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Fisheries Centre
Fisheries Centre The University of British Columbia Working Paper Series Working Paper #2015 - 80 Reconstruction of Syria’s fisheries catches from 1950-2010: Signs of overexploitation Aylin Ulman, Adib Saad, Kyrstn Zylich, Daniel Pauly and Dirk Zeller Year: 2015 Email: [email protected] This working paper is made available by the Fisheries Centre, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada. Reconstruction of Syria’s fisheries catches from 1950-2010: Signs of overexploitation Aylin Ulmana, Adib Saadb, Kyrstn Zylicha, Daniel Paulya, Dirk Zellera a Sea Around Us, Fisheries Centre, University of British Columbia, 2202 Main Mall, Vancouver, BC, V6T 1Z4, Canada b President of Syrian National Committee for Oceanography, Tishreen University, Faculty of Agriculture, P.O. BOX; 1408, Lattakia, Syria [email protected] (corresponding author); [email protected]; [email protected]; [email protected]; [email protected] ABSTRACT Syria’s total marine fisheries catches were estimated for the 1950-2010 time period using a reconstruction approach which accounted for all fisheries removals, including unreported commercial landings, discards, and recreational and subsistence catches. All unreported estimates were added to the official data, as reported by the Syrian Arab Republic to the United Nation’s Food and Agriculture Organization (FAO). Total reconstructed catch for 1950-2010 was around 170,000 t, which is 78% more than the amount reported by Syria to the FAO as their national catch. The unreported components added over 74,000 t of unreported catches, of which 38,600 t were artisanal landings, 16,000 t industrial landings, over 4,000 t recreational catches, 3,000 t subsistence catches and around 12,000 t were discards. -
The Overwintering of Leaping Mullet (Liza Saliens Risso, 1810) in Fresh Water
846 D. Danabas, T. Altun and F. Celik Bulgarian Journal of Agricultural Science, 17 (No 6) 2011, 846-850 Agricultural Academy THE OVERWINTERING OF LEAPING MULLET (LIZA SALIENS RISSO, 1810) IN FRESH WATER D. DANABAS1, T. ALTUN2 and F. CELIK2 1Tunceli University, Aquaculture Department, Fisheries Faculty, TR 62000, Tunceli, Turkey 2Cukurova University, Aquaculture Department, Fisheries Faculty, TR 01330, Adana, Turkey Abstract DANABAS, D., T. ALTUN and F. CELIK, 2011. The overwintering of leaping mullet (Liza saliens Risso, 1810) in fresh water. Bulg. J. Agric. Sci., 17: 846-850 The overwintering of leaping mullet (Liza saliens Risso, 1810) juveniles (average live weight (W) 5.20±0.02 g and average total length (L) 8.11±0.08 cm) was investigated, in this study. The trial was planned in 2 groups and triplicate. One of the trial groups (the Group 1) comprised of the fish stocked in ponds in the open area and the other group (the Group 2) of the fish stocked in the ponds covered with greenhouses. The average W and L values of the Group 2 after a period of 3 months were 8.70±0.04 g and 9.62±0.05 cm, respectively. The mortality rate (M) in this group was 0.95±0.1 % and 12.86±0.1 % in the Group 1. The difference among the W and L values, specific growth rates (SGR) and M averages obtained from the groups was found to be statistically significant (P<0.05). As a result of this study, it can be recommended that mullet species can be polycultured as a side product with aforementioned species in large scale businesses by efficient use of pond layers. -
Automation of Discrimination Training for Cuttlefish (Mollusca: Cephalopoda)
