Academic literature on the topic 'Metapenaeus monoceros'

Dried shrimp has some special advantageous such as long shelf-life, high nutritional content, and ease of transportation considered as a healthy choice of food. The nutritional properties of three common and demandable dried shrimp species available in Jashore, Bangladesh were evaluated. The moisture content of dried Palaemon karnafuliensis, Metapenaeus Monoceros and Ferapenaeus indicus was determined 19.7±0.40%, 20.5±0.25% and 24.9±0.21%, respectively. The protein content was found 57.46±5.88%, 62.5±1.98%, and 55.5±1.85% in Palaemon karnafuliensis, Metapenaeus Monoceros, and Ferapenaeus indicus, respectively. The ash and fat content of Palaemon karnafuliensis, Metapenaeus Monoceros and Ferapenaeus indicus were observed 12.20±0.90% and 1.90±0.15%, 10.20±0.39% and 1.48±0.32%, 8.57±1.43%, and 1.08±0.21%, respectively. Total saturated fatty acids content was found 31.56%, 29.21%, 38.59 in Palaemon karnafuliensis, Metapenaeus monoceros, and Ferapenaeus indicus, respectively. The polyunsaturated fatty acids was found 42.60%, 42.29%, and 37.80% in Palaemon karnafuliensis, Metapenaeus monoceros, and Ferapenaeus indicus, respectively. There were nine non-essential and eight essential amino acids found in the dried shrimp products. Glutamine, proline, glycine and alanine were dominated among the non-essential amino acid. Lysine was found a significant amount in the study. All the three dried shrimp products were considered as highly nutritive and less fat value which is considered healthy for the consumers. Asian J. Med. Biol. Res. 2021, 7 (2), 138-146

Abstract The present study identified useful characters in the discrimination of species of the genus Metapenaeus, viz., Metapenaeus affinis, M. alcocki, M. brevicornis, M. dobsoni, M. kutchensis, M. monoceros and M. moyebi, in Indian waters, on the basis of morphometric and molecular studies. Out of 40 morphometric measurements, a correlation matrix of 14 morphometric measurements: carapace width, carapace depth, length of rostrum, of antennular peduncle, of telson, and of 6th abdominal somite; 6th abdominal somite depth, antennal scale length, merus length of 1st pereopod, movable finger length of 1st pereopod, movable finger length of 2nd pereopod, movable finger length of 3rd pereopod, merus length of 5th pereopod, and carpus length of 5th pereopod, were all found to be important in discriminating those seven species. The generated classification matrix showed 100% accurate classification of six species, except M. kutchensis (87.09%). DNA barcodes (588 bp) were generated for Metapenaeus brevicornis, M. dobsoni, M. ensis, M. kutchensis and M. monoceros. A simple identification key is thus proposed for nine species of Metapenaeus from Indian waters.

Seasonal fatty acid profiles of Penaeus semisulcatus and Metapenaeus monoceros were investigated. Palmitic (16:0), stearic acid (18:0), oleic (18:1), palmitooleic acid (16:1), arachidonic acid (20:4), eicosapentaenoic (EPA, 20:5 n-3) and docosahexaenoic acid (DHA, 22:6 n-3) were found to be the most abundant fatty acids in both shrimp species. Fatty acid profile showed seasonal changes. The highest EPA DHA contents were recorded during winter (January) in both species.

The in vitro study was carried out on the release of active ingradient theophylline from granules prepared by moist granulation method. The granule matrix was prepared from the mixture of chitosan isolated from SwaIIo shrimp (Metapenaeus monoceros) (in accordance with the Protan Laboratories, Inc standard requirement) and methylceliuiose 1500 cps. The granules were filled into 850 mg capsules containing 200 mg theophylline. The maximum weight of chitosan and methylcellulose for each capsule was determined by factorial design 22.The result showed that, when the amount of chitosan was kept constant, an increase in the amount of methylcellulose will increase the release rate of theophylline from granules. The optimum weight of chitosan and methyIceIIuIose are 609.24 mg and 20.00 mg, respectively for one capsule.

