Ecological Importance of Auxis Spp. As Prey for Dolphin and Wahoo
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Daily Ration of Japanese Spanish Mackerel Scomberomorus Niphonius Larvae
FISHERIES SCIENCE 2001; 67: 238–245 Original Article Daily ration of Japanese Spanish mackerel Scomberomorus niphonius larvae J SHOJI,1,* T MAEHARA,2,a M AOYAMA,1 H FUJIMOTO,3 A IWAMOTO3 AND M TANAKA1 1Laboratory of Marine Stock-enhancement Biology, Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, 2Toyo Branch, Ehime Prefecture Chuyo Fisheries Experimental Station, Toyo, Ehime 799-1303, and 3Yashima Station, Japan Sea-farming Association, Takamatsu, Kagawa 761-0111, Japan SUMMARY: Diel successive samplings of Japanese Spanish mackerel Scomberomorus niphonius larvae were conducted throughout 24 h both in the sea and in captivity in order to estimate their daily ration. Using the Elliott and Persson model, the instantaneous gastric evacuation rate was estimated from the depletion of stomach contents (% dry bodyweight) with time during the night for wild fish (3.0–11.5 mm standard length) and from starvation experiments for reared fish (8, 10, and 15 days after hatching (DAH)). Japanese Spanish mackerel is a daylight feeder and exhibited piscivorous habits from first feeding both in the sea and in captivity. Feeding activity peaked at dusk. The esti- mated daily ration for wild larvae were 111.1 and 127.2% in 1996 and 1997, respectively; and those for reared larvae ranged from 90.6 to 111.7% of dry bodyweight. Based on the estimated value of daily rations for reared fish, the total number of newly hatched red sea bream Pagrus major larvae preyed by a Japanese Spanish mackerel from first feeding (5 DAH) to beginning of juvenile stage (20 DAH) in captivity was calculated to be 1139–1404. -
Simulations of Fishing Effects on the Southern Benguela Fish Community Using an Individual-Based Model: Learning from a Comparison with Ecosim
Ecosystem Approaches to Fisheries in the Southern Benguela Afr. J. mar. Sci. 26: 95–114 2004 95 SIMULATIONS OF FISHING EFFECTS ON THE SOUTHERN BENGUELA FISH COMMUNITY USING AN INDIVIDUAL-BASED MODEL: LEARNING FROM A COMPARISON WITH ECOSIM Y-J. SHIN*, L. J. SHANNON† and P. M. CURY* By applying an individual-based model (OSMOSE) to the southern Benguela ecosystem, a multispecies analysis is proposed, complementary to that provided by the application of ECOPATH/ECOSIM models. To reconstruct marine foodwebs, OSMOSE is based on the hypothesis that predation is a size-structured process. In all, 12 fish species, chosen for their importance in terms of biomass and catches, are explicitly modelled. Growth, repro- duction and mortality parameters are required to model their dynamics and trophic interactions. Maps of mean spatial distribution of the species are compiled from published literature. Taking into account the spatial component is necessary because spatial co-occurrence determines potential interactions between predatory fish and prey fish of suitable size. To explore ecosystem effects of fishing, different fishing scenarios, previously examined using ECOSIM, are simulated using the OSMOSE model. They explore the effects of targeting fish species in the southern Benguela considered to be predators (Cape hake Merluccius capensis and M. paradoxus) or prey (anchovy Engraulis encrasicolus, sardine Sardinops sagax, round herring Etrumeus whiteheadi). Simulation results are compared and are generally consistent with those obtained using an ECOSIM model. This cross-validation appears to be a promising means of evaluating the robustness of model outputs, when separate validation of marine ecosystem models are still difficult to perform. -
Chub Mackerel, Scomber Japonicus (Perciformes: Scombridae), a New Host Record for Nerocila Phaiopleura (Isopoda: Cymothoidae)
