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Morphological characterization of Dujardinascaris spp. (Nematoda: Anisakidae) from the striped red mullet Mullus surmuletus in the Mediterranean Sea

R. Gamal Taha Hassan

R. Gamal Taha Hassan

Department of Biological and Geological Sciences, Faculty of Education, Ain-Shams UniversityCairo, Egypt
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Hassan, R. Gamal Taha
  
06 nov. 2019
Morphological characterization of Dujardinascaris spp. (Nematoda: Anisakidae) from the striped red mullet Mullus surmuletus in the Mediterranean Sea's Cover Image
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Catégorie d'article: Research Note
Publié en ligne: 06 nov. 2019
Pages: 338 - 346
Reçu: 14 juin 2019
Accepté: 04 sept. 2019
DOI: https://doi.org/10.2478/helm-2019-0032
Mots clés
© 2019 R. Gamal Taha Hassan, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Fig. 1

(A – E): Dujardinascaris spp. from Red Mullet Mullus surmuletus in Mediterranean Sea. A: Anterior end of male dorsal view, B: cephalic region of male, C: The posterior end of female subventral view, D: The posterior end of male ventral view, E: Egg. Scale bars: A,C 0.2; B 200 μm; D 0.3; E 50 μm.
(A – E): Dujardinascaris spp. from Red Mullet Mullus surmuletus in Mediterranean Sea. A: Anterior end of male dorsal view, B: cephalic region of male, C: The posterior end of female subventral view, D: The posterior end of male ventral view, E: Egg. Scale bars: A,C 0.2; B 200 μm; D 0.3; E 50 μm.

Fig. 2

(A – F): Scanning Electron Microscope of Dujardinascaris spp. (A): The cephalic region of the worm with interlocked processes, A amphid, L lip, It interlabium, T teeth, DP double papillae, SP single papilla, CP cuticular prolongation. (B): the anterior end showing the cephalic lateral pouches (arrows). (C): The middle region of nematode body showing the cuticular transverse striations. (D): The vulvar region with protruded vagina V. (E): The dorsal view of somatic region showing the longitudinal annulation LA, large rounded-like papilla LP. (F): The post-equatorial part of nematode body showing papillae P. Scale bars: A,D,H,I,K,L = 50 μm, B,C,EF,G,J = 10 μm.
(A – F): Scanning Electron Microscope of Dujardinascaris spp. (A): The cephalic region of the worm with interlocked processes, A amphid, L lip, It interlabium, T teeth, DP double papillae, SP single papilla, CP cuticular prolongation. (B): the anterior end showing the cephalic lateral pouches (arrows). (C): The middle region of nematode body showing the cuticular transverse striations. (D): The vulvar region with protruded vagina V. (E): The dorsal view of somatic region showing the longitudinal annulation LA, large rounded-like papilla LP. (F): The post-equatorial part of nematode body showing papillae P. Scale bars: A,D,H,I,K,L = 50 μm, B,C,EF,G,J = 10 μm.

Fig. 2

(G – M): Scanning Electron Microscope of Dujardinascaris spp. (G): The ventral surface of the worm at cuticular region showing buttom-like papilla (arrow). (H): The cuticle at the posterior region of female worm showing the transverse striations. (I): The posterior end of female showing anus An & the caudal alae (arrows). (J): The cuticle at the anal region showing the transverse striations. (K): The posterior end of male showing the cuticular transverse striations. (L): The posterior end of male showing spicules (arrows). Scale bars: A,D,H,I,K,L = 50 μm, B,C,EF,G,J = 10 μm.
(G – M): Scanning Electron Microscope of Dujardinascaris spp. (G): The ventral surface of the worm at cuticular region showing buttom-like papilla (arrow). (H): The cuticle at the posterior region of female worm showing the transverse striations. (I): The posterior end of female showing anus An & the caudal alae (arrows). (J): The cuticle at the anal region showing the transverse striations. (K): The posterior end of male showing the cuticular transverse striations. (L): The posterior end of male showing spicules (arrows). Scale bars: A,D,H,I,K,L = 50 μm, B,C,EF,G,J = 10 μm.

Morphometric comparison of some species of nematode Dujardinascaris from fishes with the present species_(The data for the previous described species are taken from the original descriptions)_

CharactersD. melapteruriD. mujibiD. mormyropsisDujardinascaris spp.
Length ♂14.817 – 2411.5 – 15.3310 – 14.2
♀12.3 – 35.023 – 3826 – 43.2213 – 22.5
Width ♂0.30.25 – 0.650.38 – 0.540.33 – 0.47
♀0.25 – 0.680.76 – 0.840.089 – 0.10.18 – 0.34
Lips L. ♂70 μm–75 – 90 μm70 – 98 μm
♀50 – 110 μm135 – 159 μm50 – 90 μm
Interlabia L. ♂––30 – 45 μm33 – 41 μm
♀78 – 96 μm40 – 60 μm
Esophagus L. ♂1.72.25 – 2.751.32 – 1.841.21 – 1.66
♀1.3 – 2.64.45 – 5.842.2 – 3.071.67 – 2.1
Esophagus W. ♂–0.11 – 0.150.08 – 0.110.062 – 0.071
♀0.15 – 0.180.09 – 0.120.07 – 0.082
Nerve ring * ♂0.35–0.42 – 0.560.35 – 0.37
♀0.27 – 0.410.58 – 0.770.41 – 0.52
Excretory pore *♂0.36–0.42 – 0.560.36 – 0.39
♀0.40.58 – 0.810.46 – 0.57
Intestinal canal ♂1.1–0.68 – 1.110.71 – 1.33
♀0.77 – 21.19 – 1.731.11 – 1.43
Tail L.0.08–0.12 – 0.170.11 – 0.17
0.15 – 0.41
Spicule L.1.4 μm1.13 – 1.34 μm1.7 – 1.81 μm2.23 – 3.45 μm
Gubernaculum L.––0.186 – 0.20.08 – 0.11
Vulva *––9.13 – 15.920.093 – 1.15
Egg L.––0.06 – 0.090.052 – 0.09
Egg W.––0.052 – 0.0720.04 – 0.078
Caudal alaeAbsentAbsentAbsentpresent
Host speciesMalapterurus electricusPagrus pagrusMormyrops anguilloidesMullus surmuletus
LocalityKhartoum, SudanRed Sea, EgyptCentral AfricaMediterranean Sea, Egypt
AuthorSprent, (1990)Morsy et al. (2013)Moravec & Jirku, (2014)Present study (2019)
Langue:
Anglais
Périodicité:
4 fois par an
Sujets de la revue:
Sciences de la vie, Zoologie, Écologie, Sciences de la vie, autres, Médecine, Médecine clinique, Microbiologie, virologie et epidémiologie des infections
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