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Journal Dis Aquat Organ

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Marine leech parasitism of sea turtles varies across host species, seasons, and the tumor disease fibropapillomatosis.

Leah T Rittenburg, Jake R Kelley, Kate L Mansfield, Anna E Savage,

Fibropapillomatosis (FP) is a tumorous disease affecting all species of sea turtles and is associated with the pathogen chelonid alphaherpesvirus 5 (ChHV5). Hypothesized ChHV5 vectors include the marine leeches Ozobranchus branchiatus and O. margoi, but data on their associations with FP and ChHV5 are minimal. To establish relationships between leech ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2021, 143:1-12]

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Causes of cetacean stranding and death on the Catalonian coast (western Mediterranean Sea), 2012-2019.

María Cuvertoret-Sanz, Carlos López-Figueroa, Alicia O'Byrne, Albert Canturri, Bernat Martí-Garcia, Ester Pintado, Lola Pérez, Llilianne Ganges, Alex Cobos, María Lourdes Abarca, Juan Antonio Raga, Marie-François Van Bressem, Mariano Domingo,

The causes of cetacean stranding and death along the Catalan coast between 2012 and 2019 were systematically investigated. Necropsies and detailed pathological investigations were performed on 89 well-preserved stranded cetaceans, including 72 striped dolphins Stenella coeruleoalba, 9 Risso's dolphins Grampus griseus, 5 bottlenose dolphins Tursiops truncatus, 1 common dolphin Delphinus ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:239-253]

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Gas embolism and massive blunt force trauma to sea turtles entrained in hopper dredges in North and South Carolina, USA.

Craig A Harms, Shane M Boylan, Brian A Stacy, Jean F Beasley, Daniel García-Párraga, Matthew H Godfrey,

Decompression sickness (DCS) has been described mainly in loggerhead turtles Caretta caretta bycaught in trawls and gillnets. Here we present cases of gas emboli (GE) in 8 green turtles Chelonia mydas and 2 Kemp's ridleys Lepidochelys kempii entrained in hopper dredges that were working at 8.8-15.2 m depths during shipping ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:189-196]

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Streptococcus iniae associated mass marine fish kill off Western Australia.

Erina J Young, Jo Bannister, Nicky B Buller, Rebecca J Vaughan-Higgins, Nahiid S Stephens, Scott D Whiting, Lian Yeap, Terrence L Miller, Kristin S Warren,

Streptococcus iniae causes high mortality in cultured and wild fish stocks globally. Since the first report in captive Amazon river dolphins Inia geoffrensis in 1976, it has emerged in finfish across all continents except Antarctica. In March 2016, an estimated 17000 fish were observed dead and dying along a remote ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:197-201]

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Efficacy of nano zinc oxide dietary supplements on growth performance, immunomodulation and disease resistance of African catfish Clarias gariepinus.

Heba H Mahboub, Khalid Shahin, Asmaa W Zaglool, Elshimaa M Roushdy, Shaimaa A A Ahmed,

Zinc (Zn) is an important trace element in fish diets that is required for growth, immunity and antioxidant defense mechanisms. The current study assessed the effects of both organic and nanoparticle zinc oxide (ZnO and ZnO-NPs, respectively) on growth performance, immune response and the antimicrobial effect against Pseudomonas aeruginosa in ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:147-160]

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Nanopore whole genome sequencing and partitioned phylogenetic analysis supports a new salmonid alphavirus genotype (SAV7).

Andrew J Tighe, Michael D Gallagher, Jens Carlsson, Iveta Matejusova, Fiona Swords, Daniel J Macqueen, Neil M Ruane,

Salmon pancreas disease virus, more commonly known as salmonid alphavirus (SAV), is a single-stranded positive sense RNA virus and the causative agent of pancreas disease and sleeping disease in salmonids. In this study, a unique strain of SAV previously isolated from ballan wrasse was subjected to whole genome sequencing using ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:203-211]

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Serological screening for Brucella spp. and Leptospira spp. antibodies in southern elephant seals Mirounga leonina from Elephant Island, Antarctica, in 2003 and 2004.

