journal
MENU ▼
Read by QxMD icon Read
search

Diseases of Aquatic Organisms

journal
https://www.readbyqxmd.com/read/29733029/ichthyophonus-in-sport-caught-groundfishes-from-southcentral-alaska
#1
Bradley P Harris, Sarah R Webster, Nathan Wolf, Jacob L Gregg, Paul K Hershberger
This report of Ichthyophonus in common sport-caught fishes throughout the marine waters of southcentral Alaska represents the first documentation of natural Ichthyophonus infections in lingcod Ophiodon elongates and yelloweye rockfish Sebastes ruberrimus. In addition, the known geographic range of Ichthyophonus in black rockfish S. melanops has been expanded northward to include southcentral Alaska. Among all species surveyed, the infection prevalence was highest (35%, n = 334) in Pacific halibut Hippoglossus stenolepis...
May 7, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29733028/green-crab-carcinus-maenas-symbiont-profiles-along-a-north-atlantic-invasion-route
#2
Jamie Bojko, Paul D Stebbing, Alison M Dunn, Kelly S Bateman, Fraser Clark, Rose C Kerr, Sarah Stewart-Clark, Ása Johannesen, Grant D Stentiford
The green crab Carcinus maenas is an invader on the Atlantic coast of Canada and the USA. In these locations, crab populations have facilitated the development of a legal fishery in which C. maenas is caught and sold, mainly for use as bait to capture economically important crustaceans such as American lobster Homarus americanus. The paucity of knowledge on the symbionts of invasive C. maenas in Canada and their potential for transfer to lobsters poses a potential risk of unintended transmission. We carried out a histological survey for symbionts of C...
May 7, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29733027/proteomic-profile-of-ostrea-edulis-haemolymph-in-response-to-bonamiosis-and-identification-of-candidate-proteins-as-resistance-markers
#3
Nuria R de la Ballina, Antonio Villalba, Asunción Cao
European flat oyster Ostrea edulis populations have suffered extensive mortalities caused by bonamiosis. The protozoan parasite Bonamia ostreae is largely responsible for this disease in Europe, while its congener B. exitiosa has been detected more recently in various European countries. Both of these intracellular parasites are able to survive and proliferate within haemocytes, the main cellular effectors of the immune system in molluscs. Two-dimensional electrophoresis was used to compare the haemolymph protein profile between Bonamia spp...
May 7, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29733026/a-pharmaco-epidemiological-study-of-antibacterial-treatments-and-bacterial-diseases-in-norwegian-aquaculture-from-2011-to-2016
#4
Atle Lillehaug, Christine Børnes, Kari Grave
The sales and prescription of antibacterials for use in Norwegian fish-farming according to diagnosis, fish species and production stage from 2011 to 2016 are analysed. The study is based on antibacterial sales data from wholesalers, pharmacies and feed mills and on prescription data obtained from a register of all prescriptions of antibacterials used in farmed fish. The results show that the fish-farming industry uses very small volumes of antibacterials. In 2016, a total of 212 kg were sold; the only antibacterial substances sold were florfenicol and oxolinic acid...
May 7, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29733025/partial-validation-of-a-taqman-real-time-quantitative-pcr-for-the-detection-of-ranaviruses
#5
Natalie K Stilwell, Richard J Whittington, Paul M Hick, Joy A Becker, Ellen Ariel, Steven van Beurden, Niccolò Vendramin, Niels J Olesen, Thomas B Waltzek
Ranaviruses are globally emerging pathogens negatively impacting wild and cultured fish, amphibians, and reptiles. Although conventional and diagnostic real-time PCR (qPCR) assays have been developed to detect ranaviruses, these assays often have not been tested against the known diversity of ranaviruses. Here we report the development and partial validation of a TaqMan real-time qPCR assay. The primers and TaqMan probe targeted a conserved region of the major capsid protein (MCP) gene. A series of experiments using a 10-fold dilution series of Frog virus 3 (FV3) MCP plasmid DNA revealed linearity over a range of 7 orders of magnitude (107-101), a mean correlation coefficient (R2) of >0...