Keystone Journal of Undergraduate Research 2(1): 15-21. 2014 Automation of Discrimination Training for Cuttlefish (Mollusca: Cephalopoda) Alexander Ryan Hough Faculty Mentor: 1Dr. Jean Geary Boal Department of Biology Millersville University ABSTRACT Cephalopods are common subjects of learning experiments, yet discrimination stimuli are commonly presented by hand, which is both laborious and rife with opportunity for cuing. The following experiment tested the possibility that cuttlefish training could be automated using stimuli presented via computer monitor and food rewards presented in a food hopper. A single adult female common cuttlefish (Sepia officinalis) was trained first to attack a black rectangle (S+) for a live crab prey item and ignore a white right-angle (S-). Stimuli were then presented behind a clear Plexiglas partition and the cuttlefish was rewarded for attacking the Plexiglas in front of the S+. A food hopper was introduced to improve the delivery of the food reward. Finally, stimuli were presented on a computer monitor (CRT) located outside the tank and the cuttlefish was rewarded for attacking the Plexiglas in front of the S+ image. The cuttlefish was successful in learning the discrimination and in transferring learning from the physical objects to the computer images. Results indicate that automation of training using computer presentations of stimuli and automated food rewards is possible for cuttlefish. Keywords: behavior; comparative cognition; flicker fusion; vision The Coleoid cephalopods (octopuses, focused on spatial learning using mazes (e.g. cuttlefishes, and squids) possess the most Cartron et al. 2012). The objective of this advanced nervous system within the phylum study was to assess the feasibility of using Mollusca and the largest brain of any computer-run stimulus presentation and invertebrate (Hanlon and Messenger 1996; automated rewards to study discrimination Hickman et al. -
Relationships Between Size, Weight, Age and Fecundity of the Chelon Auratus and Chelon Saliens (Mugilidae) from the Bulgarian Black Sea Coast
ECOLOGIA BALKANICA 2020, Special Edition 3 pp. 177-184 Relationships between Size, Weight, Age and Fecundity of the Chelon auratus and Chelon saliens (Mugilidae) from the Bulgarian Black Sea Coast Radoslava I. Bekova*, Galerida Raikova-Petrova, Marina D. Panayotova, Bogdan K. Prodanov Institute of Oceanology- Bulgarian Academy of Science, ”Parvi may”40 Str., P.O.Box 152, 9000 Varna, BULGARIA *Corresponding author: [email protected] Abstract. The study is aimed to demonstrate the relationships between the fecundity, length, weight and age of Chelon auratus and Chelon saliens from the Bulgarian Black Sea coast. Absolute fecundity of Ch. auratus varied from 327126 oocytes for age 3 (L-16.0 cm, EW-55 g) to a maximum of 4103879 for age 9 (L-32.4 cm, EW-321g). For Ch. saliens, absolute fecundity varied from 162890 oocytes for age 2 (L-16.9 cm, EW-52 g) to a maximum of 892441 oocytes for age 6 (L-33.7 cm, EW- 315 g). The mean estimated fecundity was 213642 eggs for Ch. auratus and 54882 eggs for Ch. saliens. Relationship between absolute fecundity-weight, fecundity-length was best fitted by the following equations: Ch. auratus - F=9476+10241*W, r2=0.921 and F=-2384206+152333*L, r2=0.906; Ch. saliens: F=215473+1698.7*W, r2=0.916 and F=-457777+36837*L, r2=0.924. The relationship between fecundity and age was best described by the exponential equation: Ch. auratus - F=106354e1.5475, r2=0.969 and Ch. saliens - F=103041e1.1264, r2=0.994. The average weighted relative fecundity was calculated as 492 for Ch. -
Pharaoh Cuttlefish, Sepia Pharaonis, Genome Reveals Unique Reflectin
fmars-08-639670 February 9, 2021 Time: 18:18 # 1 ORIGINAL RESEARCH published: 15 February 2021 doi: 10.3389/fmars.2021.639670 Pharaoh Cuttlefish, Sepia pharaonis, Genome Reveals Unique Reflectin Camouflage Gene Set Weiwei Song1,2, Ronghua Li1,2,3, Yun Zhao1,2, Herve Migaud1,2,3, Chunlin Wang1,2* and Michaël Bekaert3* 1 Key Laboratory of Applied Marine Biotechnology, Ministry of Education, Ningbo University, Ningbo, China, 2 Collaborative Innovation Centre for Zhejiang Marine High-Efficiency and Healthy Aquaculture, Ningbo University, Ningbo, China, 3 Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, United Kingdom Sepia pharaonis, the pharaoh cuttlefish, is a commercially valuable cuttlefish species across the southeast coast of China and an important marine resource for the world fisheries. Research efforts to develop linkage mapping, or marker-assisted selection have been hampered by the absence of a high-quality reference genome. To address