PMID- 36652888
OWN - NLM
STAT- MEDLINE
DCOM- 20230214
LR  - 20230214
IS  - 1879-0291 (Electronic)
IS  - 0141-1136 (Linking)
VI  - 185
DP  - 2023 Mar
TI  - Trophic ecology of three marine polychaete species: Evidence from laboratory 
      experiments using stable isotope ((15)N, (13)C), fatty acid (NLFA) analyses, and 
      C and N stoichiometry.
PG  - 105878
LID - S0141-1136(23)00006-5 [pii]
LID - 10.1016/j.marenvres.2023.105878 [doi]
AB  - Marine polychaetes are a highly diverse taxon with a large variety of different 
      feeding modes. A proper identification of the different diets of polychaete 
      species and their trophic position in the food web is crucial for understanding 
      their interactions in marine ecosystems as well as marine community dynamics. 
      Since gut content analyses and feeding experiments are difficult to conduct in 
      marine habitats, other methods using biochemical tracers may contribute to a 
      better understanding of the trophic ecology of marine polychaetes. Here, we 
      conducted laboratory experiments and used a combination of stable isotope ((13)C, 
      (15)N) and neutral lipid fatty acid (NLFA) analyses, as well as C and N 
      stoichiometry to determine the feeding habits of widely distributed marine 
      polychaete species, such as Eurythoe complanata, Platynereis massiliensis, and 
      Syllis malaquini. Additionally, the impact of starvation on the stable isotope 
      signatures was analyzed. Our data show that the trophic ecology of the three 
      species differs from each other. Stable isotope and fatty acid analyses indicate 
      that (a) E. complanata is mainly feeding on algae, cyanobacteria and to a lesser 
      extent on fungi, that (b) S. malaquini is mainly feeding on algae and bacteria 
      and that (c) P. massiliensis is mainly feeding on algae, especially diatoms. An 
      analysis of the C:N ratio of the respective annelid species and their potential 
      food sources corroborated these results. The combination of stable isotope 
      signatures, fatty acid markers and stoichiometry of carbon and nitrogen is a 
      useful tool to identify the diet and trophic position of marine polychaete 
      species and provides more results about their feeding habits and their position 
      in marine food webs.
CI  - Copyright (c) 2023 Elsevier Ltd. All rights reserved.
FAU - Engel, Nele
AU  - Engel N
AD  - Dep. Animal Evolution and Biodiversity, JFB Institute for Zoology and 
      Anthropology, Georg-August-University Gottingen, Untere Karspule 2, 37073, 
      Gottingen, Germany. Electronic address: nelengel@uni-bremen.de.
FAU - Aguado, M Teresa
AU  - Aguado MT
AD  - Dep. Animal Evolution and Biodiversity, JFB Institute for Zoology and 
      Anthropology, Georg-August-University Gottingen, Untere Karspule 2, 37073, 
      Gottingen, Germany.
FAU - Maraun, Mark
AU  - Maraun M
AD  - Dep. Animal Ecology, JFB Institute of Zoology and Anthropology, 
      Georg-August-University Gottingen, Untere Karspule 2, 37073, Gottingen, Germany.
LA  - eng
PT  - Journal Article
DEP - 20230112
PL  - England
TA  - Mar Environ Res
JT  - Marine environmental research
JID - 9882895
RN  - 0 (Fatty Acids)
RN  - 0 (Isotopes)
RN  - 0 (Nitrogen Isotopes)
RN  - 0 (Carbon Isotopes)
SB  - IM
MH  - *Ecosystem
MH  - *Fatty Acids
MH  - Ecology
MH  - Food Chain
MH  - Isotopes/analysis
MH  - Nitrogen Isotopes/analysis
MH  - Carbon Isotopes/analysis
OTO - NOTNLM
OT  - Eurythoe complanata
OT  - Food web
OT  - Marine ecology
OT  - Platynereis massiliensis
OT  - Syllis malaquini
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/01/19 06:00
MHDA- 2023/02/15 06:00
CRDT- 2023/01/18 18:13
PHST- 2022/09/25 00:00 [received]
PHST- 2022/12/23 00:00 [revised]
PHST- 2023/01/10 00:00 [accepted]
PHST- 2023/01/19 06:00 [pubmed]
PHST- 2023/02/15 06:00 [medline]
PHST- 2023/01/18 18:13 [entrez]
AID - S0141-1136(23)00006-5 [pii]
AID - 10.1016/j.marenvres.2023.105878 [doi]
PST - ppublish
SO  - Mar Environ Res. 2023 Mar;185:105878. doi: 10.1016/j.marenvres.2023.105878. Epub 
      2023 Jan 12.