May 7, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29733024/factors-influencing-detection-and-co-detection-of-ranavirus-and-batrachochytrium-dendrobatidis-in-midwestern-north-american-anuran-populations
#6
Katherine Talbott, Tiffany M Wolf, Peter Sebastian, Meagan Abraham, Irene Bueno, Matt McLaughlin, Tara Harris, Rachel Thompson, Allan P Pessier, Dominic Travis
Amphibian populations are in decline worldwide as they face a barrage of challenges, including infectious diseases caused by ranaviruses and the amphibian chytrid fungus Batrachochytrium dendrobatidis (Bd). Here we describe seasonal dynamics of Bd and ranavirus detection in free-ranging post-metamorphic wood frogs Lithobates sylvaticus, boreal chorus frogs Pseudacris maculata/triseriata, and gray treefrogs Hyla versicolor/chrysoscelis, sampled over a 3 season gradient in Minnesota (USA) wetlands. We detected Bd in 36% (n = 259) of individuals sampled in 3 wetlands in 2014, and 33% (n = 255) of individuals sampled in 8 wetlands in 2015...
May 7, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29565257/genotypic-assessment-of-a-dichotomous-key-to-identify-vibrio-coralliilyticus-a-coral-pathogen
#7
Francisca Gleire R Menezes, Wescley E Barbosa, Lorrana S Vasconcelos, Rafael S Rocha, Rodrigo Maggioni, Oscarina V Sousa, Ernesto Hofer, Regine H S F Vieira
Vibrio coralliilyticus is a known pathogen to corals and larvae of bivalves. Its identification is made based on phenotypic and genotypic characters of isolated strains. To evaluate the efficiency of the phenotypic identification, 21 strains identified as V. coralliilyticus using a widely used dichotomous key were analyzed by qualitative PCR and sequencing of the 16S rDNA region. The results obtained by the behavioral test, amino acids usage, allow us to distinguish 3 A/L/O profiles: (1) A+/L-/O+; (2) A+/L+/O+; and (3) A-/L+/O+...
March 22, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29565256/host-range-and-influence-of-a-cell-capsule-on-the-phage-efficacy-of-three-lactococcus-garvieae-lytic-phages
#8
Truong Dinh Hoai, Issei Nishiki, Terutoyo Yoshida, Toshihiro Nakai
Three lytic phages (PLgW-1, PLgY-16, and PLgY-30) were previously used for phage-typing Lactococcus garvieae, a bacterial pathogen of various marine fish species, and were demonstrated to be potential therapeutants for infections caused by L. garvieae. The morphology, host range, and efficacy of these phages have not been investigated in detail, however. The current study examined the lysis spectrum of these 3 phages against 16 different genotypes of L. garvieae and the influence of a bacterial capsule on phage efficacy, to aid in developing an effective treatment for lactococcosis in fish...
March 22, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29565255/pulmonary-and-systemic-fungal-infections-in-an-atlantic-spotted-dolphin-and-a-bryde-s-whale-brazil
#9
Kátia R Groch, Josué Díaz-Delgado, Carlos Sacristán, Denyiélim E Oliveira, Gabriela Souza, Angélica M Sánchez-Sarmiento, Samira Costa-Silva, Juliana Marigo, Pedro V Castilho, Marta J Cremer, Aline Rodrigues Hoffmann, Fernando Esperón, José L Catão-Dias
We report the gross and microscopic findings and molecular identification of 2 cases of hyphate fungal infection in cetaceans from Brazil. The first case involved an adult male Atlantic spotted dolphin Stenella frontalis with localized pulmonary disease characterized by pyogranulomatous and necrotizing bronchopneumonia with intralesional hyphae. The second case involved an adult male Bryde's whale Balaenoptera edeni with orchitis, periorchitis, mesenteric lymphadenitis and pyogranulomatous bronchopneumonia with intralesional hyphae...
March 22, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29565254/influence-of-salinity-and-sedimentation-on-vibrio-infection-of-the-hawaiian-coral-montipora-capitata
#10
A Shore-Maggio, G S Aeby, S M Callahan
Environmental cofactors alter host-pathogen interactions and influence disease dynamics by impairing host resistance and/or increasing pathogen virulence. Terrestrial runoff is recognized as a major threat to coral reef health. However, the direct links between runoff and coral disease are not clear. Montipora white syndrome (MWS) is a coral disease that occurs in the Hawaiian archipelago, can be caused by various bacterial pathogens, including Vibrio species, and is linked to conditions associated with heavy rainfall and runoff...
