Monthly and inter-annual variations of Opechona sp. (Digenea: Lepocreadiidae) parasitizing scyphomedusae off southern Brazil

Monthly and inter-annual variations of Opechona sp. (Digenea: Lepocreadiidae) parasitizing scyphomedusae off southern Brazil

Monthly and inter-annual variations of prevalence (P) and intensity of infection (I) of Opechona sp. metacercariae were analyzed in the two most common scyphomedusae from south Brazil (~25.5°S, 48.4°W), between November 1997 and December 2004. Chrysaora lactea was highly parasitized (n = 817; P ≈ 41...

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Veröffentlicht in:Marine biology 2015-02, Vol.162 (2), p.391-400
Hauptverfasser: Nogueira Júnior, Miodeli, Diaz Briz, Luciana Mabel, Haddad, Maria Angelica
Format: Artikel
Sprache:eng
Schlagworte:
Annual variations
Aquatic life
Biomedical and Life Sciences
Chrysaora lactea
correlation
Digenea
fish
Freshwater & Marine Ecology
hosts
Lepocreadiidae
Life Sciences
Literature reviews
Lychnorhiza lucerna
Marine
Marine & Freshwater Sciences
Marine biology
metacercariae
Microbiology
Oceanography
Opechona
Original Paper
parasite load
Parasites
parasitism
population dynamics
Scyphomedusae
Seasonal variations
Semaeostomeae
Worms
Zoology
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Zusammenfassung:Monthly and inter-annual variations of prevalence (P) and intensity of infection (I) of Opechona sp. metacercariae were analyzed in the two most common scyphomedusae from south Brazil (~25.5°S, 48.4°W), between November 1997 and December 2004. Chrysaora lactea was highly parasitized (n = 817; P ≈ 41 %; I = 1–35), while Lychnorhiza lucerna hosted few metacercariae (n = 968; P ≈ 3 %; I = 1–3). Prevalence remained around 40 % in all size classes of C. lactea, and I positively correlated with its BD (bell diameter; Pearson, r = 0.34, p 
ISSN:0025-3162
1432-1793
DOI:10.1007/s00227-014-2584-6