Correction: Table 1 and Table 2 were omitted in from the PDF of this article. On 29th April 2015 the two tables were included in the PDF and the page numbers were changed from 151-158 to 151-160.Eight groups of zooplankton were found at Sitakunda coast, Chittagong, northeastern part of the Bay of Bengal during January to June 2007. The identified groups were Appendicularia (2.46%), Chaetognatha (2.45%), Cladocera (2.31%), Copepoda (26.05%), Ctenophora (5.86%), Crustacean zooplankton (21.64%), Ichthyoplankton (17.77%) and Meroplankton (21.45%). Abundance of zooplankton varied from 413 to 7730 individuals/m3.Mangrove vegetate area (station- VI) has the highest abundant possibly due to the organic and inorganic matters dissolved in the water while ship breaking area (station- IV) has the lowest abundant. Zooplankton population was significantly (p>0.05) higher in the mangrove vegetate area than the fishermen community area and ship breaking area. The mangrove vegetate area has the highest composition (57.06%) of zooplankton than the fishers community area and ship breaking area (29.77% and 13.16%, respectively). Calanus sp. (12.29%) belonging to Copepods and fish eggs (9.25%) belonging to Ichthyoplankton were the most abundant and Oikopleura albicans (0.66%) from Appendicularia, Metapenaeus brevicornis (0.71%) and Metapenaeus monoceros (0.90%) belonging to Crustacean larvae were the lowest abundant species found at three major investigated area.Res. Agric., Livest. Fish.2(1): 151-160, April 2015

Thesis (MSc)--Stellenbosch University, 2013.
ENGLISH ABSTRACT: Comparative analyses of genetic diversity, population structure and evolutionary relationships among co–distributed species can provide useful insights into fisheries management. In this study, mitochondrial DNA control region (mtCR) sequences were used to investigate genetic population structure and recruitment patterns of three co–occurring shallow water penaeid prawn species; Penaeus monodon, Fenneropenaeus indicus and Metapenaeus monoceros. These taxa dominate artisanal and commercial prawn catches in the Malindi–Ungwana Bay in Kenya, where juvenile prawns inhabit estuarine habitats, and adults occur further offshore, on mudbanks in the bay. A total of 296 [i.e. (P. monodon; n = 129), (F. indicus; n = 96), (M. monoceros; n = 71)] specimens were sampled from five sites; two estuarine nursery areas (juveniles), a nearshore mid–station (adults), and two offshore areas (adults). The sites were chosen to represent the bulk of the Kenyan fishery activities, and to include juvenile and adult cohorts that are presumably connected to each other through larval dispersal processes and migrations. Juveniles were obtained during 2010 from local fishermen, and adult prawns during 2011 using a commercial prawn trawler. Analysis of the mtCR sequences indicated high haplotype diversity (P. monodon; h = 0.9996 ± 0.0010; F. indicus; h = 0.9998 ± 0.0015; M. monoceros; h = 0.9815 ± 0.0110) for all three species. Genetic differentiation results for each species using AMOVA indicated no significant population differentiation (P. monodon; ΦST = 0.000, = p > 0.05; F. indicus; ΦST = 0.000, = p > 0.05; M. monoceros; ΦST = 0.0164, = p > 0.05) and pairwise ΦST statistics among sampling sites indicated the complete absence of spatial differentiation of female genes for all three species. In addition, the mtDNA data of P. monodon (i.e. n = 103) was augmented by using six polymorphic nuclear microsatellite loci. The pattern of panmixia was supported by the microsatellite analyses of P. monodon where AMOVA (i.e. RST = 0.00113, = p > 0.05), pairwise RST statistics (i.e. RST = 0.0000–0.0223, = p > 0.05) and STRUCTURE all confirmed the complete absence of genetic differentiation, among all sampled localities. Based on the absence of genetic population structure, each of the three species can be regarded as a single management unit throughout the Malindi–Ungwana Bay area. Spatial management strategies for prawn fisheries in the bay should therefore rely on factors other than genetic metapopulations, such as seasonal prawn recruitment and distribution patterns, ecosystem functioning and socio–economic implications to fishing communities and commercial trawl fishing companies.