this need, we produced a hybrid reference genome of S. pharaonis using a long-read Edited by: platform (Oxford Nanopore Technologies PromethION) to assemble the genome and Andrew Stanley Mount, short-read, high quality technology (Illumina HiSeq X Ten) to correct for sequencing Clemson University, United States errors. The genome was assembled into 5,642 scaffolds with a total length of 4.79 Gb Reviewed by: and a scaffold N of 1.93 Mb. Annotation of the S. pharaonis genome assembly Simo Njabulo Maduna, 50 Norwegian Institute of Bioeconomy identified a total of 51,541 genes, including 12 copies of the reflectin gene, that enable Research (NIBIO), Norway cuttlefish to control their body coloration. -
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. -
TNP SOK 2011 Internet
GARDEN ROUTE NATIONAL PARK : THE TSITSIKAMMA SANP ARKS SECTION STATE OF KNOWLEDGE Contributors: N. Hanekom 1, R.M. Randall 1, D. Bower, A. Riley 2 and N. Kruger 1 1 SANParks Scientific Services, Garden Route (Rondevlei Office), PO Box 176, Sedgefield, 6573 2 Knysna National Lakes Area, P.O. Box 314, Knysna, 6570 Most recent update: 10 May 2012 Disclaimer This report has been produced by SANParks to summarise information available on a specific conservation area. Production of the report, in either hard copy or electronic format, does not signify that: the referenced information necessarily reflect the views and policies of SANParks; the referenced information is either correct or accurate; SANParks retains copies of the referenced documents; SANParks will provide second parties with copies of the referenced documents. This standpoint has the premise that (i) reproduction of copywrited material is illegal, (ii) copying of unpublished reports and data produced by an external scientist without the author’s permission is unethical, and (iii) dissemination of unreviewed data or draft documentation is potentially misleading and hence illogical. This report should be cited as: Hanekom N., Randall R.M., Bower, D., Riley, A. & Kruger, N. 2012. Garden Route National Park: The Tsitsikamma Section – State of Knowledge. South African National Parks. TABLE OF CONTENTS 1. INTRODUCTION ...............................................................................................................2 2. ACCOUNT OF AREA........................................................................................................2 -
SSD Fish Monitoring Briefing 2013
The Stingray Shore: The common stingray in the UK and why the New Forest shore is a stronghold. Dr. Georgina Samoluk (on behalf of Dom Longley) January 2020 Common stingray: Dasyatis pastinaca IUCN status: “Data deficient” Declared “Near threatened” in certain areas of the Mediterranean & NE Atlantic. May have disappeared from the Bay of Biscay Several protected sites in the Balearics Difficult species to study – no formal UK research. Range: Anatomy: dorsal Spiracles (breathing inlets) Stingers (usually 2) “Claspers”: male sex organs Pectoral fin / “wing” (thick & muscular compared with other rays) Anatomy: ventral Mouth: teeth form two rough, crushing pads, consisting of modified scales Nostrils Breathing: the primary route for Gill slits water intake is the mouth – the spiracles are less efficient & are used when the ray is at rest on the seabed or is buried with only eyes & spiracles protruding. Skeleton: As an Elasmobranch (sharks, skates, rays & sawfishes) the common stingray has an entirely cartilaginous skeleton. With no swim bladder, buoyancy is aided by the large, oily liver General ecology: Diet: • Crabs, worms, molluscs, fish, cephalopods, carrion Breeding: • Migrate into warm, shallow coastal waters in late spring • Aplacental viviparous: embryos develop inside eggs that remain in the mother's body until they are ready • Two litters of 4-9 “pups” each summer, in warm, shallow coastal waters “The Stingray Shore”: Lymington to Lepe – why such a special habitat? • Shallow • Warm • Sheltered • Food-rich • Relatively unmodified • Relatively undisturbed • Sowley & Park shores fishing hotspots Stingray food Food heaven: …peeler, or “softback” crab (moulting shore crab) Tabloid nonsense: Earliest known depiction of a stingray in Europe; 1553 (they’re common in aboriginal art) Were they known to the medieval inhabitants of the New Forest? Old English name is “Fire Flaire” • Sting is defensive only – muscular tail operates like a scorpion tail, curling over to protect vulnerable back. -
