| Sumario: |
Information regarding parasitic fauna of cetaceans from Costa Rica is provided for the first
time. A total of 25 stranded dolphins and whales were examined between 2001 and 2009,
including striped dolphin (Stenella coeruleoalba) (n = 19), pantropical spotted dolphin (S.
attenuata) (n = 2), spinner dolphin (S. longirostris) (n = 1), bottlenose dolphin (Tursiops truncatus) (n = 1), dwarf sperm whale (Kogia sima) (n = 1) and Cuvier’s beaked whale (Ziphius
cavirostris) (n = 1). Pathological findings associated with the parasites are also presented.
In the most representative dolphin species, S. coeruleoalba, the prevalence of parasites
was 89.5%; moreover, all examined specimens of S. attenuata, S. longirostris, T. truncatus
and Z. cavirostris presented parasites. No parasites were recovered from K. sima. Fourteen
helminth taxa were identified, including six species of cestodes (Strobilocephalus triangularis, Tetrabothrius forsteri, Trigonocotyle sp., Phyllobothrium delphini, Monorygma grimaldi,
Tetraphyllidea gen. sp. plerocercoid), four digeneans (Nasitrema globicephalae, Brachycladium palliatum, B. pacificum and Oschmarinella albamarina) and four nematodes (Anisakis
spp., Halocercus lagenorhynchi, Halocercus sp. and Crassicauda anthonyi). A commensal crustacean, Xenobalanus globicipitis, was also identified. All identified parasites representing
new geographic records for the Pacific coast of Central America and new host records are
presented. Parasitological information is valuable for conservation of cetaceans in Pacific
coast of Costa Rica.
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