AFRIKAANSE OPSOMMING: Vergelykende analise van genetiese diversiteit, bevolkings stuktuur en evolutionêre verwantskappe tussen spesies wat 'n verspreidingsgebied deel kan nuttige insigte lewer oor vissery bestuur. In hierdie studie was die mitokondriale DNS kontrole area (mtCR) volgordebepalings gebruik om die bevolkings genetiese stuktuur en werwingspatrone van drie mede-verspreide vlak water penaeid garnaal spesies; Penaeus monodon, Fenneropenaeus indicus and Metapenaeus monoceros te ondersoek. Hierdie taksa domineer die ambagtelike en kommersiële vangste in die Malindi-Ungwanabaai in Kenya waar, onvolwasse garnale in riviermondings voorkom en volwassenes in dieper waters op modderbanke in die baai voorkom. 'n Totaal van 296 [(P. monodon; n = 129), (F. indicus; n = 96), (M. monoceros; n = 71)] monsters was geneem vanaf vyf lokaliteite; twee in riviermondings (onvolwassenes), 'n nabykus mid stasie (volwasse) en twee diep water (volwasse) areas. Hierdie lokaliteite was gekies om die oorgrote meerderheid van Kenya se vissery aktiwiteite, asook die onvolwasses en volwassene kohorte te verteenwoordig wat vermoedelik geneties verbind is aan mekaar deur larwale verspreidingsprosesse en migrasies. Onvolwasse diere was verkry in 2010 vanaf plaaslike vissermanne en volwasse diere was in 2011 gekollekteer deur gebruik te maak van 'n kommersiële garnaal vissersboot. Analise van die mtCR volgorde bepaling het gewys dat daar 'n hoë haplotipiese diversiteit (P. monodon; h = 0.9996 ± 0.0010; F. indicus; h = 0.9998 ± 0.0015; M. monoceros; h = 0.9815 ± 0.0110) vir al drie spesies bestaan. Genetiese differensiasie resultate vir elke spesie, bepaal deur 'n AMOVA toets, dui op geen beduidende bevolking differensiasie nie (P. monodon; ΦST = 0.000, = p > 0.05; F. indicus; ΦST = 0.000, = p > 0.05; M. monoceros; ΦST = 0.0164, = p > 0.05) en paarsgewyse ΦST statistiek tussen die lokaliteite waar monsters geneem was, dui op geen ruimtelike differensiasie van die vroulike gene in al drie spesies nie. Hierbenewens is die mtDNS datastel van P. monodon (i.e. n = 103) uitgebrei deur ses polimorfiese kern mikrosatelliete in te sluit. Die patroon van mtCR panmixia was ondersteun deur die mikro-satelliet analise van P. monodon waar die AMOVA (i.e. RST = 0.00113, = p > 0.05), paarsgewyse RST statistiek (i.e. RST = 0.0000-0.0223, = p > 0.05) en STRUCTURE bevestig het dat daar totale afwesigheid is van genetiese differensiasie tussen alle vergelyk-te lokaliteite. Gebaseer op die afwesigheid van genetiese bevolking-struktuur kan elk van die drie spesies beskou word as 'n enkele bestuurseenheid deur die Malindi-Ungwanabaai area. Die bestuurstrategieë vir garnaal vissery aktiwiteite in die baai moet dus steun op ander faktore as genetiese meta-bevolking. Belangrike faktore om in ag te neem is seisoenale garnaal werwing en verspreidings patrone, ekosisteem funksionering en sosio-ekonomiese implikasies van vissers gemeenskappe en kommersiële visserymaatskappye.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
The penaeid shrimp (Crustacea, Decapoda, Penaeidae) are the most economically fishing resource of the greatest global importance both for fisheries and the aquaculture industry. Shrimp fishing is one of the pillars of national economy in Mozambique, where they provide around USD 80,000,000 per year in export earnings. In recent years there has been observing a reduction in the shrimp fishery industry probably due the over-exploitation or due the presence of other shrimp species that were not been observed on the coast Mozambique before which may competing for the ecological niche. Despite the great fishing economic importance of penaeid shrimps in Mozambique, there is no genetic scientific literature available thus far on their genetic characteristics. Therefore, this is the first work addressing the genetic diversity of penaeids species of greatest economic value from Mozambique coast F. indicus and M. monoceros, for the first time shrimp from this coast were identified using DNA Barcoding tool. In addition, for the first time sequences of penaeid shrimp from Mozambique coast were deposited in GenBank and Bold system. The objective of this study was to evaluate the genetic diversity and population structure of the species F. indicus and M. monoceros, and identify nine species of penaeids from the Mozambican coast. To assess the genetic diversity and structure of F. indicus and