DOCSLIB.ORG

Coryphaena Hippurus (Linnaeus, 1758) in Maltese Waters, Central Mediterranean M

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Coryphaena Hippurus (Linnaeus, 1758) in Maltese Waters, Central Mediterranean M Research Article Mediterranean Marine Science Indexed in WoS (Web of Science, ISI Thomson) and SCOPUS The journal is available on line at http://www.medit-mar-sc.net DOI: http://dx.doi.org/10.12681/mms.706 Age, Growth and Reproduction of Coryphaena hippurus (Linnaeus, 1758) in Maltese Waters, Central Mediterranean M. GATT1, M. DIMECH1 and P.J. SCHEMBRI1 1 Department of Biology, University of Malta, Msida MSD 2080, Malta Corresponding author: [email protected] Handling Editor: Kostas Stergiou Received: 24 November 2014; Accepted: 22 January 2015; Published on line: 27 April 2015. Abstract Age, growth and reproduction of the dolphinfishCoryphaena hippurus Linnaeus, 1758 collected from the Central Mediterranean in the period 2004-2010 by the traditional Maltese fish aggregating devices (FAD) and surface longline fisheries were studied. The a and b parameters of the length-weight relationship for fish 11-142 cm fork length (FL) (n = 4042) were determined as a = 0.018 and 0.022 with b = 2.85 and 2.79, for males and females respectively. The counting of annual increments from dorsal spines of >65 cm FL dolphinfish at X25 magnification (n = 47) permitting an age reading resolution in years, and the counting of daily increments from sagittal otoliths of <65 cm FL dolphinfish at X400 magnification (n = 583) permitting an age reading resolution in days, were estimated; the von Bertalanffy growth model applied to these fish gave the following parameters:L∞ = 107.8 cm FL and 120.2 cm FL, and K = 1.9 yr-1 and 1.56 yr-1, for males and females respectively. The maximum age observed was 2 years. Size at 50% maturity for fish 10-131 cm FL (n = 1376) was 58.9 cm FL and 62.5 cm FL for males and females, respectively. The sex ratio for the fish sampled from the FAD fishery (10.5-131 cm FL) was 1:1.54 (M:F) and for dolphinfish sampled from the surface longline fishery (91-130 cm FL) was 1:0.76 (M:F). Back-calculated hatch dates from age-0 dolphinfish (n = 518) suggested that spawning occurs from June to September with the highest levels in June. This study is the first to use dorsal spines to determine the age of adult dolphinfish. Keywords: Coryphaena hippurus, Malta, age determination, von Bertalanffy, growth model, otoliths, dorsal spines. Introduction recently become more common due to a greater yield of catch. During the day, artificial trolling lures are used to Dolphinfish are members of the family Coryphae- lure any fish that may be present around the FADs. Night nidae which only includes one genus with two species: fishing involves localisation of the shoals close to the Coryphaena hippurus (Linnaeus, 1758) and Coryphae- FADs by means of powerful searchlights. If the number na equiselis (Linnaeus, 1758). Dolphinfish are found in of fish makes the fishing operation worthwhile, the boat tropical and sub-tropical surface waters of the Atlantic, Indian and Pacific oceans (Gibbs & Collette, 1959). makes a complete circle around the shoal. Historical land- Coryphaena hippurus occurs in the Mediterranean ings of dolphinfish in relation to the landings of two other from May - December, when the surface water temper- major targeted species by the Maltese fisheries sector are atures reach >16-18oC (Massuti & Morales-Nin, 1995). shown in Figure 2. In the sea around the Maltese Islands, adult dolphinfish Several dolphinfish age and growth studies have (63-117 cm FL) are mainly caught as by-catch from the shown that these fish are short lived, fast growing spe- swordfish and bluefin tuna longline fisheries in spring and cies (Beardsley, 1967; Rose & Hassler, 1968) and their summer. Juvenile fish (14-70 cm FL) are exploited by sur- maximum longevity has been estimated at four years. rounding net (lampara & purse seine) in Malta, Majorca, Longevity of dolphinfish from Florida was estimated to Sicily and Tunisia from late August to December. The be four years, but only 2% of the population was found Maltese “kannizzati” fish aggregating device (FAD) fish- to be older than two years (Beardsley, 1967), and only ery targeting dolphinfish is a traditional one in Malta. The 4% in North Carolina (Rose & Hassler, 1968). The maxi- FADs consist of a float which is anchored by a heavy piece mum lifespan of the Southern Caribbean dolphinfish of limestone (minimum of 70 kg) with tied palm fronds as stock does not appear to exceed 18 months, and few indi- shown in Figure 1. The net used in the FAD fishery is a viduals of the North Caribbean stock live longer than two modified purse seine, in view of the absence of pursing years (Oxenford & Hunte, 1999). Dolphinfish of 55cm rings. Fishermen