DOCSLIB.ORG

Scomberoides Commersonnianus) in the North-West Persian Gulf

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Scomberoides Commersonnianus) in the North-West Persian Gulf Changes in length-weight relationship and condition factor of Talang queenfish (Scomberoides commersonnianus) in the north-west Persian Gulf Item Type article Authors Masoomizadeh, S.Z.; Pazooki, J.; Valinassab, T. Download date 03/10/2021 01:30:27 Link to Item http://hdl.handle.net/1834/37904 Iranian Journal of Fisheries Sciences 17(1) 118-136 2018 DOI: 10.22092/IJFS.2018.115589 Changes in length-weight relationship and condition factor of Talang queenfish (Scomberoides commersonnianus) in the north-west Persian Gulf Masoomizadeh S.Z.1; Pazooki J.1*; Valinassab T.2 Received: May 2015 Accepted: August 2015 Abstract The present study, which was conducted on Scomberoides commersonnianus as one of the commercially important fishes of Carangidae, seeks to investigate changes of length-weight relationships in different sexes, seasons and length classes and to calculate condition factor of Talang queenfish. In this study, 563 specimens (292 males, 247 females, and 24 of unknown sex) were collected from the north-west of the Persian Gulf from Oct. 2011 to Jan. 2013. Length-weight relationships and condition factor were determined for each sex in four length classes within different seasons. In general, the growth pattern in this fish was negatively allometric and the length-weight relationship in combined sexes amounted to W=2.9109FL-1.8424. The growth pattern of combined sexes was negatively allometric in spring and autumn and isometric in summer and winter. Also, growth pattern was positively allometric in 8-31 class, negatively allometric in the 31-54 cm and 54-77 cm classes and isometric in the 77-100 cm class among all specimens. Also, the condition factor in males exceeded that of Downloaded from jifro.ir at 12:48 +0330 on Tuesday March 6th 2018 females in spring, autumn and winter; however, it was greater in females than in males during summer. In this season, females were in better condition owing to an increase in the weight of ovaries. The results demonstrate that growth pattern and condition factor vary in different seasons, lengths and sexes probably because of change in feeding intensity and the time of reproduction. Keywords: Scomberoides commersonnianus, Length-weight relationship, Condition factor, Persian Gulf 1-Faculty of Biological Sciences, Department of Marine Biology, Shahid Beheshti University, Evin, Tehran, Iran 2-Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), P.O. Box: 14965/149. Tehran, Iran. *Corresponding author's Email: [email protected] 119 Masoomizadeh et al., Changes in Length-weight relationship and Condition Factor of Talang … Introduction voracious predators which consume a The family Carangidae, which is range of prey items, but the most represented by 50 species (Valinassab, dominant (in terms of biomass) include 2013) is a dominant finfish group found teleosts (90%), crustacean (5%) and in the Persian Gulf and the Oman Sea. cephalopods (3%) (Griffiths et al., The term “queenfish”, a common name 2005). for Scomberoides as a genus in this The study of length-weight family, refers to a group of tropical relationships serves a crucial role in pelagic fish species which are widely fishery biological investigations. distributed throughout the Indo-West Length- weight relationship can be used Pacific and inhabit estuaries and reefs to find the variations in expected weight both inshore and offshore (Griffiths et from the known length groups, which al., 2005). This group consists of four are indicative of fatness, the estimation species: Talang or giant queenfish of standing-crop biomass when the (Scomberoides commersonnianus), length frequency distribution is known lesser queenfish (Scomberoides lysan), (Petrakis and Stergiou, 1995), the barred queenfish (Scomberoides tala), conversion of growth-in-length and needle skin queenfish equations to growth-in-weight for (Scomberoides tol). These species prediction of weight-at-age and for use constitute an ecologically significant in stock assessment models, the part of the ecosystem in coastal and calculation of condition factor, (Zafar, tropical areas. Talang or giant 2003; Froese, 2006) and queenfish, the largest of the four morphological comparison between species named above, are one of the populations of the same or various fish most ecologically important species (Kulbicki et al., 1993), breeding Downloaded from jifro.ir at 12:48 +0330 on Tuesday March 6th 2018 components forming tropical inshore and feeding state and their suitability to ecosystems, especially the estuaries, the environment (Saha et al., 2009). primarily because of their relatively New research has shown that the large size, high biomass and predatory determination of length-weight nature (Griffiths et al., 2005). relationships and the calculation of S. commersonnianus (Talang condition factor appear to be helpful in queenfish) grows to a