Neonchocotyle violantei n. sp. (Monogenea, Hexabothriidae) from Pseudobatos lentiginosus (Rhinopristiformes, Rhinobatidae) of Yucatán, Gulf of Mexico

Neonchocotyle violantei n. sp. (Monogenea: Hexabothriidae) infects the gill of the Atlantic guitarfish, Pseudobatos lentiginosus (Rhinopristiformes, Rhinobatidae) from littoral waters of Celestún, Yucatán, Mexico. It is assigned to Neonchocotyle because it has, among other features, an asymmetrical haptor, a seminal receptacle, a smooth oötype, and an egg with two elongate filaments. It differs from Neonchocotyle pastinacae, the only congener, by having a small body (821 long by 315 wide, length to width = 2.6:1), two pairs of microhooks between the haptoral appendix suckers, extracaecal (submarginal) vaginal pores, and 5-9 testes. This is the first record of a species of Neonchocotyle in the Gulf of Mexico, the first monogenean reported from P. lentiginosus in Mexico and the second species of Hexabothriidae reported from Mexico.

Keywords:
Neonchocotyle sp. n.; Pseudobatos lentiginosus; helminth; key

Authorship

Guadalupe Quiterio-Rendon

Laboratorio de Morfología Animal, Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Hidalgo, Pachuca, Hidalgo, MéxicoUniversidad Autónoma del Estado de HidalgoMéxicoPachuca, Hidalgo, MéxicoLaboratorio de Morfología Animal, Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Hidalgo, Pachuca, Hidalgo, México

Scott Monks

Research Fellow, Harold W. Manter Laboratory of Parasitology, University of Nebraska-Lincoln, Lincoln, Nebraska, United StatesUniversity of Nebraska-LincolnUnited StatesLincoln, Nebraska, United StatesResearch Fellow, Harold W. Manter Laboratory of Parasitology, University of Nebraska-Lincoln, Lincoln, Nebraska, United States

Griselda Pulido-Flores ^**Corresponding author: Griselda Pulido-Flores. Laboratorio de Morfología Animal, Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Hidalgo, Apartado Postal 1-10, C.P. 42001 Pachuca, Hidalgo, México. e-mail: gpflores6@hotmail.com

*Corresponding author: Griselda Pulido-Flores. Laboratorio de Morfología Animal, Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Hidalgo, Apartado Postal 1-10, C.P. 42001 Pachuca, Hidalgo, México. e-mail: gpflores6@hotmail.com

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (6)

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Figure 1
Neonchocotyle violantei n. sp. (A) holotype, ventral view; (B) detail of the sclerites of the haptoral sucker. Small numbers identify respective sclerites; sclerites pares are indicated by numbers 1 to 3, and 1’ (1-prime) to 3’ (3-prime) (see BOEGER & KRITSKY, 1989Boeger WA, Kritsky DC. Phylogeny, coevolution, and revision of the Hexabothriidae Price, 1942 (Monogenea). Int J Parasitol 1989; 19(4): 425-440. http://dx.doi.org/10.1016/0020-7519(89)90099-4.
http://dx.doi.org/10.1016/0020-7519(89)9... ). Scale bars: A, B = 75 μm. Abbreviations: ag, anterior glands; ah, dorsal haptoral appendix; am, anterior microhook; c, ceca; ep, excretor pore; gv, glandular portion of vagina; h, haptor; mco, male copulatory organ; mv, muscular portion of vagina; o, ovary; oo, oötype; os, oral sucker; pm, posterior microhook; scl, sclerite; sr, seminal receptacle; t, testis; vp, vaginal pore; e, egg; vr, viteline reservoir.

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Figure 4
Neonchocotyle violantei n. sp. Haptoral appendix. Abbreviations: am, anterior microhook; pm, posterior microhook. Scale bars: 40 µm.

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Figure 3
Neonchocotyle violantei n. sp. (A) Sucker-sclerite complex 3, specimen number YUC-99-038-01-1; (B) Papillae rings on sucker-sclerite complex 3. Scale bars: A = 20 μm, B = 104 µm.

