DOCSLIB.ORG

Shelf-Break Areas with Leptometra Phalangium (Echinodermata: Crinoidea)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Shelf-Break Areas with Leptometra Phalangium (Echinodermata: Crinoidea) Marine Biology (2004) 145: 1129–1142 DOI 10.1007/s00227-004-1405-8 RESEARCH ARTICLE F. Colloca Æ P. Carpentieri Æ E. Balestri G. D. Ardizzone A critical habitat for Mediterranean fish resources: shelf-break areas with Leptometra phalangium (Echinodermata: Crinoidea) Received: 8 October 2003 / Accepted: 10 May 2004 / Published online: 3 July 2004 Ó Springer-Verlag 2004 Abstract This paper considers the potential role of the structure of species occurring on the shelf break showed crinoid Leptometra phalangium as an indicator of highly that for some of them the selection of this area is related productive areas along the shelf break that can sustain to specific phases of their life cycle. Significant highest large biomasses of benthopelagic fish and recruits. The abundance of recruits and juveniles was observed for structure of fish assemblages in the central Mediterra- Merluccius merluccius, Helicolenus dactylopterus, Phycis nean Sea (central-western coast of Italy), analysed on blennoides, Parapenaeus longirostris and Capros aper in the basis of surveys carried out in summer and autumn at least one of the two seasons. Similarly, an increased from 1997 to 2001, revealed the presence of a well-de- abundance of spawners of red mullet Mullus barbatus fined group of species on the shelf break. This area, and four-spotted megrim Lepidorhombus boscii was ob- occurring at a depth of between 120 and 170 m, is served on the shelf break. Results of this study may have characterised by detritic organogenic sediments colon- important consequences for management of fish stocks ised by the crinoid L. phalangium, a suspension-feeding and assemblages in the central Mediterranean. The co- macro-epibenthic species confined in the Mediterranean occurrence of high densities of L. phalangium and ben- to the shelf-break area. Its abundance in the studied area thopelagic fish, occurring mainly with juveniles and can reach 12–15 ind. m)2. A total of 121 species spawners, strongly indicates a potential role of L. pha- belonging to 66 families of demersal organisms (crusta- langium as an indicator of highly productive areas cean decapods and stomatopods, cephalopods, selaceens around the shelf break. Such areas appear to play a and teleosteens) were caught at shelf-break stations from major role in the production of some of the most September to October. The species which typified the abundant and commercially important fish species, such assemblage were the fishes Trisopterus minutus capel- as the Mediterranean hake and red mullet. anus, Merluccius merluccius, Glossanodon leioglossus, Argentina sphyraena, Capros aper, Macroramphos scol- opax and Lepidotrigla cavillone, the crustacean decapod Parapenaeus longirostris and the cephalopods Illex coindetii and Todaropsis eblanae. Detritic shelf-break Introduction stations showed a higher abundance of demersal organisms than stations distributed on muddy bottoms The shelf break is a high-energy zone as a result of the in the same depth range (100–200 m). Such differences interplay of tides, storm waves, breaking internal waves appeared to be significant in September–October, when and bottom turbulence produced by fronts separating a clear increase in benthopelagic zooplanktivorus spe- shelf and slope waters (Herman 1972; Vanney and cies, such as Glossanodon leioglossus, Trachurus trachu- Stanley 1983). Intermittent mixing events may generate rus, Trachurus picturatus, was found. The length increased ammonium and nitrate concentrations in wa- ter columns, which, in turn, increase euphotic zone production (Soetaert et al. 2001). An enhanced phyto- Communicated by R. Cattaneo-Vietti, Genova plankton and zooplankton biomass associated with F. Colloca (&) Æ P. Carpentieri Æ E. Balestri Æ G. D. Ardizzone shelf-break fronts has been observed (see Mann and Department of Animal and Human Biology, Lazier 1996). The high production of plankton at the University of Rome ‘‘La Sapienza’’, V. le dell’Universita` shelf break makes it an important feeding ground for 32, 00185 Rome, Italy E-mail: [email protected] large shoals of fish (Williams et al. 2001), flocks of Tel.: +39-6-49914763 oceanic birds (Skov and Durinck 1998) and cetaceans Fax: +39-6-4958259 (Hain et al. 1985). 