Consumption rates of Antarctic scavenging amphipods on different food items measured in ex situ feeding trials (Austral summer 2014/2015 and 2016) ...

• Main Author: Seefeldt, Meike Anna
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2017
• Subjects: Impact of climate induced glacier melt on marine coastal systems, Antarctica IMCOAST/IMCONet; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarctic; Arctic; Austral; Dolores; Southern Ocean; Antarc*; Antarctica; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.883691; https://doi.pangaea.de/10.1594/PANGAEA.883691

Scavenger guilds are composed of a variety of species, co-existing in the same habitat and sharing the same niche in the food web. Niche partitioning among them can manifest in different feeding strategies, e.g. during carcass feeding. In the bentho-pelagic realm of the Southern Ocean, scavenging amphipods (Lysianassoidea) are ubiquitous and occupy a central role in decomposition processes. Here we address the question whether scavenging lysianassoid amphipods employ different feeding strategies during carcass feeding, and whether synergistic feeding activities may influence carcass decomposition. To this end, we compared the relatively large species Waldeckia obesa with the small species Cheirimedon femoratus, Hippomedon kergueleni, and Orchomenella rotundifrons during fish carcass feeding (Notothenia spp.). The experimental approach combined ex situ feeding experiments, behavioural observations, and scanning electron microscopic analyses of mandibles. Furthermore, we aimed to detect ecological drivers for ... : Supplement to: Seefeldt, Meike Anna; Campana, Gabriela L; Deregibus, Dolores; Quartino, Maria Liliana; Abele, Doris; Tollrian, R; Held, Christoph (2017): Different feeding strategies in Antarctic scavenging amphipods and their implications for colonisation success in times of retreating glaciers. Frontiers in Zoology, 14, 59 ...