| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000436241 |
| ISSN: | 0001-3765 |
| Authors: | Iglesias, Patricia P1 Pereyra, Martín O2 |
| Institutions: | 1Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", División Aracnología, Buenos Aires. Argentina 2Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", División Herpetología, Buenos Aires. Argentina |
| Year: | 2020 |
| Volumen: | 92 |
| Number: | 1 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | There is a great amount of ecological information for terrestrial arthropods in several types of habitats, but few studies have focused on populations living in tidal freshwater wetlands. During a two-year field survey, we studied the temporal dynamics of the harvestman Discocyrtus prospicuus inhabiting a freshwater wetland exposed to predictable tides and unpredictable floods. We also explored the effects of temperature, precipitation, and tide level on the population dynamics and reproductive phenology. Our findings are markedly different from those reported in other harvestman species living in different habitats and also from conspecific populations living in the mainland. Adults, subadults, and juveniles remain active throughout the year, and a long breeding season was observed. However, the number of adults, subadults, juveniles, and egg clutches showed clear variations over the year without a consistent seasonal pattern. Contrary to the general pattern in harvestmen, no climatic variables were significant predictors of abundance fluctuations. We discuss the potential masking effect of unpredictable flood events, obscuring the relationship between abundance and abiotic factors. In addition, given that climatic conditions seem to favor harvestmen activity throughout the year, we also hypothesized that abundance variations could be driven mainly by biotic rather than by abiotic interactions |
| Disciplines: | Biología |
| Keyword: | Quelicerados, Reproducción y desarrollo, Ecología, Dinámica de poblaciones, Factores abióticos, Ciclo reproductivo, Proporción sexual, Epoca reproductiva, Humedales, Factores abióticos, Discocyrtus prospicuus, Opiliones |
| Keyword: | Chelicerata, Reproduction and development, Ecology, Population dynamics, Abiotic factors, Reproductive cycle, Breeding season, Sex ratio, Wetlands, Abiotic factors, Discocyrtus prospicuus, Opiliones |
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