生物圏科学 Biosphere Sci. 56:7-11 (2017) Chub mackerel, Scomber japonicus (Perciformes: Scombridae), a new host record for Nerocila phaiopleura (Isopoda: Cymothoidae) 1) 2) Kazuya NAGASAWA * and Hiroki NAKAO 1) Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8528, Japan 2) Fisheries Research Division, Oita Prefectural Agriculture, Forestry and Fisheries Research Center, Kamiura, Saeki, Oita 879-2602, Japan Abstract An ovigerous female of Nerocila phaiopleura Bleeker, 1857 was collected from the caudal peduncle of a chub mackerel, Scomber japonicus Houttuyn, 1782 (Perciformes: Scombridae), at the Hōyo Strait located between the western Seto Inland Sea and the Bungo Channell in western Japan. This represents a new host record for N. phaioplueura and its fourth record from the Seto Inland Sea and adjacent region. Key words: Cymothoidae, fish parasite, Isopoda, Nerocila phaiopleura, new host record, Scomber japonicus INTRODUCTION The Hōyo Strait is located between the western Seto Inland Sea and the Bungo Channell in western Japan. This strait is famous as a fishing ground of two perciform fishes of high quality, viz., chub mackerel, Scomber japonicus Houttuyn, 1782 (Scombridae), and Japanese jack mackerel, Trachurus japonicus (Temminck and Schlegel, 1844) (Carangidae), both of which are currently called“ Seki-saba” and“ Seki-aji”, respectively, as registered brands (e.g., Ishida and Fukushige, 2010). The brand names are well known nationwide, and the price of the fishes is very high (up to 5,000 yen per kg). Under these situations, the fishermen working in the strait pay much attention to the parasites of the fishes they catch because those fishes are almost exclusively eaten raw as“ sashimi.” Recently, a chub mackerel infected by a large parasite on the body surface (Fig. -
A Survey of the Order Tetraodontiformes on Coral Reef Habitats in Southeast Florida
Nova Southeastern University NSUWorks HCNSO Student Capstones HCNSO Student Work 4-28-2020 A Survey of the Order Tetraodontiformes on Coral Reef Habitats in Southeast Florida Anne C. Sevon Nova Southeastern University, [email protected] This document is a product of extensive research conducted at the Nova Southeastern University . For more information on research and degree programs at the NSU , please click here. Follow this and additional works at: https://nsuworks.nova.edu/cnso_stucap Part of the Marine Biology Commons, and the Oceanography and Atmospheric Sciences and Meteorology Commons Share Feedback About This Item NSUWorks Citation Anne C. Sevon. 2020. A Survey of the Order Tetraodontiformes on Coral Reef Habitats in Southeast Florida. Capstone. Nova Southeastern University. Retrieved from NSUWorks, . (350) https://nsuworks.nova.edu/cnso_stucap/350. This Capstone is brought to you by the HCNSO Student Work at NSUWorks. It has been accepted for inclusion in HCNSO Student Capstones by an authorized administrator of NSUWorks. For more information, please contact [email protected]. Capstone of Anne C. Sevon Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science M.S. Marine Environmental Sciences M.S. Coastal Zone Management Nova Southeastern University Halmos College of Natural Sciences and Oceanography April 2020 Approved: Capstone Committee Major Professor: Dr. Kirk Kilfoyle Committee Member: Dr. Bernhard Riegl This capstone is available at NSUWorks: https://nsuworks.nova.edu/cnso_stucap/350 HALMOS -
The Teeth and Dentition of the Filefish (Stephanolepis Cirrhifer) Revisited Tomographically
1 J-STAGE Advance Publication: August 12, 2020 Journal of Oral Science Original article The teeth and dentition of the filefish (Stephanolepis cirrhifer) revisited tomographically Hirofumi Kanazawa1,2), Maki Yuguchi1,2,3), Yosuke Yamazaki1,2,3), and Keitaro Isokawa1,2,3) 1) Division of Oral Structural and Functional Biology, Nihon University Graduate School of Dentistry, Tokyo, Japan 2) Department of Anatomy, Nihon University School of Dentistry, Tokyo, Japan 3) Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan (Received October 31, 2019; Accepted November 26, 2019) Abstract: The upper and lower tooth-bearing jaws of the filefish (Stepha- Teeth of Non-Mammalian Vertebrates, Elsevier, 2017). nolepis cirrhifer) were scanned using a micro-CT system in order to With regard to filefish dentition in Japan, an early morphologic and address the existing gaps between the traditional pictures of the morphol- histologic study of Monocanthus cirrhifer and Cantherines modestus ogy and histology. 2D tomograms, reconstructed 3D models and virtual (synonyms Stephanolepis cirrhifer and Thamnaconus modestus, respec- dissection were employed to examine and evaluate the in situ geometry of tively) was carried out by Sohiti Isokawa (Isokawa, Zool Mag 64, 194-197, tooth implantation and the mode of tooth attachment both separately and 1955). Phylogenetic interrelationships in the balistoids were examined collectively. No distinct sockets comparable to those in mammals were extensively by Matsuura [4], based on many anatomical characteristics evident, but shallow depressions were observed in the premaxillary and including the tooth-bearing jaws, which were the premaxillary and the the dentary. The opening of the tooth pulp cavity was not simply oriented dentary. -
