Ecological study on helminths of three species of Gobiidae from the Danube River, Bulgaria

R. G. Zaharieva; P. G. Zaharieva; D. A. Kirin

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Ecological study on helminths of three species of Gobiidae from the Danube River, Bulgaria

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| Jun 04, 2023

Volume 60 (2023): Issue 1 (March 2023)

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Page range: 63 - 72

Received: Oct 17, 2022

Accepted: Feb 21, 2023

DOI: https://doi.org/10.2478/helm-2023-0008

Keywords
Bulgarian section, ecological indices, endoparasitic species

© 2023 R. G. Zaharieva et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Sampling sites, Danube River (https://www.google.bg/maps/place/Видин – https://www.google.bg/maps/place/Vidin)

Comparative examination of the ecological indices (MI, MA, and P%) of Nicolla skrjabini and Acanthocephalus lucii from the upper section of the Danube River in Bulgaria.

Species diversity and ecological indices in the helminth community of Babka gymnotrachelus from the Danube River (N – number of investigated fish; n – number of infected fish; p – number of fish helminths; MI – mean intensity; MA – mean abundance; P% – prevalence; R – range)

Babka gymnotrachelus (N = 5 / Kudelin) Helminth species	n	p	MI	MA	P%	R
Nicolla skrjabini	1	52	52.00	10.40	20.00	52
Acanthocephalus lucii	2	33	16.50	6.60	40.00	3–30
Eustrongylides excisus	2	3	1.50	0.60	40.00	1–2

Babka gymnotrachelus (N = 4 / Novo selo) Helminth species	n	p	MI	MA	P%	R

Nicolla skrjabini	3	292	97.33	73.00	75.00	15–237
Acanthocephalus lucii	3	59	19.67	14.75	75.00	2–39
Eustrongylides excisus	1	9	9.00	2.25	25.00	9

Distribution of established helminth species in B. gymnotrachelus, N. fluviatilis, and N. melanostomus from four biotopes located in the upper section of the Danube River in Bulgaria.

Fish species	Babka gymnotrachelusN = 9		Neogobius fluviatilisN = 48				Neogobius melanostomusN = 15
Fish species
Sampling sitesHelminth species	KudelinN = 5	Novo seloN = 4	KudelinN = 31	KoshavaN = 5	Novo seloN = 11	KutovoN = 1	KudelinN = 8	KoshavaN = 3	Novo seloN = 4
Nicolla skrjabini (Iwanitzky, 1928) Dollfus, 1960	•	•	•		•	•	•	•
Acanthocephalus anguillae (Müller, 1780) Lühe, 1911								•
Acanthocephalus lucii (Müller, 1776) Lühe, 1911	•	•	•		•		•		•
Eustrongylides excisus Jägerskiöld, 1909	•	•	•		•
Pomphorhynchus laevis (Zoega in Müller, 1776) Porta, 1908								•
Contracaecum sp.							•

Species diversity and ecological indices in the helminth community of Neogobius fluviatilis from the Danube River (N – number of investigated fish; n – number of infected fish; p – number of fish parasites; MI – mean intensity; MA – mean abundance; P% – prevalence; R – range)

Neogobius fluviatilis (N = 31 / Kudelin) Helminth species	n	p	MI	MA	P%	R
Nicolla skrjabini	15	47	3.13	1.52	48.39	1–17
Acanthocephalus lucii	10	55	5.50	1.77	32.26	1–38
Eustrongylides excisus	8	13	1.63	0.42	25.81	1–2

Neogobius fluviatilis (N = 11 / Novo selo) Helminth species	n	p	MI	MA	P%	R

Nicolla skrjabini	6	9	1.50	0.82	54.55	1–2
Acanthocephalus lucii	1	1	1.00	0.09	9.09	1
Eustrongylides excisus	1	1	1.00	0.09	9.09	1

Neogobius fluviatilis (N = 1 / Kutovo) Helminth species	n	p	MI	MA	P%	R

Nicolla skrjabini	1	3	3.00	3.00	100.00	3

Metric data (L – total length, H – maximum height, W – body weight) of the studied specimens of Babka gymnotrachelus, Neogobius fluviatilis, Neogobius melanostomus.

