Capillariidae gen. sp.

Gonzalez-Solis, David, Soler-Jimenez, Lilia C., Aguirre-Macedo, M. Leopoldina, McLaughlin, John P., Shaw, Jenny C., James, Anna K., Hechinger, Ryan F., Kuris, Armand M., Lafferty, Kevin D. & Vidal-Martinez, Victor M., 2019, Parasitic nematodes of marine fishes from Palmyra Atoll, East Indo-Pacific, including a new species of Spinitectus (Nematoda, Cystidicolidae), ZooKeys 892, pp. 1-26 : 1

Capillariidae gen. sp.

Description.

Gravid female (1 damaged specimen, measurements of 1 young female in parentheses): long, thin and slender nematodes, 9.42 (8.80) mm long and 26 (37) wide. Muscular esophagus - (335). Stichosome formed by 4-6 (5) stichocytes. Eggs with polar plugs, thick-walled, 49-55 × 20-24 (-). Tail very short, 7 (6) long.

Hosts.

Chaetodon lunula , L. fulvus , and E. vaigiensis .

Site of infection.

Stomach.

Prevalence and mean intensity.

14.3 and 2.5 ± 0.7 (n = 14) to C. lunula , 3.8 and 1 (n = 26) to L. fulvus , 5.6 and 1.7 ± 0.6 (n = 54) to E. vaigiensis .

Specimens deposited.

CHCM no. 626 (voucher) (1 vial, 1 specimen ♀) (from Chaetodon lunula ), CHCM no. 627 (voucher) (1 vial, 2 specimens ♂ ♀) (from L. fulvus ).

Remarks.

Specimens were damaged, but it was possible to observe the most important features to allocate them to the family Capillariidae , such as esophagus divided in muscular and glandular parts (stichosome), eggs with polar plugs, and the general shape of body. Since males are unknown, it is impossible to determine their generic or specific identity. This is the first capillariid nematode reported in C. ignobilis and the second for the family Carangidae in the southwestern Pacific Ocean, which was recorded in Carangoides oblongus (Cuvier) ( Carangidae ) off New Caledonia ( Moravec and Justine 2010). Palm and Bray (2014) only recorded Capillaria eggs in the musculature from Bathygobius fuscus ( Rüppell) ( Gobiidae ) in Hawaii.