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https://www.readbyqxmd.com/read/29161643/effect-of-vacuum-and-modified-atmosphere-packaging-on-the-microbiological-chemical-and-sensory-properties-of-tropical-red-drum-sciaenops-ocellatus-fillets-stored-at-4%C3%A2-c
#1
Adèle Silbande, Sandra Adenet, Christine Chopin, Josiane Cornet, Juliette Smith-Ravin, Katia Rochefort, Françoise Leroi
AIMS: The effect of vacuum (VP - 4°C) and CO2/N2-atmosphere (MAP - 4°C) packaging on the quality of red drum fillets compared with whole gutted iced fish was investigated. METHODS AND RESULTS: A metagenomic approach, bacterial enumeration and isolation, biochemical and sensory analyses were carried out. The organoleptic rejection of whole fish was observed at day 15 whereas VP and MAP fillets appeared unacceptable only after 29days. At these dates, total mesophilic counts reached 10(7)-10(8)CFU g(-1)...
October 26, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29158140/consequences-of-an-uncertain-mass-mortality-regime-triggered-by-climate-variability-on-giant-clam-population-management-in-the-pacific-ocean
#2
Simon Van Wynsberge, Serge Andréfouët, Nabila Gaertner-Mazouni, Georges Remoissenet
Despite actions to manage sustainably tropical Pacific Ocean reef fisheries, managers have faced failures and frustrations because of unpredicted mass mortality events triggered by climate variability. The consequences of these events on the long-term population dynamics of living resources need to be better understood for better management decisions. Here, we use a giant clam (Tridacna maxima) spatially explicit population model to compare the efficiency of several management strategies under various scenarios of natural mortality, including mass mortality due to climatic anomalies...
November 17, 2017: Theoretical Population Biology
https://www.readbyqxmd.com/read/29155453/large-scale-bleaching-of-corals-on-the-great-barrier-reef
#3
T P Hughes, J T Kerry, T Simpson
In 2015-2016, record temperatures triggered a pan-tropical episode of coral bleaching. In the southern hemisphere summer of March-April 2016, we used aerial surveys to measure the level of bleaching on 1,156 individual reefs throughout the 2,300 km length of the Great Barrier Reef, the world's largest coral reef system. The accuracy of the aerial scores was ground-truthed with detailed underwater surveys of bleaching at 260 sites (104 reefs), allowing us to compare aerial and underwater bleaching data with satellite-derived temperatures and with associated model predictions of bleaching...
November 20, 2017: Ecology
https://www.readbyqxmd.com/read/29151854/strong-population-structure-deduced-from-genetics-otolith-chemistry-and-parasite-abundances-explains-vulnerability-to-localized-fishery-collapse-in-a-large-sciaenid-fish-protonibea%C3%A2-diacanthus
#4
Laura Taillebois, Diane P Barton, David A Crook, Thor Saunders, Jonathan Taylor, Mark Hearnden, Richard J Saunders, Stephen J Newman, Michael J Travers, David J Welch, Alan Greig, Christine Dudgeon, Safia Maher, Jennifer R Ovenden
As pressure on coastal marine resources is increasing globally, the need to quantitatively assess vulnerable fish stocks is crucial in order to avoid the ecological consequences of stock depletions. Species of Sciaenidae (croakers, drums) are important components of tropical and temperate fisheries and are especially vulnerable to exploitation. The black-spotted croaker, Protonibea diacanthus, is the only large sciaenid in coastal waters of northern Australia where it is targeted by commercial, recreational and indigenous fishers due to its food value and predictable aggregating behaviour...
December 2017: Evolutionary Applications
https://www.readbyqxmd.com/read/29135913/management-of-ciguatoxin-risk-in-eastern-australia
#5
Hazel Farrell, Shauna A Murray, Anthony Zammit, Alan W Edwards
Between 2014 and 2016, five cases of ciguatera fish poisoning (CFP), involving twenty four individuals, were linked to Spanish Mackerel (Scomberomorus commerson) caught in the coastal waters of the state of New South Wales (NSW) on the east coast of Australia. Previously, documented cases of CFP in NSW were few, and primarily linked to fish imported from other regions. Since 2015, thirteen individuals were affected across four additional CFP cases in NSW, linked to fish imported from tropical locations. The apparent increase in CFP in NSW from locally sourced catch, combined with the risk of CFP from imported fish, has highlighted several considerations that should be incorporated into risk management strategies to minimize CFP exposure for seafood consumers...
