Favareto, L.R., G. Perbiche-Neves, M. Serafim-Júnior & L.P. Sartori. (2009). Selectivity of plankton nets over planktonic Copepoda in two sub-tropical estuaries. Seletividade de redes de plâncton sobre Copepoda planctônicos em dois estuários sub-tropicais. Acta Limnologica Brasiliensia. 21(1):67-77.

410833

Favareto, L.R., G. Perbiche-Neves, M. Serafim-Júnior & L.P. Sartori

2009

21(1):67-77.

Publication

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This study was carried out to evaluate the planktonic copepod assemblages selected by the use of two different mesh sizes (64 and 200 µm) plankton nets, in two sub-tropical Brazilian estuaries (Paranaguá and Guaratuba – PR). Methods: For one year three stations were sampled monthly in each estuary, with 64 and 200 µm plankton nets. Ecological attributes were evaluated as species composition, richness, diversity, equitability and abundance. Results: A total of 30 taxa were recorded, including young and adult individuals. Three taxa occurred only in the 200 µm mesh size net, and only one was exclusive of the 64 µm net. Copepodites and nauplii were frequent and abundant in the 64 µm mesh size net. On the other hand, adult forms were dominant in the 200 µm net. The Oithonidae family dominated the samples from the 64 µm mesh size net, and in some months in the 200 µm mesh size, alternating with Acartidae, Clausocalanidae, and Paracalanidae. Higher richness and diversity were observed in the samples from the 200 µm net, and evenness suggested uniformity in the assemblages of the two nets in most of the studied months. Conclusions: Our results suggest the use of nets of different mesh sizes according to specific purposes and objectives related to the ecological attributes.

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