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Bivagina pagrosomi Murray (1931) (Monogenea: Polyopisthocotylea), a microcotylid infecting the gills of the gilt-head sea bream Sparus aurata (Sparidae) from the Red Sea: morphology and phylogeny

Saad Bin Dajem
Saad Bin Dajem
, 
Kareem Morsy
Kareem Morsy
, 
Ali Shati
Ali Shati
, 
Ahmed Ezzat
Ahmed Ezzat
, 
Fahmy El-Said
Fahmy El-Said
 and 
Rewaida Abdel-Gaber
Rewaida Abdel-Gaber
   | Sep 13, 2019
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Published Online: Sep 13, 2019
Page range: 345 - 352
Received: Feb 08, 2019
Accepted: Aug 12, 2019
DOI: https://doi.org/10.2478/jvetres-2019-0053
Keywords
© 2019 S.B. Dajem et al. published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

Photomicrographs of Bivagina pagrosomi from Sparus aurata in the Red Sea; (a) – whole mount of a paratype adult specimen, dorsal view, AO – anterior attachment organ, H – haptor; (b, c) – anterior end of body, BS – buccal suckers, E – eyes, arrows indicate the position of the two armed vaginae, PH – pharynx, GS – genital suckers; (d) – haptor (H) with clamps (C); (e) – median clamps; (f) – anterior clamps; (i, j) – paired, armed vaginae (V) with crown of spines (VS) within each vagina; (k) – isolated vaginal spine; (l) – egg (EG). Scale bars – a = 500 μm; b = 130 μm; c = 50 μm; d = 100 μm; e = 65 μm; f, i = 20 μm; j = 4 μm; k =50 μm
Photomicrographs of Bivagina pagrosomi from Sparus aurata in the Red Sea; (a) – whole mount of a paratype adult specimen, dorsal view, AO – anterior attachment organ, H – haptor; (b, c) – anterior end of body, BS – buccal suckers, E – eyes, arrows indicate the position of the two armed vaginae, PH – pharynx, GS – genital suckers; (d) – haptor (H) with clamps (C); (e) – median clamps; (f) – anterior clamps; (i, j) – paired, armed vaginae (V) with crown of spines (VS) within each vagina; (k) – isolated vaginal spine; (l) – egg (EG). Scale bars – a = 500 μm; b = 130 μm; c = 50 μm; d = 100 μm; e = 65 μm; f, i = 20 μm; j = 4 μm; k =50 μm

Fig. 2

Bivagina pagrosomi. (a) – total view; (b) – clamp, isolated median jaw, dorsal view; (c) – paired, armed vaginae; (d) – reproductive system; (e) – egg. Scale bars – a = 400 μm; b = 20 μm; c = 45 μm; d = 117 μm; e = 150 μm
Bivagina pagrosomi. (a) – total view; (b) – clamp, isolated median jaw, dorsal view; (c) – paired, armed vaginae; (d) – reproductive system; (e) – egg. Scale bars – a = 400 μm; b = 20 μm; c = 45 μm; d = 117 μm; e = 150 μm

Fig. 3

Phylogenetic tree constructed by maximum likelihood method.The analysis involved 23 nucleotide sequences. All positions containing gaps and missing data were eliminated. There were a total of 810 positions in the final dataset. Evolutionary analyses were conducted in MEGA7
Phylogenetic tree constructed by maximum likelihood method.The analysis involved 23 nucleotide sequences. All positions containing gaps and missing data were eliminated. There were a total of 810 positions in the final dataset. Evolutionary analyses were conducted in MEGA7

Estimates of evolutionary divergence between sequences:the number of base substitutions per site between sequences is shown. Analyses were conducted using the maximum composite likelihood model. The analysis involved 23 nucleotide sequences. There were a total of 529 positions in the final dataset. Evolutionary analyses were conducted in MEGA7

Species 1 2 3 4 5 6 7 8 9 10 11 12 13 14 13 16 17 18 19 20 21 22
MK439621 B. pagrosomi
Z83002.1 B. pagrosomi 0.01
MH700256.1 Microcode sp.l 0.07 0.06
GU263830.1 M. arripis 0.07 0.06 0.00
MH700266.1 Microcotyle sp.2 0.07 0.06 0.00 0.00
GU263S31.1 K. truttae 0.12 0.10 0.08 0.09 0.09
MH700259.1 Lutianicola sp. 0.11 0.10 0.09 0.10 0.10 0.12
AF382050.1 C. branquialis 0-13 0.12 0.12 0.12 0.13 0.13 0.11
FJ432539.1D.sciaenae 0.13 0.12 0.12 0.12 0.12 0.11 0.12 0.07
MH700258.1 Polylabroides sp. 0.14 0.13 0.11 0.11 0.11 0.13 0.07 0.13 0.12
MH700261.1 Caballeraxine sp. 0.16 0.15 0.12 0.12 0.12 0.13 0.14 0.15 0.15 0.13
MH700260.1 Metamicrocotyla sp. 0.15 0.14 0.12 0.13 013 0.13 0.10 0.10 0.12 0.13 0.13
MH700591.1 P. mamaevi 014 0.13 012 0.12 012 0.14 0.08 013 0.13 0.04 0.15 0.14
GU289509. 1 P. sillaginae 0.16 0.15 0.13 0.13 0.13 0.14 0.08 0.13 014 0.03 0.17 0.15 0.02
KF804036.1 H. heterapta 0.14 0.13 0.13 0.13 0.13 0.13 0.16 0.14 0.15 0.17 0.17 0.16 0.17 0.13
MH700262.1Intracotyle sp. 0.13 0.12 0.12 0.12 0.12 0.13 0.13 0.14 0.12 0.12 0.13 0.13 0.15 0.16 0.16
KF804034.1 H. chorinemi 0.14 0.13 0.13 0.13 0.13 0.13 0.16 0.14 0.16 0.17 0.13 0.16 0.17 0.18 0.00 0.16
AF382043.1N. pacifica 0.25 0.23 0.22 0.22 0.22 0.23 0.24 0.21 0.23 0.24 0.22 0.23 0.25 0.25 0.22 0.22 0.22
KJ397730. 1 P sarmientoi 0.24 0.23 020 0.21 0.21 0.21 0.24 0.21 0.21 0.23 0.22 0.24 0.25 0.23 0.22 0.21 0.22 016
AF382042.1 Paradewesia sp. 0.23 0.22 0.20 0.20 0.20 0.20 0.22 0.19 0.19 0.24 0.20 0.21 0.25 0.26 0.23 0.19 0.23 0.11 0.17
KF378589.1 Neomicrocotyle sp. 0.25 0.23 0.22 0.22 0.22 0.23 0.24 0.21 0.23 0.24 0.22 0.23 0.25 0.25 0.22 0.22 0.22 0.00 0.16 0.11
KF378588.l Lethacotyle sp. 0.26 0.24 0.23 0.23 0.23 0.24 0.24 0.20 0.22 0.24 0.23 0.23 0.25 0.25 0.22 0.22 0.23 0.02 0.16 0.12 0.02
KF804038.l A. diacanthi 5.14 5.34 5.24 5.11 5.17 5.06 5.18 5.29 5.12 5.43 5.00 5.06 5.29 5.43 5.27 5.08 5.20 5.82 5.68 5.65 5.82 7.09
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