March 22, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29565253/virulence-marker-candidates-in-n-protein-of-viral-haemorrhagic-septicaemia-virus-vhsv-virulence-variability-within-vhsv-ib-clones
#11
Takafumi Ito, Jun Kurita, Koh-Ichiro Mori, Helle Frank Skall, Niels Lorenzen, Niccolò Vendramin, Nikolaj Gedsted Andersen, Katja Einer-Jensen, Niels Jørgen Olesen
Four major genotypes of viral haemorrhagic septicaemia virus (VHSV), which have been isolated from many marine and freshwater fish species, are known to differ in virulence. While fast and low-cost genotyping systems based on monoclonal antibodies (MAbs) have been developed for typing of VHSV virulence, there is a need for supplementing the knowledge. In particular, 2 field isolates from viral haemorrhagic septicaemia (VHS) outbreaks in sea-reared rainbow trout Oncorhynchus mykiss in Sweden, SE-SVA-14 and SE-SVA-1033 (both genotype Ib), have yielded contradictory reactions...
March 22, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29565252/new-myxosporeans-parasitizing-phractocephalus-hemioliopterus-from-brazil-morphology-ultrastructure-and-ssu-rdna-sequencing
#12
Juliana Naldoni, Antônio A M Maia, Lincoln L Correa, Marcia R M da Silva, Edson A Adriano
Myxozoans are a diverse group of parasitic cnidarians, with some species recognized as serious pathogens to their hosts. The present study describes 2 new myxobolid species (Myxobolus figueirae sp. nov. and Henneguya santarenensis sp. nov.) infecting skin and gill filaments of the Amazonian pimelodid fish Phractocephalus hemioliopterus, based on ultrastructural, histology and phylogenetic analysis. The fish were caught in the Amazon River, Pará, Brazil. The plasmodial development of M. figueirae sp. nov. was in the dermis and those of H...
March 22, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29565251/presence-of-selected-pathogens-on-the-gills-of-five-wrasse-species-in-western-norway
#13
A Steigen, A Nylund, H Plarre, K Watanabe, E Karlsbakk, Ø Brevik
The objective of this study was to identify gill pathogens in Labridae (wrasse) species used as cleaner fish to control salmon louse in western Norwegian aquaculture. Wrasse are often moved over long distances, raising issues of fish health, welfare and pathogen transmission. Histological examination and real-time RT-PCR analysis of the gills from Centrolabrus exoletus, Ctenolabrus rupestris, Labrus bergylta, L. mixtus and Symphodus melops revealed several pathogens: a new species of Ichthyobodo, Paramoeba perurans, microsporidia, trichodinids, Hatschekia spp...
March 22, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29565250/first-isolation-of-brucella-pinnipedialis-and-detection-of-brucella-antibodies-from-bearded-seals-erignathus-barbatus
#14
Geoffrey Foster, Ingebjørg H Nymo, Kit M Kovacs, Kimberlee B Beckmen, Andrew C Brownlow, Johanna L Baily, Mark P Dagleish, Jakub Muchowski, Lorraine L Perrett, Morten Tryland, Christian Lydersen, Jacques Godfroid, Barry McGovern, Adrian M Whatmore
Brucella species infecting marine mammals was first reported in 1994 and in the years since has been documented in various species of pinnipeds and cetaceans. While these reports have included species that inhabit Arctic waters, the few available studies on bearded seals Erignathus barbatus have failed to detect Brucella infection to date. We report the first isolation of Brucella pinnipedialis from a bearded seal. The isolate was recovered from the mesenteric lymph node of a bearded seal that stranded in Scotland and typed as ST24, a sequence type associated typically with pinnipeds...
March 22, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29565249/lobomycosis-like-disease-in-common-bottlenose-dolphins-tursiops-truncatus-from-belize-and-mexico-bridging-the-gap-between-the-americas
#15
Eric A Ramos, Delma N Castelblanco-Martínez, Jazmin Garcia, Jorge Rojas Arias, James R Foley, Katherina Audley, Koen Van Waerebeek, Marie-Françoise Van Bressem
Lobomycosis and lobomycosis-like diseases (LLD) (also: paracoccidioidomycosis) are chronic cutaneous infections that affect Delphinidae in tropical and subtropical regions worldwide. In the Americas, these diseases have been relatively well-described, but gaps still exist in our understanding of their distribution across the continent. Here we report on LLD affecting inshore bottlenose dolphins Tursiops truncatus from the Caribbean waters of Belize and from the eastern tropical Pacific Ocean off the southwestern coast of Mexico...
