Results 21 to 30 of about 2,165 (248)

Schadwirkungen des Befalls mit Ergasilus bei Schleien [PDF]

open access: yes, 1960
Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in ...
Mann, H.
core   +3 more sources

Fish morphological and parasitological traits as ecological indicators of habitat quality in a Mediterranean coastal lagoon

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 33, Issue 11, Page 1229-1244, November 2023., 2023
Abstract Coastal lagoons are key ‘transitional’ aquatic environments for biodiversity conservation. Ecological indicators are useful tools for the management of water resources in the European Union. Among different biological communities, fish are a very sensitive tool to assess environmental integrity.
David Almeida   +6 more
wiley   +1 more source

Parasites in Leporinus macrocephalus (Anostomidae) of four fish farms from the western Amazon (Brazil)

open access: yesAnais da Academia Brasileira de Ciências, 2021
This study evaluated the presence of metazoan parasites in Leporinus macrocephalus from four fish farms from the western Amazon (Brazil). In 160 fish examined, prevalence was 61.9%, and parasites found were: Urocleidoides paradoxus, Urocleidoides ...
LUCIANO P. NEGREIROS   +2 more
doaj   +1 more source

Ergasilus triangularis sp. n. (COPEPODA: ERGASILIDAE) das BRÂNQUIAS de Laemolyta taeniata (KNER, 1859), (CHARACIFORMES: ANOSTOMIDAE) DA AMAZÔNIA BRASILEIRA [PDF]

open access: yesActa Amazonica, 1994
Ergasilus triangularis sp. nov. (Copepoda, Poecilostomatoida, Ergasilidae) é proposta. Os espécimens foram coletados dos filamentos branquiais de Laemolyta taeniata dos rios Jamari, Guaporé e Pacaás Novos do estado de Rondônia, Brasil. A nova espécie tem
José Celso O. MALTA
doaj   +1 more source

A global review of problematic and pathogenic parasites of farmed tilapia

open access: yesReviews in Aquaculture, Volume 15, Issue S1, Page 92-153, February 2023., 2023
Abstract Over the past 80 years, tilapia have been translocated globally for aquaculture; active production is recorded in >124 countries. Of 7 million tonnes of tilapia produced in aquaculture, 79% is from 79 countries outside the natural range of tilapia.
Andrew P. Shinn   +15 more
wiley   +1 more source

Improving tilapia biosecurity through a value chain approach

open access: yesReviews in Aquaculture, Volume 15, Issue S1, Page 57-91, February 2023., 2023
Abstract Tilapia aquaculture is a major source of animal protein, with global production reaching over 6 million tonnes in 2020. The rapid growth of the tilapia sector has led to a number of emerging disease threats and subsequent production losses. Risk analysis can provide a targeted approach for improving biosecurity in the tilapia sector.
Brett MacKinnon   +5 more
wiley   +1 more source

Seasonality of salmonid parasites from flow‐through aquaculture in northern Germany: Emphasis on pathogenicity of Diplostomum spp. metacercaria

open access: yesAquaculture, Fish and Fisheries, Volume 2, Issue 1, Page 1-11, February 2022., 2022
Abstract The aim of the present study was to identify the parasite fauna of cultured rainbow trout (Oncorhynchus mykiss Walbaum, 1792) and Arctic charr (Salvelinus alpinus (L.)) from a flow‐through aquaculture system at Lake Tollense in northern Germany. The fish were sampled during different seasons in 2018 from an open freshwater raceway. For rainbow
Patrick Unger   +5 more
wiley   +1 more source

PATOLOGIA DE PEIXES DA AMAZÔNIA BRASILEIRA, ALTERAÇÕES HISTOLÓGICAS EM BRÂNQUIAS PROVOCADAS POR ERGASILUS, BRASERGASILUS E ACUSICOLA (CRUSTÁCEA: CYCLOPOIDA: ERGASILIDAE) [PDF]

open access: yesActa Amazonica, 1983
Resumo É descrita a patologia de Ergasilus, Brasergasilus e Acusicola (Crustacea: Cyclopoida: Ergasilidae) em peixes amazônicos. Esses ergasilídeos provocam hiperplasia e metaplasia epitelial e também fusão e destruição lemelar nos filamentos branquiais ...
Vernon E. Thatcher, Walter A. Boeger
doaj   +1 more source

Eye fluke effects on Danish freshwater fish: Field and experimental investigations

open access: yesJournal of Fish Diseases, Volume 44, Issue 11, Page 1785-1798, November 2021., 2021
Abstract Eye flukes in fish are common in freshwater lakes. Fish become infected by the penetration of cercariae released from freshwater snails, and high infection pressures may be associated with mortalities in a Danish lake. Examination of two other freshwater lakes, combined with laboratory study, supported the notion. We investigated 77 freshwater
Yajiao Duan   +5 more
wiley   +1 more source

Effect of the infection of the mugilid fish Planiliza subviridis with the copepod Ergasilus rostralis: A haematological study

open access: yesJournal of biological studies, 2023
A total of 83 specimens of Planiliza subviridis were collected from Khor Al-Zubair lagoon, northwest Arab Gulf, Iraq. These fishes were found infected with the copepod Ergasilus rostralis Ho, Javarajan & Radhakrishnan, 1992.
Salem A. M. Al-Daraji, F. Mhaisen
semanticscholar   +1 more source

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