Integrative taxonomy of Zeuxo (Crustacea: Peracarida: Tanaidacea) from Japan, with the description of a new species

Okamoto, Nobuya; Kakui, Keiichi

doi:10.1007/s11756-022-01121-8

Cited by 4 publications

(2 citation statements)

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“…and Neorhodomela aculeata (Kakui et al, 2017a; Hayakawa and Kakui, 2022), and its habitat is essentially the water column. In contrast, Zeuxo molybi is benthic, constructing nests in bottom sediment overlying bedrock (Okamoto and Kakui, 2022). The light conditions are different between these two microhabitats, brighter in the water column and darker in the bottom sediment.…”

Section: Discussionmentioning

confidence: 99%

“…Observations of captive individuals of Zeuxo ezoensis Okamoto, Oya, and Kakui, 2020, which inhabits the surfaces of seaweeds, and Zeuxo molybi Okamoto and Kakui, 2022, which inhabits muddy sediment overlying bedrock, suggested that these species might exhibit different reactions to light. In this study, we investigated whether these two species are phototactic.…”

Section: Introductionmentioning

confidence: 99%

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Phototaxis in Two Shallow-Water Zeuxo Species (Crustacea: Tanaidacea)

Okamoto

Kakui

2023

Zoological Science

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Different crustacean species can differ in their response to light. In Tanaidacea, a small group of aquatic, benthic crustaceans, previous studies suggested that several species may be positively phototactic based on their attraction to nocturnal light traps, but no experimental investigations of phototaxis had been conducted on this group. Here we show experimentally that two species in the genus Zeuxo are phototactic but exhibit opposite reactions to light; Zeuxo ezoensis, which inhabits the blades and stipes of seaweeds, was positively phototactic, whereas Zeuxo molybi, which inhabits muddy sediments overlying bedrock, was negatively phototactic. This differential response may reflect differences in photoenvironment between these species' microhabitats.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%