March 22, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29516864/systematic-approach-to-isolating-batrachochytrium-dendrobatidis
#16
Anthony W Waddle, Marlai Sai, Joshua E Levy, Ghazal Rezaei, Frank van Breukelen, Jef R Jaeger
We developed a protocol for isolating the amphibian chytrid fungus Batrachochytrium dendrobatidis (Bd) from anurans. We sampled skin tissues from 2 common treefrogs, Pseudacris regilla and P. triseriata, collected from populations with high infection prevalence. We sampled tissues from 3 anatomical ventral regions (thigh, abdomen, and foot) where the pathogen is thought to concentrate. To mitigate potential bacterial contamination, we used a unique combination of 4 antibiotics. We quantified infections on frogs as zoospore equivalents (ZE) using a swabbing approach combined with quantitative real-time polymerase chain reaction...
March 5, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29516863/survival-rates-and-the-occurrence-of-larval-malformations-including-siamese-twins-following-fertilization-of-post-ovulatory-aged-oocytes-in-ide-leuciscus-idus
#17
Joanna Nowosad, Mateusz Sikora, Dariusz Kucharczyk
Embryonic development of lower vertebrates can be influenced by many factors, especially when outside of the mother's body and under the influence of variable abiotic and biotic factors. In this study, the effects of fertilization of post-ovulatory aged (overmature) oocytes of ide Leuciscus idus on the risk of developing anomalies in ide larvae were assessed under controlled conditions. There was a negative effect of delayed fertilization of post-ovulatory aged (overmature) oocytes in the ovary on the quality of offspring, which caused reduced survival 3 days post-fertilization and at the hatching stage (68...
March 5, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29516862/cutaneous-mycobacteriosis-in-a-captive-amazonian-manatee-trichechus-inunguis
#18
Laura Reisfeld, Cássia Yumi Ikuta, Laura Ippolito, Bruna Silvatti, José Soares Ferreira Neto, José Luiz Catão-Dias, Fernando C W Rosas, José Anselmo Neto, Vera M F da Silva
An adult male Amazonian manatee Trichechus inunguis under human care presented with 3 circular cutaneous lesions on the dorsal aspect of the rostrum and between the nostrils (plenum). Initially these lesions were superficial, hypopigmented, without warmth and non-painful. Microbiological cultures of skin swabs isolated Candida sp. and Pseudomonas aeruginosa, and topical treatment with antiseptic, antifungal, anti-inflammatory and antibiotic medication was instituted. This treatment strategy did not lead to any clinical improvement, and after 6 mo, the lesions progressed to a confluent abscess (5...
March 5, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29516861/multicentric-plasmacytoma-in-a-harbor-porpoise-phocoena-phocoena-off-the-coast-of-whidbey-island-washington-state-usa
#19
Barry H Rickman, Tim Morgan, Matthew Klope, Susan Berta, Sandra Dubpernell, Howard Garrett, Mary Jo Adams, Stephanie A Norman
Necropsy of a female adult pregnant harbor porpoise Phocoena phocoena revealed a multicentric plasmacytoma. The plasmacytoma infiltrated the cranial lung lobes, mediastinal lymph nodes and the spleen. Diagnosis was based on gross, histopathologic and immunohistochemical studies. Histopathology revealed a diffuse proliferation of atypical pleomorphic neoplastic round cells with plasmacytic features. Positive immunohistochemistry with anti-CD79a and anti-CD20 antibody markers and anti-multiple myeloma oncogene 1 (MUM-1) for plasmacytoma confirmed this neoplasm to be of B-cell origin...
March 5, 2018: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/29516860/methodological-issues-affecting-the-study-of-fish-parasites-iii-effect-of-fish-preservation-method
#20
Yuriy Kvach, Markéta Ondračková, Michal Janáč, Pavel Jurajda
The aim of this study was to evaluate the influence of preservation method on the results of parasite community studies. Two host species, European perch Perca fluviatilis and European bitterling Rhodeus amarus, were examined for parasites after having been subjected to 4 different storage treatments: freezing, preservation in 4% formaldehyde or 70% ethanol and transportation of live (fresh) fish as a control. Preservation prior to dissection resulted in a loss of information, leading to incomplete quantitative data (all preservation treatments), qualitative data (ethanol and formaldehyde preservation) and a lowered ability to determine parasites to species level based on morphology compared to dissecting fresh fish...
March 5, 2018: Diseases of Aquatic Organisms
journal
journal
29868
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"