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Distribution Of Bipinnaria And Pilidium In Relation To Physical Structure And Uv-B Light In The Water Column Off Anvers Island, Antarctica, I. Bosch, William Jaeckle, Deneb Karentz
Distribution Of Bipinnaria And Pilidium In Relation To Physical Structure And Uv-B Light In The Water Column Off Anvers Island, Antarctica, I. Bosch, William Jaeckle, Deneb Karentz
William Jaeckle
Feeding larvae of Antarctic bottom invertebrates have proven to be scarce in the plankton and consequently our knowledge of their ecology is limited. We collected bipinnaria larvae assignable to the genus Odontaster and several types of pilidium larvae of nemertean worms in quantitative net tows taken during the austral spring and summer 1997-1998 and considered their distribution with respect to the density stratification of the water column and the potential exposure to UV-B (λ = 308 nm). The average number of pilidium and bipinnaria larvae in the upper 40 m of the water column was 0.5 ± 1.0 per m3 …