maximum size of the management of fisheries and in 120 cm TL (Smith-Vaniz, 1984) and 16 research about fish population kg (International Game Fish dynamics (Asadi et al., 2017). Association, 2001). They are mostly The condition factor which shows found on banks and shelf slope habitats the degree of well-being of the fish in at depths of 80-200 m throughout much their habitat is expressed by „coefficient of its range, but in some regions of condition‟ also known as length- juveniles and sometimes adults may weight factor. This factor is a measure also frequent the shoreline (Fischer and of various ecological and biological Bianchi, 1984). Talang queenfish are factors such as degree of fitness, gonad Iranian Journal of Fisheries Sciences 17 (1) 2018 120 development and the suitability of the specimens were collected. Queenfish environment with regard to the feeding were captured using hook, trawl and net condition (Mac Gregoer, 1959). (Fig. 1). The biological characteristics of S. After the collection of specimens, commersonnianus have been described they were transported to the shore and in several different studies. Griffiths et then to a laboratory in ice powder and al. (2005) investigated the age, growth kept in a freezer (Almeida, 2003; and reproduction of this fish in northern Hajisamaea et al., 2003; Griffiths et al., Australia. Taghavi Motlagh et al. 2005) for laboratory tests. The weight (2005) examined its growth parameters and length of the fish were measured up and mortality rate in the southeastern to the nearest 0.1 g and 1 mm, coastal waters of Iran. Mbaru et al. respectively in the laboratory after (2010) studied the length–weight defrosting. Afterwards, the specimens relationship of 39 selected reef fishes, were cut on the ventral part and their including this fish, in the Kenyan sexes were determined. coasts. Panhwar et al. (2014) conducted The length-weight relationship was research on stock estimates of this estimated through the equation: W=aLb, species from the Arabian Sea coast of where W=weight, L=forked length, a Pakistan. Masoomizadeh et al. (2014) and b=intercept and slope, respectively. investigated food composition and the The data were converted on natural log effects of season, sex, maturity and to fit linear or straight line of log length length on gastro-somatic index of and log weight. The equation can be queenfish in the northwest of Persian demonstrated logarithmically as Log W Gulf (Khuzestan waters). = log a+ b log L (King, 1995). 2 Due to the fact that the calculation of Coefficient of determination (R ) was Downloaded from jifro.ir at 12:48 +0330 on Tuesday March 6th 2018 length-weight relationships is really adopted in order to determine the important and no studies have been strength of the relationship in the linear conducted as to the patterns of growth regression. and length-weight relationships in S. Deviation of the estimated „b‟ value commersonnianus in the south-west from the isometric value of 3 was tested coast of the Persian Gulf, this study using t test: deals with the analysis of length-weight sd log L b 3 t . n 2 relationships in this type of fish in sd logW 1 r 2 various size classes and different Where sd log L is the standard seasons among both sexes. deviation of the log Forked Length values, and sd log W is the standard Materials and methods deviation of the log W values, n being In the present study, sampling from the number of fish used in the landing centers in the North-west computation. The value b is different Persian Gulf lasted for 15 months (from Oct. 2011 to Jan. 2013) and 563 121 Masoomizadeh et al., Changes in Length-weight relationship and Condition Factor of Talang … from 3 if t is greater than the table value Where, rm is the slope of curve, Lm is of t for n - 2 df (Pauly, 1983). the mean fork length (mm) at sexual “Fulton‟s coefficient of conditions” maturity, L is mean carapace width or simply the condition factor (K) is (mm) and P is probability of presence used to investigate the seasonal and mature fishes. habitat differences in condition. For an allometrically growing species, the Results condition factor (K) was computed In this study, the maximum total length from the equation: K=W/Lb×100 and fork length were 107.2 cm and 96.9 (Venkataramanujam and Ramanathan, cm and their minima measured 9.4 and 1994). 8.6, respectively. The maximum weight Where W=mean weight (Total weight- was 10380.0 g. and the minimum viscera weight) (g), L=mean length in equaled 4.9. In the whole sample, 292 cm (Forked length), b=an exponent, and specimens were male, 247 were female K=the condition factor. and 24 were unknown in sex. The regression of log weight on log The monthly means of fork lengths length, growth pattern and K were are shown in Fig. 2. The mean fork- calculated independently for male, length measured was less than 35 cm female and combined sexes and then between November and March, but it calculated for seasons and different increased considerably in April and sizes for males, females and total fishes.