Molecular Phylogeny of Mugilidae (Teleostei: Perciformes) D
The Open Marine Biology Journal, 2008, 2, 29-37 29 Molecular Phylogeny of Mugilidae (Teleostei: Perciformes) D. Aurelle1, R.-M. Barthelemy*,2, J.-P. Quignard3, M. Trabelsi4 and E. Faure2 1UMR 6540 DIMAR, Station Marine d'Endoume, Rue de la Batterie des Lions, 13007 Marseille, France 2LATP, UMR 6632, Evolution Biologique et Modélisation, case 18, Université de Provence, 3 Place Victor Hugo, 13331 Marseille Cedex 3, France 3Laboratoire d’Ichtyologie, Université Montpellier II, 34095 Montpellier, France 4Unité de Biologie marine, Faculté des Sciences, Campus Universitaire, 2092 Manar II, Tunis, Tunisie Abstract: Molecular phylogenetic relationships among five genera and twelve Mugilidae species were investigated us- ing published mitochondrial cytochrome b and 16S rDNA sequences. These analyses suggested the paraphyly of the genus Liza and also that the separation of Liza, Chelon and Oedalechilus might be unnatural. Moreover, all the species of the genus Mugil plus orthologs of Crenimugil crenilabis clustered together; however, molecular analyses suggested possible introgressions in Mugil cephalus and moreover, that fish identified as Mugil curema could correspond to two different species as already shown by karyotypic analyses. Keywords: Mugilidae, grey mullets, mitochondrial DNA, Mugil cephalus, introgression. INTRODUCTION We have focused this study on Mugilid species for which both cytochrome b (cytb) and 16S rDNA mtDNA sequences The family Mugilidae, commonly referred to as grey have been already published. Their geographic distributions mullets, includes several species which have a worldwide are briefly presented here. Oedalechilus labeo is limited to distribution; they inhabit marine, estuarine, and freshwater the Mediterranean Sea and the Moroccan Atlantic coast, environments at all latitudes except the Polar Regions [1]; a whereas, Liza and Chelon inhabit also the Eastern Atlantic few spend all their lives in freshwater [2]. -
Mullets and the Impact of the Environmental Status of Burgas Bay on Their Populations
Annual of Sofia University “St. Kliment Ohridski” Faculty of Biology Book 4 - Scientific Sessions of theFaculty of Biology 2019, volume 104, pp. 62-69 International Scientific Conference “Kliment’s Days”, Sofia 2018 MULLETS AND THE IMPACT OF THE ENVIRONMENTAL STATUS OF BURGAS BAY ON THEIR POPULATIONS RADOSLAVA BEKOVA1*, BOGDAN PRODANOV2, TODOR LAMBEV2 1 – Department of Marine Biology and Ecology, Institute of Oceanology–BAS, Varna, Bulgaria 2 - Department of Coastal Zone Dynamics, Institute of Oceanology–BAS, Varna, Bulgaria *Corresponding author: [email protected] Keywords: environmental assessment, mullets, population parameters, Burgas Bay Abstract: An ecosystem approach has been chosen for an assessment of the status of the populations of three mullet species in Burgas Bay. The complex data requirements for all three species and physicochemical parameters plus sediment are the basis for a comparative assessment of the population status of mullets in Burgas Bay. An assessment of the local anthropogenic impact was also made using hydrochemical analyses. The present study aims to extend and deepen the knowledge of the population- biological characteristics of three species of mullets (Mugil cephalus, Chelon auratus and Chelon saliens) from Burgas Bay by using an ecosystem scale research to determine the degree of contamination with biogenic substances and their impact on the mullet populations. INTRODUCTION Environmental changes due to anthropogenic factors affect all parts of the plant and animal world in inland waters, seas and oceans. The Black Sea is close to the so-called "red line" beyond which ecosystem degradation processes may become irreversible. Commercial fishing is the most unfavorable factor as it directly destroys a significant part of the populations of certain species, which in terms affects all other species that are in strictly specific relationships with the intensely exploited ones. -
