Displaying publications 61 - 80 of 431 in total

Abstract:
Sort:
  1. Phylogeography of the Japanese scad, Decapterus maruadsi (Teleostei; Carangidae) across the Central Indo-West Pacific: evidence of strong regional structure and cryptic diversity
    Jamaludin NA, Mohd-Arshaad W, Mohd Akib NA, Zainal Abidin DH, Nghia NV, Nor SM
    Mitochondrial DNA A DNA Mapp Seq Anal, 2020 10;31(7):298-310.
    PMID: 32744461 DOI: 10.1080/24701394.2020.1799996
    The Japanese scad Decapterus maruadsi (Carangidae) is an economically important marine species in Asia but its exploitation shows signs of overfishing. To document its stock structure, a population genetic and phylogeographic study of several populations of this species from the central part of the Indo-West Pacific region was conducted using the mitochondrial cytochrome b gene. Genetic homogeneity within the Sundaland region's population, including Rosario (the Philippines) and Ranong (Andaman Sea) populations was revealed with low nucleotide diversity (π = 0.001-0.003) but high haplotype diversity (h = 0.503-0.822). In contrast, a clear genetic structure was observed between this group and the northern Vietnam populations as revealed by FST, AMOVA and SAMOVA, while the central Vietnam population of Khanh Hoa is an admixed group between the two differentiated regional populations. The neutrality and mismatch distribution analyses supported a demographic expansion of D. maruadsi in between last Pleistocene to early Holocene period which influenced present day distribution pattern. Contemporary factors such as oceanic currents and different life history traits are also believed to play significant roles in the observed population structure and biogeographical pattern. Based on these results, recommendations on how stocks of the Japanese scad should be managed are offered.
    Matched MeSH terms: Fishes/anatomy & histology; Fishes/classification*; Fishes/genetics
  2. Fulltext Gene clusters of Hafnia alvei strain FB1 important in survival and pathogenesis: a draft genome perspective
    Tan JY, Yin WF, Chan KG
    Gut Pathog, 2014;6:29.
    PMID: 25075225 DOI: 10.1186/1757-4749-6-29
    Hafnia alvei is an opportunistic pathogen involved in various types of nosocomical infections. The species has been found to inhabit food and mammalian guts. However, its status as an enteropathogen, and whether the food-inhabiting strains could be a source of gastrointestinal infection remains obscure. In this report we present a draft genome of H. alvei strain FB1 isolated from fish paste meatball, a food popular among Malaysian and Chinese populations. The data was generated on the Illumina MiSeq platform.
    Matched MeSH terms: Fishes
  3. Fulltext Mitochondrial genomes and phylogenetic relationships of Lates japonicus, Lates niloticus, and Psammoperca waigiensis (Perciformes: Latidae)
    Gan HM, Takahashi H, Hammer MP, Tan MH, Lee YP, Voss JM, et al.
    Mitochondrial DNA B Resour, 2017 Feb 06;2(1):73-75.
    PMID: 33473721 DOI: 10.1080/23802359.2017.1285206
    The complete mitochondrial genomes of four fish species of the commercially important family Latidae were sequenced using the Illumina MiSeq, thereby significantly increasing the mitogenomic resources for the family. Whole mitogenome-based phylogenetic analysis supports the monophyly of the genus Lates and more generally the family Latidae. The mitogenome sequences from this study will be useful for future assessments of the diversity within and between Lates species and studies of phylogenetic relationships within the diverse and taxonomically challenging perciform fishes.
    Matched MeSH terms: Fishes
  4. Fulltext Fish assemblages in streams subject to anthropogenic disturbances along the natchez trace parkway, Mississippi, USA
    Hashim R, Jackson DC
    Trop Life Sci Res, 2009 Dec;20(2):29-47.