fish these anchored FADs either during fork length (FL) read from otoliths and caught off Ma- the day or the night. Fishing the floats during the night has jorca were reported to be 176 days old and specimens of 334 Medit. Mar. Sci., 16/2, 2015, 334-345 Fig. 1: FADs setup (Adapted from Farrugia Randon, 1995). Fig. 2: Comparison of dolphinfish, swordfish and bluefin tuna landings (Data supplied by the Agriculture and Fisheries Regulation Department, MRRA) dolphinfish caught off the Canary Islands within a range of 76 to 103 cm FL were found to be two and three years for these ages of Florida and North Carolina dolphinfish. old from age reading of scales (Beardsley, 1967; Oxen- Dolphinfish, on average reach theirL ∞ in a year or two ford & Hunte, 1983; Uchiyama & Burch, 1986, Massuti and have high values of K. The K value for Mediterrane- & Morales-Nin, 1995). The maximum lifespan reported an dolphinfish was estimated to be 1.9 by Massuti et al. from scales for these fish in the Mediterranean was of (1999). This leads to steep curves in the von Bertalanffy three years, with fish at this age class ranging from 92 - growth curve. The asymptotic length (theoretical maxi- 120 cm FL (Massuti et al., 1999). mum length) of Florida dolphinfish is of 1.89 m and 1.53 Age and growth rates for dolphinfish have been de- m FL for males and females respectively, according to termined by means of scale annuli, daily growth incre- Beardsley (1967). The estimated maximum weight of 58.4 ments in otoliths (Oxenford & Hunte, 1983; Uchiyama kg is however much higher than the maximum weight of & Burch, 1986) and modal progression analysis (Wang, 46 kg reported for this species (Florida sportsman, 1979). 1979; Murray, 1985). Beardsley (1967) reported that a There is general agreement that dolphinfish in the juvenile dolphinfish specimen caught from Florida and western central Atlantic and Mediterranean reach sexual reared in captivity grew from 450 g to 16 kg in one year maturity in the first year of life, and that females reach and Schekter (1972) reported a growth rate of 4.3 kg maturity at a smaller size, but at similar age to males (from 0.7 to about 5 kg) in 30 days. In Barbados, dolphin- (Massuti & Morales-Nin, 1997; Oxenford, 1999). In fish may reach lengths of over 80 cm FL in 5.5 months a study by Potoschi et al. (1999), it was found that the and over one meter in less than one year (Oxenford & sampled dolphinfish belonging to the 0 age group had a Hunte, 1986). In Hawaii, they also attain a length of over sex ratio of 2:1 (females : males) whereas for older age one meter at the end of the first year (Uchiyama & Burch, groups the sex ratio was 1:1, indicating that the sex ratio 1986). By applying the length-weight regression of Rose varies with age class. The results obtained were in con- & Hassler (1968) to these data, this would correspond to cordance with those registered by Massuti & Morales- a mass of about 8 kg in one year. Growth rates presented Nin (1997) who reported a 1:1 ratio in adults sampled in by Benetti et al. (1994), for captive dolphinfish of 4.93 the western Mediterranean Sea. kg and 75.8 cm FL in 9.5 months were lower, yet among The present work provides biological information for the fastest recorded for bony fish reared in captivity. The Central Mediterranean dolphinfish, including length and absolute growth rates in terms of length of wild and cap- weight relationships, calculation of the condition fac- tive dolphinfish vary between 0.1 - 0.58 cm.d-1 for the tor, sex ratios, spawning period, and length at maturity, first year of life (Oxenford & Hunte, 1983). together with growth parameters and respective growth From the von Bertalanffy growth functions, Sch- rates from age readings of otoliths, scales and spines. wenke & Buckel (2008), reported faster growth rates for Such biological information is crucial for determining dolphinfish from the Gulf of Mexico and the Caribbean, the degree of exploitation that a fish stock can sustain than those from Florida, North Carolina and the Mediter- without suffering a population decline. Full-scale stock ranean. Mediterranean dolphinfish were reported as hav- assessments have never been carried out for this species ing slightly smaller sizes at age 2 and 3 compared to size in the Mediterranean, although a preliminary stock as- Medit. Mar. Sci., 16/2, 2015, 334-345 335 sessment was attempted by the General Fisheries Com- technique of Secor et al. (1991), and were cleaned and mission for the Mediterranean (2004). More extensive mounted in cold mounting resin which was then poly- and updated biological information needs to be obtained merised at 60oC for 24 hrs. The resulting blocks were for this fish so as to better calibrate population models for sectioned with a Buehler Isomet low speed saw and then future assessments.
