelesCalifornia
| | - Christos Gkenas
- Faculdade de CiênciasMARE, Centro de Ciências do Mar e do AmbienteUniversidade de LisboaLisboaPortugal
- Laboratory of ZoologyDepartment of Biological Applications and TechnologyUniversity of IoanninaIoanninaGreece
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8
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Phylogeny, systematics and biogeography of the European sand gobies (Gobiiformes: Gobionellidae). Zool J Linn Soc 2018. [DOI: 10.1093/zoolinnean/zly026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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9
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Svensson O, Gräns J, Celander MC, Havenhand J, Leder EH, Lindström K, Schöld S, van Oosterhout C, Kvarnemo C. Immigrant reproductive dysfunction facilitates ecological speciation. Evolution 2017; 71:2510-2521. [PMID: 28791680 DOI: 10.1111/evo.13323] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 08/01/2017] [Accepted: 08/05/2017] [Indexed: 01/20/2023]
Abstract
The distributions of species are not only determined by where they can survive - they must also be able to reproduce. Although immigrant inviability is a well-established concept, the fact that immigrants also need to be able to effectively reproduce in foreign environments has not been fully appreciated in the study of adaptive divergence and speciation. Fertilization and reproduction are sensitive life-history stages that could be detrimentally affected for immigrants in non-native habitats. We propose that "immigrant reproductive dysfunction" is a hitherto overlooked aspect of reproductive isolation caused by natural selection on immigrants. This idea is supported by results from experiments on an externally fertilizing fish (sand goby, Pomatoschistus minutus). Growth and condition of adults were not affected by non-native salinity whereas males spawning as immigrants had lower sperm motility and hatching success than residents. We interpret these results as evidence for local adaptation or acclimation of sperm, and possibly also components of paternal care. The resulting loss in fitness, which we call "immigrant reproductive dysfunction," has the potential to reduce gene flow between populations with locally adapted reproduction, and it may play a role in species distributions and speciation.
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Affiliation(s)
- Ola Svensson
- Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.,Centre for Marine Evolutionary Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden.,Current Address: School of Natural Sciences, Technology and Environmental Studies, Södertörn University, SE-141 89 Huddinge, Sweden
| | - Johanna Gräns
- Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Malin C Celander
- Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.,Centre for Marine Evolutionary Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Jonathan Havenhand
- Centre for Marine Evolutionary Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden.,Department of Marine Sciences, University of Gothenburg, Tjärnö, SE-452 96 Strömstad, Sweden
| | - Erica H Leder
- Centre for Marine Evolutionary Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden.,Department of Biology, University of Turku, FI-20014 Turun yliopisto, Finland.,Natural History Museum, University of Oslo, P.O. Box 1172 Blindern, NO-0318, Oslo, Norway
| | - Kai Lindström
- Environmental and Marine Biology, Åbo Akademi University, Tykistökatu 6, FI-20520 Turku, Finland
| | - Sofie Schöld
- Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.,Current Address: Swedish Meteorological and Hydrological Institute, Folkborgsvägen 17, SE-603 80 Norrköping, Sweden
| | - Cock van Oosterhout
- School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom
| | - Charlotta Kvarnemo
- Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.,Centre for Marine Evolutionary Biology, University of Gothenburg, SE-405 30 Gothenburg, Sweden
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10
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Horvatić S, Cavraro F, Zanella D, Malavasi S. Sound production in the Ponto-Caspian gobyNeogobius fluviatilisand acoustic affinities within theGobiuslineage: implications for phylogeny. Biol J Linn Soc Lond 2015. [DOI: 10.1111/bij.12696] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Sven Horvatić
- Department of Zoology; Faculty of Science; University of Zagreb; Rooseveltov trg 6 10000 Zagreb Croatia
| | - Francesco Cavraro
- CEMAS - Centre for Estuarine and Coastal Marine Science; Department of Environmental Sciences; Informatics and Statistics; Università Ca' Foscari Venezia; Campo della Celestia Castello 2737/b 30122 Venice Italy
| | - Davor Zanella
- Department of Zoology; Faculty of Science; University of Zagreb; Rooseveltov trg 6 10000 Zagreb Croatia
| | - Stefano Malavasi
- CEMAS - Centre for Estuarine and Coastal Marine Science; Department of Environmental Sciences; Informatics and Statistics; Università Ca' Foscari Venezia; Campo della Celestia Castello 2737/b 30122 Venice Italy
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11
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Tougard C, Folly J, Berrebi P. New light on the evolutionary history of the common goby (Pomatoschistus microps) with an emphasis on colonization processes in the Mediterranean Sea. PLoS One 2014; 9:e91576. [PMID: 24646724 PMCID: PMC3960122 DOI: 10.1371/journal.pone.0091576] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 02/13/2014] [Indexed: 11/19/2022] Open
Abstract