    PMID: 24575177 MyJurnal
    A three-year study (July 2000 - June 2003) of fish assemblages was conducted in four tributaries of the Big Black River: Big Bywy, Little Bywy, Middle Bywy and McCurtain creeks that cross the Natchez Trace Parkway, Choctaw County, Mississippi, USA. Little Bywy and Middle Bywy creeks were within watersheds influenced by the lignite mining. Big Bywy and Middle Bywy creeks were historically impacted by channelisation. McCurtain Creek was chosen as a reference (control) stream. Fish were collected using a portable backpack electrofishing unit (Smith-Root Inc., Washington, USA). Insectivorous fish dominated all of the streams. There were no pronounced differences in relative abundances of fishes among the streams (P > 0.05) but fish assemblages fluctuated seasonally. Although there were some differences among streams with regard to individual species, channelisation and lignite mining had no discernable adverse effects on functional components of fish assemblages suggesting that fishes in these systems are euryceous fluvial generalist species adapted to the variable environments of small stream ecosystems.
    Matched MeSH terms: Fishes
  5. Fulltext Checklist of fishes at selected rivers around Bukit Merah Reservoir, Perak, Malaysia
    Nurul Fazlinda Mohd Fadzil, Amir Shah Ruddin Md Sah, Mohd Shafiq Zakeyuddin, Zarul Hazrin Hashim, Mohd Syaiful Mohammad, Khalid Puteh
    Trop Life Sci Res, 2016;27(11):79-85.
    MyJurnal
    A study was conducted at five selected rivers around Bukit Merah Reservoir,
    Perak, Malaysia for eight weeks in order to determine the fish diversity and distribution. A
    total of 28 species comprised of 9 families were identified. The study depicted that there
    were significant changes to the fish composition when compared to previous study which
    had captured 36 species due to different areas covered and different types of sampling
    gear used between both studies.
    Matched MeSH terms: Fishes
  6. Fulltext Assessment of cadmium (Cd) and lead (Pb) levels in commercial marine fish organs between wet markets and supermarkets in Klang Valley, Malaysia
    Nor Hasyimah, A.K., James Noik, V., Teh, Y.Y., Lee, C.Y., Pearline Ng, H.C.
    International Food Research Journal, 2011;18(2):795-802.
    MyJurnal
    Most investigations on heavy metals content in fish were either conducted on single markets, ports, seaside markets or direct sampling from natural habitat, and there were very few studies done on fish samples from both wet markets and supermarkets. This paper presents the assessment outcome of Cd and Pb levels in commercial fish sold between wet markets and supermarkets in Klang Valley, Malaysia. In this study, the organs of four commercial fish species (Rastrellinger kanagurta, Epinephelus sexfasciatus, Lates calcarifer, and Decapterus maruadsi) sampled from different markets within the sampling area were assessed using dry ashing-acid digestion method and Flame AAS. Results obtained concluded that Cd and Pb in fishes sampled from supermarkets are generally higher compared to wet markets, while both metals content in the edible organs fall well within the permissible limits for human consumption when compared to the Fourteenth Schedule of the Malaysian Food Regulations 1985.
    Matched MeSH terms: Fishes
  7. Fulltext Development of automatic feeding machine for aquaculture industry
    Yeoh, S.J., Taip, F.S., Endan, J., Talib, R.A., Sita Mazlina, M.K.
    Pertanika Journal of Science & Technology, 2010;18(1):-.
    MyJurnal
    Aquaculture is a growing industry with a great potential towards the contribution of the country’s total
    fish requirement. Serious efforts have been done to develop and improve the production of fish by rearing high value fish in tanks or ponds. Under the Third National Agricultural Policy (1998-2010), the target is to annually produce 1.93 million tonnes of fish worth approximately RM8.3 billion by the year 2010. Consequently, the development of an automatic fish feeding machine can be very beneficial to the growth of the aquaculture industry. This device was developed to overcome labour problems in the industry and introduce a semi-automatic process in the aquaculture industry. It has the ability to dispense dried fish food in various forms such as pellets, sticks, tablets or granules into fish tanks or ponds in a controlled manner for a stipulated time. The automatic fish feeder is controlled by a digital timer and it is capable of feeding the fish in accordance with a pre-determined time schedule without the presence of an operator, and at a feeding rate of 250g/min. The feeder can be adjusted to the desired height and conveniently moved around to be positioned adjacent to the pond or tank. Meanwhile, its hopper can be covered and easily dissembled to change the size of the hopper to accommodate different capacities of feed. This automatic fish feeder can be implemented in aquaculture system to convenience to fish culturists.