1130 Studies of communities in the Mediterranean shelf in the sensitive phases (recruitment, spawning, post- break have mostly focused on benthic assemblages in spawning) of the life cycle of demersal fish species. relation to sediment characteristics, which are muddy with a component of relict detritic sediments produced during Pleistocenic (20,000–8,000 years ago) fluctua- Materials and methods tions in sea levels (Pe´re` s and Picard 1964; Reyss 1973). Both eastern Atlantic and Mediterranean benthic com- Study area munities on the shelf break are characterised by high concentrations of macro-epibenthic filter-feeding and The area investigated covers 15,289 km2 off the central suspension-feeding organisms (Flach et al. 1998; Kal- western coasts of Italy (central Mediterranean Sea) be- lianotis et al. 2000). In the Mediterranean, where a well- tween 10 and 700 m depth (Fig. 1). The continental shelf defined benthic community on the shelf break has been extends up to 120–150 m depth between 15 and 30 km described (DL, Pe´re` s and Picard 1964), the dominant from the shoreline. The shelf break is characterised by megabenthic species is generally the crinoid Leptometra detritic organogenic sediments, with locally high abun- phalangium. This species is confined to the restricted dances of the crinoid Leptometra phalangium.This depth range that corresponds to the shelf-break and organism has a patchy distribution with a maximum canyon-head areas under bottom currents, where it can abundance of 12–15 ind. m)2 (Colloca 2003). ) reach a density of 30–50 ind. m 2 (Laborel et al.1961; Environmental conditions along the continental shelf Vaissie` re and Carpine 1964; Reyss and Soyer 1965; are heterogeneous due to the presence of both eutrophic Bourcier and Zibrowius 1973; Reyss 1973, 1974; Kal- areas, like those affected by the Tiber River’s waters lianotis et al. 2000). In the Atlantic Ocean, the vicariant (central Latium), and oligotrophic areas around the species Leptometra celtica characterises the shelf break Pontine Islands, lagoons connected to the sea, phaner- along the northwest Spanish and southwest Irish coasts ogam meadows, rocky and sandy shores. (Lavaleye et al. 2002). The limit between the upper and middle slopes ranges The impact of towed gear is particularly heavy on between 400 and 500 m depth (Carpine 1970; Relini these beds, both on L. phalangium, a fragile organism et al. 1986). The temperature down to 120–200 m depth that is easily destroyed by trawling, and on other epi- is generally constant at about 13°C (Ifremer 1997). A benthic organisms that have shown reduced abundance layer of Levantine intermediate water, characterised by in trawled areas (Smith et al. 2000). maximal salinity, flows anticlockwise along the slope Several studies have shown a relationship between the between 250 and 700 m depth (Serravall and Cristofalo distribution of macro-epibenthic and of demersal fish 1999). assemblages in the Mediterranean (Gaertner et al. 1999; Colloca et al. 2003a), indicating that the negative effects of fishing on the benthic community may be mirrored in Trawl survey data the distribution and abundance of fish species. The role played by the shelf break in the distribution Data were collected during eight trawl surveys, as part and dynamics of demersal species is very poorly under- of the MEDITS and GRUND projects, conducted, stood in the Mediterranean, even though previous respectively, in July and September–October from 1997 studies have revealed the occurrence of a defined fish to 2001. Both projects used a randomised, stratified assemblage on deeper shelf/shallow slope bottoms (Ga- sampling design based on depth (five bathymetric strata: ertner et al. 1999; Biagi et al. 2002; Colloca et al. 2003a). 