المؤلفون: Araya-Schmidt, Tomas¹ Tomas.Schmidt@mi.mun.ca, Bayse, Shannon M.¹, Winger, Paul D.¹, Frank, Colin H.¹

المصدر: Aquaculture & Fisheries (2096-1758). Nov2023, Vol. 8 Issue 6, p661-671. 11p.

مصطلحات موضوعية: *PANDALUS borealis, *BIGHT redfish, *TRAWLING, *FISHERIES

مصطلحات جغرافية: CANADA

مستخلص: The offshore Northern shrimp (Pandalus borealis) bottom trawl fishery in eastern Canada currently uses 22 and 28 mm bar spacing Nordmøre grids to limit bycatch from using small mesh codends. However, a recent rebound of juvenile redfish (Sebastes spp.), that can pass through the grids, has greatly increased bycatch. To address this concern, this study investigated the effectiveness of 17 and 15 mm bar spacing Nordmøre grids in a twin-trawl (paired) configuration against the traditional 22 mm bar spacing grid. Size selectivity analyses showed that the 17 and 15 mm grids resulted in no significant reduction in shrimp catch across all length classes. The 17 mm grid significantly reduced redfish bycatch for all length classes and the 15 mm grid significantly reduced redfish bycatch for individuals larger than 95 mm total length. Less redfish entered the codend with the experimental grids, however, the overlap in width between redfish and Northern shrimp limits the overall sorting efficiency of the grids, leaving some redfish still vulnerable to capture. [ABSTRACT FROM AUTHOR]

المؤلفون: Akinjogunla, V. F.¹, Ejikeme, C. E.², Udoinyang, E. P.³, Mustapha, A. A.⁴ aamustapha.ssc@buk.edu.ng

المصدر: Agricultural Science & Technology (1313-8820). Sep2023, Vol. 15 Issue 3, p46-56. 11p.

مصطلحات موضوعية: *PANDALUS borealis, *TRACE metals, *MORPHOMETRICS, *ANTHROPOGENIC effects on nature

مستخلص: Bio-inorganic chemistry is found as an endearing aspect to research in today's epoch. It deals with chemical reactions between the metals with natural resources, such as air, soil, water and byproducts (foods). To assess the decline in the quality of southern pink shrimps and water quality on samples from the Lagos lagoon, the morphometric assessment of the crustacean (Farfantepenaeus notialis -- F. notialis), physicochemical parameters (pH, temperature, salinity, conductivity, total hardness, total dissolved solids, total suspended solids, biological oxygen demand, chemical oxygen demand, dissolved oxygen, sulphates, nitrate and phosphate) and levels of six (6) trace metals (cadmium, chromium, zinc, iron, manganese and copper) were collected from three sampling points with renowned anthropogenic activities along the stretch of the Lagos Lagoon using standard analytical procedures and the results were compared with standard acceptable limits. The crustaceans used had total length (4.0 - 14.4 cm), carapace length (1.6 -- 6.4 cm), total weight (1.1 -- 20.8 g) and carapace weight (0.9 - 11.5 g). The results obtained in the physicochemical analysis revealed that a few parameters such as biochemical oxygen demand and total suspended solids were beyond acceptable limits, while the trace metals were present in the samples at different levels but still within the maximum residual levels in the edible tissues of the pink shrimps. The obtained results showed that the crustacean and water from the lagoon contained metals but did not exceed both local and international standards of limit and thus, they are still safe for consumption and domestic uses. [ABSTRACT FROM AUTHOR]

المؤلفون: Akhile Collins Onodenalore, Abul Hossain, Joseph Banoub, Fereidoon Shahidi

المصدر: Food Production, Processing and Nutrition, Vol 6, Iss 1, Pp 1-10 (2024)

مصطلحات موضوعية: Pandalus borealis, Processing discards, Antioxidants, HPLC, Mass spectrometry, Nutrition. Foods and food supply, TX341-641, Food processing and manufacture, TP368-456

