A biodiversity survey of scavenging amphipods in a proposed marine protected area: the Filchner area in the Weddell Sea, Antarctica

Abstract

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A vast icefish breeding colony discovered in the Antarctic

“…Dead female carcasses were previously observed close to individual fish nests at the extreme south of the Filchner Trough and hypothesized to be associated with the annual breeding cycle of the fish, providing food for vertically migrating scavenging amphipods. 2,4,31 Presumably, the higher nest density at this northerly Filchner Trough breeding site results in a greater periodic flux of carcasses for the local scavenging community (Table S3). During the current survey, only occasional amphipods were observed in association with carcasses.…”

Detecting the invisible through DNA metabarcoding: The role of gelatinous taxa in the diet of two demersal Antarctic key stone fish species (Notothenioidei)

“…Hyperiid amphipods have been described as symbionts of GZP and this association is often specific, involving salps, siphonophores, scyphozoans, and ctenophores (Madin & Harbison, 1977; Ohtsuka et al., 2009). This is the case of the Vibilia species that were registered in this study in the diet of both nototheniiids (see Table 1), which are exclusively associated with salps, and a single salp can be colonized by many adult amphipods (Havermans et al., 2017). Therefore, GZP and particularly salps, may represent prey aggregating systems for predators targeting their more lipid‐rich crustacean symbionts, which may be one of the reasons that explains the presence of salps in the diet of predators.…”

“…Hyperiid amphipods have been described as symbionts of GZP and this association is often specific, involving salps, siphonophores, scyphozoans, and ctenophores (Madin & Harbison, 1977;Ohtsuka et al, 2009). This is the case of the Vibilia species that were registered in this study in the diet of both nototheniiids (see Table 1), which are exclusively associated with salps, and a single salp can be colonized by many adult amphipods (Havermans et al, 2017).…”

On Dilemmas and Solutions for the Issues of High Seas Marine Protected Areas During the BBNJ Negotiation

“…The African Group, supported by the EU, called for global-level, consensus-based decisionmaking on ABMTs (Area-Based Management Tools) or MPAs (Gonson et al, 2017;Nouaim et al, 2019). However, Australia preferred a regional action-oriented process, including regional decision-making and Norway, supported RFMOs and the ISA designating and implementing MPAs (Havermans et al, 2018). Moreover, the Russian Federation opposed the creation of a new global mechanism for creating ABMTs and Norway noted lack of consensus on creating a new organization for establishing ABMTs during the fourth session of the preparatory committee (Hughes and Grant, 2017).…”