DOCSLIB.ORG

Morphometric Relationships of Spineless Cuttlefish, Sepiella Inermis (Orbigny, 1848) from Mumbai Waters

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Morphometric Relationships of Spineless Cuttlefish, Sepiella Inermis (Orbigny, 1848) from Mumbai Waters Morphometric relationships of spineless cuttlefish, Sepiella inermis (Orbigny, 1848) from Mumbai waters Item Type article Authors Sundaram, S.; Khan, M.Z. Download date 01/10/2021 22:51:42 Link to Item http://hdl.handle.net/1834/34550 J. Indian Fish. Assoc., 37: 51-55, 2010 51 MORPHOMETRIC RELATIONSHIPS OF SPINELESS CUTTLEFISH, SEPIELLA INERMIS (ORBIGNY, 1848) FROM MUMBAI WATERS Sundaram Sujit1 and Mohammad Zafar Khan Mumbai Research Centre of Central Marine Fisheries Research Institute, 2nd Floor; C.J.F.E old campus, Fisheries University road, Seven Bung/ows, Versova, Mumbai 400 061. 1corresponding author: e-mail : [email protected] ABSTRACT The relationships of various morphometric characters with dorsal mantle length (DMl) of 2 Sepiella inermis from Mumbai waters was established. The coefficient of correlation (r ) for various morphometric characters against dorsal mantle length ranged from 0.747 to 0.942 indicating high degree of relationship among the characters compared. The regression of characteristics obtained by least squares method for S. inermis indicates that the characters have positive allometric growth. Keywords: Morphometric relationships, Cuttlefish. INTRODUCTION different size measurements because of which comparisons are extremely difficult. It is Cephalopods are strictly marine therefore imperative to have mathematical organisms and are found in all of the world's expressions, which define a particular oceans, particularly over regions of relationship, so that measurements can be continental shelf. Sepiella inermis (Orbigny, converted for better comparisons (Farmer, 1848) is a demersal shallow-water species 1986). with a wide distribution along the In do-pacific region. In Indian waters, it constitutes the Many times meristic differences fishery along the east and west coasts in between the stocks are very small and not shallow waters up to depths of about 40 m. apparent in individual specimens, but often only in an average of large number of Studies of morphological variation specimens. Analysis of such data requires among fish population continue to play an intricate statistical treatment, which is important role in stock delineation, despite essential to pin point differences or the advent of many biochemical and resemblances of characters for the molecular genetic techniques. In tropical identification of a particular stock of a specific waters, where the fish fauna is very rich and locality. The studies of morphometric and diverse, identification becomes more difficult meristic characters of a fish gives substantial as many similar species exist in the same information with regard to exact identification locality with overlapping characters. key of the species and such data can be used to Morphometric relationships, that are compare the same species of different proportions of different body parts are more geographical locations. frequently used since they are easier to compute. Frequently different authors quote 52 Sundaram Sujit and Mohammad Zafar Khan In cepha!opods, these include were taken using a divider and measuring relationships between various parameters board to the nearest millimeter as described such as dorsal mantle length, dorsal body by CMFRI (1995). After taking lengths, the breadth, total weight, meat weight etc. In case cuttlefishes were blotted dry and weighed on of cephalopods, length of the mantle from the an electronic balance up to nearest milligram anterior most point on the dorsal side to the to record the body weight (BD WT). The meat posterior body tip is considered as the weight (MT WT) was noted after removing the 'standard' and is termed as dorsal mantle head, cuttlebone, skin and the entire viscera. length (DML). A lot of work has been carried Cuttlebone {shell) weight (SL WT) was out by different authors, on many species of recorded after removing it from the mantle cephalopods from Indian waters, mainly on cavity. the length-weight relationship, but there is The data collected from January 2001 not much work on other morphometric to December 2002 were pooled together and relationships on cephalopods and there the different relationships were obtained seems to be no study on the biometrics and through regression analysis by the method of morphometric characters of Sepiel/a inermis 'least squares' based on individual from Indian waters. measurements. Relationships between dorsal mantle length (DML)/ dorsal mantle breadth (DMB), dorsal mantle length (DML)/ head MATIER!ALAND METHODS length {HL}, dorsal mantle length (DML)/ head A statistical analysis of breadth (HB), dorsal mantle length (DML)/ fin morphometric characteristics gives a better length (FL}, dorsal mantle length {DML)/ idea of relationship with in the species and tentacle length (TL), dorsal mantle length also to compare with the same species in (DML)/ arm lengths (AL I, AL If, AL Ill, AL IV} and different geographical areas. It was noticed Head length (HL)/ eye diameter (ED) were that the males and females of S. inermis differ found to be linear. The DML was taken as the in size. The females grow larger in size than independent variable (X) and the other males and because of this all dimensional characteristics according to suitability as a relationships were calculated separately for dependent variable {Y) for fitting the the two sexes. When the sexes of smaller regression. The analysis showed exponential specimens could not be identified externally, relationship for dorsal mantle length (DML)/ the mantle was cut open mid-ventrally to meat weight (MT WT) and dorsal mantle determine the sex. Presence of small pear length (DML)/ cuttlebone (shell) weight (SL shaped nidamental glands was indicative of WT). Therefore, logarithmic transformation females. was adopted. The expression used for calculation was: During the period January 2001- December 2002, monthly samples of S. Log W =Log a + b Log L inermis were collected from the trawlers Scattergram plots of each operated at New Ferry Wharf. The samples measurement were plotted against DML for from a wide range of sizes were brought to the comparing regression of morphometric laboratory and were identified, sorted and measurements. Relationship among the sexed after which the length and weight of various morphometric parameters was individuals were taken in fresh condition. The worked out using standard linear regression DML and other morphometric measurements analysis technique. Method of Le Cren (1951) MORPHOMETRIC RELATIONSHIPS OF SPINELESS CUTTLEFISH SEP/ELLA INERMIS (ORBIGNV, 1848) 53 FROM MUMBAI WATERS was used for the analysis. The curvilinear It is seen that the correlation 2 relation was transformed into linear one by coefficient (r ) of various morphometric taking base ten logarithms. Intercept (a) and characteristics (other than arm lengths) as a slope or regression coefficient (b) was function of length varied from 0.6463 (eye calculated using the standard regression diameter) to 0.9263 (fin length) for males and analysis. it varied from 0.3719 {eye diameter) to 0.9421 (fin length} for females. The values indicated The relative length of arms is that the compared characteristics were expressed as 'arm formula' in order of related to each other. Most of the characters decreasing length (Silas et al., 1985). For correlated, exhibited linear growth. The 'b' better comparisons, arm lengths and tentacle values for MT WT and SL WT indicated that lengths from the right side of the body were they grew in exponential fashion hence they considered for measurements. It was were converted in to Log to get a linear attempted to derive at the arm ratio, which is relationship. The meat and shell grew in species specific. The current investigations weight exponentially as the animal grew. The would help to differentiate the populations 2 'r ' value varied from 0.9223 in the case of shell and racial differences of this species, if any. weight to 0.9356 in case of meat weight for males and it varied from 0.9397 in the case of shell weight to 0.9457 in case of meat weight RESULTS for females. On an average the arm ratio of 5. In males, there are a series of white inermis is found to follow the ratio 4:3:2:1 for spots or ornamental ocelli along the dorso­ both males and females. When the animals lateral surface of the body and the entire strip were young, it was observed that the arms of the fins. It is interesting to note that males seemed to be more or less equal in length and do not have these spots when they are young the same was the case in large sized animals up to the size of about 20 mm. These spots also. develop as the animal grows and it becomes prominent and larger in size with age. Females do not have these spots but start to develop DISCUSSION them as they mature. They develop tiny spots The regression coefficient (b) value from the size 35 mm onwards. Though these or slope for fins was high with 0.9250 and spots are prominent, they are smaller in size 0.9542 respectively for males and females, compared to males of the corresponding size. which indicates that the fins grew along with Because of this anomaly there is every chance the mantle length. Low 'b' values were of sexual misidentification forth is species. observed in HL (0.3812 for males and 0.3342 A total of 88 male specimens ranging for females), HB and ED, which indicated very from 18 to 68 mm in DML with the body slow growth rate, from which it can be inferred weight ranging from 1.164 to 45.363 gms and that as the animal grew the head did not grow 88 female specimens ranging from 25 to 82 proportionately. Thus compared to older mm in DML with the bodyweight ranging from animals the younger animals head looked 3.858 to 87.857 gms were analysed for various slightly wider and bigger. The tentacles grew morphometric relationships. The results of extremely fast (b = 2.7605 for males and b = analysis of data on various body proportions 2.7615 for females) in both the sexes against DMLaregiven in Table 1.