الوصف: Abstract Shrimps are the most consumed species among crustaceans and are well appreciated for their flavor and high nutritional value. This work investigated the antioxidative compounds of Northern shrimp (Pandalus borealis) and its processing discards (shells and heads) using various solvents and chromatographic techniques as well as mass spectrometry. Ethanol served as the best extraction medium, and the extracts obtained demonstrated strong antioxidant activity in a β-carotene-linoleate emulsion system. The antioxidative compounds of the extract were isolated using a silica gel column chromatography, followed by thin layer chromatography. This led to the identification of two highly polar and two low polarity compounds. These compounds, for the first time, were isolated and purified by using reversed-phase HPLC. Their structures were tentatively elucidated using electrospray mass spectrometry. These unique compounds were heterocyclic phenolic compounds and identified as 7-(3-butenyl)-2-hydroxy-6-(1,2,5,6-tetrahydropyridin-2-yl) quinoline and 7-(3-butenyl)-2-hydroxy-6-(1,2,5,6-tertahydropyridin-2-yl)-7,8-dihydroquinoline and their isomers. The proposed novel compounds in shrimp provide a reason for their oxidative stability and potential benefits, as well as possibly serving as substrates for the discoloration of shrimp. Graphical Abstract

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2661-8974Test

الوصول الحر: https://doaj.org/article/0e398f52d70f4ebcb5315906113dd87cTest

المؤلفون: Ella Guscelli, Denis Chabot, Fanny Vermandele, Diana Madeira, Piero Calosi

المصدر: Frontiers in Marine Science, Vol 10 (2023)

مصطلحات موضوعية: Metabolomics (OMICS), macrophysiology, conservation physiology, crustaceans, Pandalus borealis, pathways, Science, General. Including nature conservation, geographical distribution, QH1-199.5

الوصف: Impacts of global ocean changes on species have historically been investigated at the whole-organism level. However, acquiring an in-depth understanding of the organisms’ cellular metabolic responses is paramount to better define their sensitivity to environmental challenges. This is particularly relevant for species that experience highly different environmental conditions across their distribution range as local acclimatization or adaptation can influence their responses to rapid global ocean changes. We aimed at shedding light on the cellular mechanisms underpinning the sensitivity to combined ocean warming (OW) and acidification (OA) in the northern shrimp Pandalus borealis, from four different geographic origins defined by distinctive environmental regimes in the northwest Atlantic: i.e. St. Lawrence Estuary (SLE), Eastern Scotian Shelf (ESS), Esquiman Channel (EC) and Northeast Newfoundland Coast (NNC). We characterized targeted metabolomics profiles of the muscle of shrimp exposed to three temperatures (2, 6 or 10°C) and two pH levels (7.75 or 7.40). Overall, shrimp metabolomics profiles were modulated by a significant interaction between temperature, pH and origin. Temperature drove most of the metabolomics reprogramming, confirming that P. borealis is more sensitive to OW than OA. Inter-origin differences in metabolomics profiles were also observed, with temperature*pH interactions impacting only shrimp from SLE and ESS, pH affecting only shrimp from SLE and temperature impacting shrimp from all origins. Temperature influenced metabolomics pathways related to the tricarboxylic acid cycle (TCA) and amino acid metabolism, resulting mainly in an accumulation of TCA intermediates and tyrosine. Temperature*pH and pH in isolation only affected amino acid metabolism, leading to amino acids accumulation under low pH. However, the ratio of ATP : ADP remained constant across conditions in shrimp from all origins suggesting that their energetic status is not affected by OW and OA. Still, the accumulation of TCA intermediates and tyrosine suggests the possible enhancement of immune responses under future OW and OA conditions. Our findings suggest that shrimp from SLE are more sensitive at the molecular level, compared to others, to future complex environmental conditions. This underlines the importance of investigating intraspecific variation in mechanisms of responses to combined drivers when trying to define species’ sensitivity to global ocean changes.

وصف الملف: electronic resource

العلاقة: https://www.frontiersin.org/articles/10.3389/fmars.2023.1170451/fullTest; https://doaj.org/toc/2296-7745Test

الوصول الحر: https://doaj.org/article/53ca87877e9048099da277307ba9cc63Test

المؤلفون: Turck, Turck, Bresson, Jean-Louis, Burlingame, Barbara, Dean, Tara, Fairweather-Tait, Susan, Heinonen, Marina, Hirsch-Ernst, Karen-Ildico, Mangelsdorf, Inge, Mcardle, Harry J., Naska, Androniki, Neuhauser-Berthold, Monika, Nowicka, Grazyna, Pentieva, Kristina, Sanz, Yolanda, Siani, Alfonso, Sjodin, Anders, Stern, Martin, Tome, Daniel, Vinceti, Marco, Willatts, Peter, Engel, Karl-Heinz, Marchelli, Rosangela, Poting, Annette, Poulsen, Morten, Schlatter, Josef Rudolf, Matijevic, Leonard, Van Loveren, Henk