November 14, 2017: Toxins
https://www.readbyqxmd.com/read/29135342/invisible-parasites-and-their-implications-for-coexisting-water-fleas
#6
Tara Elizabeth Stewart, Mark Torchin, Carla Cáceres
The top-down effects of consumers, like predators, are known to affect abundances, size structure, and species composition in aquatic ecosystems. Parasites are also important in shaping the ecology of free-living species, however, their effects are often overlooked because parasites can be difficult to detect. Parasites can be particularly challenging to observe in zooplankton hosts because of their small size and ephemeral infection periods. To overcome these challenges, we used a quarantine approach combined with high magnification microscopy to increase detection of parasites of the tropical Cladoceran, Ceriodaphnia cornuta, in Lake Gatun, Panamá...
November 14, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/29132921/empirical-data-demonstrates-risk-tradeoffs-between-landscapes-for-herbivorous-fish-may-promote-reef-resilience
#7
Caitlin R Fong, Matthew Frias, Nicholas Goody, Sarah Joy Bittick, Rachel J Clausing, Peggy Fong
Herbivores balance resource requirements with predation risk, which can differ among landscapes; hence, landscape can shape these trade-offs, influencing herbivore distribution and behavior. While this paradigm has been well established on coral-dominated reefs, tropical reefs worldwide are shifting to algal dominance. If herbivores avoid algae due to higher risk and forage in coral, these algal states may be stabilized. However, if herbivores forage more in resource-rich algal states, this may promote coral recovery...
November 6, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/29127867/effects-of-ashes-from-a-brazilian-savanna-wildfire-on-water-soil-and-biota-an-ecotoxicological-approach
#8
Eduardo C Oliveira-Filho, Darlan Q Brito, Zelia M B Dias, Mayara S Guarieiro, Esther L Carvalho, Maria L Fascineli, Cintia C Niva, Cesar K Grisolia
Wildfire is very common in Brazilian savannas, and its effects on water, soil and aquatic/soil organisms are poorly understood. In this study, we observed the effects of fire, especially of ashes, on surface soil and subsurface water in a typical Brazilian savanna (Cerrado sensu strictu) for one year. Soil analyses (pH, organic matter content, potential acidity, K, Ca, Mg and P) and subsurface water analyses (NO(3-), PO4(3-) Mg(2+), Ca(2+) and K(+)) were assessed. We evaluated the ecotoxicological effects of ashes on three different endpoints and species, in fish Danio rerio (embryonic development), aquatic snail Biomphalaria glabrata (reproduction) and a soil species Enchytraeus sp...
November 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29126413/leaves-from-banana-musa-nana-and-maize-zea-mays-have-no-phyto-prophylactic-effects-on-the-susceptibility-of-grass-carp-ctenopharyngodon-idella-to-aeromonas-hydrophila-infection
#9
Richard Mayrhofer, Simon Menanteau-Ledouble, Johannes Pucher, Ulfert Focken, Mansour El-Matbouli
BACKGROUND: The ubiquitous and opportunistic bacterial pathogen Aeromonas hydrophila has been associated with ulcerative dermatitis in fish, especially under stressful conditions. It can cause severe losses in fresh water aquaculture and is particularly prevalent in tropical and subtropical regions. Fresh leaves from maize and bananas have been used as feed supplement by fish farmers in Vietnam and it has been reported that they may have phyto-prophylactic benefits. In the present study, a feeding trial was conducted to investigate the benefits of providing maize and banana leaves as feed supplement: to determine if they were taken up and digested by grass carp (Ctenopharyngodon idella), if this uptake resulted in improved growth performance, and if leaf supplementation protected fish when challenged with A...
November 10, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29118640/checklist-of-the-tidal-pool-fishes-of-jeju-island-korea
#10
Hyuck Joon Kwun, Jinsoon Park, Hye Seon Kim, Ju-Hee Kim, Hyo-Seon Park
Seventy-six species of fishes, representing 60 genera and 34 families, were recorded from tidal pools on Jeju Island, southern Korea. The major families in terms of species were the Gobiidae (11 species), Pomacentridae (8 species), Blenniidae (6 species), and Labridae (5 species). Thirty-nine species were classified as tropical, 26 as temperate and 11 as subtropical.