Angélica Maria Sánchez-Sarmiento, Valeria Ruoppolo, Mônica Mathias Muelbert, José Soares Ferreira Neto, José Luiz Catão-Dias,

Brucella spp. and Leptospira spp. antibodies were surveyed in 35 southern elephant seals (SESs) Mirounga leonina at Elephant Island (South Shetland Islands), western Antarctic peninsula, in the Austral summer of 2003 and 2004. The rose Bengal test and a commercial competitive ELISA (c-ELISA) were used to detect Brucella spp. exposure, ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:161-170]

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Association between ALFPm3 single nucleotide polymorphism and white spot syndrome virus resistance in black tiger shrimp Penaeus monodon.

Chettupon Pooljun, Pitchanee Jariyapong, Sataporn Direkbusarakom, Sudarat Saeng-Ngern, Takashi Sakamoto, Suwit Wuthisuthimethavee,

Here single nucleotide polymorphisms (SNPs) were associated with white spot syndrome virus (WSSV) resistance in black tiger shrimp Penaeus monodon. SNPs were identified by single-strand conformation polymorphism (SSCP) screening and DNA sequencing of shrimp sampled from 3 families (100 shrimp per family) challenged with WSSV. Shrimp that died over the ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:213-224]

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Seasonal prevalence of the amphibian chytrid in a tropical pond-dwelling tadpole species.

Joice Ruggeri, Ana Glaucia Da Silva Martins, Adão Henrique Domingos, Isaias Santos, Imran Bharat Viroomal, Luís Felipe Toledo,

Infection by the chytrid fungus Batrachochytrium dendrobatidis (Bd) is a major threat to amphibians and has caused catastrophic global declines of amphibian populations. Some studies have detected a seasonal pattern of infection associated with the local climate, and although most of them have focused on investigating the seasonality of Bd ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:171-176]

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Locality, time and heterozygosity affect chytrid infection in yellow-bellied toads.

Pia Oswald, Ariel Rodríguez, Johara Bourke, Norman Wagner, Nicole de Buhr, Holger Buschmann, Maren von Köckritz-Blickwede, Heike Pröhl,

The chytrid fungus Batrachochytrium dendrobatidis (Bd) infects numerous amphibian species worldwide and is suggested to drive population declines and extinction events. We report a study of Bd infection at the northernmost distribution of the European yellow-bellied toad Bombina variegata. A total of 577 individuals from ponds in 16 study sites ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:225-237]

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Differential liver histopathological responses to amphibian chytrid infection.

Raquel F Salla, Monica Jones-Costa, Fabio C Abdalla, Felipe A P Vidal, Guilherme A N S Boeing, Cristiane R Oliveira, Elaine C M Silva-Zacarin, Lilian Franco-Belussi, Gisele M Rizzi-Possignolo, Carolina Lambertini, Luís F Toledo,

Amphibians have been facing a pandemic caused by the deadly fungus Batrachochytrium dendrobatidis (Bd). Although studies have elucidated cutaneous and homeostatic disturbances, it is still unknown if the hepatic function can be affected or if hepatic effects differ among host species. Thus, we evaluated the effects of an experimental Bd ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:177-187]

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An outbreak of multidrug-resistant Salmonella Kentucky infection in long-nosed fur seals.

David J Blyde, Duan March, Peter Howard, Vitali Sintchenko, Estelle Rousselet, Cathrine Atkin,

An outbreak of salmonellosis occurred in a group of 7 long-nosed fur seals Arctocephalus forsteri undergoing rehabilitation after being found injured and malnourished on beaches along the northern New South Wales and southern Queensland coasts of Australia. Three of the 7 individuals developed clinical disease and died within 3 d. ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:119-124]

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Defining the aetiology of amoebic diseases of aquatic animals: trends, hurdles and best practices.