    Matched MeSH terms: Fishes
  8. Fulltext The effect of different ratios of Dory fish to tapioca flour on the linear expansion, oil absorption, colour and hardness of fish crackers
    Nurul, H., Boni, I., Noryati, I.
    International Food Research Journal, 2009;16(2):159-165.
    MyJurnal
    The objective of this study was to examine the effect of different ratios of fish to tapioca flour on the linear expansion, oil absorption, colour, and crispiness of fish crackers. Four different ratios of fish to tapioca flour were used in the formulation of the fish crackers. The results showed that protein and fat content increased with the increase in the ratio of the fish. On the other hand, linear expansion and oil absorption decreased with an increase in the ratio of the fish. Hardness also increased with the increase in the ratio of the fish. The colour measurement showed that the lightness value decreased with an increase in the ratio of fish and this decrease is seen more clearly with the fried fish crackers.
    Matched MeSH terms: Fishes
  9. Fulltext Evaluation of single reservoir performance for flood risk reduction using a developed simulation model: case study of Makhoul reservoir
    Al-Aqeeli, Yousif H., Abd Aziz, S., Wayayok, Aimrun, Badronnisa Yusuf
    Pertanika Journal of Science & Technology, 2018;26(2):571-584.
    MyJurnal
    The objectives of this study were firstly, to develop a simulation model (SM) for a single reservoir to identify the standard operating policy (SOP) of a reservoir based on a monthly operating period, and secondly, to evaluate the performance of the proposed Makhoul reservoir using a Developed Simulation Model (DSM) in reducing flood risk. This reservoir is located on the River Tigris, approximately 180 km upstream of Baghdad, Iraq. The performance of the reservoir in reducing flood risk was evaluated using two designs and records of flood waves gathered over two years. The first design was the present one, while the second was developed by increasing the operational storage to its maximum, based on the digital maps of the region. The flows downstream of the reservoir were compared, with and without the reservoir in the two years in question. Four parameters resulting from the two designs were compared: storage, surface area, elevation and power. The results suggested that the reservoir would be ineffective in reducing flood risk, but it would have the ability to provide hydroelectric power using the two designs, with the new one showing better ability at doing this. The reservoir can also serve purposes such as irrigation, fish wealth development and recreation. This DSM proved its effectiveness in evaluating the performance of the single storage system used for reservoirs.
    Matched MeSH terms: Fishes
  10. Identification of immune-related genes by analysis of spleen expressed sequence tags from the Asian seabass, Lates calcarifer
    Nurul-Yuziana Mohd-Yusof, Hoh CC, Adura Mohd-Adnan, Wan KL
    Sains Malaysiana, 2009;38.
    The Asian seabass (Lates calcarifer) is one of the most economically important aquaculture fish species in South East Asia. While the biology of the Asian seabass is widely studied, relatively little information is available at the molecular level. This lack of molecular information represents one obstacle to rapid progress in the study of immune responses particularly under aquaculture conditions. In light of this situation, we have undertaken an expressed sequence tag (EST) project on the Asian seabass spleen, the secondary lymphoid organ, for the identification of immune-related genes. A
    total of 2932 ESTs were generated and grouped into 1063 unique transcripts (UTs), which consisted of 104 consensi and 959 singletons. Of these, 51.3% (545/1063) matched to previously identified genes, while 48.7% (518/1063) showed no match. Of the 545 homologous UTs, 102 (9.6%) can be putatively identified as immune-related genes. The identification of the putative immune-related genes provides a meaningful framework in the effort to comprehend the Asian seabass immune system that may lead to an increase in the understanding of the defense mechanisms of and our abilities to
    manage this fish species.
    Matched MeSH terms: Fishes
  11. Kandungan logam berat terpilih dalam tanih dan tumbuhan Arundina graminifolia dari kawasan Lombong Pelepah Kanan, Kota Tinggi, Johor, Malaysia
    Sahibin Abd. Rahim, Zulfahmi Ali Rahman, Wan Mohd Razi Idris, Azman Hashim, Tukimat Lihan, Muhd Barzani Gasim, et al.