The Danube River		L (cm)	H (cm)	W (g)
Babka gymnotrachelus N = 9	min – max	8.8 – 16	1.2 – 2.5	4 – 37
Babka gymnotrachelus N = 9	Mean ± SD	10.83 ± 2.24	1.73 ± 0.46	12.78 ± 10.60
Neogobius fluviatilis N = 48	min – max	5.4 – 12	0.8 – 2.4	1 – 18
Neogobius fluviatilis N = 48	Mean ± SD	8.61 ± 1.39	1.39 ± 0.31	4.49 ± 3.23
Neogobius melanostomus N = 15	min – max	6.3 – 11.6	1.1 – 2.4	2 – 13
Neogobius melanostomus N = 15	Mean ± SD	8.23 ± 1.66	1.56 ± 0.34	6.07 ± 3.49

Species diversity and ecological indices in the helminth community of Neogobius melanostomus from the Danube River (N – number of investigated fish; n – number of infected fish; p – number of fish parasites; MI – mean intensity; MA – mean abundance; P% – prevalence; R – range)

Neogobius melanostomus (N = 8 / Kudelin) Helminth species	n	p	MI	MA	P%	R
Nicolla skrjabini	5	16	3.20	2.00	62.50	1–8
Acanthocephalus lucii	5	123	24.60	15.38	62.50	1–90
Contracaecum sp.	1	1	1.00	0.13	12.50	1

Neogobius melanostomus (N = 3 / Koshava) Helminth species	n	p	MI	MA	P%	R

Nicolla skrjabini	1	1	1.00	0.33	33.33	1
Acanthocephalus anguillae	1	38	38.00	12.67	33.33	38
Pomphorhynchus laevis	1	11	11.00	3.67	33.33	11

Neogobius melanostomus (N = 4 / Novo selo) Helminth species	n	p	MI	MA	P%	R

Acanthocephalus lucii	1	1	1.00	0.25	25.00	1

Species composition of parasites of Babka gymnotrachelus, Neogobius fluviatilis, Neogobius melanostomus from the Danube River and its basin in different countries (* – endohelminths also found in the present study from the respective fish species)

Fish species	Authors	Sampling sites	Endohelminth species
Babka gymnotrachelus	Ondračková et al. (2012)	Danube River, Bulgaria – Vidin town, Koshava and Gomotartsi villages	^N. skrjabini (MA = 3.41, P% = 84.4);Raphidascaris acus (Boch, 1779);^E. excisus (MA = 0.41, P% = 28.1);P. laevis

Neogobius fluviatilis	Margaritov (1966)	Danube River, Bulgaria – between the mouth of the Timok River and Novo Selo village	^*N. skrjabini;P. laevis;C. bidentatum;Rhabdochona sp.;Acanthocephala gen sp.
	Kakacheva-Avramova (1977)	Danube River, Bulgaria	^*N. skrjabini;P. laevis;C. bidentatum
	Kakacheva-Avramova et al. (1978)	Danube River, Bulgaria – Vidin and Lom towns	^*N. skrjabini;C. bidentatum;Contracaecum sp. (larvae);Rhabdochona sp. (larvae);P. laevis
	Molnár & Székely (1995)	Lake Balaton, Hungary	Ligula sp. (larvae);Proteocephalus sp.;Ang. crassus (larvae)
	Ondračková et al. (2005)	Hron River, Slovakia	^*N. skrjabini;P. laevis (larvae);Contracaecum sp. (larvae);R. acus (larvae)
	Molnár (2006)	Danube River, Hungary	^*N. skrjabini;P. laevis;R. acus (larvae)
	Kosuthova et al. (2009)	Danube River, Slovakia	^*N. skrjabini;P. laevis
	Ondračková et al. (2012)	Danube River, Bulgaria – Koshava and Gomotartsi villages	^N. skrjabini (MA = 8.76, P% = 52.6);^E. excisus (MA = 0.32, P% = 15.8);P. laevis
	Kirin et al. (2013)	Danube River, Bulgaria – Vetren village	Pomphorhynchus tereticollis (Rudolphi, 1809) Meyer, 1932