Load more

Recommended publications
  • The Nutritional Values of Ed at Digha Coast, Wes International Journal Of
    International Journal of Trend in Scientific Research and Development (IJTSRD) International Open Access Journal ISSN No: 2456 - 6470 | www.ijtsrd.com | Volume - 1 | Issue – 6 Studies the physico-chemical parameters of water, soil and the nutritional values of edible cephalopods found at Digha coast, West Bengal, India Das Manotosh Maity Joydev Research Scholar, Department of Aquaculture Assistant Professor, Department of Aquaculture Management & Technology, Vidyasagar University, Management & Technology, Vidyasagar University, Midnapore, West Bengal, India. Midnapore, West Bengal, India Fishery Field Assistant, Department of Fishery, Government of West Bengal ABSTRACT India is a high speed population growing country and Keywords: Bio-diversity, Cephalopods, Digha Coast, present population of India is about 127 crores. Ecosystem, Molluscs, Nutritional Values Among them a huge number of our children have been suffering from mal-nutritional diseases. They need protein feed and molluscs meat especially INTRODUCTION cephalopods meat is a good source of protein. India harvested 1.73 lakh tones of cephalopods, 0.04 lakh The word ‘Mollusca’ is a Latin word which means tones of bivalves and 0.02 tones of gastropods from ‘soft’. Aristotle is the father of the word ‘Mollusca’. Indian marine resources like Arabian sea, Bay of Molluscs are benthic organisms that live on or in, the Bengal and Indian Ocean in the year 2013-2014. The bottom of the water body with greater than 1.0 mm in people of southern states of India consume molluscs size. Its body is made up of head, visceral mass and meat in huge quantity as their everyday protein locomotory or digging foot, epidermis is forming resource food.
    [Show full text]
  • Is Sepiella Inermis ‘Spineless’?
    IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS) e-ISSN:2278-3008, p-ISSN:2319-7676. Volume 12, Issue 5 Ver. IV (Sep. – Oct. 2017), PP 51-60 www.iosrjournals.org Is Sepiella inermis ‘Spineless’? 1 Visweswaran B * 1Department of Zoology, K.M. Centre for PG Studies (Autonomous), Lawspet Campus, Pondicherry University, Puducherry-605 008, India. *Corresponding Author: Visweswaran B Abstract: Many a report seemed to project at a noble notion of having identified some novel and bioactive compounds claimed to have been found from Sepiella inermis; but lagged to log their novelty scarcely defined due to certain technical blunders they seem to have coldly committed in such valuable pieces of aboriginal research works, reported to have sophistically been accomplished but unnoticed with considerable lack of significant finesse. They have dealt with finer biochemicals already been reported to have been available from S.inermis; yet, to one’s dismay, have failed to maintain certain conventional means meant for original research. This quality review discusses about the illogical math rooting toward and logical aftermath branching from especially certain spectral reports. Keywords: Sepiella inermis, ink, melanin, DOPA ----------------------------------------------------------------------------------------------------------------------------- ---------- Date of Submission: 16-09-2017 Date of acceptance: 28-09-2017 ----------------------------------------------------------------------------------------------------------------------------- ---------- I. Introduction Sepiella inermis is a demersally 1 bentho-nektonic 2, Molluscan, cephalopod ‗spineless‘ cuttlefish species, with invaluable juveniles 3, from the megametrical Indian coast 4-6, as incidental catches in shore seine 7 & 8, as egg clusters 9 from shallow waters 1 after monsoon at Vizhinjam coast 10 and Goa coast 11 of India and sundried, abundantly but rarely 8. II.
