Table 1 List of the copepod taxa collected in the Taperaçu estuary, Brazil, and their mean (±SD) and relative abundance, and frequency of occurrence during the rainy and dry seasons, and over the study period as a whole
Taxa/periods | Rainy season | Dry season | Annual | FO | |||
|---|---|---|---|---|---|---|---|
Ind m3 ± SD | % | Ind m3 ± SD | % | Ind m3 ± SD | % | ||
Unidentified copepods* | 28.9 ± 87.8 | 0.4 | 16.5 ± 66.0 | 0.7 | 22.7 ± 77.4 | 0.4 | 58.3 |
Acartia (copepodite) | 146.4 ± 537.7 | 1.8 | 0.3 ± 0.9 | <0.1 | 73.3 ± 384.7 | 1.4 | 18.1 |
A. lilljeborgii Giesbrecht, 1889N, E | 709.5 ± 1,286.3 | 8.7 | 750.8 ± 808.3 | 30.8 | 730.1 ± 1,066.9 | 13.8 | 87.5 |
A. tonsa Dana, 1849E,C,O | 905.6 ± 2,400.9 | 11.1 | 119.3 ± 246.9 | 4.9 | 512.4 ± 1,740.2 | 9.7 | 94.4 |
Centropages velificatus (Oliveira, 1947)N,C | 0.0 ± 0.0 | 0.0 | 1.1 ± 2.4 | <0.1 | 0.5 ± 1.8 | <0.1 | 15.3 |
Paracalanus (copepodite) | <0.1 ± 0.2 | <0.1 | 0.1 ± 0.8 | <0.1 | 0.1 ± 0.6 | <0.1 | 2.8 |
P. quasimodo Bowman, 1971C | 86.8 ± 219.5 | 1.1 | 17.5 ± 64.1 | 0.7 | 52.2 ± 164.3 | 1.0 | 61.1 |
Parvocalanus crassirostris (Dahl F., 1894)E | 2.8 ± 11.8 | <0.1 | 0.1 ± 0.4 | <0.1 | 1.4 ± 8.4 | <0.1 | 8.3 |
Calanopia (copepodite) | 0.0 ± 0.0 | 0.0 | 1.2 ± 7.4 | 0.1 | 0.6 ± 5.2 | <0.1 | 1.4 |
C. americana Dahl F., 1894N,C | <0.1 ± 0.1 | <0.1 | 0.1 ± 0.4 | <0.1 | <0.1 ± 0.3 | <0.1 | 4.2 |
Labidocera (copepodite) | 1.1 ± 3.6 | <0.1 | 0.0 ± 0.0 | 0.0 | 0.5 ± 2.6 | <0.1 | 5.6 |
L. fluviatilis Dahl F., 1894N | 6.9 ± 15.5 | 0.1 | 1.5 ± 4.3 | 0.1 | 4.2 ± 11.6 | 0.1 | 20.8 |
Pseudodiaptomus (copepodite) | 195.8 ± 746.9 | 2.4 | 2.5 ± 14.7 | 0.1 | 99.1 ± 533.5 | 1.9 | 12.5 |
P. acutus (Dahl F., 1894)E | 4.8 ± 13.5 | 0.1 | 6.9 ± 17.0 | 0.3 | 5.8 ± 15.3 | 0.1 | 23.6 |
P. marshi Wright S., 1936E | 6,004.6 ± 22,231.6 | 73.8 | 1,418.7 ± 5,621.9 | 58.1 | 3,711.7 ± 16,265.1 | 70.2 | 84.7 |
P. richardi (Dahl F., 1894)E | 5.9 ± 28.1 | <0.1 | 0.8 ± 4.6 | <0.1 | 3.3 ± 20.2 | 0.1 | 12.5 |
Pseudodiaptomus sp. | <0.1 ± 0.1 | <0.1 | 25.1 ± 90.6 | 0.9 | 10.7 ± 64.5 | 0.2 | 5.6 |
Subeucalanus (copepodite) | 2.9 ± 8.2 | <0.1 | 6.4 ± 11.2 | 0.3 | 4.6 ± 9.9 | 0.1 | 34.7 |
S. crassus (Giesbrecht, 1888)O | 0.1 ± 0.8 | <0.1 | 0.3 ± 0.9 | <0.1 | 0.2 ± 0.8 | <0.1 | 6.9 |
S. pileatus (Giesbrecht, 1888)O | 11.7 ± 39.8 | 0.1 | 24.3 ± 31.0 | 1.0 | 18.0 ± 36.0 | 0.3 | 51.4 |
Subeucalanus sp. | <0.1 ± 0.1 | <0.1 | 0.0 ± 0.0 | 0.0 | <0.1 ± 0.1 | <0.1 | 1.4 |
Temora stylifera (Dana, 1849)C, O | 0.0 ± 0.0 | 0.0 | <0.1 ± 0.3 | <0.1 | <0.1 ± 0.2 | <0.1 | 1.4 |
Oithona (copepodite) | 0.0 ± 0.0 | 0.0 | <0.1 ± 0.1 | <0.1 | <0.1 ± 0.1 | <0.1 | 1.4 |
O. hebes Giesbrecht, 1891C,E | 7.1 ± 22.9 | 0.1 | 12.6 ± 38.3 | 0.5 | 9.9 ± 31.5 | 0.2 | 38.9 |
O. oswaldocruzi Oliveira, 1945C,E | 7.7 ± 23.9 | 0.1 | 20.8 ± 64.5 | 0.9 | 14.2 ± 48.7 | 0.3 | 45.8 |
Oithona sp. | 0.1 ± 0.4 | <0.1 | 0.1 ± 0.8 | <0.1 | 0.1 ± 0.6 | <0.1 | 2.8 |
Microsetella (copepodite) | 0.0 ± 0.0 | 0.0 | <0.1 ± 0.1 | <0.1 | <0.1 ± 0.1 | <0.1 | 1.4 |
M. rosea (Dana, 1848)O | 3.0 ± 17.7 | <0.1 | 3.8 ± 16.3 | 0.2 | 3.4 ± 16.9 | 0.1 | 9.7 |
Euterpina (copepodite) | 0.0 ± 0.0 | 0.0 | <0.1 ± 0.2 | <0.1 | <0.1 ± 0.1 | <0.1 | 1.4 |
E. acutifrons (Dana, 1847)C | 0.5 ± 1.8 | <0.1 | 7.5 ± 17.7 | 0.3 | 4.1 ± 13.1 | 0.1 | 25.0 |
Tisbe sp. | 1.2 ± 5.9 | <0.1 | 5.0 ± 16.4 | 0.2 | 3.1 ± 12.4 | 0.1 | 26.4 |
Harpacticoida | 1.1 ± 3.7 | <0.1 | 0.3 ± 1.5 | <0.1 | 0.7 ± 2.8 | <0.1 | 8.3 |
Oncaea sp. | 0.5 ± 2.9 | <0.1 | 0.2 ± 1.1 | <0.1 | 0.4 ± 2.2 | <0.1 | 5.6 |
Total | 8,874.4 ± 37,886.7 | 100 | 2,661.9 ± 9,884.9 | 100 | 11,536.4 ± 47,186.5 | 100 |  |