Erpocotyle catenulata (Guberlet) Yamaguti, 1963
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publication ID |
https://doi.org/ 10.11646/zootaxa.5254.2.1 |
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publication LSID |
lsid:zoobank.org:pub:3B5279F6-8157-4DB1-BFE5-8391D7330D53 |
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DOI |
https://doi.org/10.5281/zenodo.7730041 |
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persistent identifier |
https://treatment.plazi.org/id/03C5D722-FF8C-0100-FF2C-FAFB5196D24C |
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treatment provided by |
Plazi |
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scientific name |
Erpocotyle catenulata (Guberlet) Yamaguti |
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Erpocotyle catenulata (Guberlet) Yamaguti View in CoL
Synonyms: Squalonchocotyle catenulata Guberlet View in CoL ; Neoerpocotyle catenulata (Guberlet) Price View in CoL
Description ( Figs. 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 ; Tables 1 View TABLE 1 , 2 View TABLE 2 )
[Based on two specimens] Body elongate ( Fig. 1A View FIGURE 1 ), body-proper 8088 (8035; 8142) long, 2313 (2121; 2504) maximum width. Oral sucker 595 (566; 624) long, 771 (757; 784) wide, with papillate posterior ventral inner portion ( Fig. 1A View FIGURE 1 ); papillae not easily observed. Pharynx muscular, ovoid, 105 (104; 106) long, 123 (116; 130) wide, leading immediately to intestinal caecal bifurcation ( Fig. 1A View FIGURE 1 ). Caecal branches initially narrow, posterolaterally directed post-bifurcation, expanding abruptly at anterior region of vitellarium, extending posteriorly ( Fig. 1A View FIGURE 1 ). Numerous large laterally directed diverticula present along length of caecal branches for length of body-proper; fewer, shorter medially directed diverticula present for length of testicular field ( Fig. 1A View FIGURE 1 ). Caecum confluent posteriorly as it exits body-proper, enters haptor, bifurcating at mid-point of haptor ( Fig. 1A View FIGURE 1 ), non-diverticular branch extending along haptoral median to between sucker sclerite complex pair 1, diverticular branch extending along length of appendix up to position of hamuli ( Fig. 1A View FIGURE 1 ). Haptor large, symmetrical ( Fig. 1A View FIGURE 1 ) 3627 (3213; 4042) long, 3510 (3297; 3724) wide excluding appendix.Appendix marginal ( Fig. 1A View FIGURE 1 ), 2971 (2647; 3095) long, 897 (855; 939) wide, terminating in pair of suckers 479 (434; 525) long, 328 (318; 337) wide. Three pairs of sucker-complex sclerites of approximately the same size positioned bilateral-symmetrically within haptor; pair of sucker complex 3 slightly smaller in total length than 1 and 2 ( Fig. 1B View FIGURE 1 ). Detailed measurements of sucker sclerites of complex 1, 2 and 3 and hamuli are given in Table 1 View TABLE 1 ; sucker sclerite circumference length measured along curve. Hamuli ( Fig. 1C View FIGURE 1 ), positioned medially within appendix between appendix suckers, immediately after termination of caecum ( Fig. 1A View FIGURE 1 ). Testes 63 (62; 64) in number, occupying intercaecal space posterior to ovary; each testis irregular to ovoid in shape ( Fig. 1A View FIGURE 1 ), 87 (82; 93) in diameter. Proximal part of vas deferens located in anterior half of body-proper, receiving two vasa efferentia. Vas deferens sinuous, wider and more convoluted for its first half, extending anteriorly just right of body mid-line, then narrowing and following roughly along body mid-line to base of unarmed male copulatory organ ( Figs. 1A View FIGURE 1 , 2 View FIGURE 2 ). Male copulatory organ, total length 384 (358; 410), 81 (74; 88) wide at widest point, separated into two distinct parts: proximal prostatic region with many prostatic cells ( Fig. 2 View FIGURE 2 ), initially internally bilobed proximally, narrowing anteriorly to simple tube communicating directly with thick-walled, inflated unarmed distal region of true cirrus 287 (256; 317) long ( Fig. 2 View FIGURE 2 ). Common genital pore immediately ventral to distal part of cirrus. Unarmed vaginal pores ventral, lateral to posterolateral of common genital pore ( Fig. 1A View FIGURE 1 ). Vaginae parallel, individual posterior pathways obscured by vitelline field, join separately and form bilateral commissure with transverse vitelline duct in body mid-region ( Figs. 1A View FIGURE 1 , 3 View FIGURE 3 ). Ovary conspicuous, 2314 (2259; 2368) long; anterior portion with short branches, left of body mid-line; straight descending branch initially left of body mid-line, crossing mid-line at single posterior bend before turning anteriorly, narrowing to simple oviduct ( Figs. 1A View FIGURE 1 , 3 View FIGURE 3 ). Proximal part of oviduct connects with short duct originating from large allantoid seminal receptacle 689 (516; 861) long, 237 (182; 292) wide ( Figs. 1A View FIGURE 1 , 3 View FIGURE 3 ). Seminal receptacle positioned obliquely medial, anterior of posterior bend of ovary ( Figs. 1A View FIGURE 1 , 3 View FIGURE 3 ). Common vitelline duct extends posteriorly, medially and then left, forming commissure with gastrointestinal canal on left, ovovitelline duct on right ( Fig. 3 View FIGURE 3 ). Ovovitelline duct enters base of ô type containing Mehlis’ glands ( Figs. 1A View FIGURE 1 , 3 View FIGURE 3 ). Ô type tubular, dorsal to vitelline ducts, 772 (731; 813) long, 88 (88; 89) wide at widest point, extends anteriorly beyond transverse vitelline duct before making abrupt fold posteriorly, forming long convoluted distal part of oviduct looping back on itself twice anteriorly before giving rise to uterus, immediately anterior to ô type ( Figs. 1A View FIGURE 1 , 3 View FIGURE 3 ). Uterus ventral to vas deferens, 4316 (4223; 4409) long, straight, containing chain-linked eggs in one specimen (not illustrated), eggs in utero ovoid, 165 long, 67 wide, excluding connected polar filaments. Vitelline field extends from area posterior to vaginal pores, overlapping length of intestinal caecum through body-proper and into haptor and haptoral appendix ( Fig. 1A View FIGURE 1 ).
Type-host: Mustelus laevis (Linnaeus) , now Mustelus mustelus (Linnaeus) , Triakidae .
Additional host: Galeorhinus galeus (Linnaeus) , Triakidae .
Type-locality: “Vicinity of Naples”, Italy ( Guberlet 1933).
Additional localities: West coast of South Africa (host = M. mustelus ), De Mond, South Coast of South Africa, S34º42’39.83”; E20º06’`7.37” (host = Ga. galeus ) [present study]; Norway; Sète, France; Portugal; Tunisia ( Brinkmann 1952; Euzet 1955; Tendeiro and Valdez 1955; Lambert and Maillard 1979).
Location on host: Gill lamellae.
Specimens: SAMA AHC 36931 (ex M. mustelus ); 36932 (ex Ga. galeus ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Erpocotyle catenulata (Guberlet) Yamaguti
| Vaughan, David B., Christison, Kevin W., Hansen, Haakon & Bullard, Stephen A. 2023 |
Neoerpocotyle catenulata (Guberlet)
| Price 1942 |
Squalonchocotyle catenulata Guberlet
| sensu Guberlet 1933 |