Load more

Recommended publications
  • Fishes of Terengganu East Coast of Malay Peninsula, Malaysia Ii Iii
    i Fishes of Terengganu East coast of Malay Peninsula, Malaysia ii iii Edited by Mizuki Matsunuma, Hiroyuki Motomura, Keiichi Matsuura, Noor Azhar M. Shazili and Mohd Azmi Ambak Photographed by Masatoshi Meguro and Mizuki Matsunuma iv Copy Right © 2011 by the National Museum of Nature and Science, Universiti Malaysia Terengganu and Kagoshima University Museum All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means without prior written permission from the publisher. Copyrights of the specimen photographs are held by the Kagoshima Uni- versity Museum. For bibliographic purposes this book should be cited as follows: Matsunuma, M., H. Motomura, K. Matsuura, N. A. M. Shazili and M. A. Ambak (eds.). 2011 (Nov.). Fishes of Terengganu – east coast of Malay Peninsula, Malaysia. National Museum of Nature and Science, Universiti Malaysia Terengganu and Kagoshima University Museum, ix + 251 pages. ISBN 978-4-87803-036-9 Corresponding editor: Hiroyuki Motomura (e-mail: [email protected]) v Preface Tropical seas in Southeast Asian countries are well known for their rich fish diversity found in various environments such as beautiful coral reefs, mud flats, sandy beaches, mangroves, and estuaries around river mouths. The South China Sea is a major water body containing a large and diverse fish fauna. However, many areas of the South China Sea, particularly in Malaysia and Vietnam, have been poorly studied in terms of fish taxonomy and diversity. Local fish scientists and students have frequently faced difficulty when try- ing to identify fishes in their home countries. During the International Training Program of the Japan Society for Promotion of Science (ITP of JSPS), two graduate students of Kagoshima University, Mr.
    [Show full text]
  • A Revision of Selected Genera of the Family Carangidae (Pisces) from Australian Waters
    Records of the Australian Museum (1990) Supplement 12. ISBN 0 7305 7445 8 A Revision of Selected Genera of the Family Carangidae (Pisces) from Australian Waters JOHN S. GUNN Division of Fisheries, CSIRO Marine Laboratories, P.O. Box 1538, Hobart, 7001 Tas., Australia ABSTRACT. An annotated list of the 63 species in 23 genera of carangid fishes known from Australian waters is presented. Included in these 63 are eight endemic species, eight new Australian records (Alepes vari, Carangoides equula, C. plagiotaenia, C. talamparoides, Caranx lugubris, Decapterus kurroides, D. tabl and Seriola rivoliana) and a new species in the genus Alepes. A generic key and specific keys to Alectis, Alepes, Carangoides, Scomberoides, Selar, Ulua and Uraspis are given. The systematics of the 32 Australian species of Alectis, Alepes, Atule, Carangoides, "Caranx", Elagatis, Gnathanodon,Megalaspis,Pantolabus, Scomberoides, Selar, Selaroides, Seriolina, Ulua and Uraspis are covered in detail. For each species a recommended common name, other common names, Australian secondary synonymy, diagnosis, colour notes, description, comparison with other species, maximum recorded size, ecological notes and distribution are given. Specific primary synonymies are listed when the type locality is Australia or Papua New Guinea. Contents Introduction .............................................................................................................................................. 2 Materials and Methods .............................................................................................................................
