Haliotrema fastigatum Zhukov, 1976

Mendoza-Franco, Edgar F., Tun, Mariela del Carmen Rosado, Anchevida, Allan de Jesus Duarte & Rodriguez, Rodolfo E. del Rio, 2018, Morphological and molecular (28 S rRNA) data of monogeneans (Platyhelminthes) infecting the gill lamellae of marine fishes in the Campeche Bank, southwest Gulf of Mexico, ZooKeys 783, pp. 125-161 : 125

Haliotrema fastigatum Zhukov, 1976

Haliotrema fastigatum Zhukov, 1976: 43, fig. 10; Kritsky and Boeger 2002: 33 (transferred to Euryhaliotrema ); Kritsky 2012: 237-239, figs 11-17 (redescribed).

Type host.

Lutjanus apodus (Walbaum, 1792)

Present study.

L. griseus

Locality/prevalence, mean abundance and intensity range.

San Francisco: 63 fish (mean TL 28.1cm; range 21.6-39) infected of 65 examined (97 %); abundance, 12; intensity of infection, 10-18 worms. Seyba Playa: 40 fish (TL 28.5; 23-37) infected of 45 examined (88.8 %); abundance, 8; intensity of infection, 2-11. Champoton: 27 fish (TL 28.3; 25.2-37) infected of 37 examined (73 %); abundance, 4; intensity of infection, 4-11.

Supplementary observations

(measurements based on ten specimens). Body 356 (300-460; 9) long; greatest width 72 (54-95; 8). Haptor 70 (47-85; 8) wide. Pharynx 16 (13-18; 8) wide. MCO 32 (28-34; 7) long. Proximal ring of the MCO 18 (12-20; 8) diameter. Accessory piece 23 (21-24; 3) long. Ventral anchor 29 (27-30; 10) long; dorsal anchor 41 (38-45; 6) long. Ventral bar 36 (34-40; 7) long; dorsal bar 37 (35-46; 5) long. Hook 12 (11-12; 7) long.

Comments.

Zhukov (1976) originally described this species as Haliotrema fastigatum from L. apodus and Lutjanus jocu (Bloch & Schneider, 1801) from the area Havana (Gulf of Mexico). In 2002, Kritsky and Boeger transferred this species to Euryhaliotrema as E. fastigatum based on details presented in the original description ( Zhukov 1976) of the copulatory complex, internal organs, and haptoral armament according with the diagnosis of Euryhaliotrema . Later, Kritsky (2012) redescribed E. fastigatum based on specimens collected from L. griseus and other lutjanids ( L. apodus , L. jocu , and L. argentiventris ) from Florida and off Taboga Island, Perlas Archipielago, Isla Saboga, and Isla Tabugilla (all from the Pacific of Panama). Euryhaliotrema fastigatum is characterized in having a thinning of the base of the dorsal anchor near its junction with the anchor shaft and by lacking by lacking an articulation process in the copulatory complex. Measurements and the morphology of the sclerotized structures of the present specimens do not differ significantly from that figured in the redescription of E. fastigatum . This monogenean species has also been reported on Lutjanus analis (Cuvier, 1828) and L. griseus from Puerto Rico and off Venezuela (Bosques-Rodriguez 2004, Fuentes Zambrano et al. 2003, Fuentes Zambrano and Silva Rojas 2006, Kritsky 2012).

Specimens deposited.

Ten reference specimens in the CNHE (10621).