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. 2022 Jun 30;67(8):1647–1669. doi: 10.1002/lno.12101

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© 2022 The Authors. Limnology and Oceanography published by Wiley Periodicals LLC on behalf of Association for the Sciences of Limnology and Oceanography.

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Fig. 2 — Example of plankton images on which traits can be identified. (a–h) Diatoms, (i–v) copepods, (w–δ) other taxa. (a–c) Chains of Chaetoceros spp. of different sizes (Scripps Pier Cam [SPC]); note the long spines on (c). (d) Sexual stage of Guinardia flaccida (Imaging FlowCytobot [IFCB]). (e) Dinoflagellate consuming a diatom chain (Guinardia delicatula) by external digestion in a feeding veil (pallium) (IFCB). (f) Guinardia delicatula infected with parasite (first arrow) or as an empty frustule (second arrow) [IFCB]. (g) Ditylum brightwellii cell dividing (IFCB). (h) Coscinodiscophycidae (centric diatoms) containing various amounts of pigments (Planktoscope). (i) Nauplius stage of a crustacean (ZooScan), (j–m) calanoid copepods (Underwater Vision Profiler 5), note the full gut (arrow) and active posture with antennae deployed on (j), the pigmented (dark) body parts on (j–l), the lipid sac (arrow) and resting posture, with antennae along the body on (l), and the curved antennae (arrow) associated with a jump of the copepod on (m). (n) Immature (top) and mature (bottom, with visible oocytes—arrow) female of Calanus hyperboreus (Lightframe On‐sight Key species Investigation [LOKI]). (o) Gaetanus brevispinus displaying many sensory setae on its antennae and a well visible gut (arrow) (LOKI). (p) Another copepod with well visible setae and two egg sacs (arrows) (SPC). (q) Copepod associated with (possibly feeding on) a marine snow particle (ZooGlider). (r) Microsetella sp. displaying many spines and intense coloration, likely from its gut content (Planktoscope). (s) Calanoid copepod with parasite dinoflagellates (arrow) (ZooCAM). (t) Male (with geniculate antennae—arrow, left) and female (with bulging genital segment—arrow, right) of Centropages sp. (ZooCAM). (u) Oncaea mating [SPC]. (v) Empty copepod carcass or molt (ZooScan). (w) Doliolid budding (ISIIS). (x) Salp with an amphipod inside (arrow) (UVP). (y) Transparent Doliolid (SPC). (z) A few solitary Rhizaria, family Aulospheridae (ZooGlider), to be contrasted with (δ). (α) Foraminifera with long cell extensions (UVP). (β) Pteropod (dark) with part of its mucus net deployed (gray). (ɣ) Ctenophore, family Mertensiidae, with very long fishing tentacles deployed (ISIIS). (δ) A colonial Rhizaria, order Collodaria (ZooGlider).