    [Show full text]
  • Reproductive Behavior of the Japanese Spineless Cuttlefish Sepiella Japonica
    VENUS 65 (3): 221-228, 2006 Reproductive Behavior of the Japanese Spineless Cuttlefish Sepiella japonica Toshifumi Wada1*, Takeshi Takegaki1, Tohru Mori2 and Yutaka Natsukari1 1Graduate School of Science and Technology, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan 2Marine World Uminonakamichi, 18-28 Saitozaki, Higashi-ku, Fukuoka 811-0321, Japan Abstract: The reproductive behavior of the Japanese spineless cuttlefish Sepiella japonica was observed in a tank. The males competed for females before egg-laying and then formed pairs with females. The male then initiated mating by pouncing on the female head, and maintained the male superior head-to-head position during the mating. Before ejaculation, the male moved his right (non-hectocotylized) arm IV under the ventral portion of the female buccal membrane, resulting in the dropping of parts of spermatangia placed there during previous matings. After the sperm removal behavior, the male held spermatophores ejected through his funnel with the base of hectocotylized left arm IV and transferred them to the female buccal area. The spermatophore transfer occurred only once during each mating. The female laid an egg capsule at average intervals of 1.5 min and produced from 36 to more than 408 egg capsules in succession during a single egg-laying bout. Our results also suggested one female produced nearly 200 fertilized eggs without additional mating, implying that the female have potential capacity to store and use active sperm properly. The male continued to guard the spawning female after mating (range=41.8-430.1 min), and repeated matings occurred at an average interval of 70.8 min during the mate guarding.
    [Show full text]
  • Surat Thani Blue Swimming Crab Fishery Improvement Project
    Surat Thani Blue Swimming Crab Fishery Improvement Project -------------------------------------------------------------------------------------------------------------------------------------- Milestone 33b: Final report of bycatch research Progress report: The study of fishery biology, socio-economic and ecosystem related to the restoration of Blue Swimming Crab following Fishery improvement program (FIP) in Bandon Bay, Surat Thani province. Amornsak Sawusdee1 (1) The Center of Academic Service, Walailak University, Tha Sala, Nakhon Si Thammarat, 80160 The results of observation of catching BSC by using collapsible crab trap and floating seine. According to the observation of aquatic animal which has been caught by main BSC fishing gears; floating seine and collapsible crab trap, there were 176 kind of aquatic animals. The catch aquatic animals are shown in the table1. In this study, aquatic animal was classified into 11 Groups; Blue Swimming Crab (Portunus Pelagicus), Coelenterata (coral animals, true jellies, sea anemones, sea pens), Helcionelloida (clam, bivalve, gastropod), Cephalopoda (sqiud, octopus), Chelicerata (horseshoe crab), Hoplocari(stomatopods), Decapod (shrimp), Anomura (hermit crab), Brachyura (crab), Echinoderm (sea cucambers, sea stars, sea urchins), Vertebrata (fish). Vertebrata was the main group that was captured by BSC fishing gears, more than 70 species. Next are Helcionelloida and Helcionelloida 38 species and 29 species respectively. The sample that has been classified were photographed and attached in appendix 1. However, some species were classified as unknow which are under the classification process and reconcile. There were 89 species that were captured by floating seine. The 3 main group that were captured by this fishing gear are Vertebrata (34 species), Brachyura (20 species) Helcionelloida and Echinoderm (10 Species). On the other hand, there were 129 species that were captured by collapsible crab trap.
