Life history traits and secondary production ofCampsurus violaceus(Ephemeroptera: Polymitarcyidae) in the Paraná River floodplain lakes, Argentina

Autor: Florencia Lucila Zilli
Rok vydání: 2012
Předmět:
Zdroj: Studies on Neotropical Fauna and Environment. 47:61-71
ISSN: 1744-5140
0165-0521
DOI: 10.1080/01650521.2011.645392
Popis: Campsurus nymphs are among the most abundant mayflies in neotropical aquatic habitats. The abundance patterns and secondary production of Campsurus violaceus were analyzed monthly from April 2005 to March 2006 in lakes with different degrees of connectivity in the floodplain of the Middle Paraná River. Significant differences were estimated for the abundance and secondary production of the species among the studied lakes. The patterns in the abundance of nymphs were correlated to substrate characteristics (type of substrate, content of detritus), water transparency, and conductivity of lakes and the variations in the life cycle were related to temperature. Degree of connectivity of lakes was the main factor in determining differences among populations, as it influenced local conditions, finally determining regional dissimilarities in abundance pattern and secondary production for the species. Fil: Zilli, Florencia Lucila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Databáze: OpenAIRE