Sea scavengers3/18/2023 Squid experiments incited higher consumption rates and scavenger diversity, but lower maximum abundances than similar experiments in the North Atlantic. The jellyfish bait was consumed 7.6 times slower than squid (jellyfish: 171 g d −1, squid: 1,294 g d −1), and almost three times slower than during similar experiments in the North Atlantic. Nine additional scavenger taxa were identified in total, including Scopelocheirus and stegocephalid amphipods, various crustaceans and the gastropod Mohnia. Image analysis showed that the amphipod Eurythenes gryllus arrived within minutes and was the main scavenger on squid (Max N = 166 individuals) while it was almost absent (Max N = 3 individuals) on jellyfish. Squid (Loligo vulgaris) and jellyfish (Periphylla periphylla) were used as bait. Baited free fall landers were equipped with a time-lapse camera (n = 5) and traps (n = 4) to document and capture scavengers. To investigate if scavenging responses in the Arctic deep sea differ between medium-sized food fall species we performed experiments in the Fram Strait at ∼2500 m depth. The Arctic Ocean is known for rapid environmental change and strong benthic-pelagic coupling. Consequently, little is known about scavenging communities associated with invertebrate food falls. Sinking carcasses (food falls) from jellyfish and squid contribute to this nutrient flux, but natural medium-sized food falls are rarely observed. Despite a small sample size of our experiments, differences in consumption rates, scavenger diversity and successional stages between food falls were apparent supporting that scavenging response depends on carcass species.Ībstract = "Deep-sea benthic communities depend on food that reaches the seafloor from the overlying water column as well as from in-situ autotrophic production. −1), and almost three times slower than during similar experiments in the North Atlantic. The jellyfish bait was consumed 7.6 times slower than squid (jellyfish: 171 g d N = 166 individuals) while it was almost absent (Max Image analysis showed that the amphipod Eurythenes gryllus arrived within minutes and was the main scavenger on squid (Max ![]() ![]() Deep-sea benthic communities depend on food that reaches the seafloor from the overlying water column as well as from in-situ autotrophic production.
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