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Redescription and resurrection of the status of Joyeuxiella gervaisi (Setti, 1895) (Eucestoda, Dipylidiidae)5

R. K. Schuster
R. K. Schuster
, 
N. Mehmood
N. Mehmood
, 
A. Varcasia
A. Varcasia
 and 
V. Veneziano
V. Veneziano
   | Sep 22, 2023
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Published Online: Sep 22, 2023
Page range: 166 - 174
Received: Jan 17, 2023
Accepted: Jun 02, 2023
DOI: https://doi.org/10.2478/helm-2023-0016
Keywords
© 2023 R. K. Schuster et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Joyeuxiella gervaisi (Setti, 1895) scolex from domestic cat from Dubai, UAE. The stinkhorn-shaped rostellum consists of a slender and longer stalk and conical shaped armed cap.
Joyeuxiella gervaisi (Setti, 1895) scolex from domestic cat from Dubai, UAE. The stinkhorn-shaped rostellum consists of a slender and longer stalk and conical shaped armed cap.

Fig. 2.

Joyeuxiella gervaisi (Setti, 1895) rostellum armed with rose-thorn hooks from domestic cat from Dubai, UAE.
Joyeuxiella gervaisi (Setti, 1895) rostellum armed with rose-thorn hooks from domestic cat from Dubai, UAE.

Fig. 3.

Joyeuxiella gervaisi (Setti, 1895) from domestic cat from Dubai, UAE, mature segment. The anterior end of the segment is occupied by convolutes of vasa deferens (bar: 100 μm).
Joyeuxiella gervaisi (Setti, 1895) from domestic cat from Dubai, UAE, mature segment. The anterior end of the segment is occupied by convolutes of vasa deferens (bar: 100 μm).

Fig. 4.

Joyeuxiella gervaisi (Setti, 1895) gravid segment from domestic cat from Dubai, UAE. Egg capsules are located between longitudinal excretory vessels (bar: 500 μm).
Joyeuxiella gervaisi (Setti, 1895) gravid segment from domestic cat from Dubai, UAE. Egg capsules are located between longitudinal excretory vessels (bar: 500 μm).

Fig. 5.

Cylindrical jar ‘Cest 254’ of the zoological museum of University of Naples. This vessel contains the cestodes collected by E. Setti. The host Gazella abyssinica is wrong.
Cylindrical jar ‘Cest 254’ of the zoological museum of University of Naples. This vessel contains the cestodes collected by E. Setti. The host Gazella abyssinica is wrong.

Fig. 6.

Label taken from inside of the jar ‘Cest 254’. Here, the spelling of the host is correct but the species name, Dipylidium gervasi, name is misspelled.
Label taken from inside of the jar ‘Cest 254’. Here, the spelling of the host is correct but the species name, Dipylidium gervasi, name is misspelled.

Fig. 7.

Maximum-likelihood tree (partial mitochondrial COI) computed through MEGA-X software based on kimura-2 parameter and 1000 bootstrap replicates. Taenia hydatigena was taken as the outgroup. The geographical origin and host from which the sequence was identified are also mentioned. Bootstrap values are given as number on the nodes. The sequences for Joyeuxiella gervaisi and Joyeuxiella pasqualei retrieved in this study are depicted in red.
Maximum-likelihood tree (partial mitochondrial COI) computed through MEGA-X software based on kimura-2 parameter and 1000 bootstrap replicates. Taenia hydatigena was taken as the outgroup. The geographical origin and host from which the sequence was identified are also mentioned. Bootstrap values are given as number on the nodes. The sequences for Joyeuxiella gervaisi and Joyeuxiella pasqualei retrieved in this study are depicted in red.

Metrical data of J. gervaisi and J. fuhrmanni according to various sources. (Sizes are given in μm unless stated otherwise, – : these parameters were not given in the description)

Author: Setti (1895) Baer (1926) Mettric & Beverly-Burton (1961) Jones (1983) This paper
Species: J. gervaisi J. fuhrmanni J. fuhrmanni J. fuhrmanni J. gervaisi
Host: genet serval genet wild felids, domestic cat domestic cat
(Origin): (Eritrea) (South Africa) (Rhodesia) (South Africa) (Dubai)
Parameter
Strobila length 10 – 40 mm up to 30 mm up to 94 mm 10.5 – 80 mm 30 – 60 mm
width 1 – 1.5 mm 1.6 mm 1.6 1 mm 0.9 – 1.2 mm
Proglottids number – 180 – 200 – 34 – 165 52 – 85
Scolex width 250 240 350 132 – 333 360 – 470
length 150 – 350 141 – 2500 282 – 436
Rostellum length 120 230 140 – 170 141 – 268 205 – 225
width – 100 90 56 – 137 61 – 98
Hooks circles 8 – 12 14 – 16 17 – 19 12 – 16 10 – 12 (13)
size 10 8 12 – 16 12 – 17 10 – 12
Suckers diameter 100 200 90×130 − 140 94 – 165 115 – 135
Mature segment length wider than long trapezoid 1100 114 – 1188 330 – 690
width 700 619 – 1667 825 – 1230
Cirrus sac length – 250 – 300 240 – 260 141 – 273 150 – 240
diameter – 20 – 50 50 – 70 47 – 118 75 – 120
Cirrus length 500 300 270 – up to 520
diameter 15 20 20 14 – 21 15 – 21
Testes number 36 – 46 40 – 50 33 – 42 20 – 60 28 – 38
diameter – 70 – 47 – 81 50 – 70
Ovary diameter – – 120 – 160 188 – 282 130 – 250
Yolk gland size – – 40 – 60 45 – 165 60 – 96
Receptaculum seminis length – – 100 66 – 212 75 – 130
diameter – – 50 28 – 85 25 – 60
Gravid segment length – 2100 4900 1400 – 4000 2100 – 4050
width – 900 1600 600 – 1800 840 – 1170
Egg capsule diameter 50 42 – 46 54 – 59 50 – 71 50 – 80
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