(Monogenea : Ancyrocephalidae) from Bodianus Perditio
Total Page:16
File Type:pdf, Size:1020Kb
FOLIA PARASITOLOGICA 54: 203–207, 2007 Haliotrema banana sp. n. (Monogenea: Ancyrocephalidae) from Bodianus perditio (Perciformes: Labridae) off New Caledonia L.H.S. Lim1 and Jean-Lou Justine2 1Institute of Biological Sciences, University of Malaya, Kuala Lumpur, 50603, Malaysia; 2Équipe Biogéographie Marine Tropicale, Unité Systématique, Adaptation, Évolution (CNRS, UPMC, MNHN, IRD), Institut de Recherche pour le Développement, BP A5, 98848 Nouméa Cedex, Nouvelle-Calédonie Key words: Monogenea, Ancyrocephalidae, Haliotrema banana, Bodianus perditio, Labridae, New Caledonia Abstract. Sixteen labrid species, including four Bodianus spp., were examined in New Caledonia (South Pacific) and monogene- ans were found only on Bodianus perditio (Quoy et Gaimard). This species, Haliotrema banana sp. n., is the second Haliotrema species to be described from the labrids, the first being Haliotrema bodiani Yamaguti, 1968 from Bodianus albotaeniatus (Valenciennes), previously designated as B. bilunulatus (Lacépède). The new species is similar to H. bodiani in soft reproductive parts but differs from it in the morphologies of the hard haptoral parts, mainly in the shape of the dorsal bar (bar-shaped vs V- shaped in H. bodiani) and ventral bar. It is similar to Haliotrema spirale Yamaguti, 1968 and Haliotrema minutospirale Yama- guti, 1968 in the shape of the anchors and bars but differs from them in the detailed structures of the copulatory organ and vagi- nal system. The family Labridae includes fishes commonly the third ancyrocephalid species described from a labrid known as wrasses and is the second largest family of species. fish after Gobiidae with 68 genera and 453 species (Randall 2005). In New Caledonia alone, 114 species MATERIALS AND METHODS have been recorded (Fricke and Kulbicki 2006). Al- Specimens of the labrids were caught with hand lines on though the Labridae includes many aquarium fish spe- board R/V “Coris” in various places off the barrier reef, cies, records of monogeneans from labrids are rare and Nouméa, New Caledonia at a distance of about 20–30 km thus far only two species of ancyrocephalids belonging from the shore, in depths of 20–40 m. Live fishes were kept in to two genera, two species of capsalids from two genera a container with sea water and immediately brought back to and one species of microcotylid have been recorded. the laboratory. Gills were extracted and examined in sea water The two ancyrocephalids are Haliotrema bodiani Ya- under a dissecting microscope. Live monogeneans were indi- maguti, 1968 from Bodianus albotaeniatus (Valen- vidually picked up from the gills with fine needles and imme- ciennes) (previously designated as B. bilunulatus) off diately processed. Some monogeneans were flattened on a Hawaii and Sinodiplectanotrema argyrosomus Zhang, slide under a coverslip with a light weight on top and fixed in Yang et Liu, 2001 [type host Argyrosomus aureus, now 70% ethanol. These were later stained in carmine as given in known as Pennahia anea (Bloch) (Sciaenidae)] from Justine (2005). A few specimens were prepared with ammo- Halichoeres nigrescens, off the island of Hainan, China. nium picrate glycerine. Some specimens were collected from The two capsalids are Benedenia bodiani Yamaguti, formalin-fixed gills of B. perditio and monogeneans were 1968 from Bodianus albotaeniatus, off Hawaii and fixed and cleared in ammonium picrate glycerine. Some of these ammonium picrate glycerine fixed specimens were Neobenedenia melleni (MacCallum, 1927) from Bo- washed several times in distilled water to remove the fixative dianus rufus (Linnaeus), while the microcotylid, Micro- and then stained in Gomori’s triple stain. The monogeneans cotyle donavini van Beneden et Hesse, 1863 was col- were drawn with a microscope equipped with a camera lucida. lected from Labrus bergylta Ascanius (junior synonym Drawings were scanned and redrawn on a computer with L. donovani Valenciennes) in the Atlantic, off Europe Adobe Illustrator. Some images were taken using a Leica digi- and on Symphodus mediterraneus Linnaeus in the Medi- tal camera using Leica image analysis software (QWin Plus). terranean Sea (see Yamaguti 1968, Radujkovic and Eu- All measurements (see Fig. 1) were taken on flat specimens zet 1989, Whittington and Horton 1996, Treasurer 1997, and given in micrometres as average and range (minimum and Whittington et al. 2001). maximum) given within parentheses. In the present investigation monogeneans belonging The type specimens of H. bodiani USNPC 975-15, from to Haliotrema Johnston et Tiegs, 1922 were collected the United States National Parasite Collection (USNPC), were from goldspot hogfish, Bodianus perditio (Quoy et examined and hard parts illustrated for comparison (Fig. 2), Gaimard). This new species is the second species of but we were not able to observe and hence not able to illus- Haliotrema to be described from