    [Show full text]
  • Os Nomes Galegos Dos Moluscos 2020 2ª Ed
    Os nomes galegos dos moluscos 2020 2ª ed. Citación recomendada / Recommended citation: A Chave (20202): Os nomes galegos dos moluscos. Xinzo de Limia (Ourense): A Chave. https://www.achave.ga /wp!content/up oads/achave_osnomesga egosdos"mo uscos"2020.pd# Fotografía: caramuxos riscados (Phorcus lineatus ). Autor: David Vilasís. $sta o%ra est& su'eita a unha licenza Creative Commons de uso a%erto( con reco)ecemento da autor*a e sen o%ra derivada nin usos comerciais. +esumo da licenza: https://creativecommons.org/ icences/%,!nc-nd/-.0/deed.g . Licenza comp eta: https://creativecommons.org/ icences/%,!nc-nd/-.0/ ega code. anguages. 1 Notas introdutorias O que cont!n este documento Neste recurso léxico fornécense denominacións para as especies de moluscos galegos (e) ou europeos, e tamén para algunhas das especies exóticas máis coñecidas (xeralmente no ámbito divulgativo, por causa do seu interese científico ou económico, ou por seren moi comúns noutras áreas xeográficas) ! primeira edición d" Os nomes galegos dos moluscos é do ano #$%& Na segunda edición (2$#$), adicionáronse algunhas especies, asignáronse con maior precisión algunhas das denominacións vernáculas galegas, corrixiuse algunha gralla, rema'uetouse o documento e incorporouse o logo da (have. )n total, achéganse nomes galegos para *$+ especies de moluscos A estrutura )n primeiro lugar preséntase unha clasificación taxonómica 'ue considera as clases, ordes, superfamilias e familias de moluscos !'uí apúntanse, de maneira xeral, os nomes dos moluscos 'ue hai en cada familia ! seguir
    [Show full text]
  • Bioaccumulation of Heavy Metals in Cuttlefish Sepiella Inermis from Visakhapatnam Coastal Waters
    International Journal of Science and Research (IJSR) ISSN: 2319-7064 Index Copernicus Value (2016): 79.57 | Impact Factor (2017): 7.296 Bioaccumulation of Heavy Metals in Cuttlefish Sepiella Inermis from Visakhapatnam Coastal Waters R.Rekha1, B. Ganga Rao2 1Department of Foods, Nutrition & Dietetics, Andhra University, Visakhapatnam-530 003, India 2Professor, Department of Pharmaceutical Sciences, Andhra University, Visakhapatnam-530 003, India Abstract: This study investigates 9 elements both essential (Cr, Cu, Zn, Fe, Mn and Ni) and non essential (Cd, Hg and Pb) in the tissues and whole of the cuttlefish Sepiella inermis caught off Visakhapatnam coast (east coast of India, Bay of Bengal). The level of elements was determined by atomic absorption spectrophotometry (AAS). The concentration ranges found for these heavy metals, expressed on a wet weight basis, were as follows: Hg, Cd, Pb, Cu, Zn, Fe, Mn, Cr, and Ni concentrations in cuttlefish muscle samples were 0.01 - 0.07, 0.11-0.67, 0.11-1.14, 0.52-6.08, 4.82-19.32, 0.08-5.84, 0-0.49 and 0-2.11, 0-0.92 ppm respectively. As for other cephalopod species, the liver showed the highest concentrations of many elements highlighting their role in bioaccumulation and detoxification processes. The mean values of highly hazardous metals in the muscle of the Sepiella inermis, were: Hg = 0.04, Cd = 0.481, Pb = 0.525, Cr = 0.662, all within the international safety limits. The level of contamination in Sepiella inermis by these heavy metals is compared to those studied in other parts of the world and the legal standards set by international legalizations.
