Polycyclic aromatic hydrocarbons in the cestode Oncomegas wageneri parasite of Mexican flounder Cyclopsetta chittendeni

• Published in: Parasitology research (1987) Vol. 119; no. 3; pp. 903 - 913
• Main Authors: Soler-Jiménez, Lilia C., Hernández-Núñez, Emanuel, Velázquez-Abunader, Iván, Centeno-Chalé, Arturo, Vidal-Martínez, Víctor M.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2020; Springer; Springer Nature B.V
• Subjects: 1-Hydroxypyrene; Analysis; Animals; Benzo(a)pyrene; Bile; Bioaccumulation - physiology; Biomedical and Life Sciences; Biomedicine; Cestoda - chemistry; Cyclopsetta chittendeni; Fish Diseases - parasitology; Fish Parasitology - Original Paper; Fishes; Flounder - parasitology; Fluorescence; Fluorescence spectroscopy; Gulf of Mexico; Immunology; Intestine; Larva - chemistry; Medical Microbiology; Metabolites; Microbiology; Oncomegas wageneri; Polycyclic aromatic hydrocarbons; Polycyclic Aromatic Hydrocarbons - analysis; Pyrene; Spectrometry, Fluorescence; Gulf of Mexico; Parasite; Flatfish; Bioaccumulation; Bioindicator; Contamination; Oncomegas wageneri
• ISSN: 0932-0113; 1432-1955
• DOI: 10.1007/s00436-019-06597-z

The concentrations of polycyclic aromatic hydrocarbon metabolites (PAHm) and their bioconcentration factors (BCF) were determined in the larval stages of the cestode Oncomegas wageneri , recovered from the intestine of the Mexican flounder Cyclopsetta chittendeni , in the southern Gulf of Mexico. The PAHm concentrations in O. wageneri were measured using fixed-wavelength fluorescence spectrometry and compared with PAHm concentrations in host bile. Oncomegas wageneri PAHm concentrations were markedly higher than those in host tissues. The highest BCF values were obtained for 1-hydroxypyrene (OHP) and benzo(a)pyrene (BaP). Using a General Linear Model, a significant negative relationship was found between O. wageneri PAHm concentrations (as response variable) and the number of O. wageneri and oil well proximity. Low BCF values and PAHm concentrations in C. chittendeni correlated positively with O. wageneri PAHm concentrations. In contrast, high BCF values for PAHm concentrations in C. chittendeni had a negative association with O. wageneri PAHm concentrations. This study provides the first evidence of the presence of PAHm in intestinal larval cestodes of marine flatfishes, demonstrating levels of PAHm that were higher than levels in their hosts.