    Sains Malaysiana, 2009;38.
    Kajian kandungan logam berat Cd, Co, Cr, Ni, Pb, dan Zn telah dilakukan ke atas tumbuhan Arundina graminifolia daripada kawasan Lombong Pelepah Kanan, Kota Tinggi, Johor. Kandungan logam berat yang sama turut ditentukan ke atas substrata tanih di tempat di mana tumbuhan itu diambil. Kandungan logam berat dalam tiga bahagian tumbuhan iaitu akar, batang dan daun telah diekstrak secara penghadaman basah manakala kandungan logam berat tersedia dan resistan dalam tanih diekstrak dengan kaedah pengekstrakan berjujukan. Kandungan logam berat jumlah didapati dengan menjumlahkan logam berat tersedia dengan logam berat resistant. Kandungan logam berat di dalam larutan ekstrak tanih dan tumbuhan ditentukan menggunakan Spektrofotometer Serapan Atom Nyalaan. Kandungan logam berat Cd, Cr, Ni dan Pb adalah setara kandungannya dalam semua bahagian tumbuhan manakala kepekatan Co dan Zn adalah tiga hingga lima kali lebih tinggi berbanding tumbuhan kawalan. Bagi kandungan logam berat di dalam bahagian tumbuhan yang berbeza didapati kepekatan Cd adalah lebih tinggi dalam akar (2.03 mg/kg) diikuti oleh daun (1.67 mg/kg) dan batang (1.49 mg/kg). Kepekatan Co adalah lebih tinggi dalam daun (9.26 mg/kg) diikuti oleh akar (9.18 mg/kg) dan batang (6.94 mg/kg). Kepekatan Cr mengikut susunan menurun adalah akar (0.46 mg/kg) > daun (0.19 mg/kg) > batang (0.08 mg/kg). Kepekatan Ni adalah lebih tinggi dalam daun (2.78 mg/kg) diikuti oleh akar (2.71 mg/kg) dan batang (1.66 mg/kg). Kepekatan Pb mengikut susunan menurun adalah akar (10.34 mg/kg) > daun (4.18 mg/kg) > batang (3.75 mg/kg). Kepekatan Zn lebih tinggi dalam daun (44.03 mg/kg) diikuti oleh akar (32.30 mg/kg) dan batang (13.21 mg/kg). Kandungan logam berat jumlah dalam tanih adalah masing-masing 2.07-5.59 mg/kg, 8.72-39.93 mg/kg, 1.81-2.14 mg/kg, 2.66-6.87 mg/kg, 23.02-51.56 mg/kg and 0.64-2.61 mg/kg bagi Ni, Zn, Cd, Pb, Co dan Cr. Didapati bahawa kandungan fraksi tersedia dalam tanih adalah 21.9% bagi Ni, 15.3% bagi Zn, 49.9% bagi Cd, 19.3% bagi Pb, 45.7% bagi Co and 0% bagi Cr. Koefisien penyerapan biologi tumbuhan ke atas logam berat yang dikaji adalah rendah keculai bagi Zn yang nilainya lebih daripada 1. Tumbuhan ini tidak sesuai digunakan sebagai agen fitoremediasi untuk logam-logam di atas.
    Matched MeSH terms: Fishes
  12. Keberkesanan ekstrak Hylocereus polyrhizus merendahkan lipid serum dan aras MDA-TBAR hati tikus teraruh hiperkolesterolemia
    Halimah Abdullah Sani, Asmazila Baharoom, Muhammad Azam Ahmad, Isma Illyani Ismail
    Sains Malaysiana, 2009;38.
    Hiperkolesterolemia merupakan suatu keadaan yang dikaitkan dengan perubahan aras lipid serum serta peningkatan aras peroksidaan lipid. Kajian ini dilakukan untuk melihat kesan ekstrak akues isi dan kulit buah Hylocereus polyrhizus (HP) terhadap jumlah kolesterol dan trigliserid (TG) serum serta aras malonaldehid (MDA-TBAR) hati tikus teraruh hiperkolesterolemia. Tikus Sprague dawley jantan diaruh menjadi hiperkolesterolemia dengan pemberian diet rat chow bersama 15% minyak sapi selama 8 minggu dan 0.02 g kolesterol secara suap paksa dua kali seminggu. Tikus-tikus diberi perlakuan ekstrak isi dan kulit buah HP, 300 mg/kg secara suap paksa selama 10 hari. Hasil menunjukkan aras kolesterol menurun secara signifikan (p<0.05) pada kedua-dua kumpulan hiperkolesterolemia yang diberi rawatan ekstrak isi dan kulit buah HP sebanyak 43.53% dan 51.36% berbanding tikus kawalan hiperkolesterolemia. Aras TG menunjukkan penurunan secara signifikan (p<0.05) sebanyak 38.0% bagi kumpulan tikus yang diberi rawatan ekstrak isi dan 42.98% bagi rawatan dengan ekstrak kulit buah HP. Peningkatan aras MDA-TBAR hati telah direncat dengan penurunan aras MDA-TBAR sebanyak 56.85% bagi kumpulan tikus yang diberi ekstrak kulit serta sedikit penurunan iaitu 10.27% bagi tikus yang diberi ekstrak isi berbanding tikus kawalan hiperkolesterolemia. Kajian ini menunjukkan bahawa kedua-dua ekstrak akues isi dan kulit buah HP merendahkan aras lipid serum serta aras MDA-TBAR hati pada tikus teraruh hiperkolesterolemia. Walau bagaimanapun, kesan ekstrak kulit lebih jelas berbanding ekstrak isi yang mungkin disebabkan oleh kandungan betasianin yang lebih tinggi dalam kulit berbanding isi buah HP.
    Matched MeSH terms: Fishes
  13. Taxonomic diversity of paradise threadfin polynemus paradiseus (Linnaeus, 1758) inhabiting southern coastal rivers in Bangladesh
    Muhammad Abu Bakar Siddik, Md. Reaz Chaklader, Ashfaqun Nahar
    Sains Malaysiana, 2015;44:1241-1248.
    The study was aimed to determine the variation in taxonomic diversity of Polynemus paradiseus based on morphometric and meristic analyses of samples collected from three coastal rivers of Bangladesh (Payra, Tentulia and Kirtonkhola). A total of 105 individuals ranging at 10-20 cm in total length (TL) and 7.91-60.64 g in body weight (BW) were sampled using Been nets and Kachal and Veshal nets. Significant differences were observed in 24 out of 25 morphometric measurements and 6 out of 10 meristic counts among the populations. In morphometric measurements, the first discriminant function (DF1) was accounted for 78.6% and the second discriminant function (DF2) was accounted for 21.4% of among groups variability, explaining 100% of total among group variability. A dendrogram based on morphometric data showed that the Tentulia and Kirtankhola populations showed high degree of overlapping and these two populations were highly different from Payra river population. The canonical graph also showed that the populations of Tentulia and Kirtankhola rivers were more closely related comparing with Payra river population for isometric condition. These findings may provide useful information for the conservation and sustainable management of this important fish.
    Matched MeSH terms: Fishes
  14. Kawasan tadahan utara Putrajaya, Malaysia-cabaran pengurusan kualiti air Putrajaya, Malaysia
    Mohd Zamri B. Daud, Pereira JJ, Mazlin B. Mokhtar
    Sains Malaysiana, 2011;40:1179-1186.