    [Show full text]
  • ASFIS ISSCAAP Fish List February 2007 Sorted on Scientific Name
    ASFIS ISSCAAP Fish List Sorted on Scientific Name February 2007 Scientific name English Name French name Spanish Name Code Abalistes stellaris (Bloch & Schneider 1801) Starry triggerfish AJS Abbottina rivularis (Basilewsky 1855) Chinese false gudgeon ABB Ablabys binotatus (Peters 1855) Redskinfish ABW Ablennes hians (Valenciennes 1846) Flat needlefish Orphie plate Agujón sable BAF Aborichthys elongatus Hora 1921 ABE Abralia andamanika Goodrich 1898 BLK Abralia veranyi (Rüppell 1844) Verany's enope squid Encornet de Verany Enoploluria de Verany BLJ Abraliopsis pfefferi (Verany 1837) Pfeffer's enope squid Encornet de Pfeffer Enoploluria de Pfeffer BJF Abramis brama (Linnaeus 1758) Freshwater bream Brème d'eau douce Brema común FBM Abramis spp Freshwater breams nei Brèmes d'eau douce nca Bremas nep FBR Abramites eques (Steindachner 1878) ABQ Abudefduf luridus (Cuvier 1830) Canary damsel AUU Abudefduf saxatilis (Linnaeus 1758) Sergeant-major ABU Abyssobrotula galatheae Nielsen 1977 OAG Abyssocottus elochini Taliev 1955 AEZ Abythites lepidogenys (Smith & Radcliffe 1913) AHD Acanella spp Branched bamboo coral KQL Acanthacaris caeca (A. Milne Edwards 1881) Atlantic deep-sea lobster Langoustine arganelle Cigala de fondo NTK Acanthacaris tenuimana Bate 1888 Prickly deep-sea lobster Langoustine spinuleuse Cigala raspa NHI Acanthalburnus microlepis (De Filippi 1861) Blackbrow bleak AHL Acanthaphritis barbata (Okamura & Kishida 1963) NHT Acantharchus pomotis (Baird 1855) Mud sunfish AKP Acanthaxius caespitosa (Squires 1979) Deepwater mud lobster Langouste
    [Show full text]
  • DNA Barcoding Reveal Patterns of Species Diversity Among
    www.nature.com/scientificreports OPEN DNA barcoding reveal patterns of species diversity among northwestern Pacific molluscs Received: 04 April 2016 Shao’e Sun, Qi Li, Lingfeng Kong, Hong Yu, Xiaodong Zheng, Ruihai Yu, Lina Dai, Yan Sun, Accepted: 25 August 2016 Jun Chen, Jun Liu, Lehai Ni, Yanwei Feng, Zhenzhen Yu, Shanmei Zou & Jiping Lin Published: 19 September 2016 This study represents the first comprehensive molecular assessment of northwestern Pacific molluscs. In total, 2801 DNA barcodes belonging to 569 species from China, Japan and Korea were analyzed. An overlap between intra- and interspecific genetic distances was present in 71 species. We tested the efficacy of this library by simulating a sequence-based specimen identification scenario using Best Match (BM), Best Close Match (BCM) and All Species Barcode (ASB) criteria with three threshold values. BM approach returned 89.15% true identifications (95.27% when excluding singletons). The highest success rate of congruent identifications was obtained with BCM at 0.053 threshold. The analysis of our barcode library together with public data resulted in 582 Barcode Index Numbers (BINs), 72.2% of which was found to be concordantly with morphology-based identifications. The discrepancies were divided in two groups: sequences from different species clustered in a single BIN and conspecific sequences divided in one more BINs. In Neighbour-Joining phenogram, 2,320 (83.0%) queries fromed 355 (62.4%) species-specific barcode clusters allowing their successful identification. 33 species showed paraphyletic and haplotype sharing. 62 cases are represented by deeply diverged lineages. This study suggest an increased species diversity in this region, highlighting taxonomic revision and conservation strategy for the cryptic complexes.