a Bodianus species and trate the soft anatomical parts. Address for correspondence: L.H.S. Lim, Institute of Biological Sciences, University of Malaya, Kuala Lumpur, 50603, Malaysia. Phone: ++60 3 7967 4368; Fax: ++60 3 7967 4178/4173; E-mail: [email protected] 203 Type specimens of the present species are deposited in the and vitelline ducts, proceeds anteriorly to form oötype, Muséum National d’Histoire Naturelle, Paris (MNHN), the receiving ducts from surrounding Mehlis’ gland, as- Muzium Zoologi Universiti Malaya, Kuala Lumpur (MZUM) cends medially as uterus to open postero-ventrally to and the Helminthological Collection, Institute of Parasitology, copulatory organ. Dextral vaginal system with promi- Biology Centre, Academy of Sciences of the Czech Republic, nent large muscular elongate flask- or pear-shaped distal České Budějovice (HCIP). end traversing into midportion of body; large pore probably opening into thin-walled small seminal recep- RESULTS tacle, thin sclerotized vaginal duct (observed not at tip Although 16 species of labrids were examined only of flask-shaped vagina) probably leaving seminal recep- Bodianus perditio was found to harbour monogeneans. tacle to oviduct. Vitelline system confluent anterior to The other 15 labrid species included three species of haptor. Bodianus, namely B. axillaris (Bennett), B. busellatus T y p e h o s t : Bodianus perditio (Quoy et Gaimard) (Perci- Gomon, and B. loxozonus (Snyder), as well as Cheilinus formes: Labridae). chlorourus (Bloch), C. trilobatus Lacépède, C. undula- S i t e : Between secondary gill lamellae. tus Rüppell, Choerodon fasciatus (Günther), C. graphi- T y p e l o c a l i t y : Barrier reef off Nouméa, New Caledo- cus (De Vis), Coris aygula Lacépède, Epibulus insidia- nia. tor (Pallas), Oxycheilinus diagrammus (Lacépède), O. T y p e s p e c i m e n s : Holotype, MNHN JNC 1028A1; unifasciatus (Streets), Stethojulis strigiventer (Bennett), MNHN, 18 paratypes (JNC996, JNC1003, JNC1027, Thalassoma lutescens Lay et Bennett) and T. nigrofas- JNC1028, JNC1151, JNC1199); MZUM(P), 3 paratypes ciatum Randall. (nos. 578–580); HCIP, 2 paratypes (M-434). M a t e r i a l s t u d i e d : 22 specimens; 20 specimens Haliotrema banana sp. n. Fig. 1A–H measured. Description. Body elongate, length 635 (463–842) P r e v a l e n c e : 75% (26/35). width 176 (128–211), anterior region with 3 pairs of I n t e n s i t y : Up to about 100 monogeneans per fish. cephalic glands of dactylogyrid-type and 2 pairs of pig- C o m p a r a t i v e m a t e r i a l s t u d i e d : Slide USNPC mented eye-spots. Mouth subterminal ventral; pharynx 975-15, Haliotrema bodiani Yamaguti, 1968; the single oval comparatively small; intestine bifurcates posterior slide contains the holotype, clearly marked, and 15 other to pharynx; caeca rejoin posterior to testis and anterior specimens or fragments (all paratypes). to short peduncle. E t y m o l o g y : The species name is after the local name of Haptor set off from body, almost rectangular; length the fish “perroquet banane”. Name in apposition, inde- 89 (72–120) width 124 (103–149), 14 larval type mar- clinable. ginal hooks, similar size, length 13 (12–14); two pairs Remarks on the host. The goldspot hogfish Bo- of anchors with fenestrated shafts; 2 dorsal anchors with dianus perditio is the second largest labrid in New inner length 60 (55–64); outer length 49 (42–55), long Caledonia (after the giant humphead wrasse, Cheilinus inner root 24 (18–30), outer root 10 (6–13); point 17 undulatus). It is locally known as “perroquet banane” (13–20); 2 ventral anchors with well-developed roots, (to be translated as “banana parrot fish”) probably be- inner length 63 (58–68), outer length 49 (46–54), long cause it superficially resembles the parrot fishes (family inner root 30 (26–37), outer root 10 (8–12), point 17 Scaridae) by its large scales and brilliant colours, and (10–21); 2 connecting bars: straight dorsal bar, 43 (38– because it is often yellow as a banana. The fish is com- 47) wide; U-shaped ventral bar, 43 (38–49) wide. mon and often seen at the Nouméa market where it is Testis single, round, larger than ovary, postero-dorsal sold with the parrot fishes. to and overlapping ovary; vas deferens leaves antero- medial region of testis, passes along dorsal to loop sinis- Differential diagnosis. This new species is different tral caecum to ventral side, ascends in intercaecal region from H. bodiani in the shape of the bars (Figs. 1, 2) and to anterior part of copulatory organ, loops downwards, the extent of the flask-shaped vaginal system (see fig. distends forming seminal vesicle, narrows to enter ini- 42 in Yamaguti 1968). In H. banana, the flask-like va- tial part of copulatory tube. Single elongate pyriform gina extends beyond the midbody almost to the left side prostatic reservoir prominent, prostatic gland ducts of the body traversing the initial part of the elongate drain into the anterior part of prostatic reservoir; copulatory tube, while in H.