Calanus the cannibal

• Recent modelling efforts have suggested that cannibalism on eggs and young nauplii is an important factor controlling the population dynamics of Calanus. We measured cannibalistic feeding rates on eggs and nauplii of Calanus helgolandicus in the laboratory. Clearance rates on nauplii were similar to102 mL ind.(-1) day(-1), while generally higher on eggs (320 mL ind.(-1) day(-1)). Female starvation did not affect ingestion rates of eggs. We discuss our results in light of published model predictions, cannibalistic feeding rates of other copepods, and field distributions of Calanus developmental stages.

Ämnesord

NATURVETENSKAP  -- Biologi -- Ekologi (hsv//swe)

NATURAL SCIENCES  -- Biological Sciences -- Ecology (hsv//eng)

NATURVETENSKAP  -- Biologi (hsv//swe)

NATURAL SCIENCES  -- Biological Sciences (hsv//eng)

Nyckelord

planktonic marine copepod

predatory feeding-behavior

stage-specific mortality

tortanus-discaudatus

euchaeta-elongata

oithona-similis

georges bank

prey

nauplii

finmarchicus

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)