    [Show full text]
  • Nom Français
    CODE Nom Français Nom scientifique Nom Anglais Famille Ordre KCP Abadèche du Cap Genypterus capensis Kingklip Ophidiidae OPHIDIIFORMES CUB Abadèche noir Genypterus maculatus Black cusk-eel Ophidiidae OPHIDIIFORMES CUS Abadèche rosé Genypterus blacodes Pink cusk-eel Ophidiidae OPHIDIIFORMES CUC Abadèche rouge Genypterus chilensis Red cusk-eel Ophidiidae OPHIDIIFORMES OFZ Abadèche sans jambes Lamprogrammus exutus Legless cuskeel Ophidiidae OPHIDIIFORMES CEX Abadèches nca Genypterus spp Cusk-eels nei Ophidiidae OPHIDIIFORMES OPH Abadèches, brotules nca Ophidiidae Cusk-eels, brotulas nei Ophidiidae OPHIDIIFORMES ALR Ablette Alburnus alburnus Bleak Cyprinidae CYPRINIFORMES ZML Acanthure à pierreries Zebrasoma gemmatum Spotted tang Acanthuridae ACANTHUROIDEI ZLV Acanthure à queue jaune Zebrasoma xanthurum Yellowtail tang Acanthuridae ACANTHUROIDEI MPS Achigan à grande bouche Micropterus salmoides Largemouth black bass Centrarchidae PERCOIDEI LQT Acmée râpe Lottia limatula File limpet Lottiidae GASTROPODA ISA Acoupa aile-courte Isopisthus parvipinnis Bigtooth corvina Sciaenidae PERCOIDEI WEW Acoupa blanc Atractoscion nobilis White weakfish Sciaenidae PERCOIDEI YNV Acoupa cambucu Cynoscion virescens Green weakfish Sciaenidae PERCOIDEI WKK Acoupa chasseur Macrodon ancylodon King weakfish Sciaenidae PERCOIDEI WEP Acoupa du Pérou Cynoscion analis Peruvian weakfish Sciaenidae PERCOIDEI YNJ Acoupa mongolare Cynoscion jamaicensis Jamaica weakfish Sciaenidae PERCOIDEI SWF Acoupa pintade Cynoscion nebulosus Spotted weakfish Sciaenidae PERCOIDEI WKS Acoupa
    [Show full text]
  • Studies on Some Aspects Oflandings,Utilization and Export of Commercially Important Cephalopods
    Studies on Some Aspects ofLandings, Utilization and Export of Commercially Important Cephalopods Thesis submitted to Cochin University of Science and Technology in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY By JOHN MOHAN School of Industrial Fisheries Cochin University of Science and Technology Cochin — 682 O16 April 2007 Certificate This is to certify that the thesis entitled “Studies on Some Aspects of Landings, Utilization and Export of Commercially Important Cephalopods” is a bonafide record of the research wcrk carried cut by Sri. John Mohan under my supervision and guiaance in the School of Industrial Fisheries, Cochin University of Science * id Technoivgy in partial fulfillment of the requirements for the degree of ' Q f Doctor of Philosophy of the Cochin University of SCi€m,€ ani Technology and no part thereof has been presented before _fL ' any other degree. Qa/xqéiwtfi AprilKochi -2007. 16 Prof. Supervising L ". M. Shahul Guide Hameed DECLARATION This is to certify that the thesis entitled “Studies on Some Aspects of Landings, Utilization and Export of Commercially Important Cephalopods” is an authentic record of the research work carried out by me under the supervision of Prof. (Dr). M. Shahul Hameed, Retd. Director, School of Industrial Fisheries, Cochin University of Science of Technology in partial-fulfillment of the requirements for the Ph.D degree of Cochin University of Science and Technology and no part of it has previously form.ed the basis for award of any degree in any University AprilKochi 2007 - 682016John Mohan \ ACKNOWLEDGEMENT I Wish to place on record my gratitude to Prof.
