Document Detail


Temporal variation in the dispersion patterns of metazoan parasites of a coastal fish species from the Gulf of Mexico.
MedLine Citation:
PMID:  23298602     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Global climate change (GCC) is expected to affect key environmental variables such as temperature and rainfall, which in turn influence the infection dynamics of metazoan parasites in tropical aquatic hosts. Thus, our aim was to determine how temporal patterns of temperature and rainfall influence the mean abundance and aggregation of three parasite species of the fish Cichlasoma urophthalmus from Yucatán, México. We calculated mean abundance and the aggregation parameter of the negative binomial distribution k for the larval digeneans Oligogonotylus manteri and Ascocotyle (Phagicola) nana and the ectoparasite Argulus yucatanus monthly from April 2005 to December 2010. Fourier analysis of time series and cross-correlations were used to determine potential associations between mean abundance and k for the three parasite species with water temperature and rainfall. Both O. manteri and A. (Ph.) nana exhibited their highest frequency peaks in mean abundance at 6 and 12 months, respectively, while their peak in k occurred every 24 months. For A. yucatanus the frequency peaks in mean abundance and k occurred every 12 months. We suggest that the level of aggregation at 24 months of O. manteri increases the likelihood of fish mortality. Such a scenario is less likely for A. (Ph.) nana and A. yucatanus, due to their low infection levels. Our findings suggest that under the conditions of GCC it would be reasonable to expect higher levels of parasite aggregation in tropical aquatic hosts, in turn leading to a potential increase in parasite-induced host mortality.
Authors:
V M Vidal-Martínez; P Pal; M L Aguirre-Macedo; A L May-Tec; J W Lewis
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-9
Journal Detail:
Title:  Journal of helminthology     Volume:  -     ISSN:  1475-2697     ISO Abbreviation:  J. Helminthol.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985115R     Medline TA:  J Helminthol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-11     Citation Subset:  -    
Affiliation:
Laboratorio de Parasitología, Departamento de Recursos del Mar, Cinvestav-IPN Unidad Mérida, Carretera antigua a Progreso km 6, Apdo. Postal 73 - Cordemex, 97310 Mérida, Yucatán, México.
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