scholarly journals Host Range of Carp Edema Virus (CEV) during a Natural Mortality Event in a Minnesota Lake and Update of CEV Associated Mortality Events in the USA

Viruses ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 400
Author(s):  
Isaiah E. Tolo ◽  
Soumesh K. Padhi ◽  
Peter J. Hundt ◽  
Przemyslaw G. Bajer ◽  
Sunil K. Mor ◽  
...  
Keyword(s):  
Host Range ◽  
Fish Species ◽  
Virus Transmission ◽  
Mass Mortality ◽  
Native Fish ◽  
Koi Herpesvirus ◽  
Mortality Event ◽  
Mass Mortality Event ◽  
The Usa ◽  
Histological Confirmation

Mass mortality events of common carp (Cyprinus carpio, carp) associated with carp edema virus (CEV) alone or in coinfections with koi herpesvirus (KHV), is an emerging issue. Despite recent outbreaks of CEV in wild carp populations, the host range of North American species has not been well studied. To that end, we intensively sampled carp (n = 106) and co-habiting native fish species (n = 5 species; n = 156 total fish) from a CEV-suspect mass-mortality event of carp in a small Minnesota lake (Lake Swartout). Additionally, fecal and regurgitant samples (n = 73 each) from double-crested cormorants (Phalacrocorax auritus, DCCO) were sampled to test the potential of DCCO to act as a vector for virus transmission. CEV was confirmed to be widespread in the Lake Swartout carp population during the outbreak with high viral loads and histological confirmation, suggesting that CEV was the cause of the mortality event. There were no detections of CEV in any native fish species; however, DCCO regurgitant and fecal samples were positive for CEV DNA. In addition, three CEV-positive and one CEV + KHV-positive mortality events were confirmed with no observed mortality or morbidity of non-carp species in other lakes. This study provides evidence that CEV infection and disease may be specific to carp during mortality events with mixed-species populations, identifies DCCO as a potential vector for CEV, and further expands the known range of CEV, as well as coinfections with KHV, in North America.

scholarly journals Mass mortality event of White Sea sponges as the result of high temperature in summer 2018

Polar Biology ◽  
2019 ◽  
Vol 42 (12) ◽  
pp. 2313-2318 ◽  
Author(s):  
Alexander Ereskovsky ◽  
Dmitry A. Ozerov ◽  
Anatoly N. Pantyulin ◽  
Alexander B. Tzetlin
Keyword(s):  
High Temperature ◽  
White Sea ◽  
Mass Mortality ◽  
Mortality Event ◽  
Mass Mortality Event

scholarly journals Recruitment Disruption and the Role of Unaffected Populations for Potential Recovery After the Pinna nobilis Mass Mortality Event

2020 ◽  
Vol 7 ◽  
Author(s):  
Diego K. Kersting ◽  
Maite Vázquez-Luis ◽  
Baptiste Mourre ◽  
Fatima Z. Belkhamssa ◽  
Elvira Álvarez ◽  
...  
Keyword(s):  
Mass Mortality ◽  
Mortality Event ◽  
Pinna Nobilis ◽  
Mass Mortality Event

scholarly journals S.O.S. Pinna nobilis: A Mass Mortality Event in Western Mediterranean Sea

2017 ◽  
Vol 4 ◽  
Author(s):  
Maite Vázquez-Luis ◽  
Elvira Álvarez ◽  
Agustín Barrajón ◽  
José R. García-March ◽  
Amalia Grau ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Western Mediterranean ◽  
Mass Mortality ◽  
Mortality Event ◽  
Pinna Nobilis ◽  
Mass Mortality Event ◽  
Western Mediterranean Sea

Paramuricea clavata (Anthozoa, Octocorallia) loss in the Marine Protected Area of Tavolara (Sardinia, Italy) due to a mass mortality event

2011 ◽  
Vol 32 ◽  
pp. 107-116 ◽  
Author(s):  
Carla Huete-Stauffer ◽  
Ilaria Vielmini ◽  
Marco Palma ◽  
Augusto Navone ◽  
Pier Panzalis ◽  
...  
Keyword(s):  
Protected Area ◽  
Marine Protected Area ◽  
Mass Mortality ◽  
Mortality Event ◽  
Mass Mortality Event ◽  
Paramuricea Clavata

scholarly journals CHRONOLOGY AND CAUSE OF MASS MORTALITY EVENT ON FISH IN THE LOWER PART OF YAMAIMA RIVER, MIMIKA REGENCY, PAPUA