المساهمون: CHU Lille, Inserm, Université de Lille, Lille Inflammation Research International Center (LIRIC) - U995, Lille Inflammation Research International Center - U 995 LIRIC

مصطلحات موضوعية: Safety, shrimps (Pandalus borealis), bioactive peptides, ACE-inhibitors, novel food

الوصف: Following a request from the European Commission, the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) was asked to deliver an opinion on shrimp peptide concentrate as a novel food (NF) pursuant to Regulation (EU) 2015/2283. The NF is a peptide mixture obtained by an enzymatic proteolysis from northern shrimp (Pandalus borealis) shells and heads. The information provided on the composition, specifications, batch-to-batch variability, stability and production process of the NF is sufficient and does not raise safety concerns. The intention of the applicant is to use this NF as an ingredient in food supplements and to market it to adult consumers at a maximum proposed level of intake of 1,200 mg/day (corresponding to 17 mg/kg body weight (bw) per day for a 70 kg person). There are no concerns with regard to genotoxicity. The available human data do not raise safety concerns. Considering the no observed adverse effect level (NOAEL) of 2,000 mg/kg bw per day from a 90-day repeated-dose oral toxicity study, the maximum proposed level of intake and the nature of the NF, the Panel concludes that the margin of exposure (of 117) is sufficient. The Panel concludes that the NF, shrimp peptide concentrate, is safe to be used as a food supplement at the proposed maximum dose of 1,200 mg/day. The target population is adults. The Panel considered that the conclusion on the safety of the NF could not have been reached without the data from the unpublished study report on repeated-dose 90-day oral toxicity and from the unpublished study reports on two human studies. ; 16

وصف الملف: application/octet-stream; application/rdf+xml; charset=utf-8; application/pdf

العلاقة: EFSA Journal; EFSA J.; http://hdl.handle.net/20.500.12210/13808Test

الإتاحة: https://doi.org/20.500.12210/13808Test
https://hdl.handle.net/20.500.12210/13808Test

المؤلفون: Lee, Richard F.¹ dick.lee@skio.uga.edu, Walker, Anna N.¹, Landers, Stephen C.¹, Walters, Tina L.¹, Powell, Shirley A.¹, Frischer, Marc.E.¹

المصدر: Journal of Invertebrate Pathology. Feb2019, Vol. 161, p40-46. 7p.

مصطلحات موضوعية: *GRAPE anthracnose, *PANDALUS borealis, *PATHOLOGY, *ELECTRON microscopy, *RIBOSOMAL RNA

مستخلص: Graphical abstract Highlights • Black spot gill syndrome in Pandalus borealis is caused by the apostome ciliate Synophrya sp. • The ciliate infects the gill tissues and undergoes metamorphosis into histotrophic life stages. • Parasitization by Synophrya sp. leads to the formation of melanized nodules and the distinct gross pathology. • Synophrya sp. epizootics could contribute to decline of P. borealis in North Atlantic commercial fisheries. Abstract Black spot gill syndrome in the northern shrimp, Pandalus borealis , is caused by an apostome ciliate, Synophrya sp., found within the gill lamellae. Whole mount staining, thin section histology, electron microscopy, and molecular studies were carried out on infected gills. The Synophrya 18S rRNA from Pandalus borealis (Genbank accession no. KX906568) and from two portunid crab species, Achelous spinimanus (Genbank accession no. MH395150) and Achelous gibbesii (Genbank accession no. MH395151) was sequenced. Phylogenetic analyses confirmed the identity of these ciliates as apostomes. The 18S rRNA sequence recovered from P. borealis shared 95% nucleotide similarity with the sequences recovered from the portunid crab species suggesting that it is a different species of Synophrya. The invasive hypertrophont stages, with a distinctive macronuclear reticulum, ranged in size from 300 to 400 µm with as many as 5 large forms/mm2 of gill tissue. Histotrophic hypertrophont stages and hypertomont stages were observed in these studies. The presence of the parasite was linked to the formation of melanized nodules (up to 9 nodules/mm2 of gill tissue) by the host and in some cases to extensive necrosis. Other studies have reported Synophrya sp. infections in P. borealis from Greenland, Labrador and Newfoundland, but further studies are necessary to determine the prevalence of this parasite in the dense schools of northern shrimp in the North Atlantic. Questions remain as to the possibility of epizootics of this pathogen and its impact on northern shrimp populations. [ABSTRACT FROM AUTHOR]