Load more

Recommended publications
  • Overview of the Potential Interactions and Impacts of Commercial Fishing Methods on Marine Habitats and Species Protected Under the Eu Habitats Directive
    THE N2K GROUP European Economic Interest Group OVERVIEW OF THE POTENTIAL INTERACTIONS AND IMPACTS OF COMMERCIAL FISHING METHODS ON MARINE HABITATS AND SPECIES PROTECTED UNDER THE EU HABITATS DIRECTIVE Contents GLOSSARY................................................................................................................................................3 1. BACKGROUND.................................................................................................................................6 1.1 Fisheries interactions ....................................................................................................................7 2. FISHERIES AND NATURA 2000 - PRESSURES, INTERACTIONS, AND IMPACTS ....................................8 2.1 POTENTIAL PHYSICAL, CHEMICAL AND BIOLOGICAL PRESSURES AND IMPACTS ASSOCIATED WITH COMMERCIAL FISHING METHODS ............................................................................................8 DREDGES .......................................................................................................................................11 TRAWL - PELAGIC ..........................................................................................................................12 HOOK & LINE.................................................................................................................................12 TRAPS ............................................................................................................................................12 NETS ..............................................................................................................................................13
    [Show full text]
  • List of Authorized Fisheries and Fishing Gear
    Tab E, No. 7c Federal Register / Vol. 64, No. 231 / Thursday, December 2, 1999 / Rules and Regulations 67511 This is a condensed version of the Federal Register notice DEPARTMENT OF COMMERCE January 27, 1999, NMFS by final rule SUMMARY: NMFS revises the list of published the LOF (64 FR 4030). On National Oceanic and Atmospheric authorized fisheries and fishing gear July 28, 1999, NMFS delayed the Administration used in those fisheries (LOF) effectiveness of the LOF and invited contained in 50 CFR 600.725(v). additional public comments (64 FR 50 CFR Part 600 Effective December 1, 1999, no person 40781). This final rule revises the LOF or vessel may employ fishing gear or [Docket No. 980519132–9315–03; participate in a fishery in the and makes it effective on December 1, I.D.022498F] exclusive economic zone (EEZ) not 1999. RIN 0648–AK49 included in this LOF without giving 90 days’ advance notice to the Magnuson-Stevens Act Provisions; appropriate Fishery Management List of Fisheries and Gear, and Council (Council) or, with respect to Notification Guidelines Atlantic highly migratory species AGENCY: National Marine Fisheries (HMS), the Secretary of Commerce Service (NMFS), National Oceanic and (Secretary). Atmospheric Administration (NOAA), DATES: Effective December 1, 1999. Commerce. ADDRESSES: Copies of the regulatory ACTION: Final rule impact review for the final rule for . this action can be obtained from Dr. Gary C. Matlock, Director, Office of Sustainable Fisheries, NMFS, 1315 East-West Highway, Silver Spring, MD 20910. Send comments regarding the collection-of-information requirements associated with this rule to the above address and to the Office of Information and Regulatory Affairs, Office of Management and Budget (OMB), Washington, DC 20503 (Attention: NOAA Desk Officer).