First Record of a Filefish, Thamnaconus Tessellatus (Monacanthidae: Tetraodontiformes) from Jeju Island, Korea
KOREAN JOURNAL OF ICHTHYOLOGY, Vol. 29, No. 4, 277-281, December 2017 Received: October 26, 2017 ISSN: 1225-8598 (Print), 2288-3371 (Online) Revised: December 4, 2017 Accepted: December 5, 2017 First Record of a Filefish,Thamnaconus tessellatus (Monacanthidae: Tetraodontiformes) from Jeju Island, Korea By Jeong-Ho Park, Seo Ha Jang, Do Gyun Kim1, Jae-Mook Jeong2, Sukyung Kang and Jin-Koo Kim3,* Fisheries Resource Research Division, National Institute of Fisheries Science (NIFS), Busan 46083, Republic of Korea 1Department of Seafood and Aquaculture Science, Gyeongsang National University, Gyeongnam 53064, Republic of Korea 2Fisheries Resources Research Center, National Institute of Fisheries Science, Gyeongnam 53064, Republic of Korea 3Department of Marine Biology, Pukyong National University, Busan 48513, Republic of Korea ABSTRACT A single specimen (273.1 mm in standard length) of the monacanthid Thamnaconus tessellatus was caught by oneboat trawl from western Jeju Island and then collected at Busan Cooperative Fish Market (BCFM) on 30 May 2015. The specimen is characterized by both head and body with many dark brown spots densely, posterior margin of caudal fin no black, first dorsal spine originates the posterior half of eye, and 34~37 dorsal fin rays. This is the first record of T. tessellatus in Korea; we therefore add the species to the Korean fish fauna. According to the Yamada et al. (1995), we propose the Korean name, “Nambyeoljwichi” for this species. Key words: Monacanthidae, Thamnaconus tessellatus, deep-water leatherjacket, new Korean record, Jeju Island INTRODUCTION is characterized by fully erected first dorsalfin spine (not enveloped in a loose, prominent flap of skin), pelvic fin The family Monacanthidae of the order Tetraodonti rudiment moderate and located at posterior end of pelvis, formes is widely distributed throughout the world, with body depth equal to or greater than length of head length, 107 species in 28 genera (Nelson et al., 2016). -
Introduction Tunas and Other Large Highly-Migratory Species
CHAPTER 1: AUTHOR: LAST UPDATE: OVERVIEW SECRETARIAT Jan. 25, 2006 1. Overview 1.1 What is ICCAT? Introduction Tunas and other large highly-migratory species are typically assessed and managed through international arrangements. Since the distribution of such stocks is not limited to the waters of any single sovereign nation, such arrangements are necessary in order to share the available research and fishery information. The International Commission for the Conservation of Atlantic Tunas is responsible for the conservation of tunas and tuna-like species in the Atlantic Ocean and adjacent seas. The organization was established at a Conference of Plenipotentiaries, which prepared and adopted the International Convention for the Conservation of Atlantic Tunas signed in Rio de Janeiro, Brazil, in 1966. After a ratification process, the Convention entered formally into force in 1969. The official languages of ICCAT are English, French and Spanish. The Commission's work requires the collection and analysis of statistical information relative to current conditions and trends of the fishery resources in the Convention. About 30 species are covered by the Convention: Atlantic bluefin (Thunnus thynnus thynnus), yellowfin (Thunnus albacares), albacore (Thunnus alalunga), bigeye tuna (Thunnus obesus) and skipjack (Katsuwonus pelamis); swordfish (Xiphias gladius); billfishes such as white marlin (Tetrapturus albidus), blue marlin (Makaira nigricans), sailfish (Istiophorus albicans) and spearfish (Tetrapturus pfluegeri & T. belone); mackerels such as spotted Spanish mackerel (Scomberomorus maculatese) and king mackerel (Scomberomorus cavalla); and, small tunas like black skipjack (Euthynnus alletteratus), frigate tuna (Auxis thazard), and Atlantic bonito (Sarda sarda). Southern bluefin tuna (Thunnus maccoyii) is also part of the Convention, although currently the primary responsibility for assessing and managing this species rests with the Commission for the Conservation of Southern Bluefin Tuna (CCSBT). -
Chub Mackerel