2017: ZooKeys
https://www.readbyqxmd.com/read/29096975/plastic-debris-collars-an-underreported-stressor-in-tropical-reef-fishes
#11
Joséde Anchieta C C Nunes, Cláudio L S Sampaio, Francisco Barros, Antoine O H C Leduc
Plastic debris collar wrappings (PDCW) are involved in the frequent entanglement of several groups of marine animals. In fishes, however aside from 'ghost fishing', PDCW events are rarely documented, and no record of this occurrence exists in tropical reef fishes. Here, we present records for four species afflicted by plastic debris collars. Observations occurred during snorkeling, and included the silver mojarra Eucinostomus argenteus, Atlantic thread herring Ophistonema oglinum, tomtate grunt Haemulon aurolineatum and gray parrotfish Sparisoma axillare...
October 30, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29080323/seascape-genomics-reveals-fine-scale-patterns-of-dispersal-for-a-reef-fish-along-the-ecologically-divergent-coast-of-northwestern-australia
#12
Joseph D DiBattista, Michael J Travers, Glenn I Moore, Richard D Evans, Stephen J Newman, Ming Feng, Samuel D Moyle, Rebecca J Gorton, Thor Saunders, Oliver Berry
Understanding the drivers of dispersal among populations is a central topic in marine ecology and fundamental for spatially explicit management of marine resources. The extensive coast of Northwestern Australia provides an emerging frontier for implementing new genomic tools to comparatively identify patterns of dispersal across diverse and extreme environmental conditions. Here, we focused on the stripey snapper (Lutjanus carponotatus), which is important to recreational, charter-based and customary fishers throughout the Indo-West Pacific...
October 28, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/29065152/a-deep-transcriptomic-resource-for-the-copepod-crustacean-labidocera-madurae-a-potential-indicator-species-for-assessing-near-shore-ecosystem-health
#13
Vittoria Roncalli, Andrew E Christie, Stephanie A Sommer, Matthew C Cieslak, Daniel K Hartline, Petra H Lenz
Coral reef ecosystems of many sub-tropical and tropical marine coastal environments have suffered significant degradation from anthropogenic sources. Research to inform management strategies that mitigate stressors and promote a healthy ecosystem has focused on the ecology and physiology of coral reefs and associated organisms. Few studies focus on the surrounding pelagic communities, which are equally important to ecosystem function. Zooplankton, often dominated by small crustaceans such as copepods, is an important food source for invertebrates and fishes, especially larval fishes...
2017: PloS One
https://www.readbyqxmd.com/read/29057321/abundance-and-local-scale-processes-contribute-to-multi-phyla-gradients-in-global-marine-diversity
#14
Graham J Edgar, Timothy J Alexander, Jonathan S Lefcheck, Amanda E Bates, Stuart J Kininmonth, Russell J Thomson, J Emmett Duffy, Mark J Costello, Rick D Stuart-Smith
Among the most enduring ecological challenges is an integrated theory explaining the latitudinal biodiversity gradient, including discrepancies observed at different spatial scales. Analysis of Reef Life Survey data for 4127 marine species at 2406 coral and rocky sites worldwide confirms that the total ecoregion richness peaks in low latitudes, near +15°N and -15°S. However, although richness at survey sites is maximal near the equator for vertebrates, it peaks at high latitudes for large mobile invertebrates...
October 2017: Science Advances
https://www.readbyqxmd.com/read/29043389/biomagnification-of-mercury-in-fish-from-two-gold-mining-impacted-tropical-marshes-in-northern-colombia
#15
José Luis Marrugo-Negrete, Javier Alonso Ruiz-Guzmán, Ana Carolina Ruiz-Fernández
Total mercury concentrations (T-Hg) and stable isotope ratios (δ(15)N and δ(13)C) were analyzed in the muscle of fish, collected at two marshes impacted by gold mining in Northern Colombia, to evaluate the seasonal and spatial behavior of these variables and mercury biomagnification based on their relationship with δ(15)N ratios in the fish. There was not significant (p > 0.05) seasonal differences (dry and rainy season) in δ(15)N and δ(13)C values in none marsh, suggesting that these fish species keep a similar feed pattern within each marsh along the year...