Neogobius melanostomus	Ondračková et al. (2005)	Danube River, Slovakia	^N. skrjabini;^P. laevis (larvae);R. acus (larvae)
	Molnár (2006)	Danube River, Hungary	^N. skrjabini;^P. laevis
	Kosuthova et al. (2009)	Danube River, Slovakia	^*P. laevis
	Mühlegger et al. (2010)	Danube River, Austria	^N. skrjabini;^Ac. lucii
Neogobius melanostomus	Ondračková et al. (2010)	Danube River, Austria – Orth an der Donau	^*P. laevis;R. acus
	Ondračková et al. (2010)	Danube River, Bulgaria – Vidin town	^*P. laevis (MA = 54.5, P% = 96.4; MA = 97.5, P% = 100);R. acus
	Francová et al. (2011)	Danube River, Austria – Orth an der Donau	^N. skrjabini;^P. laevis;E. excisus (larvae);R. acus (larvae)
		Danube River, Slovakia – Gabčíkovo	^*P. laevis;R. acus (larvae);C. lacustris
		Danube River, Bulgaria – Vidin and Ruse towns	^N. skrjabini (MA = 0.1, P% = 3.6 for Vidin; MA = 0.3, P% = 7.9 for Ruse);Nicolla sp.;^P. laevis (MA = 43.3, P% = 99.4 for Vidin; MA = 22.1, P%=94.7 for Ruse);E. excisus, larvae;R. acus, larvae
	Atanasov (2012)	Danube River, Bulgaria – Archar, Dobri Dol and Gomotartsi villages	E. excisus
	Ondračková et al. (2012)	Danube River, Austria – Orth an der Donau	^N. skrjabini;R. acus;^P. laevis
	Ondračková et al. (2012)	Danube River, Bulgaria – Vidin town	^N. skrjabini (MA = 0.11, P% = 5.3);R. acus;^P. laevis (MA = 18.4, P% = 94.7);E. excisus
	Ondračková et al. (2021)	Morava River, the Czech Republic	Eustrongylides spp. (larvae)

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Ecological study on helminths of three species of Gobiidae from the Danube River, Bulgaria

Published Online: Jun 04, 2023

Page range: 63 - 72

Received: Oct 17, 2022

Accepted: Feb 21, 2023

DOI: https://doi.org/10.2478/helm-2023-0008

Keywords
Bulgarian section, ecological indices, endoparasitic species

© 2023 R. G. Zaharieva et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Fig. 2.

Species diversity and ecological indices in the helminth community of Babka gymnotrachelus from the Danube River (N – number of investigated fish; n – number of infected fish; p – number of fish helminths; MI – mean intensity; MA – mean abundance; P% – prevalence; R – range)

Distribution of established helminth species in B. gymnotrachelus, N. fluviatilis, and N. melanostomus from four biotopes located in the upper section of the Danube River in Bulgaria.

Species diversity and ecological indices in the helminth community of Neogobius fluviatilis from the Danube River (N – number of investigated fish; n – number of infected fish; p – number of fish parasites; MI – mean intensity; MA – mean abundance; P% – prevalence; R – range)

Metric data (L – total length, H – maximum height, W – body weight) of the studied specimens of Babka gymnotrachelus, Neogobius fluviatilis, Neogobius melanostomus.

Species diversity and ecological indices in the helminth community of Neogobius melanostomus from the Danube River (N – number of investigated fish; n – number of infected fish; p – number of fish parasites; MI – mean intensity; MA – mean abundance; P% – prevalence; R – range)

Species composition of parasites of Babka gymnotrachelus, Neogobius fluviatilis, Neogobius melanostomus from the Danube River and its basin in different countries (* – endohelminths also found in the present study from the respective fish species)

Ecological study on helminths of three species of Gobiidae from the Danube River, Bulgaria

Published Online: Jun 04, 2023

Page range: 63 - 72

Received: Oct 17, 2022

Accepted: Feb 21, 2023

DOI: https://doi.org/10.2478/helm-2023-0008

KeywordsBulgarian section, ecological indices, endoparasitic species

© 2023 R. G. Zaharieva et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Fig. 2.

Species diversity and ecological indices in the helminth community of Babka gymnotrachelus from the Danube River (N – number of investigated fish; n – number of infected fish; p – number of fish helminths; MI – mean intensity; MA – mean abundance; P% – prevalence; R – range)

Distribution of established helminth species in B. gymnotrachelus, N. fluviatilis, and N. melanostomus from four biotopes located in the upper section of the Danube River in Bulgaria.

Species diversity and ecological indices in the helminth community of Neogobius fluviatilis from the Danube River (N – number of investigated fish; n – number of infected fish; p – number of fish parasites; MI – mean intensity; MA – mean abundance; P% – prevalence; R – range)

Metric data (L – total length, H – maximum height, W – body weight) of the studied specimens of Babka gymnotrachelus, Neogobius fluviatilis, Neogobius melanostomus.

Species diversity and ecological indices in the helminth community of Neogobius melanostomus from the Danube River (N – number of investigated fish; n – number of infected fish; p – number of fish parasites; MI – mean intensity; MA – mean abundance; P% – prevalence; R – range)

Species composition of parasites of Babka gymnotrachelus, Neogobius fluviatilis, Neogobius melanostomus from the Danube River and its basin in different countries (* – endohelminths also found in the present study from the respective fish species)

Keywords
Bulgarian section, ecological indices, endoparasitic species