M. monoceros, 160 samples were collected along the Mozambique coast. Three mitochondrial genes (COI, Cyt b, and the control region D-loop) were analyzed. A great genetic diversity was observed, however, the D-loop presented higher values (F. indicus: Hd = 1, h = 13; Hi = 0.0133, M. monoceros Hd = 0,99; H-24; and Hi = 0.0092). D-loop showed unique haplotypes; the Tajima D test and Fu Fs values were negative and significant for the COI and Cyt b genes. The mismatch distribution curves suggested that the two espéceis undergone to a recent population expansion (10.397 to 28.418) years ago F. indicus and M. monoceros respectively. The AMOVA analysis showed that over 99% of the variation occurs within populations. The Fst Pairwise values pointed to a non structured population. The nature of ocean currents along the Mozambique channel as well as the complete absence of physical and / or environmental barriers may be the main factors that influence the non structure of these two species. To identify shrimp penaeids from Mozambique based on DNA barcondig, a total of 69 samples were collected in the Maputo Bay. The genetic distance tree grouped six species into two clades as to the place of origin, suggesting the presence of cryptic species. The intraspecific genetic distance ranged from (0 to 8.636) and interspecific distance from (3.897 to 21.558). The distance distribution analysis 10 of the nearest neighbor ranged from (3.897-18.971). The DNA Barcoding identification tool was efficient to identify the Penaeid species from mozambican coast. However the presence of cryptic species pointed the need for further studies which must be conducted using molecular analyzes; morphological taxonomy and the ecological treats to evaluate each of the sibling species to reach a correct decision of the taxonomic status.
Os camarões peneídeos (Crustacea, Decapoda, Penaeidae) constituem um recurso pesqueiro de grande importância econômica mundial tanto para a indústria pesqueira quanto para a aquicultura. Em Moçambique, a indústria pesqueira constitui uma das bases da sua economia, onde a pesca do camarão chega a render cerca de 80 milhões de dólares anuais. Nos últimos anos, tem-se verificado uma redução na pesca do camarão, provavelmente devido à sobrexplotação e à presença de espécies exóticas. Este é o primeiro estudo genético envolvendo as espécies de maior valor econômico de Moçambique. O objetivo deste estudo foi avaliar a diversidade genética e a estrutura populacional das espécies Fenneropeaneus indicus e Metapenaeus monoceros e identificar através do DNA barcoding nove espécies de camarão peneídeo. Para avaliar a diversidade e a estrutura genética de F. indicus e M. monoceros, foram coletadas 160 amostras ao longo da costa de Moçambique e analisados os genes mitocondriais COI (citocromo oxidase subunidade 1), Cyt b (citocromo oxidase subunidade b) e a região controle D-loop. Foi observada uma alta diversidade genética, sendo que o D-loop apresentou os valores mais elevados (F. indicus: Hd=1; h=13; Hi=0,0133; M. monoceros: Hd=0,99; h=24; e Hi=0,0092). O D-loop apresentou haplótipos únicos. Os valores do teste D de Tajima e Fs de Fu foram negativos e significativos para os genes COI e Cyt b. As curvas de distribuição mismatch sugeriram que as duas espécies passaram por uma expansão populacional recente de 10,397 e 28,418 anos para F. indicus e M. monoceros, respectivamente. A AMOVA referente aos genes COI e Cyt b mostrou que mais de 99% da variação ocorre dentro das populações. Os valores de FST par a par indicaram não haver estruturação populacional. A natureza das correntes marinhas ao longo do canal de Moçambique, bem como a ausência completa de barreiras físicas e/ou ambientais podem ser os principais fatores que influenciam a manutenção destas duas espécies como populações únicas. Para a identificação dos peneídeos de Moçambique com base no DNA barcondig, um total de 69 amostras foi coletado na Baía de Maputo. A árvore de distância genética agrupou seis espécies em dois clados com relação ao lugar de origem, sugerindo a presença de duas linhagens. A distância genética intraespecífica variou de 0 a 8,636 e a distância interespecífica variou de 3,897 a 21,558. A análise da distribuição de distância para o vizinho mais próximo variou de 3, 897 a 18,971. A ferramenta de identificação DNA barcoding, foi eficiente na identificação das espécies de peneídeos da costa moçambicana.