Chloe J English, Paula C Lima,

Disease caused by parasitic amoebae impacts a range of aquatic organisms including finfish, crustaceans, echinoderms and molluscs. Despite the significant economic impact caused in both aquaculture and fisheries, the aetiology of most aquatic amoebic diseases is uncertain, which then affects diagnosis, treatment and prevention. The main factors hampering research effort ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:125-143]

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Surveying for Batrachochytrium salamandrivorans presence in Spanish captive collections of amphibians.

D Lastra González, V Baláž, P Chajma, J Vojar,

Batrachochytrium salamandrivorans (Bsal), a pathogenic fungus causing the fatal disease chytridiomycosis in amphibians, was likely introduced to Europe through the trade in pet salamanders from Asia and then escaped into wild populations. Among European countries, Spain has a large number of private breeders and keepers of pet salamanders, and cases ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:99-103]

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Exposure of the Gulf of St. Lawrence grey seal Halichoerus grypus population to potentially zoonotic infectious agents.

Caroline C Sauvé, Adrián Hernández-Ortiz, Emily Jenkins, Fabien Mavrot, Angela Schneider, Susan Kutz, Jeremiah T Saliki, Pierre-Yves Daoust,

The population of grey seals Halichoerus grypus in Canadian waters is currently used as a commercial source of meat for human consumption. As with domestic livestock, it is important to understand the occurrence in these seals of infectious agents that may be of public health significance and thus ensure appropriate ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:105-118]

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Ellipsomyxa ariusi sp. nov. (Myxosporea: Ceratomyxidae), a new myxosporean infecting the gallbladder of threadfin sea catfish Arius arius in India.

Archana Chandran, P U Zacharia, T V Sathianandan, N K Sanil,

The present study describes a new species of myxosporean, Ellipsomyxa ariusi sp. nov., infecting the gallbladder of the threadfin sea catfish Arius arius (Hamilton, 1822). E. ariusi sp. nov. is characterized by bivalvular, ellipsoid or elongate-oval myxospores with smooth spore valves and a straight suture, arranged at an angle to ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:83-97]

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Campylobacter pinnipediorum subsp. caledonicus and C. pinnipediorum subsp. pinnipediorum recovered from abscesses in pinnipeds.

Geoffrey Foster, Johanna L Baily, Fiona Howie, Andrew C Brownlow, Jaap A Wagenaar, Maarten J Gilbert, William G Miller, Barbara A Byrne, Kristin A Clothier, Todd Schmitt, Tony Patterson, Robert J Reid, Mark P Dagleish,

Campylobacter pinnipediorum was described recently for isolates recovered from pinnipeds. The novel species was further split into 2 subspecies based on host and geography, with C. pinnipediorum subsp. pinnipediorum recovered from otariid seals in California (USA) and C. pinnipediorum subsp. caledonicus recovered from phocid seals in Scotland. We report details ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:41-46]

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Emamectin benzoate is a safe and effective anthelmintic against coelomic nematode Philometra rubra in striped bass Morone saxatilis.

Karine Béland, Guylaine Séguin, Stéphane Lair,

An unusually high mortality rate due to verminous (Philometra rubra) coelomitis was documented in wild-hatched striped bass Morone saxatilis raised in a fish hatchery as part of a stock restoration program. To decrease the parasitic burden and therefore potentially minimize mortality, the effectiveness of 2 different anthelmintics was evaluated. Two ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:47-53]

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Pulmonary hair embolism in a rescued free-ranging Eurasian otter Lutra lutra in Kinmen, Taiwan.

