Mesh selection of copepodite and nauplius stages of four calanoid copepod species
High-speed plankton nets, using mesh sizes of 61, 90, 124,190 and 270 µn, were deployed in the North Sea to catch Calanus spp., Pseudocalanus minutus , Paracalanus parvus and Temora longicomis . These species were identified to their nauplii, copepodite and adult stages, and the numbers caught in ea...
| Published in: | Journal of Plankton Research |
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| Main Authors: | , |
| Format: | Text |
| Language: | English |
| Published: |
Oxford University Press
1991
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| Subjects: | |
| Online Access: | http://plankt.oxfordjournals.org/cgi/content/short/13/3/661 https://doi.org/10.1093/plankt/13.3.661 |
| Summary: | High-speed plankton nets, using mesh sizes of 61, 90, 124,190 and 270 µn, were deployed in the North Sea to catch Calanus spp., Pseudocalanus minutus , Paracalanus parvus and Temora longicomis . These species were identified to their nauplii, copepodite and adult stages, and the numbers caught in each stage were converted to numbers m−3 seawater filtered. The width and length of a representative sample of each stage was measured, and the proportion caught by the different mesh sizes is presented. The selection pattern was described by a mathematical model, which showed that a mesh size of 75% of the copepod carapace width catches ∼95% of the individuals of that size present in the seawater. Some recommendations for mesh sizes required to sample copepods are given. |
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