Contracaecum spiculigerum

have host

• Global Biotic Interactions: Pelecanus erythrorhynchos Gmelin & JF 1789 (American White Pelican)
• Global Biotic Interactions: Mergus merganser americanus Cassin 1852
• Global Biotic Interactions: Phalacrocorax auritus (Lesson & R 1831) (Double-crested Cormorant)
• Global Biotic Interactions: Phalacrocorax auritus (Lesson & R 1831) (Double-crested Cormorant)
• Global Biotic Interactions: Phalacrocorax brasilianus (Gmelin & JF 1789) (neotropic cormorant)

parasitize

• Global Biotic Interactions: Micropogonias megalops (Gilbert 1890) (Bigeye croaker)
• Global Biotic Interactions: Esox reichertii Dybowski 1869 (Amur pike)
• Global Biotic Interactions: Eudyptula minor (Forster & JR 1781) (Blue Penguin)
• Global Biotic Interactions: Phalacrocorax varius (Gmelin & JF 1789) (Australian Pied Cormorant)
• Global Biotic Interactions: Mugil liza Valenciennes 1836 (Blueback Mullet)