Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico
We studied monogenean communities of 11 populations of Astyanax aeneus (Günther) separated by small geographical distances along 60 km of the Lacantún river in Chiapas, Mexico, in February and August 2012. We found 12 monogenean taxa. Amongst these, five species specialist for Astyanax were widely d...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
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Elsevier
2019
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| Materias: | |
| Acceso en línea: | http://eprints.uanl.mx/20228/1/1-s2.0-S2213224418301433-main.pdf |
| _version_ | 1824415783315308544 |
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| author | Salgado Maldonado, Guillermo Mendoza Franco, Edgar F. Caspeta Mandujano, Juan Manuel Ramírez Martínez, Carlos |
| author_facet | Salgado Maldonado, Guillermo Mendoza Franco, Edgar F. Caspeta Mandujano, Juan Manuel Ramírez Martínez, Carlos |
| author_sort | Salgado Maldonado, Guillermo |
| collection | Repositorio Institucional |
| description | We studied monogenean communities of 11 populations of Astyanax aeneus (Günther) separated by small geographical distances along 60 km of the Lacantún river in Chiapas, Mexico, in February and August 2012. We found 12 monogenean taxa. Amongst these, five species specialist for Astyanax were widely distributed regionally, constituting 90% of the total collected monogeneans, with one of these species dominating most component communities. The high similarities in terms of composition between the component communities (SJaccard > 60%) as well as in terms of the abundance and composition between infracommunities (SBray Curtis > 40%), provide empirical evidence that transmission, both between hosts at the same location and between component communities, is high and effective. No resemblance pattern was detected between locations in terms of their spatial distribution. The composition of these communities was spatially and temporally consistent over the two very different weather periods sampled. These communities were not saturated. Our analysis suggests that the potential richness of the infracommunities is proportional to the number of monogenean species available in the component community. We found aggregation in the populations and between monogenean species. Intraspecific aggregation is density dependent, suggesting that intraspecific competition for space is not a limiting factor for the development of the population. We evaluated the associations for each species pair and detected 77% negative interactions (134/177 associations), suggesting that interspecific competition plays an important role in shaping these communities. The negative correlations of abundance between pairs of species contributes to confirmation of competition. Intraspecific aggregation increased relative to interspecific aggregation with richness in the component community, facilitating coexistence of the species. Our results suggest that these are interactive communities, where monogeneans disperse efficiently from a common source, colonize patches (hosts) together, and compete with other species even at low population densities.
Finally, the coexistence of these species is favored by the unpredictable recruitment and aggregated use of
fragmented resources. |
| format | Article |
| id | eprints-20228 |
| institution | UANL |
| language | English |
| publishDate | 2019 |
| publisher | Elsevier |
| record_format | eprints |
| spelling | eprints-202282020-11-19T17:02:07Z http://eprints.uanl.mx/20228/ Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico Salgado Maldonado, Guillermo Mendoza Franco, Edgar F. Caspeta Mandujano, Juan Manuel Ramírez Martínez, Carlos QL Zoología We studied monogenean communities of 11 populations of Astyanax aeneus (Günther) separated by small geographical distances along 60 km of the Lacantún river in Chiapas, Mexico, in February and August 2012. We found 12 monogenean taxa. Amongst these, five species specialist for Astyanax were widely distributed regionally, constituting 90% of the total collected monogeneans, with one of these species dominating most component communities. The high similarities in terms of composition between the component communities (SJaccard > 60%) as well as in terms of the abundance and composition between infracommunities (SBray Curtis > 40%), provide empirical evidence that transmission, both between hosts at the same location and between component communities, is high and effective. No resemblance pattern was detected between locations in terms of their spatial distribution. The composition of these communities was spatially and temporally consistent over the two very different weather periods sampled. These communities were not saturated. Our analysis suggests that the potential richness of the infracommunities is proportional to the number of monogenean species available in the component community. We found aggregation in the populations and between monogenean species. Intraspecific aggregation is density dependent, suggesting that intraspecific competition for space is not a limiting factor for the development of the population. We evaluated the associations for each species pair and detected 77% negative interactions (134/177 associations), suggesting that interspecific competition plays an important role in shaping these communities. The negative correlations of abundance between pairs of species contributes to confirmation of competition. Intraspecific aggregation increased relative to interspecific aggregation with richness in the component community, facilitating coexistence of the species. Our results suggest that these are interactive communities, where monogeneans disperse efficiently from a common source, colonize patches (hosts) together, and compete with other species even at low population densities. Finally, the coexistence of these species is favored by the unpredictable recruitment and aggregated use of fragmented resources. Elsevier 2019 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/20228/1/1-s2.0-S2213224418301433-main.pdf http://eprints.uanl.mx/20228/1.haspreviewThumbnailVersion/1-s2.0-S2213224418301433-main.pdf Salgado Maldonado, Guillermo y Mendoza Franco, Edgar F. y Caspeta Mandujano, Juan Manuel y Ramírez Martínez, Carlos (2019) Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico. International Journal for Parasitology: Parasites and Wildlife, 8. pp. 203-215. ISSN 2213-2244 http://doi.org/10.1016/j.ijppaw.2019.02.005 doi:10.1016/j.ijppaw.2019.02.005 |
| spellingShingle | QL Zoología Salgado Maldonado, Guillermo Mendoza Franco, Edgar F. Caspeta Mandujano, Juan Manuel Ramírez Martínez, Carlos Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico |
| title_full | Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico |
| title_fullStr | Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico |
| title_full_unstemmed | Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico |
| title_short | Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico |
| title_sort | aggregation and negative interactions in low diversity and unsaturated monogenean platyhelminthes communities in astyanax aeneus teleostei populations in a neotropical river of mexico |
| topic | QL Zoología |
| url | http://eprints.uanl.mx/20228/1/1-s2.0-S2213224418301433-main.pdf |
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