species specifics BY CHUGEY SEPULVEDA, Ph.D., AND SCOTT AALBERS, M.S. CHUB MACKEREL (Scomber japonicus) Photo by Bob Hoose hub mackerel, also known as Pacific mackerel, is a prolific coastal pelagic species that occurs throughout temperate regions around the globe. Belonging to the C tuna family (Scombridae), a group of fishes with several adaptations for increased swimming performance (i.e., high deg- ree of streamlining, deeply forked caudal fin, finlets), this species is a valuable resource for several nations, including the U.S., and plays a key role in Southern California as an important forage species for higher trophic levels. BIOLOGY a highly varied diet that includes cope- In the eastern Pacific, chub mackerel pods, euphausids (krill), small fishes, range from Chile to the Gulf of Alaska, and squid. where they provide an important link To defend against the wide variety of in marine food webs between plank- predators that rely on mackerel as part tonic organisms and predatory fishes, of their diet, juvenile mackerel begin to marine mammals, and sea birds. They form structured schools at just over one are opportunistic feeders, particularly inch in size. In southern California many during the larval and juvenile stages, of our coastal game fishes, such as white when they feed upon a wide variety of seabass, yellowtail, giant seabass, tunas, zooplankton. Juvenile chub mackerel dorado, striped marlin, and pelagic are voracious feeders and grow rapidly, sharks, rely heavily on the chub mack- particularly during the spring and sum- erel resource. As juveniles, chub mack- mer months. Adult mackerel also have erel often develop multi-species schools 84 | PCSportfishing.com | THINK CONSERVATION | SEPTEMBER 2011 with other coastal pelagic species, such erel supported one of California’s most as Pacific sardines, jack mackerel, and lucrative fisheries during the 1930s and sometimes eastern Pacific bonito. -
Investigations on the Biology of Indian Mackerel Rastrelliger Kanagurta
Investigations on the biology of Indian Mackerel Rastrelliger kanagurta (Cuvier) along the Central Kerala coast with special reference to maturation, feeding and lipid dynamics Thesis submitted to Cochin University of Science and Technology in partial fulfillment of the requirement for the degree of DOCTOR OF PHILOSOPHY FACULTY OF MARINE SCIENCES GANGA .U. Reg. No. 2763 DEPARTMENT OF MARINE BIOLOGY, MICROBIOLOGY AND BIOCHEMISTRY SCHOOL OF MARINE SCIENCES COCHIN UNIVERSITY OF SCIENCE AND TECHNOLOGY KOCHI – 682 016, INDIA September 2010 DECLARATION I, Ganga. U., do hereby declare that the thesis entitled “Investigations on the biology of Indian Mackerel Rastrelliger kanagurta (Cuvier) along the Central Kerala coast with special reference to maturation, feeding and lipid dynamics “ is a genuine record of research work carried out by me under the guidance of Prof. (Dr.) C.K. Radhakrishnan, Emeritus Professor, Cochin University of Science and Technology, and no part of the work has previously formed the basis for the award of any Degree, Associateship and Fellowship or any other similar title or recognition of any University or Institution. Ganga.U Kochi – 16 September-2010 CERTIFICATE This is to certify that the thesis entitled “Investigations on the biology of Indian Mackerel Rastrelliger kanagurta (Cuvier) along the Central Kerala coast with special reference to maturation, feeding and lipid dynamics” to be submitted by Smt. Ganga. U., is an authentic record of research work carried out by her under my guidance and supervision in partial fulfilment of the requirement for the degree of Doctor of Philosophy of Cochin University of Science and Technology, under the faculty of Marine Sciences. -
The Italian Annotated Bibliography on Small Tunas
SCRS/2020/061 Collect. Vol. Sci. Pap. ICCAT, 77(9): 34-84 (2020) THE ITALIAN ANNOTATED BIBLIOGRAPHY ON SMALL TUNAS C. Piccinetti1, P. Addis2, A. Di Natale3, F. Garibaldi4, F. Tinti5 SUMMARY The Italian scientists have a long tradition of studies and research on many large pelagic species including, among others, the small tunas. The various small tuna species are important for the Italian fishery since many centuries, mostly from a socio-economical point of view. Some non- indigenous species are now present in the ICCAT Convention area. This is the first attempt to list together the many papers published so far by Italian scientists, concerning the biology of these species, the fisheries and many other