Neolebouria capoori, Jaiswal, Neeshma, Upadhyay, S. K., Malhotra, Anshu, Blend, Charles K., Dronen, Norman O. & Malhotra, Sandeep K., 2014

Jaiswal, Neeshma, Upadhyay, S. K., Malhotra, Anshu, Blend, Charles K., Dronen, Norman O. & Malhotra, Sandeep K., 2014, A new species of Neolebouria Gibson, 1976 (Opecoelidae: Plagioporinae) from the whitecheek monocle bream, Scolopsis vosmeri (Perciformes: Nemipteridae), from the Panjim coast at Goa, with a checklist of parasites previously reported from this fish, Zootaxa 3802 (1), pp. 98-108 : 101-103

Neolebouria capoori n. sp.

( Figs. 1–4 )

Type-host: Whitecheek monocle bream, Scolopsis vosmeri (Bloch) ( Perciformes : Nemipteridae ).

Type-locality: Arabian Sea, Central West coast of India, 20 km off from coast at Goa

(15°19’09.56” N, 73°38’09.77”E).

Site of infection: Intestine.

Mean intensity: 5.0.

Prevalence: 13 of 64 (20%) fish examined.

Specimens deposited: Holotype ZSI/NRC/iv/961; Paratypes (2) NHMUK 2014.2.20.1-2; Voucher specimens (16) NHMUK 2014.2.20.3-4.

Etymology: The species is named in honor of Professor Vireshwar Nath Capoor, Parasitology Laboratory, Department of Zoology, Allahabad Central University upon his retirement and for his many contributions to our knowledge of helminth parasites.

Description ( Table 2 ): Based on 20 adult specimens. With characteristics of genus. Body aspinose, lanceolate, widest near middle and anterior third of body, holotype 2,016 (mean 2,120, range 1,920–2,520) by 500 (587, 500–664). Forebody nearly half the body length, 881 (843, 672–960) long, representing 44% (39%, 35–44%) of body length. Oral sucker subterminal, spherical, 144 (149, 128–168) by 162 (187, 162–232); prepharynx, 20 (13, 0–34) long; pharynx subspherical, 76 (87, 76–104) by 97 (118, 97–144); ratio of pharynx width to oral sucker width 1:1.7 (1:1.6, 1:1.4–1:1.7); esophagus longer than prepharynx, 158 (193, 96–328); esophagus bifurcating near midlevel of forebody; intestinal caeca long, extending to near posterior end of body, averaging 35 (64, 35–80) wide; uroproct absent. Ventral sucker spherical to subspherical, median, larger than oral sucker, 270 (286, 248–312) by 288 (294, 280–320); ratio of oral sucker width to ventral sucker width 1:1.8 (1:1.8, 1:1.7–1:2.0).

Testes subglobular, irregular, oblique, contiguous in posterior half of hindbody; anterior testis 206 (326, 206–496) by 315 (274, 208–320); posterior testis 265 (351, 265–448) by 309 (276, 208–408). Posttesticular space 296 (382, 296–536) long, representing 16% (17%, 15–21%) of body length. Cirrus sac claviform, overlapping anterior half of ventral sucker dorsally, 321 (346, 160–448), representing 16% (15%, 9–18%) of body length by 81 (76, 56–88); enclosing short unarmed cirrus, relatively few prostate cells encircling indistinct male duct, and simple internal seminal vesicle, 113 (157, 113–180) by 65 (59, 52–65). External seminal vesicle absent. Genital pore submedian, located just medial to left cecum about midway between esophageal bifurcation and anterior margin of ventral sucker, opening into distinct genital atrium.