10–50, 51–100, 101–200, 201–500 and 501–700 m) and It is worth stressing that this assemblage is characterised area. The depth limits were adopted to best cover the by high concentrations of juveniles of important com- distribution areas of the mainly exploited, or potentially mercially exploited species such as European hake exploitable, species. Locations of stations were selected (Merluccius merluccius). randomly within each stratum at the beginning of the The main aim of this paper is to evaluate the poten- projects (1996). The same stations, 61 for GRUND and tial role of L. phalangium beds as indicators of highly 46 for MEDITS, were sampled in the following years productive areas along the shelf break, which can sustain (see Relini 1998; Bertrand et al. 2002). Ten stations in all large biomasses of benthopelagic fish and recruits. For were located on detritic bottoms, with L. phalangium this purpose, the abundance and population structure of along the shelf break (crinoid stations). demersal species, including European hake, red mullet There were some differences between the two projects (Mullus barbatus), John dory (Zeus faber), poor cod as regards the vessels and equipment used for the sur- (Trisopterus minutus capelanus), horse mackerel (Tra- veys. The GRUND project was conducted using a vessel churus trachurus) and deep-water pink shrimp (Parape- (60 tons and 600 HP) equipped with an Italian otter naeus longirostris) were analysed by comparing data trawl mounting a 40-m head rope, a 40-mm ground obtained during stratified trawl surveys both on and off chain and 40- and 30-mm stretched mesh in the wing and the shelf break. cod-end, respectively. MEDITS was carried out from a The conservation of shelf-break fish assemblages is 88-ton, 800-HP vessel using an otter trawl net with a 40- also discussed with a view to reducing the fish mortality m head rope, an 8-m wing spread and a 20-mm mesh size 1131 Fig. 1 Trawl stations on the continental shelf and upper slope of the central western coasts of Italy (central Mediterranean Sea) (open circles Leptometra phalangium stations on the shelf break) at the cod-end (Fiorentini et al.
Load more

Recommended publications
  • The Vocalisation of the John Dory, Zeus Faber
    RESEARCH ARTICLE Barking mad: The vocalisation of the John Dory, Zeus faber 1 1 1,2 Craig A. RadfordID *, Rosalyn L. PutlandID , Allen F. Mensinger 1 Leigh Marine Laboratory, Institute of Marine Science, University of Auckland, Warkworth, New Zealand, 2 Biology Department, University of Minnesota Duluth, Duluth, MN, United States of America * [email protected] a1111111111 a1111111111 Abstract a1111111111 a1111111111 Studies on the behavioural function of sounds are very rare within heterospecific interac- a1111111111 tions. John Dory (Zeus faber) is a solitary, predatory fish that produces sound when cap- tured, but has not been documented to vocalize under natural conditions (i.e. in the wild). The present study provides the first in-situ recordings of John Dory vocalisations and corre- lates them to behavioural response of snapper (Pagrus auratus) a common species found OPEN ACCESS through New Zealand. Vocalisations or `barks', ranged between 200±600 Hz, with a peak frequency of 312 10 Hz and averaged 139 4 milliseconds in length. Baited underwater Citation: Radford CA, Putland RL, Mensinger AF ± ± (2018) Barking mad: The vocalisation of the John video (BUV) equipped with hydrophones determined that under natural conditions a John Dory, Zeus faber. PLoS ONE 13(10): e0204647. Dory vocalization induced an escape response in snapper present, causing them to exit the https://doi.org/10.1371/journal.pone.0204647 area opposite to the position of the John Dory. We speculate that the John Dory vocalisation Editor: Dennis M. Higgs, University of Windsor, may be used for territorial display towards both conspecifics and heterospecifics, asserting CANADA dominance in the area or heightening predatory status.