    [Show full text]
  • Reproductive Biology of Parona Signata (Actinopterygii: Carangidae), a Valuable Economic Resource, in the Coastal Area of Mar Del Plata, Buenos Aires, Argentina
    Neotropical Ichthyology Original article https://doi.org/10.1590/1982-0224-2019-0133 Reproductive biology of Parona signata (Actinopterygii: Carangidae), a valuable economic resource, in the coastal area of Mar del Plata, Buenos Aires, Argentina Correspondence: Mariano González-Castro 1 1,2 [email protected] Santiago Julián Bianchi and Mariano González-Castro The reproductive biology and life cycle of Parona leatherjacket, Parona signata, present in Mar del Plata (38°00’S 57°33’W) coast, was studied. Samples were obtained monthly since January 2018 to February 2019 from the artisanal fishermen and the commercial fleet of Mar del Plata. A histological analysis was carried out and the main biologic-reproductive parameters were estimated: fecundity, oocyte frequency distribution and gonadosomatic index (GSI). Both the macroscopic and microscopic analyses showed reproductive activity in March and November. Mature females were recorded, which showed hydrated oocytes, as was evidenced by the histological procedures. Both, the histological and the oocyte diameter distribution analyses showed the presence of all oocyte Submitted December 11, 2019 maturation stages in ovaries in active-spawning subphase, indicating that Accepted July 9, 2020 P. signata is a multiple spawner with indeterminate annual fecundity. Batch by Fernando Gibran fecundity ranged between 36,426 and 126,035 hydrated oocytes/ female. Relative Epub October 09, 2020 fecundity ranged between 42 and 150 oocytes/ g female ovary free. Keywords: Fecundity, Gonad histology, Life cycle, Pampo solteiro, Reproductive ecology. Online version ISSN 1982-0224 Print version ISSN 1679-6225 1 Laboratorio de Biotaxonomía Morfológica y Molecular de Peces (BIMOPE). Instituto de Investigaciones Marinas y Costeras, Neotrop.
    [Show full text]
  • <I>Scomberoides Commersonnianus
    The University of Southern Mississippi The Aquila Digital Community Faculty Publications 6-1-2018 Feeding Patterns of Two Commercially Important Fish Species Scomberoides commersonnianus and S. tol In the Northern Arabian Sea Coast of Pakistan Nazia Qamar University of Karachi Sher Khan Panhwar University of Karachi Ralf Riedel Gulf Coast Research Laboratory Follow this and additional works at: https://aquila.usm.edu/fac_pubs Part of the Zoology Commons Recommended Citation Qamar, N., Panhwar, S., Riedel, R. (2018). Feeding Patterns of Two Commercially Important Fish Species Scomberoides commersonnianus and S. tol In the Northern Arabian Sea Coast of Pakistan. Pakistan Journal of Zoology, 50(3), 941-949. Available at: https://aquila.usm.edu/fac_pubs/18147 This Article is brought to you for free and open access by The Aquila Digital Community. It has been accepted for inclusion in Faculty Publications by an authorized administrator of The Aquila Digital Community. For more information, please contact [email protected]. Pakistan J. Zool., vol. 50(3), pp 941-949, 2018. DOI: http://dx.doi.org/10.17582/journal.pjz/2018.50.3.941.949 Feeding Patterns of Two Commercially Important Fish Species Scomberoides commersonnianus and S. tol in the Northern Arabian Sea Coast of Pakistan Nazia Qamar1, Sher Khan Panhwar1,* and Ralf Riedel2,* 1Center of Excellence in Marine Biology, University of Karachi, Karachi 2Center for Fisheries Research and Development, Gulf Coast Research Laboratory, The University of Southern Mississippi, Ocean Springs – MS 39564, USA Article Information Received 09 March 2017 ABSTRACT Revised 01 July 2017 Accepted 21 July 2017 Port landing of Scomberoides commersonnianus and S.
