Gorgorhynchus fistularius Chen, Yang, Wu, Yu & Li, 2026, sp. nov.
Authors/Creators
- 1. Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, 050024 Shijiazhuang, Hebei Province, China & Hebei Collaborative Innovation Center for Eco-Environment, 050024 Shijiazhuang, Hebei Province, China & Ecological Postdoctoral Research Mobile Station, Hebei Normal University, 050024 Shijiazhuang, Hebei Province, China
- 2. Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, 050024 Shijiazhuang, Hebei Province, China
- 3. Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, 050024 Shijiazhuang, Hebei Province, China & Hebei Collaborative Innovation Center for Eco-Environment, 050024 Shijiazhuang, Hebei Province, China
Description
Gorgorhynchus fistularius sp. nov.
Figs 1, 2, 3, Table 3
Type-host.
Red cornetfish Fistularia petimba (Lacépède, 1803) (Gasterosteiformes, Fistulariidae).
Type-locality.
South China Sea (off Sanya, Hainan Island, China).
Site in host.
Intestine.
Type specimens.
Holotype, male (HBNU-A-F 20241217-1 CL); paratypes: 4 males, 4 females (HBNU-A-F 20241217-2 CL); deposited in the College of Life Sciences, Hebei Normal University, Hebei Province, China.
Etymology.
The species name refers to the generic name of the type host.
Description.
General. Trunk long and slender, nearly cylindrical; armed with single field of about 13–20 irregular and incomplete circles of small spines anteriorly; tightly packed circles of spines, spines distinctly becoming sparser and larger towards posteriorly (Figs 1 A, 2 A, 3 A). Proboscis clavate, armed with 20‒22 spiral longitudinal rows of 10‒12 hooks each (Figs 1 A ‒ C, 2 A, C, E, 3 A, B); first 2–6 hooks of each from anteriorly with simple roots, hooks 1 usually small, hooks 2 and 3 largest, hooks 7–12 without roots, hooks 4–12 gradually decreasing in size; without dorso-ventral differentiation of hook and root sizes. Neck well developed, more or less cylindrical (Figs 1 A, 2 A, 3 A). Proboscis receptacle double-walled, cerebral ganglion at base of proboscis receptacle (Figs 1 A, 3 A). Lemnisci very long, unequal, tubular, distinctly longer than proboscis receptacle (Figs 1 A, 3 A).
Male [Based on 5 mature specimens]. Trunk 46.0–65.5 (53.1) mm long, maximum width 570–800 (664). Proboscis 550–750 (646) long, 280–410 (346) wide. Proboscis hooks similar in shape, 38–52 (46), 58–70 (65), 63–73 (67), 61–72 (66), 60–69 (64), 57–63 (61), 55–61 (58), 48–57 (54), 46–55 (51), 33–48 (43), 29–45 (37) in length from anteriorly to posteriorly. Neck 300–350 (336) long, 290–390 (324) wide. Proboscis receptacle 1.50–1.92 (1.61) mm long, 250–370 (296) wide. Shorter lemniscus 3.90–5.20 (4.64) mm long, 70–150 (106) wide; longer lemniscus 4.70–5.80 (5.31) mm long, 110–130 (118) wide. Testes two, oval, nearly equal in size (Figs 1 E, 3 F); anterior testis 1.20–1.50 (1.32) mm long, 420–500 (458) wide; posterior testis 1.27–1.60 (1.38) mm long, 450–600 (510) wide. Cement glands four, very long, tubular, clustered together (Figs 1 E, 3 F); a short distance from posterior testis, shorter cement glands 5.98–16.6 (10.3) mm long, 122–195 (159) wide; longer cement glands 12.0–22.0 (16.0) mm long, 146–220 (177) wide. Saefftigen’s pouch rod-shaped, 1.20–1.80 (1.43) mm long, 450–640 (505) wide (Figs 1 E, 3 D, 3 F). Copulatory bursa not everted. Gonopore nearly terminal.
Female [Based on 4 mature specimens]. Trunk 55.3–110.5 (83.3) mm long, maximum width 650–1080 (913). Proboscis 650–800 (733) long, 370–480 (445) wide. Proboscis hooks similar in shape, 45–69 (63), 61–79 (70), 68–85 (75), 66–82 (74), 65–79 (72), 62–77 (71), 60–76 (68), 58–75 (68), 51–72 (65), 42–69 (60), 40–65 (57) in length from anteriorly to posteriorly. Neck 380–500 (428) long, 330–450 (368) wide. Proboscis receptacle 1.63–1.95 (1.82) mm long, 310–430 (378) wide. Shorter lemniscus 4.76–7.93 (6.27) mm long, 80–171 (130) wide; longer lemniscus 4.88–8.29 (6.86) mm long, 70–220 (146) wide. Uterine bell 570–900 (743) long, 170–300 (220) wide; uterus 500–620 (568) long, vagina 260–700 (428) long (Figs 1 F, 3 C). Eggs ellipsoid, 40–93 (63) × 20–50 (32) in size (n = 20) (Figs 1 H, 2 F, 3 E). Gonopore subterminal.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Material sample ID
- HBNU-A-F 20241217-1 , HBNU-A-F 20241217-2
- Scientific name authorship
- Chen & Yang & Wu & Yu & Li
- Kingdom
- Animalia
- Phylum
- Acanthocephala
- Order
- Echinorhynchida
- Family
- Rhadinorhynchidae
- Genus
- Gorgorhynchus
- Species
- fistularius
- Taxon rank
- species
- Taxonomic status
- sp. nov.
- Type status
- holotype , paratype
- Taxonomic concept label
- Gorgorhynchus fistularius Chen, Yang, Wu, Yu & Li, 2026
References
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- Van Cleave HJ (1940) The Acanthocephala collected by the Allan Hancock Pacific Expedition, 1934. Allan Hancock Pacific Expeditions 2 (15): 501–527. https://doi.org/10.25549/hancock-c82-14657
- Chandler AC (1934) A revision of the genus Rhadinorhynchus (Acanthocephala) with description of new genera and species. Parasitology 26 (3): 352–358. https://doi.org/10.1017/S0031182000023672
- Parukhin AM (1973) Gorgorhynchus nemipteri sp. n., a new species of Acanthocephala from fishes in the Indian Ocean. Parazitologiia 7 (1): 72–74. [in Russian]
- Smales LR, Barton DP, Chisholm LA (2019) Acanthocephalans from Australian elasmobranchs (Chondrichthyes) with a description of a new species in the genus Gorgorhynchus Chandler, 1934 (Rhadinorhynchidae). Systematic Parasitology 96 (7): 565–573. https://doi.org/10.1007/s11230-019-09871-x
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