    [Show full text]
  • Demersal and Epibenthic Assemblages of Trawlable Grounds in the Northern Alboran Sea (Western Mediterranean)
    SCIENTIA MARINA 71(3) September 2007, 513-524, Barcelona (Spain) ISSN: 0214-8358 Demersal and epibenthic assemblages of trawlable grounds in the northern Alboran Sea (western Mediterranean) ESTHER ABAD 1, IZASKUN PRECIADO 1, ALBERTO SERRANO 1 and JORGE BARO 2 1 Centro Oceanográfico de Santander, Instituto Español de Oceanografía, Promontorio de San Martín, s/n, P.O. Box 240, 39080 Santander, Spain. E-mail: [email protected] 2 Centro Oceanográfico de Málaga, Instituto Español de Oceanografía, Puerto Pesquero s/n, P.O. Box 285, 29640 Fuengirola, Málaga, Spain SUMMARY: The composition and abundance of megabenthic fauna caught by the commercial trawl fleet in the Alboran Sea were studied. A total of 28 hauls were carried out at depths ranging from 50 to 640 m. As a result of a hierarchical clas- sification analysis four assemblages were detected: (1) the outer shelf group (50-150 m), characterised by Octopus vulgaris and Cepola macrophthalma; (2) the upper slope group (151-350 m), characterised by Micromesistius poutassou, with Plesionika heterocarpus and Parapenaeus longirostris as secondary species; (3) the middle slope group (351-640 m), char- acterised by M. poutassou, Nephrops norvegicus and Caelorhincus caelorhincus, and (4) the small seamount Seco de los Olivos (310-360 m), characterised by M. poutassou, Helicolenus dactylopterus and Gadiculus argenteus, together with Chlorophthalmus agassizi, Stichopus regalis and Palinurus mauritanicus. The results also revealed significantly higher abundances in the Seco de los Olivos seamount, probably related to a higher food availability caused by strong localised cur- rents and upwellings that enhanced primary production. Although depth proved to be the main structuring factor, others such as sediment type and food availability also appeared to be important.
    [Show full text]
  • Supplementary Tales
    Metabarcoding reveals different zooplankton communities in northern and southern areas of the North Sea Jan Niklas Macher, Berry B. van der Hoorn, Katja T. C. A. Peijnenburg, Lodewijk van Walraven, Willem Renema Supplementary tables 1-5 Table S1: Sampling stations and recorded abiotic variables recorded during the NICO 10 expedition from the Dutch Coast to the Shetland Islands Sampling site name Coordinates (°N, °E) Mean remperature (°C) Mean salinity (PSU) Depth (m) S74 59.416510, 0.499900 8.2 35.1 134 S37 58.1855556, 0.5016667 8.7 35.1 89 S93 57.36046, 0.57784 7.8 34.8 84 S22 56.5866667, 0.6905556 8.3 34.9 220 S109 56.06489, 1.59652 8.7 35 79 S130 55.62157, 2.38651 7.8 34.8 73 S156 54.88581, 3.69192 8.3 34.6 41 S176 54.41489, 4.04154 9.6 34.6 43 S203 53.76851, 4.76715 11.8 34.5 34 Table S2: Species list and read number per sampling site Class Order Family Genus Species S22 S37 S74 S93 S109 S130 S156 S176 S203 Copepoda Calanoida Acartiidae Acartia Acartia clausi 0 0 0 72 0 170 15 630 3995 Copepoda Calanoida Acartiidae Acartia Acartia tonsa 0 0 0 0 0 0 0 0 23 Hydrozoa Trachymedusae Rhopalonematidae Aglantha Aglantha digitale 0 0 0 0 1870 117 420 629 0 Actinopterygii Trachiniformes Ammodytidae Ammodytes Ammodytes marinus 0 0 0 0 0 263 0 35 0 Copepoda Harpacticoida Miraciidae Amphiascopsis Amphiascopsis cinctus 344 0 0 992 2477 2500 9574 8947 0 Ophiuroidea Amphilepidida Amphiuridae Amphiura Amphiura filiformis 0 0 0 0 219 0 0 1470 63233 Copepoda Calanoida Pontellidae Anomalocera Anomalocera patersoni 0 0 586 0 0 0 0 0 0 Bivalvia Venerida