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Figure 5
(A) Neonchocotyle pastinacae, ventral view of haptor (modified from KTARI & MAILLARD, 1972Ktari MH, Maillard C. Neonchocotyle pastinacae n.g.- n.sp. (Monogenea-Hexabothriidae) parasite de Dasyatis pastinaca dans le golfe de Tunis: description de ' l’adulte et de la larve. Ann Parasitol Hum Comp 1972; 47(2): 181-191. http://dx.doi.org/10.1051/parasite/1972472181.
http://dx.doi.org/10.1051/parasite/19724... ); (B) Neonchocotyle violantei n. sp., ventral view of haptor; (C) Callorhynchocotyle marplatensis, ventral view of haptor (redrawn from VAUGHAN & CHRISTISON, 2012Vaughan D, Christison K. Towards addressing the current state of confusion within the Hexabothriidae Price, 1942 (1908): Callorhynchocotyle Suriano & Incorvaia, 1982 (Monogenea: Hexabothriidae) re-visited, with the preliminary evaluation of novel parameters for measuring haptoral armature of hexabothriids. Zootaxa [online] 2012; 3229: 1-34 [cited 2004 Jan 19]. Available from: http://www.mapress.com/zootaxa/2012/f/z03229p034f.pdf
http://www.mapress.com/zootaxa/2012/f/z0... ). Small numbers identify respective sucker-sclerite complexes; complex pares are indicated by numbers 1 to 3, and 1’ (1-prime) to 3’ (3-prime) (see BOEGER & KRITSKY, 1989Boeger WA, Kritsky DC. Phylogeny, coevolution, and revision of the Hexabothriidae Price, 1942 (Monogenea). Int J Parasitol 1989; 19(4): 425-440. http://dx.doi.org/10.1016/0020-7519(89)90099-4.
http://dx.doi.org/10.1016/0020-7519(89)9... ). Haptors not drawn to scale.

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Figure 2
Neonchocotyle violantei n. sp.; detail of the reproductive organs. Scale bar = 75 μm. Abbreviations: dmco, distal portion of the male copulatory organ; gch, genital canal; gp, genital pore; gv, glandular region of the vagina; mv, muscular region of the vagina; o, ovary; oo, oötype; pmco, pouch of male copulatory organ; pp, pars prostactica; pxmco, proximal portion of the male copulatory organ; sde, sclerotized distal end; sr, seminal receptacle; sv, seminal vesicle; vp, vaginal pore; vr, viteline reservoir.

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Figure 6
(A) Neonchocotyle pastinacae; position of the vaginal pores, ventral view (redrawn from KTARI & MAILLARD, 1972Ktari MH, Maillard C. Neonchocotyle pastinacae n.g.- n.sp. (Monogenea-Hexabothriidae) parasite de Dasyatis pastinaca dans le golfe de Tunis: description de ' l’adulte et de la larve. Ann Parasitol Hum Comp 1972; 47(2): 181-191. http://dx.doi.org/10.1051/parasite/1972472181.
http://dx.doi.org/10.1051/parasite/19724... ); (B) Neonchocotyle violantei n. sp., position of the vaginal pores, ventral view (holotype). Abbreviations: vp, vaginal pore. Scale bars: A = 200 µm, B = 75 µm.

Figure 1 Neonchocotyle violantei n. sp. (A) holotype, ventral view; (B) detail of the sclerites of the haptoral sucker. Small numbers identify respective sclerites; sclerites pares are indicated by numbers 1 to 3, and 1’ (1-prime) to 3’ (3-prime) (see BOEGER & KRITSKY, 1989Boeger WA, Kritsky DC. Phylogeny, coevolution, and revision of the Hexabothriidae Price, 1942 (Monogenea). Int J Parasitol 1989; 19(4): 425-440. http://dx.doi.org/10.1016/0020-7519(89)90099-4.
http://dx.doi.org/10.1016/0020-7519(89)9... ). Scale bars: A, B = 75 μm. Abbreviations: ag, anterior glands; ah, dorsal haptoral appendix; am, anterior microhook; c, ceca; ep, excretor pore; gv, glandular portion of vagina; h, haptor; mco, male copulatory organ; mv, muscular portion of vagina; o, ovary; oo, oötype; os, oral sucker; pm, posterior microhook; scl, sclerite; sr, seminal receptacle; t, testis; vp, vaginal pore; e, egg; vr, viteline reservoir.

Figure 4 Neonchocotyle violantei n. sp. Haptoral appendix. Abbreviations: am, anterior microhook; pm, posterior microhook. Scale bars: 40 µm.

