English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/193331
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Immune parameters in the common octopus (Octopus vulgaris Cuvier, 1797) naturally infected by the gastrointestinal protozoan parasite Aggregata octopiana

AuthorsCastellanos-Martínez, Sheila ; Gestal, C.
KeywordsOctopus vulgaris
Hemocytes
Aggregata octopiana
Innate immune response
Wild and reared octopuses
Issue Date2018
PublisherElsevier
CitationAquaculture 497: 487-493 (2018)
AbstractHealth of wild and reared Octopus vulgaris is threatened by the most dangerous parasite for the octopus, the protozoan coccidia Aggregata octopiana. This host-parasite relationship was studied to analyze the effect of A. octopiana on the cellular immune parameters of O. vulgaris. A. octopiana sporocysts infecting the digestive tract of octopuses were counted in order to confirm two octopus groups of infection: 1) healthy (low parasite load, without histological caecum damage) and 2) sick (high parasite load and strong histological caecum damage). Cellular defense parameters (phagocytosis, respiratory burst (ROS) and nitric oxide (NO) production) were measured in the octopus hemolymph. In addition, i) infection degree (total parasitic infection or distributed by groups of infection (sick/healthy)), ii) octopus origin (wild or reared in floating cages), biometric data (sex, length, weight, maturity) and iii) season of collection were tested to know their contribution to the octopus cellular response. Results showed that season of collection and total parasitic infection were the most important factors affecting the phagocytic ability of hemocytes. Phagocytosis increased accordingly to the infection intensity and was particularly higher in Autumn (P < .01) relative to Winter and Spring. ROS (P < .01) and NO (P < .1) production decreased with the A. octopiana infection increase. Related to biometric data, a markedly decrease in NO was observed in heaviest octopuses (P < .01). Comparing wild and reared octopuses, the cytotoxic activity notably decreased in the former group. The present results evidenced for the first time that the intensity of infection by A. octopiana severely weaken the octopus cellular immune response
Description7 pages, 2 tables, 3 figures
Publisher version (URL)https://doi.org/10.1016/j.aquaculture.2018.08.022
URIhttp://hdl.handle.net/10261/193331
DOI10.1016/j.aquaculture.2018.08.022
ISSN0044-8486
Appears in Collections:(IIM) Artículos
Files in This Item:
File Description SizeFormat 
Immune_parameters_2018.pdf Embargoed until December 1, 20203,12 MBAdobe PDFThumbnail
View/Open    Request a copy
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.