2018 ◽  
Vol 24 (1) ◽  
pp. 65
Author(s):  
Husnah Husnah ◽  
Chairulwan Umar ◽  
Aroef Hukmanan Rais
Keyword(s):  
Water Quality ◽  
El Niño ◽  
El Nino ◽  
Mass Mortality ◽  
Wild Fish ◽  
Primary Data ◽  
Water Quality Parameter ◽  
Mortality Event ◽  
Mass Mortality Event ◽  
Fish Samples

Mass mortality events (MMEs) on fish tend to increase recently both for cultured and wild fish both in coastal and inland waters. The MMEs on wild fish are mostly unknown. Mass mortality events on wild fishes of Mimika estuary, Papua have been recorded since long time ago and limited information was provided due to its remote area. A rapid appraisal study of mass mortality event (MME) of wild fishes chronology and cause was conducted in Yamaima river to Tifuka Estuary, Papua Province a week after the MME in April 2016. Seven sampling sites were selected. Two activities were conducted during the field survey: interview with the local people to get information on the chronology of the MME and collecting primary data on aquatic environment quality and fish samples. The occurance of goldstripe sardine inYamaima river and Tifuka estuary were triggered by the present of strong El Nino with ONI value more than 0.5oC in the ocean and atmosphere above Equator Pasific. Water quality at MME site was similar with remaining schooling fish and Tifuka estuary sites. Concentration of heavy metals in the sediment tend to decreased along with the distance from the MME site. Mass mortality of goldstripe sardinella could relate to oxygen suffocation as a result of disorentation movement of the fish shoals inaccordance with low tide and new moon phase. The number of the death goldstripe sardinella was estimated 200,000 fish with the weight of 18 tons. To mitigate MMEs in the future, efforts should be done such as: routine early detection of El Nino pattern and its effect on salinity and water temperature raising by placing key water quality parameter buoy in the mouth river of Papua and to set net or stack of logs in the cape area of west tailing levee Yamaima river to prevent the entrapment of migrating small pelagic fish specialy in the closed water area. 

Investigating a whale mass mortality event

2018 ◽  
Vol 183 (7) ◽  
pp. 208-209
Keyword(s):  
North Sea ◽  
Mass Mortality ◽  
Sperm Whales ◽  
Southern North Sea ◽  
Mortality Event ◽  
Mass Mortality Event

In 2016, 30 sperm whales died having stranded in the southern North Sea. Researchers have now investigated what caused this. Georgina Mills reports

scholarly journals The Pathology of Cetacean Morbillivirus Infection and Comorbidities in Guiana Dolphins During an Unusual Mortality Event (Brazil, 2017–2018)

2020 ◽  
Vol 57 (6) ◽  
pp. 845-857 ◽  
Author(s):  
Kátia R. Groch ◽  
Josué Díaz-Delgado ◽  
Elitieri B. Santos-Neto ◽  
Joana M. P. Ikeda ◽  
Rafael R. Carvalho ◽  
...  
Keyword(s):  
Viral Antigen ◽  
Mass Mortality ◽  
Bacterial Disease ◽  
South American ◽  
Mortality Event ◽  
Eubalaena Australis ◽  
Mass Mortality Event ◽  
Southern Right Whales ◽  
Lymphoid Depletion ◽  
Cetacean Morbillivirus

Cetacean morbillivirus (CeMV; Paramyxoviridae) is the most significant pathogen of cetaceans worldwide. The novel “multi-host” Guiana dolphin ( Sotalia guianensis; GD)-CeMV strain is reported in South American waters and infects Guiana dolphins and southern right whales ( Eubalaena australis). This study aimed to describe the pathologic findings, GD-CeMV viral antigen distribution and detection by RT-PCR (reverse transcriptase polymerase chain reaction), and infectious comorbidities in 29 Guiana dolphins that succumbed during an unusual mass-mortality event in Rio de Janeiro state, Brazil, between November 2017 and March 2018. The main gross findings were lack of ingesta, pulmonary edema, ascites, icterus, hepatic lipidosis, multicentric lymphadenomegaly, as well as pneumonia, polyserositis, and multiorgan vasculitis caused by Halocercus brasiliensis. Microscopically, the primary lesions were bronchointerstitial pneumonia and multicentric lymphoid depletion. The severity and extent of the lesions paralleled the distribution and intensity of morbilliviral antigen. For the first time in cetaceans, morbilliviral antigen was detected in salivary gland, optic nerve, heart, diaphragm, parietal and visceral epithelium of glomeruli, vulva, and thyroid gland. Viral antigen within circulating leukocytes suggested this as a mechanism of dissemination within the host. Comorbidities included disseminated toxoplasmosis, mycosis, ciliated protozoosis, and bacterial disease including brucellosis. These results provide strong evidence for GD-CeMV as the main cause of this unusual mass-mortality event.

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