Abundance and annual distribution of freshwater snails and some trematode cercariae at Damietta Governorate, Egypt

In addition to being a good food source, freshwater snails are considered one of the positively and negatively influencing invertebrates on the environment. Several biotic and abiotic factors are thought to affect the distribution and the dynamics of these snails. Freshwater snails are the most domi...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	El-Zeiny M. E., Ghoneim A. M., Abu Samak O. A., Khidr A. A.
Formato:	article
Lenguaje:	EN
Publicado:	Sciendo 2021
Materias:	snails cercariae abundance seasonal physico-chemical lanistes Agriculture (General) S1-972 Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/9ef6843b359e42e48dd4e7e08ccf427a
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:9ef6843b359e42e48dd4e7e08ccf427a
record_format	dspace
spelling	oai:doaj.org-article:9ef6843b359e42e48dd4e7e08ccf427a2021-12-05T14:11:07ZAbundance and annual distribution of freshwater snails and some trematode cercariae at Damietta Governorate, Egypt1336-908310.2478/helm-2021-0026https://doaj.org/article/9ef6843b359e42e48dd4e7e08ccf427a2021-09-01T00:00:00Zhttps://doi.org/10.2478/helm-2021-0026https://doaj.org/toc/1336-9083In addition to being a good food source, freshwater snails are considered one of the positively and negatively influencing invertebrates on the environment. Several biotic and abiotic factors are thought to affect the distribution and the dynamics of these snails. Freshwater snails are the most dominant and conspicuous individuals of the freshwater biota in Damietta Governorate. In this study, freshwater snails were collected monthly from 5 geographically and environmentally different sites at Damietta Governorate at the north of Egypt during June 2017-May 2018. Seven snail species; Lanistes carinatus, Lanistes varicus, Pila wernei, Segmentorbis angustus, Melanoides tuberculata, Biomphalaria alexandrina, and Gabbiella senoriansis, were identified. Lanistes carinatus was the most abundant species (56.4%) in the collection sites. Besides, Al-Inaniyyah village had the highest snail species abundance and variety. The abundance of the most recorded species varied seasonally; the highest abundance was recorded during summer while the lowest was during winter. The abundance of some snail species correlated positively or negatively with some physico-chemical parameters; water temperature, dissolved oxygen, conductivity, total dissolved salts, and electrical conductivity. Two types of trematode cercariae; gymnocephalus cercariae and xiphidiocercariae, were harvested from Lanistes carinatus. The highest prevalence of both cercarial types was detected during summer. The correlation between the prevalence of both cercarial types and the physico-chemical parameters were determined. Xiphidiocercariae were the most predominant cercarial type in Damietta Governorate. Our findings suggest that the invasion of some freshwater snails is likely to be the cause of the low prevalence or complete absence of some medically important intermediate snail hosts. We recommend further characterization of the distribution of freshwater snails and the interrelationships among them in Egypt, and suggest a controlled use of selected snail species to combat their medically important analogues.El-Zeiny M. E.Ghoneim A. M.Abu Samak O. A.Khidr A. A.Sciendoarticlesnailscercariaeabundanceseasonalphysico-chemicallanistesAgriculture (General)S1-972Medicine (General)R5-920ENHelminthologia, Vol 58, Iss 3, Pp 233-247 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	snails cercariae abundance seasonal physico-chemical lanistes Agriculture (General) S1-972 Medicine (General) R5-920
spellingShingle	snails cercariae abundance seasonal physico-chemical lanistes Agriculture (General) S1-972 Medicine (General) R5-920 El-Zeiny M. E. Ghoneim A. M. Abu Samak O. A. Khidr A. A. Abundance and annual distribution of freshwater snails and some trematode cercariae at Damietta Governorate, Egypt
description	In addition to being a good food source, freshwater snails are considered one of the positively and negatively influencing invertebrates on the environment. Several biotic and abiotic factors are thought to affect the distribution and the dynamics of these snails. Freshwater snails are the most dominant and conspicuous individuals of the freshwater biota in Damietta Governorate. In this study, freshwater snails were collected monthly from 5 geographically and environmentally different sites at Damietta Governorate at the north of Egypt during June 2017-May 2018. Seven snail species; Lanistes carinatus, Lanistes varicus, Pila wernei, Segmentorbis angustus, Melanoides tuberculata, Biomphalaria alexandrina, and Gabbiella senoriansis, were identified. Lanistes carinatus was the most abundant species (56.4%) in the collection sites. Besides, Al-Inaniyyah village had the highest snail species abundance and variety. The abundance of the most recorded species varied seasonally; the highest abundance was recorded during summer while the lowest was during winter. The abundance of some snail species correlated positively or negatively with some physico-chemical parameters; water temperature, dissolved oxygen, conductivity, total dissolved salts, and electrical conductivity. Two types of trematode cercariae; gymnocephalus cercariae and xiphidiocercariae, were harvested from Lanistes carinatus. The highest prevalence of both cercarial types was detected during summer. The correlation between the prevalence of both cercarial types and the physico-chemical parameters were determined. Xiphidiocercariae were the most predominant cercarial type in Damietta Governorate. Our findings suggest that the invasion of some freshwater snails is likely to be the cause of the low prevalence or complete absence of some medically important intermediate snail hosts. We recommend further characterization of the distribution of freshwater snails and the interrelationships among them in Egypt, and suggest a controlled use of selected snail species to combat their medically important analogues.
format	article
author	El-Zeiny M. E. Ghoneim A. M. Abu Samak O. A. Khidr A. A.
author_facet	El-Zeiny M. E. Ghoneim A. M. Abu Samak O. A. Khidr A. A.
author_sort	El-Zeiny M. E.
title	Abundance and annual distribution of freshwater snails and some trematode cercariae at Damietta Governorate, Egypt
title_short	Abundance and annual distribution of freshwater snails and some trematode cercariae at Damietta Governorate, Egypt
title_full	Abundance and annual distribution of freshwater snails and some trematode cercariae at Damietta Governorate, Egypt
title_fullStr	Abundance and annual distribution of freshwater snails and some trematode cercariae at Damietta Governorate, Egypt
title_full_unstemmed	Abundance and annual distribution of freshwater snails and some trematode cercariae at Damietta Governorate, Egypt
title_sort	abundance and annual distribution of freshwater snails and some trematode cercariae at damietta governorate, egypt
publisher	Sciendo
publishDate	2021
url	https://doaj.org/article/9ef6843b359e42e48dd4e7e08ccf427a
work_keys_str_mv	AT elzeinyme abundanceandannualdistributionoffreshwatersnailsandsometrematodecercariaeatdamiettagovernorateegypt AT ghoneimam abundanceandannualdistributionoffreshwatersnailsandsometrematodecercariaeatdamiettagovernorateegypt AT abusamakoa abundanceandannualdistributionoffreshwatersnailsandsometrematodecercariaeatdamiettagovernorateegypt AT khidraa abundanceandannualdistributionoffreshwatersnailsandsometrematodecercariaeatdamiettagovernorateegypt
_version_	1718371376149037056

Abundance and annual distribution of freshwater snails and some trematode cercariae at Damietta Governorate, Egypt

Ejemplares similares