scientific and cultural issues. The aim of this paper is to provide an annotated bibliography, with specific key words, even if it is surely incomplete, because of the many papers published over the years. This bibliography, which includes 309 annotated citations, was set together to serve the scientists and to help them in finding some rare references that might be useful for their work. RÉSUMÉ Les scientifiques italiens ont une longue tradition d'études et de recherches sur de nombreuses de espèces de grands pélagiques y compris, entre autres, les espèces de thonidés mineurs. Les différentes espèces de thonidés mineurs sont importantes pour la pêche italienne depuis de nombreux siècles, principalement d'un point de vue socio-économique. Certaines espèces non autochtones sont maintenant présentes dans la zone de la Convention de l’ICCAT. Il s'agit de la première tentative de répertorier les nombreux articles publiés à ce jour par des scientifiques italiens concernant la biologie de ces espèces, les pêcheries et de nombreuses autres questions scientifiques et culturelles. -
Bleeker, 1856), from Yoron-Jima Island, Ryukyu Islands (Actinopterygii, Tetraodontiformes, Monacanthidae
Bull. Natl. Mus. Nat. Sci., Ser. A, 39(4), pp. 211–213, November 22, 2013 First Record of the Filefish, Pseudomonacanthus macrurus (Bleeker, 1856), from Yoron-jima Island, Ryukyu Islands (Actinopterygii, Tetraodontiformes, Monacanthidae) Keiichi Matsuura1 and Satoru N. Chiba2 1 Department of Zoology, National Museum of Nature and Science, 4–1–1 Amakubo, Tsukuba, Ibaraki, 305–0005 Japan E-mail: [email protected] 2 Center for Molecular Biodiversity Research, National Museum of Nature and Science, 4–1–1 Amakubo, Tsukuba, Ibaraki, 305–0005 Japan E-mail: [email protected] (Received 20 August 2013; accepted 2 October 2013) Abstract A 113-mm SL specimen of a filefish, Pseudomonacanthus macrurus (Bleeker, 1856), was collected with a dip net at a depth of 1 m off the eastern north coast of Yoron-jima Island, Ryukyu Islands. Although juveniles and young specimens were previously recorded from the southern part of Okinawa-jima Island, Ryukyu Islands, the Yoron-jima specimen represents the first record of an adult of P. macrurus from Japan. Key words : Monacanthidae, Tetraodontiformes, distribution, fauna, Japan. vic fin measured from tip of upper lip to poste- Introduction rior end of encasing scales. The specimen is During a survey of the fish fauna of Yoron- deposited at the Kagoshima University Museum jima Island lying in the southern part of Satsunan (KAUM), and a tissue sample of the specimens Group in the Ryukyu Islands, an adult specimen is deposited at the National Museum of Nature of the filefish, Pseudomonacanthus macrurus and Science (NSMT) under the registration num- (Bleeker, 1856), was collected at a depth of 1m ber of NSMT-DNA-60524. -
Intrinsic Vulnerability in the Global Fish Catch
The following appendix accompanies the article Intrinsic vulnerability in the global fish catch William W. L. Cheung1,*, Reg Watson1, Telmo Morato1,2, Tony J. Pitcher1, Daniel Pauly1 1Fisheries Centre, The University of British Columbia, Aquatic Ecosystems Research Laboratory (AERL), 2202 Main Mall, Vancouver, British Columbia V6T 1Z4, Canada 2Departamento de Oceanografia e Pescas, Universidade dos Açores, 9901-862 Horta, Portugal *Email: [email protected] Marine Ecology Progress Series 333:1–12 (2007) Appendix 1. Intrinsic vulnerability index of fish taxa represented in the global catch, based on the Sea Around Us database (www.seaaroundus.org) Taxonomic Intrinsic level Taxon Common name vulnerability Family Pristidae Sawfishes 88 Squatinidae Angel sharks 80 Anarhichadidae Wolffishes 78 Carcharhinidae Requiem sharks 77 Sphyrnidae Hammerhead, bonnethead, scoophead shark 77 Macrouridae Grenadiers or rattails 75 Rajidae Skates 72 Alepocephalidae Slickheads 71 Lophiidae Goosefishes 70 Torpedinidae Electric rays 68 Belonidae Needlefishes 67 Emmelichthyidae Rovers 66 Nototheniidae Cod icefishes 65 Ophidiidae Cusk-eels 65 Trachichthyidae Slimeheads 64 Channichthyidae Crocodile icefishes 63 Myliobatidae Eagle and manta rays 63 Squalidae Dogfish sharks 62 Congridae Conger and garden eels 60 Serranidae Sea basses: groupers and fairy basslets 60 Exocoetidae Flyingfishes 59 Malacanthidae Tilefishes 58 Scorpaenidae Scorpionfishes or rockfishes 58 Polynemidae Threadfins 56 Triakidae Houndsharks 56 Istiophoridae Billfishes 55 Petromyzontidae