    [Show full text]
  • Forage Fish Management Plan
    Oregon Forage Fish Management Plan November 19, 2016 Oregon Department of Fish and Wildlife Marine Resources Program 2040 SE Marine Science Drive Newport, OR 97365 (541) 867-4741 http://www.dfw.state.or.us/MRP/ Oregon Department of Fish & Wildlife 1 Table of Contents Executive Summary ....................................................................................................................................... 4 Introduction .................................................................................................................................................. 6 Purpose and Need ..................................................................................................................................... 6 Federal action to protect Forage Fish (2016)............................................................................................ 7 The Oregon Marine Fisheries Management Plan Framework .................................................................. 7 Relationship to Other State Policies ......................................................................................................... 7 Public Process Developing this Plan .......................................................................................................... 8 How this Document is Organized .............................................................................................................. 8 A. Resource Analysis ....................................................................................................................................
    [Show full text]
  • Pacific Salmon & Steelhead 2015-2020
    Pacific Salmon & Steelhead 2015-2020 Bibliography Trevor Riley, Head of Public Services, NOAA Central Library Katie Rowley, Research Librarian, NOAA Central Library Hope Shinn, Research Librarian, NOAA Central Library Jamie Roberts, Research Librarian, NOAA Central Library Erin Cheever, Research Librarian, NOAA Central Library NCRL subject guide 2020-15 https://doi.org/10.25923/7f5f-pz64 September 2020 U.S. Department of Commerce National Oceanic and Atmospheric Administration Office of Oceanic and Atmospheric Research NOAA Central Library – Silver Spring, Maryland Table of Contents Background & Scope ................................................................................................................................. 3 Sources Reviewed ..................................................................................................................................... 5 Section I: California Central Valley ............................................................................................................ 6 Section II: South-Central & Southern California Coast ........................................................................... 38 Section III: North-Central California Coast .............................................................................................. 47 Section IV: Southern Oregon & Northern California Coast ..................................................................... 76 Section V: Oregon Coast ........................................................................................................................
    [Show full text]
  • Guide to the Coastal Marine Fishes of California
    STATE OF CALIFORNIA THE RESOURCES AGENCY DEPARTMENT OF FISH AND GAME FISH BULLETIN 157 GUIDE TO THE COASTAL MARINE FISHES OF CALIFORNIA by DANIEL J. MILLER and ROBERT N. LEA Marine Resources Region 1972 ABSTRACT This is a comprehensive identification guide encompassing all shallow marine fishes within California waters. Geographic range limits, maximum size, depth range, a brief color description, and some meristic counts including, if available: fin ray counts, lateral line pores, lateral line scales, gill rakers, and vertebrae are given. Body proportions and shapes are used in the keys and a state- ment concerning the rarity or commonness in California is given for each species. In all, 554 species are described. Three of these have not been re- corded or confirmed as occurring in California waters but are included since they are apt to appear. The remainder have been recorded as occurring in an area between the Mexican and Oregon borders and offshore to at least 50 miles. Five of California species as yet have not been named or described, and ichthyologists studying these new forms have given information on identification to enable inclusion here. A dichotomous key to 144 families includes an outline figure of a repre- sentative for all but two families. Keys are presented for all larger families, and diagnostic features are pointed out on most of the figures. Illustrations are presented for all but eight species. Of the 554 species, 439 are found primarily in depths less than 400 ft., 48 are meso- or bathypelagic species, and 67 are deepwater bottom dwelling forms rarely taken in less than 400 ft.
    [Show full text]
  • Fish Identification Guide Depicts More Than 50 Species of Fish Commonly Encoun- Make the Proper Identification of Every Fish Caught
    he identification of different spe- Most species of fish are distinctive in appear- ance and relatively easy to identify. However, cies of fish has become an im- closely related species, such as members of the portant concern for recreational same “family” of fish, can present problems. For these species it is important to look for certain fishermen. The proliferation of T distinctive characteristics to make a positive regulations relating to minimum identification. sizes and possession limits compels fishermen to The ensuing fish identification guide depicts more than 50 species of fish commonly encoun- make the proper identification of every fish caught. tered in Virginia waters. In addition to color illustrations of each species, the description of each species lists the distinctive characteristics which enable a positive identification. Total Length FIRST DORSAL FIN Fork Length SECOND NUCHAL DORSAL FIN BAND SQUARE TAIL NARES FORKED TAIL GILL COVER (Operculum) CAUDAL LATRAL PEDUNCLE CHIN BARBELS LINE PECTORAL CAUDAL FIN ANAL FINS FIN PELVIC FINS GILL RAKERS GILL ARCH UNDERSIDE OF GILL COVER GILL RAKER GILL FILAMENTS GILL FILAMENTS DEFINITIONS Anal Fin – The fin on the bottom of fish located between GILL ARCHES 1st the anal vent (hole) and the tail. 2nd 3rd Barbels – Slender strands extending from the chins of 4th some fish (often appearing similar to whiskers) which per- form a sensory function. Caudal Fin – The tail fin of fish. Nuchal Band – A dark band extending from behind or Caudal Peduncle – The narrow portion of a fish’s body near the eye of a fish across the back of the neck toward immediately in front of the tail.