    [Show full text]
  • Cephalopods As Predators: a Short Journey Among Behavioral Flexibilities, Adaptions, and Feeding Habits
    REVIEW published: 17 August 2017 doi: 10.3389/fphys.2017.00598 Cephalopods as Predators: A Short Journey among Behavioral Flexibilities, Adaptions, and Feeding Habits Roger Villanueva 1*, Valentina Perricone 2 and Graziano Fiorito 3 1 Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain, 2 Association for Cephalopod Research (CephRes), Napoli, Italy, 3 Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Napoli, Italy The diversity of cephalopod species and the differences in morphology and the habitats in which they live, illustrates the ability of this class of molluscs to adapt to all marine environments, demonstrating a wide spectrum of patterns to search, detect, select, capture, handle, and kill prey. Photo-, mechano-, and chemoreceptors provide tools for the acquisition of information about their potential preys. The use of vision to detect prey and high attack speed seem to be a predominant pattern in cephalopod species distributed in the photic zone, whereas in the deep-sea, the development of Edited by: Eduardo Almansa, mechanoreceptor structures and the presence of long and filamentous arms are more Instituto Español de Oceanografía abundant. Ambushing, luring, stalking and pursuit, speculative hunting and hunting in (IEO), Spain disguise, among others are known modes of hunting in cephalopods. Cannibalism and Reviewed by: Francisco Javier Rocha, scavenger behavior is also known for some species and the development of current University of Vigo, Spain culture techniques offer evidence of their ability to feed on inert and artificial foods. Alvaro Roura, Feeding requirements and prey choice change throughout development and in some Institute of Marine Research, Consejo Superior de Investigaciones Científicas species, strong ontogenetic changes in body form seem associated with changes in (CSIC), Spain their diet and feeding strategies, although this is poorly understood in planktonic and *Correspondence: larval stages.
    [Show full text]
  • Studies on Mollusca of Saurashtra Coast - 3
    Studies on mollusca of Saurashtra coast - 3. Composition Item Type article Authors Sarvaiya, R.T. Download date 24/09/2021 14:37:04 Link to Item http://hdl.handle.net/1834/33748 0 F T n POS R. T. SARVAIYA Marine Biological Research Station, Port Okha-361 350 The paper presents the seasonal variations in moisture, protein, salt and ash in the meat of Murex virgineus, Solen sp., Loligo sp., Sepiella inermis and Octopus sp. Moisture and fat contents of twenty two species of mo11usca are reported. Inverse relationship between protein and ash has been observed. Cephalopoda recorded higher meat, moisture and protein cont­ ents than amphineura, gastropoda and pelecypoda. Pelecypoda contains higher fat than amphineura, gastropoda and cephalopoda. INTRODUCTION ation in the chemical comr;osition of five species and that in moisture and 'fat contents Common marine gastropod, Murex in twenty two species of mollusca. virgineus of theo Gulf of Kutch is consumed mostly by people of low income group. The MATERIALS AND METHODS razor clam, Solen sp., available throughout the year in the Gulf of Kutch, on the north­ Several specimens of mollusca as given ern side of Gopi near Okha Port is consum­ in Table I and n Wele collected from various ed partly as food and partly as bait for long centres of Saurashtra. Fresh specimens lining in Maharashtra region (Nagappan were used for the study. Nayar and Mahadevan, 1974) Surya­ narayanan, Shylaj:t Kumari and Alexander Individual specimens were measured (1973) have suggested exploitation of four and weighed after cleaning, washing and moHuscs including two species of cephalo­ removing adhering water with filter paper.
    [Show full text]