    Kawasan Pentadbiran Putrajaya merangkumi 70% daripada kawasan tadahan Tasik Putrajaya. Kerja-kerja pembangunan yang dijalankan di dalam kawasan Putrajaya kebiasaannya dapat dikawal dengan merujuk kepada peraturan-peraturan dan garis panduan yang telah disediakan oleh pihak Perbadanan Putrajaya dalam memastikan kualiti air Tasik dan Tanah Bencah Putrajaya sentiasa mematuhi piawaian yang telah ditetapkan. Seluas 30% daripada kawasan tadahan Tasik dan Tanah Bencah Putrajaya terletak di luar pentadbiran dan kawalan pihak berkuasa Putrajaya. Kawasan tadahan Utara Putrajaya adalah kawasan tadahan yang luas yang menyumbang sebahagian besar air yang memasuki kawasan Tasik dan Tanah Bencah Putrajaya. Berasal dari anak Sg. Chuau kini ia telah membentuk satu kawasan tasik dan tanah bencah tersebut. Data kualiti air yang dilakukan oleh pihak berkuasa Putrajaya iaitu Perbadanan Putrajaya dari tahun 2002 sehingga 2005 dianalisis bagi mengenalpasti masalah utama kualiti air dari kawasan Tadahan Utara Tanah Bencah Putrajaya. Data kualiti air yang dicatat sepanjang tahun 2002 mendapati purata peratusan parameter yang melebihi standard Putrajaya bagi ammoniakal nitrogen (NH3-N) ialah 43.7%, E. coli 31.3%, TSS 12.5% manakala DO dan COD masing-masing 6.2%. Untuk sepanjang tahun 2003, purata peratusan parameter bagi NH3-N ialah 23.7%, E. coli 18.4%, jumlah koliform 18.4%, TSS 2.6%, DO 13.2%, COD 13.2%, dan BOD 10.5%. Untuk sepanjang tahun 2004, purata peratusan parameter bagi NH3-N ialah 35.5%, E. coli 22.6%, jumlah koliform 12.9%, TSS 9.7%, COD 3.2%, dan BOD 16.1%. Untuk tahun 2005, purata peratusan parameter bagi E. coli 36.4%, NH3-N ialah 22.7%, jumlah koliform 18.2%, BOD 13.6%, DO 4.5%, dan COD juga 4.5%. Secara keseluruhan, analisis bagi tempoh empat tahun ini mendapati parameter NH3-N dan E. coli sering kali menunjuk bacaan yang tidak mematuhi Piawaian Putrajaya. Punca utama masalah kualiti air di kawasan Tadahan Utara Tanah Bencah Putrajaya adalah kegagalan mengurus kawasan tadahan secara bersepadu dan sikap pihak berkepentingan di kawasan kajian tidak mengurus dan mengawal secara menyeluruh masalah air larian, kawasan terbuka dan kelodakan ketika membangunkan kawasan.
    Matched MeSH terms: Fishes
  15. Fulltext Population Genomics of an Anadromous Hilsa Shad Tenualosa ilisha Species across Its Diverse Migratory Habitats: Discrimination by Fine-Scale Local Adaptation
    Asaduzzaman M, Igarashi Y, Wahab MA, Nahiduzzaman M, Rahman MJ, Phillips MJ, et al.
    Genes (Basel), 2019 12 30;11(1).
    PMID: 31905942 DOI: 10.3390/genes11010046
    The migration of anadromous fish in heterogenic environments unceasingly imposes a selective pressure that results in genetic variation for local adaptation. However, discrimination of anadromous fish populations by fine-scale local adaptation is challenging because of their high rate of gene flow, highly connected divergent population, and large population size. Recent advances in next-generation sequencing (NGS) have expanded the prospects of defining the weakly structured population of anadromous fish. Therefore, we used NGS-based restriction site-associated DNA (NextRAD) techniques on 300 individuals of an anadromous Hilsa shad (Tenualosa ilisha) species, collected from nine strategic habitats, across their diverse migratory habitats, which include sea, estuary, and different freshwater rivers. The NextRAD technique successfully identified 15,453 single nucleotide polymorphism (SNP) loci. Outlier tests using the FST OutFLANK and pcadapt approaches identified 74 and 449 SNPs (49 SNPs being common), respectively, as putative adaptive loci under a divergent selection process. Our results, based on the different cluster analyses of these putatively adaptive loci, suggested that local adaptation has divided the Hilsa shad population into two genetically structured clusters, in which marine and estuarine collection sites were dominated by individuals of one genetic cluster and different riverine collection sites were dominated by individuals of another genetic cluster. The phylogenetic analysis revealed that all the riverine populations of Hilsa shad were further subdivided into the north-western riverine (turbid freshwater) and the north-eastern riverine (clear freshwater) ecotypes. Among all of the putatively adaptive loci, only 36 loci were observed to be in the coding region, and the encoded genes might be associated with important biological functions related to the local adaptation of Hilsa shad. In summary, our study provides both neutral and adaptive contexts for the observed genetic divergence of Hilsa shad and, consequently, resolves the previous inconclusive findings on their population genetic structure across their diverse migratory habitats. Moreover, the study has clearly demonstrated that NextRAD sequencing is an innovative approach to explore how dispersal and local adaptation can shape genetic divergence of non-model anadromous fish that intersect diverse migratory habitats during their life-history stages.