    [Show full text]
  • Indo-West Pacific Species of Trachinotus with Spots on Their
    Zootaxa 4651 (1): 001–037 ISSN 1175-5326 (print edition) https://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2019 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4651.1.1 http://zoobank.org/urn:lsid:zoobank.org:pub:9AAC432F-D0FC-470A-8468-7B24E4D57514 Indo-West Pacific species of Trachinotus with spots on their sides as adults, with description of a new species endemic to the Marquesas Islands (Teleostei: Carangidae) WILLIAM F. SMITH-VANIZ1 & STEPHEN J. WALSH2 1Florida Museum of Natural History, University of Florida, Gainesville, FL 32611-7800, USA, E-mail: [email protected] 2U.S. Geological Survey, Wetland and Aquatic Research Center, 7920 NW 71st Street, Gainesville, FL 32653, USA, E-mail: swalsh@ usgs.gov Abstract Diagnoses, comparisons, photographs and distribution maps are given for three previously described Indo-West Pacific species of Trachinotus that develop spots on their sides as adults. A new species, Trachinotus macrospilus, is described from the Marquesas Islands where it is endemic and the only species of the genus present. It differs from the other spotted Indo-West Pacific species most noticeably in having adults with only one or two large spots on each side, the largest spot larger than the iris diameter, and in having no large spot positioned above the pectoral fin. An identification key is given for all Indo-West Pacific species of Trachinotus and a molecular phylogeny, including 16 of the 20 valid species of Trachinotus is presented. A neotype is designated for Scomber botla Shaw, 1803. Key words: taxonomy, Carangidae, Trachinotus macrospilus n.
    [Show full text]
  • Chec List an Update to the List of Coral Reef Fishes from Koh Tao, Gulf Of
    Check List 10(5): 1123–1133, 2014 © 2014 Check List and Authors Chec List ISSN 1809-127X (available at www.checklist.org.br) Journal of species lists and distribution An update to the list PECIES S Gulf of Thailand OF of coral reef fishes from Koh Tao, 1* 2 ISTS Patrick Scaps and Chad Scott L 1 Laboratoire de Biologie animale,[email protected] Université des Sciences et Technologies de Lille, 59 655 Villeneuve d’Ascq Cédex, France. 2 New Heaven Reef Conservation Program, 48 Moo 3, Koh Tao, Suratthani, Thailand, 84360. * Corresponding author: E-mail: ABSTRACT: (i.e., cryptic species or transient Twenty-one species are reported for the first time from Koh Tao (Turtle Island) in the Gulf of Thailand. TInformationhis and photographs were obtained from local scuba divers in order to censusAntennatus rare and Histrio), Ophichthyidae (genusspecies onlyCallechelys present), duringPlatycephalidae one season) (genus or not previouslyThysanophrys recorded), Plotosidae fish species (genus living Plotosus on or near) and coral Synanceiidae reefs from the(genera area. Inimicus is the and first Synanceia time that species belonging to the families AntennariidaePseudobalistes, (genera Balistidae; Cyclichthys, Diodontidae; Bolbometopon, Scaridae; and Hippocampus, ), and reef-fish genera of severalAntennatus families nummifer ( (Antennariidae), Pseudobalistes marginatus (Balistidae), Monacanthus chinensis (Monacanthidae),Syngnathidae), Callechelys among others,marmora haveta been(Ophichthyidae), recorded in KohThysnophrys Tao. Of the cf. 21 chiltonae species reported(Platycephalidae), for the first Bolbometopon time from muricatumKoh Tao, 7 (Scaridae) species ( and Synanceia cf. verrucosa (Synanceidae)) are new records for the species found in the present study. Gulf of Thailand. To date, 223 species of coral reef fishes belonging to 53 families are known from Koh Tao, including the 10.15560/10.5.1123 DOI: Introduction MaterialS and Methods 2 archipelago in the western Gulf of Thailand.