Through the study of the phylogeographic structure and demographic history of the common goby, Pomatoschistus microps, the influence of Quaternary climatic changes on the evolutionary history of coastal and marine fishes is investigated. Because of its sedentary life cycle in Mediterranean lagoons, it is also a good model to study more specifically if the formation of lagoons during the Holocene had an impact on population structure and demography. Mitochondrial sequences of Northeastern Atlantic and Western Mediterranean specimens were used for phylogenetic reconstructions as well as divergence time estimates, demographic history and population structure analyses. Pomatoschistus microps was a highly supported monophyletic clade including four lineages. It may have appeared 77,000 yr ago, and the divergence of its lineages likely occured shortly thereafter (between 61,000 and 54,000 yr). Most lineages had polytomic topologies, low nucleotide diversity and demographic analyses providing evidence of population expansion. Each lineage was characterized by a large number of private haplotypes. Most haplotypes found in Mediterranean localities were endemic, and one was dominant. Complex reticulated relationships connecting North European, Atlantic and Mediterranean haplotypes were observed. Moderate to high population structure was underlined. Contrary to previous published studies, no significant differentiation was observed between Atlantic and Mediterranean populations, indicating that the Gibraltar Strait is not a phylogeographic break for P. microps. Indeed, molecular dating combined with the tree topologies, phylogeographic and demographic analyses as well as high haplotype diversity underline a recent and rapid population divergence during the last glacial. However, population structure indicates that differentiation is an ongoing process. From an ancestral population trapped in the Atlantic, this goby colonized first northern Europe and later the Mediterranean Sea. Shared haplotypes could have dispersed in the western Mediterranean basin before the lagoon formation, while most private haplotypes, evidencing a recent isolation, probably diverged in lagoons after their closure.
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Affiliation(s)
- Christelle Tougard
- Institut des Sciences de l’Evolution de Montpellier, UMR CNRS 5554, Montpellier, France
- * E-mail:
| | - Joy Folly
- Institut des Sciences de l’Evolution de Montpellier, UMR CNRS 5554, Montpellier, France
| | - Patrick Berrebi
- Institut des Sciences de l’Evolution de Montpellier, UMR CNRS 5554, Montpellier, France
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12
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Hammer MP, Unmack PJ, Adams M, Raadik TA, Johnson JB. A multigene molecular assessment of cryptic biodiversity in the iconic freshwater blackfishes (Teleostei: Percichthyidae:Gadopsis) of south-eastern Australia. Biol J Linn Soc Lond 2014. [DOI: 10.1111/bij.12222] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Michael P. Hammer
- Evolutionary Biology Unit; South Australian Museum; North Terrace SA 5000 Australia
- Australian Centre for Evolutionary Biology and Biodiversity; School of Earth and Environmental Science; The University of Adelaide; Adelaide SA 5005 Australia
- Curator of Fishes, Museum and Art Gallery of the Northern Territory; PO Box 4646 Darwin NT 0801 Australia
| | - Peter J. Unmack
- WIDB 401; Department of Biology; Brigham Young University; Provo UT 84602 USA
- Institute for Applied Ecology and Collaborative Research Network for Murray-Darling Basin Futures; University of Canberra; Canberra ACT 2601 Australia
| | - Mark Adams
- Evolutionary Biology Unit; South Australian Museum; North Terrace SA 5000 Australia
- Australian Centre for Evolutionary Biology and Biodiversity; School of Earth and Environmental Science; The University of Adelaide; Adelaide SA 5005 Australia
| | - Tarmo A. Raadik
- Aquatic Ecology Section; Arthur Rylah Institute for Environmental Research; Department of Environment and Primary Industries; 123 Brown Street Heidelberg VIC 3084 Australia
| | - Jerald B. Johnson
- WIDB 401; Department of Biology; Brigham Young University; Provo UT 84602 USA
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13
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Vanhove MPM, Tessens B, Schoelinck C, Jondelius U, Littlewood DTJ, Artois T, Huyse T. Problematic barcoding in flatworms: A case-study on monogeneans and rhabdocoels (Platyhelminthes). Zookeys 2013:355-79. [PMID: 24453567 PMCID: PMC3890687 DOI: 10.3897/zookeys.365.5776] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 12/02/2013] [Indexed: 11/12/2022] Open
Abstract
Some taxonomic groups are less amenable to mitochondrial DNA barcoding than others. Due to the paucity of molecular information of understudied groups and the huge molecular diversity within flatworms, primer design has been hampered. Indeed, all attempts to develop universal flatworm-specific COI markers have failed so far. We demonstrate how high molecular variability and contamination problems limit the possibilities for barcoding using standard COI-based protocols in flatworms. As a consequence, molecular identification methods often rely on other widely applicable markers. In the case of Monogenea, a very diverse group of platyhelminth parasites, and Rhabdocoela, representing one-fourth of all free-living flatworm taxa, this has led to a relatively high availability of nuclear ITS and 18S/28S rDNA sequences on GenBank. In a comparison of the effectiveness in species assignment we conclude that mitochondrial and nuclear ribosomal markers perform equally well. In case intraspecific information is needed, rDNA sequences can guide the selection of the appropriate (i.e. taxon-specific) COI primers if available.