    [Show full text]
  • Skates and Rays Diversity, Exploration and Conservation – Case-Study of the Thornback Ray, Raja Clavata
    UNIVERSIDADE DE LISBOA FACULDADE DE CIÊNCIAS DEPARTAMENTO DE BIOLOGIA ANIMAL SKATES AND RAYS DIVERSITY, EXPLORATION AND CONSERVATION – CASE-STUDY OF THE THORNBACK RAY, RAJA CLAVATA Bárbara Marques Serra Pereira Doutoramento em Ciências do Mar 2010 UNIVERSIDADE DE LISBOA FACULDADE DE CIÊNCIAS DEPARTAMENTO DE BIOLOGIA ANIMAL SKATES AND RAYS DIVERSITY, EXPLORATION AND CONSERVATION – CASE-STUDY OF THE THORNBACK RAY, RAJA CLAVATA Bárbara Marques Serra Pereira Tese orientada por Professor Auxiliar com Agregação Leonel Serrano Gordo e Investigadora Auxiliar Ivone Figueiredo Doutoramento em Ciências do Mar 2010 The research reported in this thesis was carried out at the Instituto de Investigação das Pescas e do Mar (IPIMAR - INRB), Unidade de Recursos Marinhos e Sustentabilidade. This research was funded by Fundação para a Ciência e a Tecnologia (FCT) through a PhD grant (SFRH/BD/23777/2005) and the research project EU Data Collection/DCR (PNAB). Skates and rays diversity, exploration and conservation | Table of Contents Table of Contents List of Figures ............................................................................................................................. i List of Tables ............................................................................................................................. v List of Abbreviations ............................................................................................................. viii Agradecimentos ........................................................................................................................
    [Show full text]
  • Low Plastic Ingestion Rate in Atlantic
    bioRxiv preprint doi: https://doi.org/10.1101/080986; this version posted October 14, 2016. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 Low plastic ingestion rate in Atlantic Cod (Gadus morhua) from 2 Newfoundland destined for human consumption collected 3 through citizen science methods 4 5 Max Liboiron*1,2, 3, 5, France Liboiron4, 5, Emily Wells4, 5, Natalie Richárd2, 5, Alexander Zahara2, 5, Charles 6 Mather2, 5, Hillary Bradshaw2,5, Judyannet Murichi1, 5 7 8 1 Department of Sociology, Memorial University of Newfoundland, St. John's, Newfoundland, A1C 5S7, 9 Canada 10 2 Department of Geography, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 11 3X9, Canada 12 3 Program in Environmental Sciences, Memorial University of Newfoundland, St. John's, Newfoundland, 13 A1C 5S7, Canada 14 4 Department of Biology, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X9, 15 Canada 16 5 Civic Laboratory for Environmental Action Research (CLEAR), Memorial University of Newfoundland, 17 St. John's, Newfoundland, A1B 3X9, Canada 18 19 20 *Corresponding author. 21 E-mail: [email protected] 22 Address: AA4057, Memorial University of Newfoundland, 230 Elizabeth Avenue, St. John's, NL, A1C 23 5S7 24 25 Abstract 26 27 Marine microplastics are a contaminant of concern because their small size allows ingestion by a 28 wide range of marine life. Using citizen science during the Newfoundland recreational cod 29 fishery, we sampled 205 Atlantic cod (Gadus morhua) destined for human consumption and 30 found that 5 had eaten plastic, an ingestion prevalence rate of 2.4%.