    [Show full text]
  • 02 Casazza FB106(4).Indd
    Fishes associated with pelagic Sargassum and open water lacking Sargassum in the Gulf Stream off North Carolina Item Type article Authors Casazza, Tara L.; Ross, Steve W. Download date 26/09/2021 20:35:41 Link to Item http://hdl.handle.net/1834/25466 348 Abstract—The community structure Fishes associated with pelagic Sargassum of fishes associated with pelagic Sar- gassum spp. and open water lacking and open water lacking Sargassum Sargassum was examined during summer and fall cruises, 1999–2003, in the Gulf Stream off North Carolina in the Gulf Stream off North Caro- lina. Significantly more individual Tara L. Casazza (contact author) fishes (n= 18,799), representing at least 80 species, were collected from Steve W. Ross samples containing Sargassum habi- Email address for T.L. Casazza: [email protected] tat, compared to 60 species (n=2706 Center for Marine Science individuals) collected from open- University of North Carolina Wilmington water habitat. The majority (96%) 5600 Marvin Moss Lane of fishes collected in both habitats Wilmington, North Carolina 28409 were juveniles, and planehead filefish (Stephanolepis hispidus) dominated both habitats. Regardless of sam- pling time (day or night), Sargassum habitat yielded significantly higher numbers of individuals and species compared with open-water collections. In the western North Atlantic Ocean, Atlantic have varied (Howard and Overall, fishes collected by neuston pelagic brown algae of the genus Sar- Menzies, 1969; Butler and Stoner, net tows from Sargassum habitat were gassum form a dynamic, floating habi- 1984), the majority of pelagic Sar- significantly larger in length than tat that supports a diverse assemblage gassum has persisted and reproduced fishes collected from open-water habi- of fishes, invertebrates, sea turtles, vegetatively in the western North At- tat with neuston nets.
    [Show full text]
  • Attachment 1 Agenda Item Summary
    Attachment 1 Agenda Item Summary BACKGROUND Current permanent regulations do not allow for harvest of bait fish (also known as forage fish) in Oregon inland waters for commercial purposes, with the exception of the Columbia River and a small herring fishery in Yaquina Bay. Oregon Revised Statutes (ORS) prohibit commercial fishing in select inland waters such as Nestucca Bay (ORS 511.606) and waters of Curry County (ORS 511.206 and ORS 511.306). This exhibit discusses allowing commercial harvest of baitfish in select inland waters and provides an approach to rulemaking by the Oregon Fish and Wildlife Commission (Commission). There are two issues: allowing harvesting of anchovies to be used as live bait in the commercial albacore fishery, and accommodating a long-term small volume shorebased bait business operating in Winchester Bay. Forage Fish Management Bait fish, also known as forage fish or Coastal Pelagic Species (CPS), are managed jointly through federal and state processes. The Pacific Fishery Management Council (Council) adopted the CPS Fishery Management Plan (FMP) in June of 1978. At that time, it was titled the Northern Anchovy Fishery Management Plan. The FMP was specific to management of the northern anchovy fishery until 1998, when an amendment was accepted that expanded the FMP to the entire CPS fishery. Stocks managed under the CPS FMP include Pacific sardine, Pacific (chub) mackerel, northern anchovy, market squid and jack mackerel. The Commission has the authority to implement regulations governing CPS fisheries that are consistent with or more restrictive than those implemented federally. Most notably, the Commission is responsible for management of the Oregon Pacific sardine fishery, in which participation is limited through state rule.
