Article (Scientific journals)
Can mandible morphology help predict feeding habits in Antarctic amphipods?
Michel, Loïc; Nyssen, Fabienne; Dauby, Patrick et al.
2020In Antarctic Science, 32 (6), p. 496-507
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Keywords :
diet analysis; food webs; Peracarida; scanning electron microscopy; Southern Ocean; trophic ecology
Abstract :
[en] In Antarctica, amphipods form a highly diverse group, occupy many different ecological niches and hold an important place in food webs. Here, we aimed to test whether differences in Antarctic amphipod feeding habits were reflected in their mandible morphology, and if mouthpart specialization could be used to describe amphipod trophic ecology. To do so, we compared mandible morphology in nine species spanning seven families and five functional groups (grazers, suspension feeders, generalist predators, specialist predators and scavengers). Mandible morphology adequately depicted some aspects of amphipod trophic ecology, such as the trophic level at which animals feed or their degree of dietary specialization. On the other hand, links between mandible morphology and amphipod diet were seldom unambiguous or straightforward. Similar adaptations were found in distinct functional groups. Conversely, mandible morphology could vary within a single functional group, and phylogenetic effects sometimes complicated the interpretation of form-function relationships. Overall, mandible morphology on its own was generally not sufficient to precisely predict amphipod feeding strategies. However, when combined with other methods (e.g. gut contents, trophic markers), it constitutes a valuable source of information for integrative studies of amphipod ecological diversity in the Southern Ocean.
Research center :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
Disciplines :
Aquatic sciences & oceanology
Zoology
Environmental sciences & ecology
Author, co-author :
Michel, Loïc   ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Département de Biologie, Ecologie et Evolution
Nyssen, Fabienne  
Dauby, Patrick ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Systématique et diversité animale
Verheye, Marie ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanographie biologique
 These authors have contributed equally to this work.
Language :
English
Title :
Can mandible morphology help predict feeding habits in Antarctic amphipods?
Publication date :
December 2020
Journal title :
Antarctic Science
ISSN :
0954-1020
eISSN :
1365-2079
Publisher :
Cambridge University Press, United Kingdom
Volume :
32
Issue :
6
Pages :
496-507
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
vERSO (BR/132/A1/vERSO)
Funders :
Politique Scientifique Fédérale (Belgique) - BELSPO
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 15 August 2020

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