Ovary distinctly lobed, nearly opposite to anterior testis, often overlapping it, 150 (189, 144–336) by 220 (198, 134–296). Ratio of ovary width to mean testicular width 1:1.4 (1:1.5, 1:1.1–1:1.8). Canalicular seminal receptacle, elongate, medio-dorsal to ovary; Laurer’s canal proceeding anteriorly from seminal receptacle, opening not observed. Uterus extending anteriorly from ovary, winding between gonads and ventral sucker, proceeding anteriorly adjacent to sinistral margin of ventral sucker, then proceeding anterior along cirrus sac to genital pore. Metraterm moderately differentiated, entering genital atrium posterior to male duct. Vitellarium follicular, follicles small, somewhat irregular, in two fields, 10–25 (30, 10–56) by 7–27 (22, 7–36); vitelline fields extending from posterior end of body anteriorly to level of esophageal bifurcation in forebody, confluent in posttesticular region, nearly confluent between esophageal bifurcation and ventral sucker in some specimens. Transverse vitelline collecting ducts arising from vitelline follicles on each side near level of anterior end of posterior third of body, opening into a transversely elongated, voluminous vitelline reservoir situated anterosinistral to ovary. Eggs relatively few, operculate without filaments but bearing boss at anopercular end, 70–80 (75, 68–84) by 45–50 (47, 40–56); abnormally developed eggs occasionally observed throughout uterus; abnormally small eggs 47 (47, 42–57) long; two abnormally large eggs measured 92 and 101 long, respectively.

Excretory pore terminal; excretory vesicle I-shaped, passing anteriorly between testes, extending to level of ovary.

TABLE 1. Parasites reported from the whitecheek monocle bream, Scolopsis vosmeri (Bloch, 1792) ( Perciformes : Nemipteridae )1.

Nematoda

Anisakidae

Anisakis sp. larvae Body cavity, GI tract Markets in Tan-shui, northern Chao (1985) Taiwan

Copepoda

Caligidae

Caligus epinepheli Yamaguti, Gill filaments Taiwan; Makung Fishing Port, Ho et al. (2000); Ho & Lin 1936 Penghu County, Taiwan (2003)

1 Froese & Pauly (2013) recognized twelve synonyms of S. vosmeri , which were included in this literature search: Anthias japonicus Bloch ; A. vosmeri Bloch ; Pomacentrus enneodactylus Lacepède ; Scolopsides collaris Günther ; S. kate Cuvier ; S. pomotis Richardson ; S. rupellii Cuvier ; S. torquatus Cuvier ; Scolopsis argyrosomus Kuhl & Van Hasselt ; S. kurite Rüppell ; S. torquata (Cuvier) ; and S. vosmaeri [sic] (Bloch).

2 Cao et al. (1990) originally erected this sp. as Pseudomonorcheides xiamenensis Cao, Tang & Tang, 1990 ; however, Madhavi (2008, p. 160) considered Pseudomonorcheides Wang, 1982 a junior synonym of Allobacciger Hafeezullah & Siddiqi, 1970 . It is also important to note that A. xiamenensis was originally published in an abstract within the proceedings of the 7th International Congress of Parasitology (ICOPA VII) and, based on Article 9.9 of the ICZN, as such is a nomen nudum.

3 Ahmad (1984) originally published this sp. as Retractomonorchis overstreeti Ahmad 1984 ; however, Madhavi (2008, p. 174) considered Retractomonorchis Madhavi, 1977 a junior synonym of Opisthomonorcheides Parukhin, 1966 .

Figures

FIGURES 1 – 4. Neolebouria capoori n. sp. from the whitecheek monocle bream, Scolopsis vosmeri (Bloch) (Perciformes: Nemipteridae). 1. Ventral view of fully mature adult. 2. Composite drawing of cirrus sac and seminal vesicle with the distal end of uterus and metraterm showing the location of the genital pore, ventral view. 3. Egg showing the boss. 4. Composite drawing of the female genital complex, ventral view. Abbreviations: AT, anterior testis; B, boss; C, cecum; E, excretory vesicle; ES, esophagus; GP, genital pore; L, Laurer’s canal; O, oötype; OD, oviduct; OS, oral sucker; OV, ovary; P, pharynx; PT, posterior testis; S, seminal receptacle; SV, seminal vesicle; U, uterus; VF, vitelline follicle; VS, ventral sucker.