    [Show full text]
  • A Framework of Ichthyofaunal Ecostratigraphy of the Oligocene–Early Miocene Strata of the Polish Outer Carpathian Basin
    Annales Societatis Geologorum Poloniae (2006), vol. 76: 1–111. A FRAMEWORK OF ICHTHYOFAUNAL ECOSTRATIGRAPHY OF THE OLIGOCENE–EARLY MIOCENE STRATA OF THE POLISH OUTER CARPATHIAN BASIN Janusz KOTLARCZYK1, Anna JERZMAÑSKA2, Ewa ŒWIDNICKA2 & Teresa WISZNIOWSKA2 1 Department of General and Mathematical Geology, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland 2 Department of Palaeozoology, Institute of Zoology, University of Wroc³aw, Sienkiewicza, 21, 50-335 Wroc³aw, Poland Kotlarczyk, J., Jerzmañska, A., Œwidnicka, E. & Wiszniowska, T., 2006. A framework of ichthyofaunal ecostrati- graphy of the Oligocene–Early Miocene strata of the Polish Outer Carpathian basin. Annales Societatis Geologorum Poloniae, 76: 1–111. Abstract: The paper presents the results of an analysis of ichthyofaunal variability throughout the section of the Menilite-Krosno Series (MKS) in the Outer Carpathians of Poland. The studied tanathocoenoses were formed at the bottom of a more than 2,000 m deep northern basin of the Tethys, being largely represented by the continental rise and bottoms of its narrow furrows, and – to a lesser degree – the continental slope and slopes of a submarine high. Lateral variability of statististically representative assemblages of tanathocoenoses hosted in thin, isochro- nous horizons is interpreted as a result of both local changes of ichthyocoenoses and the influence of post-mortem relocation of fishes that mainly dwelled the shelf and upper continental slope. Vertical variability, in turn, is considered as a resulting from changeable conditions of the ecological environment, the input and outflow of taxa whose evolution proceeded in the Indo-Pacific area, and the species extinction. Changeability of ichthyofauna within a ca.
    [Show full text]
  • Correlated Evolution of Sex Allocation and Mating System in Wrasses and Parrotfishes
    bioRxiv preprint doi: https://doi.org/10.1101/665638; this version posted June 10, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC 4.0 International license. Title Correlated evolution of sex allocation and mating system in wrasses and parrotfishes Authors Jennifer R. Hodge,1,* Francesco Santini,1 Peter C. Wainwright1 1. Department of Evolution and Ecology, University of California, Davis, Davis, California 95616 * Present address: Animal Evolutionary Ecology, Institute of Evolution and Ecology, Department of Biology, University of Tübingen, Tübingen, Germany 72076 Keywords Labridae; polygynous mating; phylogenetic comparative method; protogynous hermaphroditism; size-advantage model; Teleostei 1 bioRxiv preprint doi: https://doi.org/10.1101/665638; this version posted June 10, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC 4.0 International license. Abstract In accordance with predictions of the size-advantage model, comparative evidence confirms that protogynous sex change is lost when mating behavior is characterized by weak size advantage. However, we lack comparative evidence supporting the adaptive significance of sex change. Specifically, it remains unclear whether increasing male size advantage induces transitions to protogynous sex change across species, as it can within species. We show that in wrasses and parrotfishes (Labridae), the evolution of protogynous sex change is correlated with polygynous mating, and that the degree of male size advantage expressed by polygynous species influences transitions between different types of protogynous sex change.
    [Show full text]
  • DEEP SEA LEBANON RESULTS of the 2016 EXPEDITION EXPLORING SUBMARINE CANYONS Towards Deep-Sea Conservation in Lebanon Project
    DEEP SEA LEBANON RESULTS OF THE 2016 EXPEDITION EXPLORING SUBMARINE CANYONS Towards Deep-Sea Conservation in Lebanon Project March 2018 DEEP SEA LEBANON RESULTS OF THE 2016 EXPEDITION EXPLORING SUBMARINE CANYONS Towards Deep-Sea Conservation in Lebanon Project Citation: Aguilar, R., García, S., Perry, A.L., Alvarez, H., Blanco, J., Bitar, G. 2018. 2016 Deep-sea Lebanon Expedition: Exploring Submarine Canyons. Oceana, Madrid. 94 p. DOI: 10.31230/osf.io/34cb9 Based on an official request from Lebanon’s Ministry of Environment back in 2013, Oceana has planned and carried out an expedition to survey Lebanese deep-sea canyons and escarpments. Cover: Cerianthus membranaceus © OCEANA All photos are © OCEANA Index 06 Introduction 11 Methods 16 Results 44 Areas 12 Rov surveys 16 Habitat types 44 Tarablus/Batroun 14 Infaunal surveys 16 Coralligenous habitat 44 Jounieh 14 Oceanographic and rhodolith/maërl 45 St. George beds measurements 46 Beirut 19 Sandy bottoms 15 Data analyses 46 Sayniq 15 Collaborations 20 Sandy-muddy bottoms 20 Rocky bottoms 22 Canyon heads 22 Bathyal muds 24 Species 27 Fishes 29 Crustaceans 30 Echinoderms 31 Cnidarians 36 Sponges 38 Molluscs 40 Bryozoans 40 Brachiopods 42 Tunicates 42 Annelids 42 Foraminifera 42 Algae | Deep sea Lebanon OCEANA 47 Human 50 Discussion and 68 Annex 1 85 Annex 2 impacts conclusions 68 Table A1. List of 85 Methodology for 47 Marine litter 51 Main expedition species identified assesing relative 49 Fisheries findings 84 Table A2. List conservation interest of 49 Other observations 52 Key community of threatened types and their species identified survey areas ecological importanc 84 Figure A1.