    Matched MeSH terms: Fishes/classification; Fishes/genetics*; Fishes/physiology
  16. Fulltext Preparation and properties of fish cracker from different freshwater fish species
    Zzaman, W., Yusoff, M.M., Yang, T.A.
    International Food Research Journal, 2017;24(5):1858-1862.
    MyJurnal
    Fish crackers made from freshwater fishes is a new dimension in fish cracker industry. In this study, three species were chosen based on their general preference and acceptability by Malaysian. Together with other ingredients, these crackers were prepared using standard formulation and tested in laboratory for their proximate analysis and physical characteristic analysis includes linear expansion, oil absorption, color measurement and texture. Sensory analysis for overall acceptability was carried out among trained panelist in the school. The results for proximate composition and physical analysis showed that there were significant differences (p
    Matched MeSH terms: Fishes
  17. Redescription of Lernaeenicus longiventris Wilson, 1917 (Copepoda: Pennellidae) Parasitic on the Pacific Crevalle Jack Caranx caninus (Carangidae) Through Morphological and Molecular Analyses
    Osuna-Cabanillas JM, Morales-Serna FN, Venmathi Maran BA, Cruz-Barraza JA
    Acta Parasitol, 2023 Mar;68(1):84-90.
    PMID: 36380161 DOI: 10.1007/s11686-022-00627-0
    PURPOSE: The present study deals with a redescription of the copepod Lernaeenicus longiventris Wilson, 1917 (Copepoda: Siphonostomatoida: Pennellidae) found on the Pacific crevalle jack Caranx caninus Günther, using morphological and molecular analyses.

    METHODS: Fish were collected off Mazatlán Port (23° 12' N, 106° 26' W), in the State of Sinaloa, Mexico (southeastern Gulf of California). The copepods were morphologically analyzed by light microscopy. Sequences of the COI mtDNA gene were generated for the first time for this species. These sequences were compared to COI sequences from six species of Lernaeenicus available in GenBank.

    RESULTS: The specimens of the present study exhibited a cephalosome without apparent lateral processes, which were originally described for L. longiventris. No remarkable differences were observed with previous descriptions regarding appendages and body proportions. The phylogenetic tree based on COI sequences showed that L. longiventris was closer to L. radiatus although with low bootstrap values support in ML tree, both species formed a sister clade of L. sprattae.

    CONCLUSIONS: Lernaeenicus longiventris is the unique species of the genus in the Mexican Pacific and the Gulf of California, and also the unique species of Lernaeenicus infecting C. caninus. Molecular data of L. longiventris from host and locality type are required to avoid misidentification of this species.

    Matched MeSH terms: Fishes
  18. PTEROBDELLA OCCIDENTALIS N. SP. (HIRUDINIDA: PISCICOLIDAE) FOR P. ABDITOVESICULATA (MOORE, 1952) FROM THE LONGJAW MUDSUCKER, GILLICHTHYS MIRABILIS, AND STAGHORN SCULPIN, LEPTOCOTTUS ARMATUS, AND OTHER FISHES IN THE EASTERN PACIFIC
    Goffredi SK, Appy RG, Burreson EM, Sakihara TS
    J Parasitol, 2023 Mar 01;109(2):135-144.