    [Show full text]
  • Two Carangid Fishes (Actinopterygii: Perciformes), Caranx Heberi And
    Species Diversity, 2007, 12, 223–235 Two Carangid Fishes (Actinopterygii: Perciformes), Caranx heberi and Ulua mentalis, from Kagoshima: the First Records from Japan and Northernmost Records for the Species Hiroyuki Motomura1, Seishi Kimura2 and Yuriko Haraguchi1 1 The Kagoshima University Museum, 1-21-30 Korimoto, Kagoshima, 890-0065 Japan E-mail: [email protected] 2 Fisheries Research Laboratory, Mie University, 4190-172 Wagu, Shima, Mie, 517-0703 Japan E-mail: [email protected] (Received 7 July 2007; Accepted 7 October 2007) Catches of two carangid fishes (Perciformes), Caranx heberi (Bennett, 1830) (two specimens: 251.5–260.0 mm fork length) and Ulua mentalis (Cuvier, 1833) (nine specimens: 203.6–244.0 mm), off Kasasa on the East China Sea side of Kagoshima Prefecture, Kyushu, Japan, represent the northernmost records of these Indo-West Pacific species. Caranx heberi has not previously been recorded north of the equator in the western Pacific, and the northern- most record of U. mentalis has been Taiwan. The Kagoshima specimens are described in detail and their biogeographic implications are discussed. Key Words: Teleostei, Actinopterygii, Carangidae, Caranx heberi, Ulua mentalis, Japan, new records. Introduction In their catalog of Japanese fishes, Jordan et al. (1913) reviewed the previous literature related to Japanese fishes, including Temminck and Schlegel, Stein- dachner and Döderlein, and Hilgendorf, and listed 20 species of the family Carangi- dae from Japan (excepting the Ryukyu Islands), with the Japanese name for each. Wakiya (1924) later reviewed the carangoid fishes of Korea, Japan, and Taiwan in detail and recognized 74 species.
    [Show full text]
  • Reproduction, Sexual Maturity, and Spawning Ecology of Talang, Scomberoides Commersonnianus, and Needlescaled Queenfish, Scomberoides Tol in Pakistan
    Iranian Journal of Fisheries Sciences 19(5) 2705-2719 2020 DOI: 10.22092/ijfs.2020.122632 Reproduction, sexual maturity, and spawning ecology of Talang, Scomberoides commersonnianus, and Needlescaled queenfish, Scomberoides tol in Pakistan Qamar N.1, 2*; Panhwar S.K.2; Wang P1 Received: December 2018 Accepted: December 2019 Abstract An analysis of sexual pattern, spawning ecology, and size at sexual maturity in two queenfishes (Talang queenfish, Scomberoides commersonnianus and needlescaled queenfish, S. tol) was made. Fish samples were collected monthly by gillnet and trawls from the northern Arabian Sea coast of Pakistan from July 2013 to June 2014. The gonad maturity was categorized in six developmental stages based on visual analysis (colour, morphology) and histological screening of the gonads. The males of Talang queenfish dominated the population with a ratio of 1:0.4 (♂ to ♀) whereas females were higher (1:1.6) in needlescaled queenfish population. Talang queenfish was reproductively active during summer with a peak in June and winter spawning season, which appeared from November to February. Needlescaled queenfish is repeatedly spawner, appeared to be in spawning in the summer and fall. Estimated size-at-sexual- maturity for Talang and needlescaled queenfish suggests that the minimum legal length (MLL) should not be set lower than 35, 38 cm TL respectively. This conservative MLL, equal to or more than a length at functional maturity of both queenfish species would safeguard immature individuals until they reach a size at which they can contribute to Downloaded from jifro.ir at 8:27 +0330 on Thursday September 30th 2021 the reproductive capacity of the populations in the northern Arabian Sea coast.