Length-Weight Relationship and Growth of the Striped Seabream Lithognathus Mormyrus
International Journal of Fisheries and Aquaculture Research Vol.2, No.2, pp.19-27, June 2016 ___Published by European Centre for Research Training and Development UK (www.eajournals.org) LENGTH-WEIGHT RELATIONSHIP AND GROWTH OF THE STRIPED SEABREAM LITHOGNATHUS MORMYRUS (LINNAEUS, 1758) FROM AL HANEAH FISH LANDING SITE, MEDITERRANEAN SEA, EASTERN LIBYA Ramadan A. S. Ali1, Eyman Faraj Abd Alssalam1, Sayed Mohamed Ali1*, Mohammad El Sayed El Sayed El Mor1,2 and Mohammed El-Mabrouk1 1Department of Zoology, Omar Al-Mukhtar University, Al Bayda, Libya 2Suez Canal University, Department of Marine Biology, Egypt ABSTRACT: Length-weight relationship and growth characteristics of the striped Seabream Lithognathus mormyrus (Linnaeus, 1758) was established using 164 fish collected from Al- Haneah (eastern Libya, Mediterranean Sea) artisanal catch during March to October 2015. The power relationship between total weight (W in gm) and total length (L in cm) for L. ^3.0008 mormyrus was highly isometric: W = 0.0132L (R2 = 0.8291). The length based von Bertalanffy equation of the order: Lt = L∞ (1 – exp (-K (t –t0 ))) was Lt = 30.465 (1 – exp (- 0.159 (t + 2.5435))). The weight based equation was Wt = 374.2523 (1 – exp (- 0.159 (t + 2.5435))) 3.0008. The growth index was low: ɸ = 2.169. KEYWORDS: Striped Seabream, Sand Steenbras, Lithognathus Mormyrus, Length-Weight Relationship, Von Bertalanffy Growth Equation, Mediterranean Sea, Libya INTRODUCTION L. mormyrus, Family: Sparidae, is a medium size fish demersal on sandy bottoms of subtropical littoral waters of the eastern Atlantic Ocean, the Mediterranean sea, the Red sea and the southwestern Indian Ocean. -
Defensive Behaviors of Deep-Sea Squids: Ink Release, Body Patterning, and Arm Autotomy
Defensive Behaviors of Deep-sea Squids: Ink Release, Body Patterning, and Arm Autotomy by Stephanie Lynn Bush A dissertation submitted in partial satisfaction of the requirements for the degree of Doctor of Philosophy in Integrative Biology in the Graduate Division of the University of California, Berkeley Committee in Charge: Professor Roy L. Caldwell, Chair Professor David R. Lindberg Professor George K. Roderick Dr. Bruce H. Robison Fall, 2009 Defensive Behaviors of Deep-sea Squids: Ink Release, Body Patterning, and Arm Autotomy © 2009 by Stephanie Lynn Bush ABSTRACT Defensive Behaviors of Deep-sea Squids: Ink Release, Body Patterning, and Arm Autotomy by Stephanie Lynn Bush Doctor of Philosophy in Integrative Biology University of California, Berkeley Professor Roy L. Caldwell, Chair The deep sea is the largest habitat on Earth and holds the majority of its’ animal biomass. Due to the limitations of observing, capturing and studying these diverse and numerous organisms, little is known about them. The majority of deep-sea species are known only from net-caught specimens, therefore behavioral ecology and functional morphology were assumed. The advent of human operated vehicles (HOVs) and remotely operated vehicles (ROVs) have allowed scientists to make one-of-a-kind observations and test hypotheses about deep-sea organismal biology. Cephalopods are large, soft-bodied molluscs whose defenses center on crypsis. Individuals can rapidly change coloration (for background matching, mimicry, and disruptive coloration), skin texture, body postures, locomotion, and release ink to avoid recognition as prey or escape when camouflage fails. Squids, octopuses, and cuttlefishes rely on these visual defenses in shallow-water environments, but deep-sea cephalopods were thought to perform only a limited number of these behaviors because of their extremely low light surroundings.