    [Show full text]
  • Inferred from Mitochondrial 16S Rdna Sequence and Morphological Data
    J. Black Sea/Mediterranean Environment Vol. 17(1): 14-31 (2011) The systematic status of the Mediterranean Spicara species (Centracanthidae) inferred from mitochondrial 16S rDNA sequence and morphological data Cemal Turan* Fisheries Genetics Laboratory, Faculty of Fisheries, Mustafa Kemal University, Iskenderun, Hatay, Turkey. * Corresponding author: [email protected] Abstract The mitochondrial 16S ribosomal DNA together with morphological data were used to elucidate monophyly of the family Centracanthidae and interrelationships of Spicara and Centracanthus genera, including four species, Spicara maena, Spicara flexuosa, Spicara smaris and Centracanthus cirrus. Examination of the gene revealed a moderate amount of thymine and abundance of adenine. The 16S rDNA dataset contained 92 variable and 69 parsimony informative sites with a mean nucleotide diversity of 0.099. Haplotype diversity was found to be 0.71. No genetic differences were observed between S. maena and S. smaris, and the genetic divergence between S. flexuosa and both S. maena and S. smaris was found to be 0.005. The intergeneric divergence was found to be very high (0.237) between S. alta and C. cirrus. For the other Spicara species, intergeneric divergence ranged from 0.170 between C. cirrus and both S. maena and S. smaris to 0.176 between C. cirrus and S. flexuosa. Minumum evolution, neighbor joining and parsimony trees revealed same tree topologies, and the monophyly of the genus Spicara was not supported. S. maena and S. smaris clustered together and showed close relationship and S. flexuosa was nodded with this group. Therefore S. maena was found to be more closely related to S. smaris rather than S.
    [Show full text]
  • Updated Checklist of Marine Fishes (Chordata: Craniata) from Portugal and the Proposed Extension of the Portuguese Continental Shelf
    European Journal of Taxonomy 73: 1-73 ISSN 2118-9773 http://dx.doi.org/10.5852/ejt.2014.73 www.europeanjournaloftaxonomy.eu 2014 · Carneiro M. et al. This work is licensed under a Creative Commons Attribution 3.0 License. Monograph urn:lsid:zoobank.org:pub:9A5F217D-8E7B-448A-9CAB-2CCC9CC6F857 Updated checklist of marine fishes (Chordata: Craniata) from Portugal and the proposed extension of the Portuguese continental shelf Miguel CARNEIRO1,5, Rogélia MARTINS2,6, Monica LANDI*,3,7 & Filipe O. COSTA4,8 1,2 DIV-RP (Modelling and Management Fishery Resources Division), Instituto Português do Mar e da Atmosfera, Av. Brasilia 1449-006 Lisboa, Portugal. E-mail: [email protected], [email protected] 3,4 CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal. E-mail: [email protected], [email protected] * corresponding author: [email protected] 5 urn:lsid:zoobank.org:author:90A98A50-327E-4648-9DCE-75709C7A2472 6 urn:lsid:zoobank.org:author:1EB6DE00-9E91-407C-B7C4-34F31F29FD88 7 urn:lsid:zoobank.org:author:6D3AC760-77F2-4CFA-B5C7-665CB07F4CEB 8 urn:lsid:zoobank.org:author:48E53CF3-71C8-403C-BECD-10B20B3C15B4 Abstract. The study of the Portuguese marine ichthyofauna has a long historical tradition, rooted back in the 18th Century. Here we present an annotated checklist of the marine fishes from Portuguese waters, including the area encompassed by the proposed extension of the Portuguese continental shelf and the Economic Exclusive Zone (EEZ). The list is based on historical literature records and taxon occurrence data obtained from natural history collections, together with new revisions and occurrences.