المؤلفون: Larsen, Roger B.¹ roger.larsen@uit.no, Herrmann, Bent^1,2, Sistiaga, Manu^1,2, Brinkhof, Jesse^1,2, Grimaldo, Eduardo²

المصدر: Fisheries Research. Dec2018, Vol. 208, p267-273. 7p.

مصطلحات موضوعية: *PANDALUS borealis, *SHRIMP populations, *SHRIMPS, *AMERICAN plaice, *BYCATCHES, *MARKETING

مستخلص: Abstract Trawlers targeting Deep-water Shrimp (Pandalus borealis) in the North Atlantic use a Nordmøre sorting grid ahead of a small-meshed codend. Based on experimental fishing, the effect of adding a 9 mm spaced release grid behind the mandatory 19 mm spaced Nordmøre sorting grid, was determined. The performance in terms of size selection of the release grid and the two grids combined were assessed for target Deep-water Shrimp and for juvenile Redfish (Sebastes spp.) and American Plaice (Hippoglossoides platessoides), two of the most common bycatch species in the fishery. The aim of using the release grid was to improve the escape of undersized shrimp and the bycatch of juvenile fish from the gear. The results demonstrated that the release grid improved the escape of the smallest Deep-water Shrimp significantly. The fraction of small shrimp released through this grid was estimated to be 45%. However, the results also revealed the need for further improvements in the design of the release grid to increase the reduction of small shrimp and juvenile fish bycatch. For Redfish and American Plaice the fractions of juveniles escaping through the release grid were estimated to be 16% and 32%, respectively. In addition, the release grid only led to the escape of the smallest juvenile individuals, in particular for Redfish. [ABSTRACT FROM AUTHOR]

المؤلفون: Zink, Ian C.^1,2 ian.zink@noaa.gov, Browder, Joan A.², Lirman, Diego³, Serafy, Joseph E.^2,3

المصدر: PLoS ONE. 11/9/2018, Vol. 13 Issue 11, p1-26. 26p.

مصطلحات موضوعية: *PANDALUS borealis, *CLASSIFICATION of fish, *COASTAL wetlands, *HABITATS, *PHYSICAL & theoretical chemistry

مستخلص: The Biscayne Bay Coastal Wetlands (BBCW) project of the Comprehensive Everglades Restoration Plan (CERP) aims to reduce point-source freshwater discharges and spread freshwater flow along the mainland shoreline of southern Biscayne Bay. These actions will be taken to approximate conditions in the coastal wetlands and bay that existed prior to construction of canals and water control structures. An increase in pink shrimp (Farfantepenaeus duorarum) density to ≥ 2 individuals m-2 during the wet season (i.e., August-October) along the mainland shoreline was previously proposed as an indication of BBCW success. This study examined pre-BBCW baseline densities and compared them with the proposed target. Densities were monitored by seasonal (wet, dry) throw-trapping (1 m2 replicated in triplicate) at 47 sites along ~22 km of the southwestern Biscayne Bay coastline over 10 years (2007–2016). Densities varied across years and were most often higher in dry seasons. Quantile regression revealed density limitation by four habitat attributes: water temperature (°C), depth (m), salinity (ppt), and submerged aquatic vegetation (SAV: % cover). Procrustean analyses that tested for concordance between the spatial and temporal distributions of shrimp densities and habitat metrics found that water temperature, water depth, and salinity explained ~ 28%, 28%, and 22% of density variability, respectively. No significant relationship with SAV was observed. Hierarchical clustering was used to identify spatially and temporally similar groupings of pink shrimp densities by sites or season-years. Significant groupings were then investigated with respect to potentially limiting habitat attributes. Six site and four year-season clusters were identified. Although habitat attributes significantly differed among spatial clusters, within-cluster median pink shrimp densities did not correlate with within-cluster minima, maxima, medians, or standard deviations of habitat attributes. Overall, pink shrimp density ( = 0.86, SD = 1.32 shrimp m-2) was significantly lower (t(α = 0.10,2),939 = -26.53, P <0.0001) than the 2 shrimp m-2 CERP Interim Goal target. Pink shrimp density corresponded significantly with salinity and appeared limited to density < 2 shrimp m-2 by salinity < ~18 ppt. Salinity is an environmental attribute that will be directly influenced by CERP implementation. [ABSTRACT FROM AUTHOR]

