Histopathological observation and health status of the zebra-snout seahorse Hippocampus barbouri Jordan & Richardson, 1908 in captivity
0301 basic medicine
Histology
Physiology
Veterinary medicine
Juvenile
Aquatic Science
Kidney
Hippocampus
Agricultural and Biological Sciences
Habitat Use
03 medical and health sciences
Endocrinology
SF600-1100
Pathology
Genetics
14. Life underwater
Conservation of Sharks and Rays
Biology
Nature and Landscape Conservation
0303 health sciences
Life Sciences
Seahorse
Length-Weight Relationships of Fish Species
Captivity
3. Good health
FOS: Biological sciences
Environmental Science
Physical Sciences
Life History and Ecology of Seahorses
Medicine
Zoology
DOI:
10.12982/vis.2021.027
Publication Date:
2021-11-26T10:13:46Z
AUTHORS (17)
ABSTRACT
The health status of the zebra-snout seahorse, Hippocampus barbouri in captivity has been required for approval for aquaculture. In this study, we investigated the histopathological appearance of three vital organs including gill, kidney and liver in captive H. barbouri during its juvenile and adult stages, by using histological techniques. In juveniles from stage 14-days (100% prevalence) towards stage 30-days adults (100% prevalence), the gills exhibited intraepithelial edema and necrosis while hepatic tissue showed evidence of intracytoplasmic vacuoles. In addition, histological alteration to renal tissues was observed the degeneration of renal tubules, the presence of melanomacrophage, and the infection of trematode parasites. The parasites were found in stage 30-days adult fish in the kidney (33.3 % prevalence). Taken together, this study highlights the issue of health in captive rearing of H. barbouri, in particular histopathological alterations in gill, liver and kidney tissues, suggesting that aquaculture of this seahorse species requires improved methods and protocols for maintenance and preventing infection.
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