    [Show full text]
  • Scomberoides Commersonnianus Lacepède, 1801) Illustration Courtesy of Bernard Yau (
    AAggee,, GGrroowwtthh aanndd RReepprroodduuccttiivvee DDyynnaammiiccss ooff tthhee TTaallaanngg QQuueeeennffiisshh ((SSccoommbbeerrooiiddeess ccoommmmeerrssoonnnniiaannuuss)) iinn NNoorrtthheerrnn AAuussttrraalliiaa Shane Griffiths, Gary Fry & Tonya van der Velde FFiinnaall RReeppoorrtt Talang queenfish (Scomberoides commersonnianus Lacepède, 1801) Illustration courtesy of Bernard Yau (www.efishalbum.com) Age, Growth and Reproductive Dynamics of the Talang Queenfish (Scomberoides commersonnianus) in Northern Australia Griffiths, Shane. Age, growth and reproductive dynamics of the Talang Queenfish (Scomberoides commersonnianus) in northern Australia : final report to the National Oceans Office. Bibliography. ISBN 1 921061 08 1. 1. Carangidae - Australia - Age. 2. Carangidae - Australia - Growth. 3. Carangidae - Australia - Reproduction. I. Fry, G. C. II. Velde, T. D. van der. III. CSIRO. Marine and Atmospheric Research. IV. National Oceans Office (Australia). V. Title. 597.72 © National Oceans Office and CSIRO Marine and Atmospheric Research, 2005. This work is copyright. Except as permitted under the copyright Act 1968, no part of this publication may be reproduced by any process, electronic or otherwise, without the specific written permission of the copyright owners. Neither may information be stored electronically in any form whatsoever without such permission. DISCLAIMER The authors do not warrant that the information in this book is free from errors or omissions. The authors do not accept any form of liability, be it contractual, tortuous or otherwise, for the contents of this book or for any consequences arising from its use or any reliance placed upon it. The information, options and advices contained in this book may not relate to, or be relevant to, a reader’s particular circumstances. Opinions expressed by the authors are the individual options of those persons and are not necessarily those of the publisher or research provider.
    [Show full text]
  • Scomberoides Tala (Cuvier, 1832)
    click for previous page CARAN Scom 3 1983 FAO SPECIES IDENTIFICATION SHEETS FAMILY: CARANGIDAE FISHING AREA 51 (W. Indian Ocean) Scomberoides tala (Cuvier, 1832) OTHER SCIENTIFIC NAMES STILL IN USE: Chorinemus tala Cuvier, 1832 Chorinemus hainanensis Chu & Cheng, 1958 VERNACULAR NAMES: FAO : En - Barred queenfish Fr - Sauteur carsia Sp - Jurel carsia NATIONAL: DISTINCTIVE CHARACTERS: Body oblong to elliptical, strongly compressed; snout and nuchal profile nearly straight. Upper lip joined to snout at midline by a bridge of skin (frenum), except crossed by a shallow groove in very young; upper jaw extends slightly beyond margin of eye in adults; lower jaw with 2 rows of teeth separated by a shallow groove, scales on midbody adults with teeth in inner row distinctly larger than those in outer row; gillrakers (excluding rudiments) 1 to 3 upper, 7 to 11 lower and 11 to 15 total on first gill arch. Two separate dorsal fins, the first with 6 or 7 short spines, depressible into a shallow groove on dorsal midline, followed by 1 spine and 19 to 21 soft rays; anal fin with 2 detached spines followed by 16 to 19 soft rays; posterior soft dorsal- and anal-fin rays consisting of semidetached finlets; bases of anal and second dorsal fins about equal in length; height of second dorsal-fin lobe 14.6 to 18.0% of fork length in specimens larger than 15 cm fork length; pelvic fins about equal in length or shorter than pectoral fins. Lateral line only slightly irregular, weakly to moderately convex above pectoral fin, becoming straight posteriorly. No scutes; scales on midbody below lateral line partially embedded and lanceolate.