    PMID: 37103004 DOI: 10.1645/22-76
    Pterobdella occidentalis n. sp. (Hirudinida: Piscicolidae) is described from the longjaw mudsucker, Gillichthys mirabilis Cooper, 1864, and the staghorn sculpin, Leptocottus armatus Girard, 1854, in the eastern Pacific, and the diagnosis of Pterobdella abditovesiculata (Moore, 1952) from the 'o'opu 'akupa, Eleotris sandwicensis Vaillant and Sauvage, 1875, from Hawaii is amended. The morphology of both species conforms with the genus Pterobdella in possessing a spacious coelom, well-developed nephridial system, and 2 pairs of mycetomes. Originally described as Aestabdella abditovesiculata, P. occidentalis (present along the U.S. Pacific Coast), can be distinguished from most congeners by its metameric pigmentation pattern and diffuse pigmentation on the caudal sucker. Based on mitochondrial gene sequences, including cytochrome c oxidase subunit I (COI) and NADH dehydrogenase subunit I (ND1), P. occidentalis forms a distinct polyphyletic clade with Pterobdella leiostomi from the western Atlantic. Based on COI, ND1, and the 18S rRNA genes, other leech species most closely related to P. occidentalis include Pterobdella arugamensis from Iran, Malaysia, and possibly Borneo, which likely represent distinct species, and Pterobdella abditovesiculata from Hawaii, one of only a few endemic fish parasites in Hawaii. Like P. abditovesiculata, P. arugamensis, and Petrobdella amara, P. occidentalis is often found in estuarine environments, frequently infecting hosts adapted to a wide range of salinity, temperature, and oxygen. The physiological plasticity of P. occidentalis and the longjaw mudsucker host, and the ease of raising P. occidentalis in the lab, make it an excellent candidate for the study of leech physiology, behavior, and possible bacterial symbionts.
    Matched MeSH terms: Fishes
  19. Simulated seasonal oceanographic changes and their implication for the small pelagic fisheries in the Java Sea, Indonesia
    Apriansyah, Atmadipoera AS, Nugroho D, Jaya I, Akhir MF
    Mar Environ Res, 2023 Jun;188:106012.
    PMID: 37159981 DOI: 10.1016/j.marenvres.2023.106012
    Small pelagic fisheries in the Java Sea (JS) contributes to about 26.6% of the total marine fisheries resources, where their spatial-temporal variation is controlled by seasonal oceanographic changes. This study aims to investigate a relationship between seasonal reversal circulation and number of light-fishing vessels (VBD) dispersion that capture small pelagic fishes, using multi-datasets from a regional ocean circulation model, satellite-derived datasets, and pelagic fish landing datasets between 2010 and 2020. The model demonstrates that main axis of eastward (westward) monsoon current that brings warmer and fresher (cooler and saltier) water, confines much closer along the northern Java (southern Kalimantan) during the northwest (southeast) monsoon period. These changes are followed unprecedentedly by southward (northward) shift of VBD and high abundance of euryhaline (stenohaline) fish species. This new evidence implies that reversal monsoon current and surface component of Makassar Throughflow play a significant role on delineating potential small pelagic fishing ground and fish productions.
    Matched MeSH terms: Fishes
  20. Effects of bivalve aquaculture on plankton and benthic community
    Tan K, Xu P, Huang L, Luo C, Huang J, Fazhan H, et al.
    Sci Total Environ, 2024 Mar 01;914:169892.
    PMID: 38211869 DOI: 10.1016/j.scitotenv.2024.169892
    Global human population has increased dramatically over the past 50 years. As a result, marine fisheries and finfish aquaculture have become increasingly unsustainable, driving bivalve aquaculture to become an important food industry for the production of marine animal protein to support the growing market demand for animal protein. It is projected that the rate of bivalve aquaculture expansion will be greatly accelerated in the near future as the human population continues to increase. Although it is generally believed that unfed bivalve aquaculture has less impact on the environment than finfish aquaculture, the rapid expansion of bivalve aquaculture has raised concerns about its potential negative impact, especially on plankton and benthic community. Therefore, there is an urgent need to update the potential effects of bivalve aquaculture on plankton and benthic community. This article reviews the present state of knowledge on environmental issues related to bivalve aquaculture, and discusses potential mitigation measures for the environmental impacts induced by expansion of bivalve aquaculture. This review provides guidance for scientists and farm managers to clarify the current state of research and identify priority research needs for future bivalve aquaculture research. Therefore, specific management strategies can be formulated for the sustainable development and expansion of bivalve aquaculture.
    Matched MeSH terms: Fishes
Related Terms
Filters
Contact Us

Please provide feedback to Administrator ([email protected])

External Links