    [Show full text]
  • Title the ZOOGEOGRAPHICAL ASPECTS of the JAPAN
    THE ZOOGEOGRAPHICAL ASPECTS OF THE JAPAN Title SEA -PART V- Author(s) Nishimura, Saburo PUBLICATIONS OF THE SETO MARINE BIOLOGICAL Citation LABORATORY (1969), 17(2): 67-142 Issue Date 1969-09-30 URL http://hdl.handle.net/2433/175589 Right Type Departmental Bulletin Paper Textversion publisher Kyoto University THE ZOOGEOGRAPHICAL ASPECTS OF THE JAPAN SEA 1 PART V ) SABURO NISHIMURA Seta Marine Biological Laboratory, Sirahama With Text-figures 31-48 CONTENTS Page 4. Distribution of Animal Populations in Relation to the Hydrography of the Japan Sea ...................·............................................................................................... 67 4.1. The Oceanographic Structure and Animal Communities . ....................................... 68 4.2. Movement and Transformation of "Vater Masses and the Migrations of Animal Populations . 82 4.2.1. Winter to Spring Aspects . .. .. .. .. 82 4.2.2. Summer Aspects .... .... ............. ... .. ....... .... ....... ....... ................. ............. .. .... 92 4.2.3. Autumnal Aspects . .. .. .. .. 99 4.2.4. Returning to the Winter Aspects .................................................................. 101 5. Characteristics in Biological Production in the Japan Sea . I 05 5.1. Characteristics in Plankton Production ................................................................ 105 5.2. Biological Seasons and Bioclimatic Regions .......................................................... II 0 5.3. Fate of Immigrant Southern and Northern Populations .........................................
    [Show full text]
  • Otolith Atlas for the Western Mediterranean, North and Central Eastern Atlantic
    SCIENTIA MARINA 72S1 July 2008, 7-198, Barcelona (Spain) ISSN: 0214-8358 Otolith atlas for the western Mediterranean, north and central eastern Atlantic VICTOR M. TUSET 1, ANTONI LOMBARTE 2 and CARLOS A. ASSIS 3 1 Instituto Canario de Ciencias Marinas, Departamento de Biología Pesquera, P.O. Box. 56, E-35200 Telde (Las Palmas), Canary Islands, Spain. E-mail: [email protected] 2 Institut de Ciències del Mar-CSIC, Departament de Recursos Marins Renovables, Passeig Marítim 37-49, Barcelona 08003, Catalonia, Spain. 3 Instituto de Oceanografia e Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal. SUMMARY: The sagittal otolith of 348 species, belonging to 99 families and 22 orders of marine Teleostean fishes from the north and central eastern Atlantic and western Mediterranean were described using morphological and morphometric characters. The morphological descriptions were based on the otolith shape, outline and sulcus acusticus features. The mor- phometric parameters determined were otolith length (OL, mm), height (OH, mm), perimeter (P; mm) and area (A; mm2) and were expressed in terms of shape indices as circularity (P2/A), rectangularity (A/(OL×OH)), aspect ratio (OH/OL; %) and OL/fish size. The present Atlas provides information that complements the characterization of some ichthyologic taxa. In addition, it constitutes an important instrument for species identification using sagittal otoliths collected in fossiliferous layers, in archaeological sites or in feeding remains of bony fish predators. Keywords: otolith, sagitta, morphology, morphometry, western Mediterranean, north eastern Atlantic, central eastern Atlantic. RESUMEN: Otolitos de peces del mediterráneo occidental y del atlántico central y nororiental.
    [Show full text]