October 17, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29040262/serological-and-spatial-analysis-of-alphavirus-and-flavivirus-prevalence-and-risk-factors-in-a-rural-community-in-western-kenya
#16
Elysse N Grossi-Soyster, Elizabeth A J Cook, William A de Glanville, Lian F Thomas, Amy R Krystosik, Justin Lee, C Njeri Wamae, Samuel Kariuki, Eric M Fèvre, A Desiree LaBeaud
Alphaviruses, such as chikungunya virus, and flaviviruses, such as dengue virus, are (re)-emerging arboviruses that are endemic in tropical environments. In Africa, arbovirus infections are often undiagnosed and unreported, with febrile illnesses often assumed to be malaria. This cross-sectional study aimed to characterize the seroprevalence of alphaviruses and flaviviruses among children (ages 5-14, n = 250) and adults (ages 15 ≥ 75, n = 250) in western Kenya. Risk factors for seropositivity were explored using Lasso regression...
October 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29034851/nitrosopumilus-maritimus-gen-nov-sp-nov-nitrosopumilus-cobalaminigenes-sp-nov-nitrosopumilus-oxyclinae-sp-nov-and-nitrosopumilus-ureiphilus-sp-nov-four-marine-ammonia-oxidizing-archaea-of-the-phylum-thaumarchaeota
#17
Wei Qin, Katherine R Heal, Rasika Ramdasi, Julia N Kobelt, Willm Martens-Habbena, Anthony D Bertagnolli, Shady A Amin, Christopher B Walker, Hidetoshi Urakawa, Martin Könneke, Allan H Devol, James W Moffett, E Virginia Armbrust, Grant J Jensen, Anitra E Ingalls, David A Stahl
Four mesophilic, neutrophilic, and aerobic marine ammonia-oxidizing archaea, designated strains SCM1(T), HCA1(T), HCE1(T) and PS0(T), were isolated from a tropical marine fish tank, dimly lit deep coastal waters, the lower euphotic zone of coastal waters, and near-surface sediment in the Puget Sound estuary, respectively. Cells are straight or slightly curved small rods, 0.15-0.26 µm in diameter and 0.50-1.59 µm in length. Motility was not observed, although strain PS0(T) possesses genes associated with archaeal flagella and chemotaxis, suggesting it may be motile under some conditions...
October 16, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29026615/an-unusual-cutaneous-infection-caused-by-mycobacterium-marinum
#18
Federica Veronese, Elisa Zavattaro, Pamela Farinelli, Enrico Colombo, Paola Savoia
Introduction.Mycobacterium marinum is a non-tubercular mycobacterium residing in fresh or salt water (in tropical or temperate areas); it is a fish and human pathogen, and in immunocompromised patients can cause severe cutaneous and subcutaneous infections. Case presentation. A 46-year-old white man who underwent immunosuppressive therapy was admitted to our department in May 2016 for skin lesions previously diagnosed as 'unusual erysipelas'. We rejected the hypothesis of erysipelas, due to the clinical features, and our diagnostic hypotheses were oriented towards sporotrichosis, atypical mycobacteriosis, cutaneous tuberculosis and cutaneous sarcoidosis...
April 2017: JMM Case Reports
https://www.readbyqxmd.com/read/29023705/larval-fish-collected-from-sound-scattering-layers-in-an-offshore-tropical-area
#19
M S Castro, A C T Bonecker
The composition of the larval fish assemblage in the sound-scattering layer of the continental shelf waters off the coast of south-eastern Brazil (12 and 22° S), a research project that is part of the Brazilian programme Avaliação do Potencial Sustentável de Recursos Vivos na Zona Econômica Exclusiva (REVIZEE), is described. Samples were collected during daylight hours and at dusk at five oceanographic stations in the winter of 1999 using an Isaacs-Kidd Midwater Trawl (IKMT). The oceanographic stations were chosen based on the detection of plankton layers by acoustic observation...
October 10, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28990470/reproductive-traits-of-the-duckbill-sleeper-butis-butis-hamilton-1822
#20
Quang Minh Dinh, Tien Thi My Le
Butis butis is a commercially important goby that is widely distributed in Indo-Pacific regions; however, its reproductive biology is poorly characterized. We condcted the present study in estuarine and coastline areas in the Mekong Delta from June 2015 to May 2016 to generate reproductive parameters for this species. The results of data analysis based on a collection of 173 individuals (74 females and 99 males) indicate that the sex ratio of this species is close to 1:1. Mature (stage IV) and ripe (stage V) gonads were found monthly during the study period, suggesting that Butis butis is an iteroparous fish that spawns in a year-round cycle...
October 2017: Zoological Science
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