المؤلفون: Lomeli, Mark J M¹ mlomeli@psmfc.org, Groth, Scott D², Blume, Matthew T O³, Herrmann, Bent⁴, Wakefield, W Waldo⁵, Anderson, Handling editor: Emory

المصدر: ICES Journal of Marine Science / Journal du Conseil. Nov/Dec2018, Vol. 75 Issue 6, p2224-2234. 11p.

مصطلحات موضوعية: *PANDALUS borealis, *GROUNDFISH fisheries, *BYCATCHES, *FISH populations, *ENDANGERED species

مستخلص: We examined how catches of ocean shrimp (Pandalus jordani), eulachon (Thaleichthys pacificus), and juvenile groundfish could be affected by altering the level of artificial illumination along the fishing line of an ocean shrimp trawl. In the ocean shrimp trawl fishery, catches of eulachon are of special concern, as the species' southern Distinct Population Segment is listed as "threatened" under the US Endangered Species Act. Using a double-rigged trawl vessel, with one trawl illuminated and the other unilluminated, we compared the catch efficiencies for ocean shrimp, eulachon, and juvenile groundfish between an unilluminated trawl and trawls illuminated with 5, 10, and 20 LED fishing lights along their fishing line. The addition of artificial illumination along the trawl fishing line significantly affected the average catch efficiency for eulachon, rockfish (Sebastes spp.), and flatfish, with the three LED configurations each catching significantly fewer individuals than the unilluminated trawl without impacting ocean shrimp catches. For Pacific hake (Merluccius productus), the ten LED-configured trawl caught significantly more fish than the unilluminated trawl. For the five and 20 LED configurations, mean Pacific hake catches did not differ from the unilluminated trawl. This study contributes new data on how artificial illumination can affect eulachon catches (and other fish) and contribute to their conservation. [ABSTRACT FROM AUTHOR]

المؤلفون: Alves-Júnior, F. A.¹ bioflavio@hotmail.com, Neumann-Leitão, S.¹, Araújo, M. S. L. C.², Souza-Filho, J. F.¹

المصدر: Crustaceana. 2018, Vol. 91 Issue 11, p1381-1387. 7p.

مصطلحات موضوعية: *PANDALUS borealis, *SPECIES diversity, *BIODIVERSITY, *SHRIMPS

مصطلحات جغرافية: BRAZIL

الملخص (بالإنجليزية): In this paper, we report some morphological abnormalities for the deep-sea shrimp Glyphocrangon aculeata A. Milne-Edwards, 1881, collected from the western South Atlantic. All specimens analysed herein were collected in Potiguar Basin, located in northeastern Brazil, through bottom trawls along the continental slope between 150 and 2068 m depth in 2009 and 2011. Out of 59 specimens, one ovigerous female, collected at 1074 m depth, was registered with abnormalities in some regions of the carapace, abdomen and telson. Factors such as genetic mutations, nutritional alterations, or deformities during ecdysis are suggested as being the most probable cause of the deformities reported here. [ABSTRACT FROM AUTHOR]

Abstract (Portuguese): Neste trabalho, nós reportamos algumas anomalias morfológicas para o camarão de profundidade Glyphocrangon aculeata A. Milne-Edwards, 1881, coletados no Atlântico Sul ocidental. Todos os espécimes analisados aqui foram coletados na Bacia Potiguar, localizado no Nordeste do Brasil, através de arrasto de fundo ao longo do talude continental entre 150 e 2068 m de profundidade no ano de 2009 e 2011. Dos 59 espécimes, apenas uma fêmea ovígera, coletada em 1074 m de profundidade, foi registrada com anomalias em algumas regiões da carapaça, abdome e telson. Fatores como mutações genéticas, alterações nutricionais, ou deformidades durante a ecdise são sugeridas como sendo as mais prováveis causas das deformidades reportadas aqui. [ABSTRACT FROM AUTHOR]