四種海虱被發現寄生在十種菲律賓產海水魚生存於海邊養殖池、或輸水溝渠中。他們分別為:寄生在後刺尾鯛、黑帶石斑魚、南洋叉舌鯊、巴馬鯪魚、銀紋笛鯛、銀鱗鯧、裾尾口孵魚、莫三鼻口孵魚、海鱺、和點籃子魚等十種魚體上的傳染魚虱,寄生在銀紋笛鯛和點籃子魚體上的方型魚虱和單節偽魚虱(新種),以及寄生在點籃子魚體上的籃子魚瘡痂魚虱(新種)。此十種魚中,除了莫三鼻口孵魚曾經在台灣被記載為傳染魚虱的寄主之外,其他九種皆為該魚虱的新寄主。籃子魚瘡痂魚虱只見於點籃子魚體上,而單節偽魚虱也主寄生在這種魚體上;但是,方型魚虱則多半寄生在銀紋笛鯛上。傳染魚虱則具有相當低的寄主特異性,被發現於所有受檢海魚。
Four species of sea ice were found parasitic on ten species of marine fishes either cultured in the coastal ponds or occurring in the sea water supply canals in the Philippines. They are: Caligus epidemicus Hewitt, 1971 on Acanthurus mata Cuvier), Epinephelus coioides (Hamilton), Glossogobius celebius (Valenciennes), Liza parmata (Cantor), Lutjanus argentimaculatus (Forsskål), Monodactylus argenteus (Linnaeus), Oreochromis urolepis hornorum (Trewavas), Oreochromis mossambicus (Peters), Rachycentron canadum (Linnaeus), and Siganus guttatus (Bloch); Caligus quadratus Shiino, 1954 on L. argentimaculatus and S. guttatus; Lepeophtheirus sigani n. sp. on S. guttatus; and Pseudocaligus uniartus n. sp. on S. guttatus and L. argentimaculatus. These ten species of fishes are new host to C. epidemicus, except for O. mossambicu which has been reported to carry C. epidemicus from Taiwan. Caligus quadratus is new to the Philippines and the two species of fish harboring it are the new host. While L. sigani was found only on S. guttatus, P. uniartus was recovered mostly from S. guttatus, and C. quadratus, largely from L. argentimaculatus. Caligus epidemicus exhibits extremely low host specificity and was found on all species of fishes examined.