    [Show full text]
  • William S. THULASITHA and Kuganathan SIVASHANTHINI *
    ACTA ICHTHYOLOGICA ET PISCATORIA (2013) 43 (1): 7–13 DOI: 10.3750/AIP2013.43.1.02 REPRODUCTIVE CHARACTERISTICS OF DOUBLESPOTTED QUEENFISH, SCOMBEROIDES LYSAN (ACTINOPTERYGII: PERCIFORMES: CARANGIDAE), FROM SRI LANKAN WATERS: IMPLICATIONS FOR FISHERIES MANAGEMENT William S. THULASITHA and Kuganathan SIVASHANTHINI * Department of Zoology, Faculty of Science, University of Jaffna, Sri Lanka Thulasitha W.S., Sivashanthini K. 2013. Reproductive characteristics of doublespotted queenfish, Scomberoides lysan (Actinopterygii: Perciformes: Carangidae), from Sri Lankan waters: Implications for fisheries management. Acta Ichthyol. Piscat. 43 (1): 7–13. Background. The doublespotted queenfish, Scomberoides lysan (Forsskål, 1775), is one of the most important and highly priced food fishes popular for dry fish production in Sri Lanka. Knowledge of spawning pattern and season are important for the management of S. lysan. The biology of S. lysan is poorly known, however, and no specific management regime is available for this species in Sri Lanka. The presently reported study is the first attempt to understand the reproductive characteristics of S. lysan with implications for its management. Materials and methods. Weekly samples, totalling 1429 specimens, were collected from Sri Lankan marine waters from January 2010 to December 2011, analyzed macroscopically, and their maturity stages identified. Sex ratio, size at maturity, length-class distribution, monthly distribution of maturity stages, fecundity, and the indices related to reproduction were examined. Statistical analyses were performed to determine relations between gonad weight, total length, fork length, and fecundity. Results. Females were categorized macroscopically into five maturity stages, males into four (males mature slightly earlier than females). Spawning and spent stages of females were only available during June and September and significant peaks in the gonadosomatic index of males and females were also noted from these two months.
    [Show full text]
  • The Etyfish Project © Christopher Scharpf and Kenneth J
    CARANGIFORMES (part 1) · 1 The ETYFish Project © Christopher Scharpf and Kenneth J. Lazara COMMENTS: v. 1.0 - 18 July 2020 Series CARANGARIA Order CARANGIFORMES (part 1 of 4) Suborder CENTROPOMOIDEI Family LATIDAE Giant Perches 3 genera · 14 species · Taxonomic note: nested within Centropomidae by some workers. Hypopterus Gill 1861 hypo-, ventral or below; pterus, fin, allusion not explained, presumably referring to anal fin, described as longer than dorsal fin Hypopterus macropterus (Günther 1859) macro-, long or large; ptera, fin, allusion not explained, presumably referring “very long” third spine of dorsal fin and/ or “long” anal fin Lates Cuvier 1828 from latès or latos, local name for L. niloticus since the “time of the ancients” (translation) Lates angustifrons Boulenger 1906 angustus, narrow; frons, front, face or brow, referring to “much narrower interorbital region” compared to the closely related L. microlepis Lates calcarifer (Bloch 1790) calcar, spur; fero, to bear, referring to four spines on operculum, “which resemble a spur” (translation) Lates japonicus Katayama & Taki 1984 Japanese, known only from the western North Pacific of Japan Lates lakdiva Pethiyagoda & Gill 2012 Lakdiva, Sinhalese name for island of Sri Lanka, only known area of occurrence Lates longispinis Worthington 1932 longus, long; spinis, spine, proposed as a subspecies of L. niloticus with a longer third spine of dorsal fin Lates macrophthalmus Worthington 1929 macro-, large; ophthalmus, referring to larger eye compared to L. niloticus Lates mariae Steindachner 1909 in honor of Maria Horn who, with her husband Adolf, explored German East-Africa (present-day Burundi and Tanzania), collecting specimens for the Vienna Museum, including type of this one Lates microlepis Boulenger 1898 micro-, small; lepis, scale, referring to smaller scales compared to L.
    [Show full text]