Whittingtonocotyle jeju, Santos Neto, João F., Rodrigues, Allan R. O. & Domingues, Marcus V., 2015

Santos Neto, João F., Rodrigues, Allan R. O. & Domingues, Marcus V., 2015, Proposal of Whittingtonocotyle n. gen. (Dactylogyroidea: Dactylogyridae), with the description of two new species from the gills of Hoplerythrinus unitaeniatus (Characiformes: Erythrinidae) in Brazil, Zootaxa 3937 (1), pp. 191-200 : 196

publication ID

https://doi.org/ 10.11646/zootaxa.3937.1.10

publication LSID

lsid:zoobank.org:pub:3A40431C-B6C4-41D1-8E72-55D3D4ED4EE6

DOI

https://doi.org/10.5281/zenodo.5619652

persistent identifier

https://treatment.plazi.org/id/9A0987F7-0D07-9316-FF28-FF66FD6CFA2D

treatment provided by

Plazi

scientific name

Whittingtonocotyle jeju
status

sp. nov.

Whittingtonocotyle jeju n. sp.

( Figs. 10–18 View FIGURES 10 – 18 )

Type host. Hoplerythrinus unitaeniatus .

Site. Gills

Type locality. Guamá River, municipality of Irituia, Pará State, Brazil (01°51’59.8” S, 47°24’17.2”W) collected in July 2014.

Other records. Caeté River, municipality of Augusto Corrêa, Pará State, Brazil (1°3’58.21” S 46°40’3.65”W) collected in October 2013.

Prevalence. 66% of 3 hosts examined.

Mean intensity. 9 parasites per infected host.

Specimens deposited. Holotype, CHIOC 38014a; 6 paratypes, CHIOC 38014b–e, INPA 659, MPEG 00042; 7 vouchers, CHIOC 38015a–d, INPA 660, MPEG 00043.

Etymology. The specific name is derived from the local name of the host.

Comparative measurements. Table 2 View TABLE 2 .

Description (based on 7 specimens; 5 mounted in Gomori’s trichrome, 2 mounted in Hoyer’ medium): Body fusiform. Cephalic margin tapered; cephalic lobes inconspicuous; 4–5 pairs of head organs with rod-shaped secretion; cephalic glands lateral or postero-lateral to pharynx. Eyes 4, posterior pair larger and slightly farther apart than anterior pair; accessory granules absent in the cephalic area. Pharynx muscular, ovate. Male copulatory organ, with approximately 19 rings, base with sclerotized cap ( Fig. 11 View FIGURES 10 – 18 ). Accessory piece, a variable sheath, enclosing some distal rings of MCO. Testis subspherical, vas deferens conspicuous; seminal vesicle sigmoid; prostatic reservoir large, bacilliform separated into three zones with two terminal areas densely stained. Germarium subovate; oviduct, ootype, Mehlis’ glands, uterus not observed. Vagina comprising vaginal vestibule with soft tissue, vaginal canal heavily sclerotized, sigmoid. Seminal receptacle pyriform. Peduncle short; pair of haptor glands starting at level of peduncle, convolute at distal portion, ending at level of the anchor/bar complexes ( Fig. 10 View FIGURES 10 – 18 ). Haptor subtrapezoidal. Anchors similar, with broad base, poorly developed roots, short shaft. Ventral anchor ( Fig. 16 View FIGURES 10 – 18 ) with superficial root depressed covered by sclerotized cap; deep root short covered by sclerotized cap on outer proximal portion; evenly curved shaft, point. Dorsal anchor ( Fig. 15 View FIGURES 10 – 18 ) with superficial root broad covered by sclerotized cap; deep root short covered by sclerotized cap; evenly curved shaft, point. Ventral bar ( Fig. 17 View FIGURES 10 – 18 ), curved with tapered ends. Dorsal bar ( Fig. 18 View FIGURES 10 – 18 ), straight, with short anteromedial process, 1/3 dorsal bar length. Hooks similar ( Figs. 13–14 View FIGURES 10 – 18 ); each with delicate point and shaft, slightly erect thumb, elongate straight shank, short point; FH loop not observed; hook pair 1 smaller than hook pairs 2–7.

Remarks. This species differs from Whittingtonocotyle caetei n. sp. by the morphology of the anchors, and by possessing a male copulatory organ comprising a coil of about 19 rings (29 rings in W. caetei n. sp.), a prostatic reservoir separated into three zones with two terminal areas densely stained (two zones with one terminal areas densely stained in W. caetei n. sp.), vaginal canal sigmoid (coiled in W. caetei n. sp.), and a dorsal bar with short anteromedial process (elongate in W. caetei n. sp.).

CHIOC

Helminthological Collection of Oswaldo Cruz Institute (Coleccion. Helmintologica del Instituto Oswaldo Cruz)

INPA

Instituto Nacional de Pesquisas da Amazonia

MPEG

Museu Paraense Emilio Goeldi

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF