Data/hora: 11/06/2024 08:23:32

Provedor de dados: | 42
País: | Brazil
Título: | Population dynamics and reproductive phenology of a harvestman in a tidal freshwater wetland
Autores: | IGLESIAS,PATRICIA P.; PEREYRA,MARTÍN O.
Data: | 2020-01-01
Ano: | 2020
Palavras-chave: | Abiotic factors; Breeding season; Phenology; Sex-ratio; Unpredictable floods.
Resumo: | 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100710
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765202020181123
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.92 n.1 2020
Fonte: | info:eu-repo/semantics/openAccess