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Affiliation(s)
- Maarten P M Vanhove
- Laboratory of Biodiversity and Evolutionary Genomics, Department of Biology, University of Leuven, Leuven, Belgium ; Present address: Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Bart Tessens
- Research Group Zoology: Biodiversity & Toxicology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | | | - Ulf Jondelius
- Department of Invertebrate Zoology, Swedish Museum of Natural History, Stockholm, Sweden
| | - D Tim J Littlewood
- Division of Parasites & Vectors, Department of Life Sciences, Natural History Museum, London, United Kingdom
| | - Tom Artois
- Research Group Zoology: Biodiversity & Toxicology, Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Tine Huyse
- Laboratory of Biodiversity and Evolutionary Genomics, Department of Biology, University of Leuven, Leuven, Belgium ; Department of Biology, Royal Museum for Central Africa, Tervuren, Belgium
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Ruane S, Bryson RW, Pyron RA, Burbrink FT. Coalescent Species Delimitation in Milksnakes (Genus Lampropeltis) and Impacts on Phylogenetic Comparative Analyses. Syst Biol 2013; 63:231-50. [DOI: 10.1093/sysbio/syt099] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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The Gyrodactylus (Monogenea, Gyrodactylidae) parasite fauna of freshwater sand gobies (Teleostei, Gobioidei) in their centre of endemism, with description of seven new species. Parasitol Res 2013; 113:653-68. [PMID: 24288050 DOI: 10.1007/s00436-013-3693-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 11/07/2013] [Indexed: 10/26/2022]
Abstract
While Gobioidei comprises showcases of (adaptive) radiation, the scientific interest they yielded did not ensure full understanding of goby biodiversity. Even in a well-studied region like Europe, wide knowledge gaps remain. Sand gobies represent one of the few clades whose monogenean parasites have been thoroughly studied. However, in the Balkans, part of the sand gobies' centre of endemism, these parasites were unstudied. We focus on Greek and Croatian freshwater gobies. From five sand goby species, the first parasites are reported, describing seven new Gyrodactylus species. Economidichthys pygmaeus harbours Gyrodactylus benedeni sp. n. and Gyrodactylus dorlodoti sp. n. Its congener E. trichonis hosts G. meelkopae sp. n. Knipowitschia milleri was found to host G. charon sp. n., K. thessala is infected by G. bios sp. n., and K. croatica by G. douglasadamsi sp. n. and G. hellemansi sp. n. Gyrodactylus bubyri was found on its type host K. caucasica. A diverse parasite fauna is expected for a region known for its biodiversity and endemism. The contribution of parasites to species richness in such hotspots is overlooked. The observed species richness per host is rather low compared to the better-studied eastern Atlantic sand gobies. Host vicariance is considered to mediate parasite specificity in this fauna. Some new flatworm species display unique morphological features, such as the remarkable size of the marginal hook sickle proper compared to its foot in the Economidichthys parasites, or a characteristically kinked marginal hook sickle in G. douglasadamsi sp. n. These features reflect their hosts' endemism in the Balkans.
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16
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Molecular phylogenetics of Gobioidei and phylogenetic placement of European gobies. Mol Phylogenet Evol 2013; 69:619-33. [PMID: 23911892 DOI: 10.1016/j.ympev.2013.07.017] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 07/17/2013] [Accepted: 07/20/2013] [Indexed: 11/21/2022]
Abstract
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.
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MALAVASI STEFANO, GKENAS CHRISTOS, LEONARDOS IOANNIS, TORRICELLI PATRIZIA, MCLENNAN DEBORAHA. The phylogeny of a reduced ‘sand goby’ group based on behavioural and life history characters. Zool J Linn Soc 2012. [DOI: 10.1111/j.1096-3642.2012.00832.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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