Figure 3 Neonchocotyle violantei n. sp. (A) Sucker-sclerite complex 3, specimen number YUC-99-038-01-1; (B) Papillae rings on sucker-sclerite complex 3. Scale bars: A = 20 μm, B = 104 µm.

Figure 5 (A) Neonchocotyle pastinacae, ventral view of haptor (modified from KTARI & MAILLARD, 1972Ktari MH, Maillard C. Neonchocotyle pastinacae n.g.- n.sp. (Monogenea-Hexabothriidae) parasite de Dasyatis pastinaca dans le golfe de Tunis: description de ' l’adulte et de la larve. Ann Parasitol Hum Comp 1972; 47(2): 181-191. http://dx.doi.org/10.1051/parasite/1972472181.
http://dx.doi.org/10.1051/parasite/19724... ); (B) Neonchocotyle violantei n. sp., ventral view of haptor; (C) Callorhynchocotyle marplatensis, ventral view of haptor (redrawn from VAUGHAN & CHRISTISON, 2012Vaughan D, Christison K. Towards addressing the current state of confusion within the Hexabothriidae Price, 1942 (1908): Callorhynchocotyle Suriano & Incorvaia, 1982 (Monogenea: Hexabothriidae) re-visited, with the preliminary evaluation of novel parameters for measuring haptoral armature of hexabothriids. Zootaxa [online] 2012; 3229: 1-34 [cited 2004 Jan 19]. Available from: http://www.mapress.com/zootaxa/2012/f/z03229p034f.pdf
http://www.mapress.com/zootaxa/2012/f/z0... ). Small numbers identify respective sucker-sclerite complexes; complex pares are indicated by numbers 1 to 3, and 1’ (1-prime) to 3’ (3-prime) (see BOEGER & KRITSKY, 1989Boeger WA, Kritsky DC. Phylogeny, coevolution, and revision of the Hexabothriidae Price, 1942 (Monogenea). Int J Parasitol 1989; 19(4): 425-440. http://dx.doi.org/10.1016/0020-7519(89)90099-4.
http://dx.doi.org/10.1016/0020-7519(89)9... ). Haptors not drawn to scale.

Figure 2 Neonchocotyle violantei n. sp.; detail of the reproductive organs. Scale bar = 75 μm. Abbreviations: dmco, distal portion of the male copulatory organ; gch, genital canal; gp, genital pore; gv, glandular region of the vagina; mv, muscular region of the vagina; o, ovary; oo, oötype; pmco, pouch of male copulatory organ; pp, pars prostactica; pxmco, proximal portion of the male copulatory organ; sde, sclerotized distal end; sr, seminal receptacle; sv, seminal vesicle; vp, vaginal pore; vr, viteline reservoir.

Figure 6 (A) Neonchocotyle pastinacae; position of the vaginal pores, ventral view (redrawn from KTARI & MAILLARD, 1972Ktari MH, Maillard C. Neonchocotyle pastinacae n.g.- n.sp. (Monogenea-Hexabothriidae) parasite de Dasyatis pastinaca dans le golfe de Tunis: description de ' l’adulte et de la larve. Ann Parasitol Hum Comp 1972; 47(2): 181-191. http://dx.doi.org/10.1051/parasite/1972472181.
http://dx.doi.org/10.1051/parasite/19724... ); (B) Neonchocotyle violantei n. sp., position of the vaginal pores, ventral view (holotype). Abbreviations: vp, vaginal pore. Scale bars: A = 200 µm, B = 75 µm.

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Colégio Brasileiro de Parasitologia Veterinária FCAV/UNESP - Departamento de Patologia Veterinária, Via de acesso Prof. Paulo Donato Castellane s/n, Zona Rural, , 14884-900 Jaboticabal - SP, Brasil, Fone: (16) 3209-7100 RAMAL 7934 - Jaboticabal - SP - Brazil
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Neonchocotyle violantei n. sp. (Monogenea, Hexabothriidae) from Pseudobatos lentiginosus (Rhinopristiformes, Rhinobatidae) of Yucatán, Gulf of Mexico

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[1] *Corresponding author: Griselda Pulido-Flores. Laboratorio de Morfología Animal, Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Hidalgo, Apartado Postal 1-10, C.P. 42001 Pachuca, Hidalgo, México. e-mail: gpflores6@hotmail.com