Population biology of Posthodiplostomum namum Dubois, 1937 (Trematoda, Diplostomidae) in Jenynsia lineata and Cnesterodon decemmaculatus (Pisces, Atheriniformes), of Chis-Chis Lagoon, Province of Buenos Aires, Argentina

The characteristics of the population dynamics of Posthodiplostomum nanum have been studied in two of its intermediate hosts, using prevalence, intensity and maturity of the metacercariae, considering the influence of the water temperature. In addition to this some ecological implications are descri...

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Autores principales:	Doma, I.L., Ostrowski de Núñez, M.
Formato:	JOUR
Materias:	fresh water animal Argentina article chi square distribution female fish male parasitology physiology population dynamics season trematode Animals Chi-Square Distribution Female Fishes Fresh Water Male Population Dynamics Seasons Trematoda
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00347108_v54_n4_p669_Doma
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00347108_v54_n4_p669_Doma
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spelling	todo:paper_00347108_v54_n4_p669_Doma2023-10-03T14:46:16Z Population biology of Posthodiplostomum namum Dubois, 1937 (Trematoda, Diplostomidae) in Jenynsia lineata and Cnesterodon decemmaculatus (Pisces, Atheriniformes), of Chis-Chis Lagoon, Province of Buenos Aires, Argentina Doma, I.L. Ostrowski de Núñez, M. fresh water animal Argentina article chi square distribution female fish male parasitology physiology population dynamics season trematode Animals Argentina Chi-Square Distribution Female Fishes Fresh Water Male Population Dynamics Seasons Trematoda The characteristics of the population dynamics of Posthodiplostomum nanum have been studied in two of its intermediate hosts, using prevalence, intensity and maturity of the metacercariae, considering the influence of the water temperature. In addition to this some ecological implications are described. There were made 18 samples monthly or bimonthly from may 1986 until march 1989, 1113 fishes were captured out of which 956 metacercariae were obtained. P. nanum was present along the year, having significant seasonal variation in prevalence and intensity of infestation. It was observed that the water temperature is a relevant factor in the maturation of the parasite. The values of the prevalence and intensity of infestation were higher in Jenynsia lineata than in Cnesterodon decemmaculatus. This could be explained by various factors: a) distribution of the first intermediate host; b) behavior of the second intermediate host and c) individual physiological differences of each host, specially in relation to reproduction. The relation S2/X fluctuated during the whole year, indicating the recruitment-period (autumn, spring) and the nonrecruitment-period (winter, summer) of metacercariae. Fil:Ostrowski de Núñez, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00347108_v54_n4_p669_Doma
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	fresh water animal Argentina article chi square distribution female fish male parasitology physiology population dynamics season trematode Animals Argentina Chi-Square Distribution Female Fishes Fresh Water Male Population Dynamics Seasons Trematoda
spellingShingle	fresh water animal Argentina article chi square distribution female fish male parasitology physiology population dynamics season trematode Animals Argentina Chi-Square Distribution Female Fishes Fresh Water Male Population Dynamics Seasons Trematoda Doma, I.L. Ostrowski de Núñez, M. Population biology of Posthodiplostomum namum Dubois, 1937 (Trematoda, Diplostomidae) in Jenynsia lineata and Cnesterodon decemmaculatus (Pisces, Atheriniformes), of Chis-Chis Lagoon, Province of Buenos Aires, Argentina
topic_facet	fresh water animal Argentina article chi square distribution female fish male parasitology physiology population dynamics season trematode Animals Argentina Chi-Square Distribution Female Fishes Fresh Water Male Population Dynamics Seasons Trematoda
description	The characteristics of the population dynamics of Posthodiplostomum nanum have been studied in two of its intermediate hosts, using prevalence, intensity and maturity of the metacercariae, considering the influence of the water temperature. In addition to this some ecological implications are described. There were made 18 samples monthly or bimonthly from may 1986 until march 1989, 1113 fishes were captured out of which 956 metacercariae were obtained. P. nanum was present along the year, having significant seasonal variation in prevalence and intensity of infestation. It was observed that the water temperature is a relevant factor in the maturation of the parasite. The values of the prevalence and intensity of infestation were higher in Jenynsia lineata than in Cnesterodon decemmaculatus. This could be explained by various factors: a) distribution of the first intermediate host; b) behavior of the second intermediate host and c) individual physiological differences of each host, specially in relation to reproduction. The relation S2/X fluctuated during the whole year, indicating the recruitment-period (autumn, spring) and the nonrecruitment-period (winter, summer) of metacercariae.
format	JOUR
author	Doma, I.L. Ostrowski de Núñez, M.
author_facet	Doma, I.L. Ostrowski de Núñez, M.
author_sort	Doma, I.L.
title	Population biology of Posthodiplostomum namum Dubois, 1937 (Trematoda, Diplostomidae) in Jenynsia lineata and Cnesterodon decemmaculatus (Pisces, Atheriniformes), of Chis-Chis Lagoon, Province of Buenos Aires, Argentina
title_short	Population biology of Posthodiplostomum namum Dubois, 1937 (Trematoda, Diplostomidae) in Jenynsia lineata and Cnesterodon decemmaculatus (Pisces, Atheriniformes), of Chis-Chis Lagoon, Province of Buenos Aires, Argentina
title_full	Population biology of Posthodiplostomum namum Dubois, 1937 (Trematoda, Diplostomidae) in Jenynsia lineata and Cnesterodon decemmaculatus (Pisces, Atheriniformes), of Chis-Chis Lagoon, Province of Buenos Aires, Argentina
title_fullStr	Population biology of Posthodiplostomum namum Dubois, 1937 (Trematoda, Diplostomidae) in Jenynsia lineata and Cnesterodon decemmaculatus (Pisces, Atheriniformes), of Chis-Chis Lagoon, Province of Buenos Aires, Argentina
title_full_unstemmed	Population biology of Posthodiplostomum namum Dubois, 1937 (Trematoda, Diplostomidae) in Jenynsia lineata and Cnesterodon decemmaculatus (Pisces, Atheriniformes), of Chis-Chis Lagoon, Province of Buenos Aires, Argentina
title_sort	population biology of posthodiplostomum namum dubois, 1937 (trematoda, diplostomidae) in jenynsia lineata and cnesterodon decemmaculatus (pisces, atheriniformes), of chis-chis lagoon, province of buenos aires, argentina
url	http://hdl.handle.net/20.500.12110/paper_00347108_v54_n4_p669_Doma
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Population biology of Posthodiplostomum namum Dubois, 1937 (Trematoda, Diplostomidae) in Jenynsia lineata and Cnesterodon decemmaculatus (Pisces, Atheriniformes), of Chis-Chis Lagoon, Province of Buenos Aires, Argentina

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