    [Show full text]
  • Age, Growth, and Migration Patterns of Dolphinfish (Coryphaena Hippurus) in the Northwestern Gulf of Mexico
    AGE, GROWTH, AND MIGRATION PATTERNS OF DOLPHINFISH (CORYPHAENA HIPPURUS) IN THE NORTHWESTERN GULF OF MEXICO Prepared by Peter Cole Young November 2014 A Thesis Submitted In Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE The Fisheries and Mariculture Graduate Program Department of Life Sciences Texas A&M University-Corpus Christi APPROVED: _____________________________ Date: __________ Dr. Gregory W. Stunz, Chair _____________________________ Date: __________ Dr. Matthew Johnson, Co-Chair ____________________________ Date: __________ Dr. Larry McKinney, Committee Member ____________________________ Date: __________ Dr. Jennifer Pollack, Committee Member _____________________________ Date: __________ Dr. Joe Fox, Chair Department of Life Sciences _____________________________ Date: __________ Dr. Frank Pezold, Dean College of Science and Engineering Format: Transactions of the American Fisheries Society i ABSTRACT The common Dolphinfish (Coryphaena hippurus) is a well-known pelagic food and gamefish with cosmopolitan distribution in tropical and subtropical waters. Dolphinfish are an economically important species as they support artisanal, recreational, and commercial fisheries throughout the world. Dolphinfish occur in U.S. waters in the Pacific off the coast of California, in the Atlantic from North Carolina to the Florida east coast and in the Gulf of Mexico from the Florida west coast to Texas. In the Western North Atlantic, Dolphinfish support an impressive commercial and recreational fishery. The recreational sector has grown more than 20% in the past 20 years creating the fastest growing fisheries sector in the Gulf of Mexico. Highly migratory species present unique management challenges, and scientific information is much needed. Key information gaps for Dolphinfish in the Gulf of Mexico include our lack of knowledge of their life history and migration patterns.
    [Show full text]
  • Tuna Fishing in Indonesia
    J. MARCZILLE T. BOELY M. UNAR G.S. MERTA B. SABHOTOMO J.C.B. UKTOLSEJA Éditions de i’0 RSTO Dl INSTITUT FRANÇAIS DE RECHEliCHE SCIENTIFIQUE POUR LE L¶ÉVELBPPEMENT EN COOPÉRATION TUNA FISHING IN INDONESIA (( La loi du II mars 1957 n’autorisant, aux termes des alinéas 2 et 3 de l’article 41, d’une part, (( que les ((copies ou reproductions strictement réservées à l’usage privé du copiste et non destinées (( à une utilisation collective» et, d’autre part, que les analyses et les courtes citations dans un but (( d’exemple et d’illustration, ((toute représentation ou reproduction intégrale, ou partielle, faite sans le G consentement de l’auteur ou de ses ayants droit ou ayant cause, est illicite)) (alinéa Ier de l’article 40). (( Cette représentation ou reproduction, par quelque procédé que ce soit, constituerait donc une (( contrefaçon sanctionnée par les articles 425 et suivants du Code Pénal)). ;: . I.S.B.N. : 2-7099-0739-9 @ O.R.S.T.O.M. 1984 Balai Peneletian Perikanan Laut Institut Français de Recherche Scientifique pour le Dbveloppemnt en Coopération (O.R.S.T.O.M.) TUNA FISHING IN INDONESIA by f. "w?&LLE " Il: UNAR: G.S. MERTA- 8. SAOHOTOMG- J.C.B. UKTOLSEJA- * Institut Français de Recherche Scientifique pour le Développement en Coopération (O.R.S.T.O.M.). +W Central Research Institute for Fisheries - Jakarta. +HI+ Research Institute for Marine Fisheries - Jakarta. SUIUMARY - Abstract . ..*.......*...*......*................... 2 _.'- <. .. 3, A R&U~&.......;...:..: . ..~.......................'.................... <,).' . ..B 4 - ,-Pendahuluan .-...............a......... .l. - Catch-statistics of tuna and tuna-like fishes in Indonesia.....;.................;5 : : Industrial longline fishing in .