Wen-Ta Li, Yi-Lun Chiang, Ting-Yu Chen, Chiao-Ling Lai,

Eurasian otters Lutra lutra are listed as Near Threatened on the IUCN Red List and are imperiled by habitat loss, water pollution, and poaching. Harassment and attacks by stray animals are also recognized threats to the health of wild Eurasian otters. Pulmonary hair embolism is a possible complication in animals ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:55-61]

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Cytology reveals diverse cell morphotypes and cellin-cell interactions in normal collector sea urchins Tripneustes gratilla.

Thierry M Work, Elena Millard, Daniela B Mariani, Tina M Weatherby, Robert A Rameyer, Julie Dagenais, Renee Breeden, Allison M Beale,

Echinoderms such as sea urchins are important in marine ecosystems, particularly as grazers, and unhealthy sea urchins can have important ecological implications. For instance, unexplained mortalities of Diadema antillarum in the Caribbean were followed by algal overgrowth and subsequent collapse of coral reef ecosystems. Unfortunately, few tools exist to evaluate ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:63-73]

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Morphological, histological, and molecular aspects of Myxobolus zaikae n. sp., a parasite of the roach Rutilus rutilus, in Lake Baikal.

Marina Dashi-Dorjievna Batueva,

A new myxobolid species, Myxobolus zaikae n. sp., was found in the connective tissue near the kidney and liver blood vessels of the common roach Rutilus rutilus, while fish myxosporean fauna were being investigated in Lake Baikal, Russia. The parasites were studied on the basis of spore morphology as well ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:75-82]

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Tuberculosis in wild South American sea lions Otaria flavescens stranded in Chubut, Argentina.

Carla Fiorito, Jimena Marfil, Elvira Falzoni, Marcela Martínez Vivot, Martín Zumárraga, Daniel Lombardo, Soledad Barandiaran,

Pinniped tuberculosis, commonly caused by Mycobacterium pinnipedii, is a zoonotic disease reported in free-living and captive otariid species of the southern hemisphere. Currently, data concerning pinniped tuberculosis in South America are scarce, reinforcing the need for further studies of the disease in free-ranging pinnipeds. In this study, we investigated the ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:33-40]

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High prevalence of biliary neoplasia in white perch Morone americana: potential roles of bile duct parasites and environmental contaminants.

Mark A Matsche, Vicki S Blazer, Erin L Pulster, Patricia M Mazik,

Recent surveys of white perch Morone americana from Chesapeake Bay, USA, revealed a high prevalence of hepatic and biliary lesions, including neoplasia, and bile duct parasites. Here, we describe lesions in the liver and gallbladder and evaluate for statistical associations among lesions, parasites, and biomarkers of chemical exposure in fish ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 141:195-224]

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Betanodavirus infection in Kuhlia rupestris and Ambassis marianus and isolation of betanodavirus from infected pond water.

Kalpana Agnihotri, Roger Chong, Darren Underwood, Carol Kistler, Michael Hutchison,

This is the first report of betanodavirus infection in 2 species of finfish, Kuhlia rupestris (jungle perch) and Ambassis marianus (estuary perchlet). This report also describes isolation of betanodavirus from infected pond water using the SSN-1 cell line. Histopathology of K. rupestris larvae revealed vacuolation in the eye and brain, ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:1-11]

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Nocardia seriolae: a serious threat to the largemouth bass Micropterus salmoides industry in Southwest China.

Xueping Lei, Ruoxuan Zhao, Yi Geng, Kaiyu Wang, Ping Ou Yang, Defang Chen, Xiaoli Huang, Zhicai Zuo, Changliang He, Zhengli Chen, Chao Huang, Hongrui Guo, Weimin Lai,

Nocardia seriolae is the causative agent of nocardiosis in both marine and freshwater fish. Here, we report on multiple outbreaks of nocardiosis associated with elevated mortality (23-35%) in farmed largemouth bass in Sichuan, China, from 2017 to 2018. A total of 9 strains isolated from diseased largemouth bass were identified ... Read more >>

Dis Aquat Organ (Diseases of aquatic organisms)
[2020, 142:13-21]

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