Abstract
Results of long-term research of tumorous disease in internals of two sprat species dwelling in the Caspian Sea ( Clupeonella delicatula and C. engrauliformes ) are presented. Pathological changes are similar for both species: they are mainly tumorogenesis and abnormalities in hemodynamics and morphology of parenchymatous and reproductive organs. The visceral neoplasms are diagnosed as malignant insulocarcinomas with conditionally pathogenic micromycetes in their granulomas (identified on smears of liver and spleen). Pathogenic Hyphomycetes fungi are detected in injured organs, mostly of the genus Aspergillus. The disease is registered for all age groups of fish but is more apparent for middle and elder ages. The morbidity has strong seasonal and year-to-year variability with the maximum in 2014. Pollution of marine environments contributes to development of the epizootic process.
Highlights
Results of long-term research of tumorous disease in internals of two sprat species dwelling in the Caspian Sea (Clupeonella delicatula and C. engrauliformes) are presented
Pathological changes are similar for both species: they are mainly tumorogenesis and abnormalities in hemodynamics and morphology of parenchymatous and reproductive organs
The visceral neoplasms are diagnosed as malignant insulocarcinomas with conditionally pathogenic micromycetes in their granulomas
Summary
Представлены результаты многолетних исследований опухолевого заболевания внутренних органов каспийских килек. Висцеральные новообразования обоих видов каспийских килек диагностированы как инсулокарциномы, в гранулемах которых присутствовали условнопатогенные микромицеты, определенные на мазках-отпечатках печени и селезенки. Из пораженных органов выделены условно-патогенные грибы класса Hyphomycetes с доминированием рода Aspergillus. Болезнь регистрировали у всех возрастных групп рыб, но наиболее ярко она проявлялась у килек среднего и старшего возраста. Results of long-term research of tumorous disease in internals of two sprat species dwelling in the Caspian Sea (Clupeonella delicatula and C. engrauliformes) are presented. Онкомониторинг промысловых видов рыб Волго-Каспийского бассейна за последние десятилетия показал, что если в конце прошлого столетия новообразования различной классификации и локализации массово отмечали у сома и судака, то в настоящее время, помимо этих видов, опухоли стали выявлять у леща, сазана и других представителей ихтиофауны. Цель данной работы — дать оценку состояния каспийских килек, определить динамику опухолевого заболевания
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