    [Show full text]
  • Historical Background of the Trust
    Transylv. Rev. Syst. Ecol. Res. 21.3 (2019), "The Wetlands Diversity" 35 IS PENICULUS FISTULA FISTULA NORDMANN, 1832 REPORTED ON CORYPHAENA HIPPURUS LINNAEUS, 1758 FROM TURKEY? UPDATED DATA WITH FURTHER COMMENTS AND CONSIDERATIONS Ahmet ÖKTENER *and Murat ŞİRİN ** * Sheep Research Institute, Department of Fisheries, Çanakkele Street 7 km, Bandırma, Balıkesir, Turkey, TR-10200, [email protected], [email protected] DOI: 10.2478/trser-2019-0018 KEYWORDS: Peniculus fistula, Mullus, Coryphaena, Marmara Sea, checklist, host. ABSTRACT 53 striped surmullet, Mullus surmuletus Linnaeus, 1758 (Teleostei, Mullidae), were collected from the Marmara Sea, Turkey and examined for metazoan parasites in July 2017. The parasitic copepod, Peniculus fistula fistula Nordmann, 1832 (Pennellidae), was collected from all the hosts, both on fins and body surface. This is the second report of this copepod in Turkish marine waters. Although Peniculus fistula fistula was reported for the first time on Coryphaena hippurus Linnaeus, 1758 by Öktener (2008), there was an indefiniteness and doubt about the occurrence of this parasite. This study aimed to confirm occurrence of Peniculus fistula fistula in Turkey and to present revised host list with comments. ZUSAMMENFASSUNG: Ist der an Coryphaena hippurus festgestellte Linnaeus, 1758 Ruderfußkrebs Peniculum fistula fistula Nordmann, 1832 aus der Türkei? Aktualisierte Angaben mit weiteren Kommentaren und Betrachtungen. 53 Steifenbarben Mullus surmuletus Linnaeus, 1758 (Teleostei, Mullidae) wurden aus dem Marmara Meer, Türkei gesammelt und im Juli 2017 auf Vorkommen metazoischer Parasiten untersucht. Der parasitäre Ruderfußkrebs Peniculus fistula fistula Nordmann, 1832 (Pennellidae, Copepoda) wurde von allen Wirtstieren, sowohl von den Kiemen, als auch von der Körperoberfläche gesammelt. Vorliegender Bericht ist der zweite betreffend das Vorkommen dieser Copepoden Art in marinen Gewässern der Türkei.
    [Show full text]
  • Reproductive Biology and Feeding Habits of the Common Dolphinfish Coryphaena Hippurus (Linnaeus, 1758) Off Saurashtra Coast, India
    Indian J. Fish., 65(4): 44-49, 2018 44 DOI: 10.21077/ijf.2018.65.4.74184-05 Reproductive biology and feeding habits of the common dolphinfish Coryphaena hippurus (Linnaeus, 1758) off Saurashtra coast, India JYOTI SAROJ, K. MOHAMED KOYA*, K. L. MATHEW AND PANJA TEHSEEN College of Fisheries, Junagadh Agricultural University, Veraval - 362 265, Gujarat, India *ICAR-Central Marine Fisheries Research Institute, Ernakulam North P. O., Kochi - 682 018, Kerala, India e-mail: [email protected] ABSTRACT The present study analysed reproductive biology and feeding habits of the common dolphinfishCorphaena hippurus, along the Saurashtra coast of India. The study is based on an investigation of 295 specimens caught using drift gillnet at Veraval. The samples were collected on a monthly basis between March 2015 and February 2016. The sex ratio was 1:1.75 with a significant dominance of females in the population. The size at maturity for females was 593 mm FL (fork length). Absolute fecundity of the individuals ranged from 1,07,813 to 15,50,400 having ova diameter range of 0.3-1.96 mm. C. hippurus spawned throughout the year with its reproductive activity peaking in April and December. Thus the dolphin fish has an extended spawning season; during which it laid eggs almost continuously. A total of 128 stomachs of C. hippurus, whose FL ranged from 380 to 1250 mm were examined during the one year period of this study. Tunas were found to be the common dietary component of the dolphinfish. Keywords: Coryphaena hippurus, Fecundity, Reproduction, Sex ratio, Spawning season Introduction 2017).
    [Show full text]