2022
DOI: 10.1093/icb/icac089
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Oxygenation-Controlled Collective Dynamics in Aquatic Worm Blobs

Abstract: Many organisms utilize group aggregation as a method for survival. The freshwater oligochaete, Lumbriculus variegatus (California blackworms) form tightly entangled structures, or worm “blobs”, that have adapted to survive in extremely low levels of dissolved oxygen (DO). Individual blackworms adapt to hypoxic environments through respiration via their mucous body wall and posterior ciliated hindgut, which they wave above them. However, the change in collective behavior at different levels of DO is not known. … Show more

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Cited by 14 publications
(22 citation statements)
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“…For example, according to Tuazon, et. al, worm blobs show less activity and less structural exposed surface area in high DO (>8 mg/L) as opposed to hypoxic conditions (<2 mg/L) 42 . Furthermore, worm blobs in high DO shows higher internal mechanical stress, which was demonstrated by lifting worm blobs using a 3D serrated endpiece (Fig.…”
Section: Biological Experimentsmentioning
confidence: 94%
See 2 more Smart Citations
“…For example, according to Tuazon, et. al, worm blobs show less activity and less structural exposed surface area in high DO (>8 mg/L) as opposed to hypoxic conditions (<2 mg/L) 42 . Furthermore, worm blobs in high DO shows higher internal mechanical stress, which was demonstrated by lifting worm blobs using a 3D serrated endpiece (Fig.…”
Section: Biological Experimentsmentioning
confidence: 94%
“…We purchased, reared, and habituated blackworms as described in Tuazon, et al The experimental setup and data analysis is also the same 42 . For the toppling experiment, blackworms were placed in a 250 mL cell culture flask with 100 mL of filtered water.…”
Section: Animalsmentioning
confidence: 99%
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“…2.2.1 Animals. We purchased, reared, and habituated blackworms as described in Tuazon, et al 42 Using blackworms for experiments does not require approval by an institutional animal care and use committee (IACUC).…”
Section: Comparing Multibody Simulations To Naturementioning
confidence: 99%
“…We compare some of these properties to biological experiment using California blackworms (Lumbriculus variegatus), whose collectives demonstrate a non-trivial macroscopic rheological analogue with features and properties from microscopic entanglement. 4,32,42 2 Materials and methods…”
Section: Introductionmentioning
confidence: 99%