Figure 1.
Isotopic composition of host and ectoparasite tissues across the study area.
Geographic variation in mean δ15N and δ13C (± Standard Error) values of host tissue and ectoparasite species from 12 Atlantic (A) and Mediterranean (B) Calonectris breeding colonies.
Table 1.
Estimates of δ13C δ15N discrimination factors (Mean difference ± Standard deviation) between the host resource and the ectoparasite tissue for each ectoparasite species and breeding locality.
Figure 2.
Isotopic enrichment in Calonectris ectoparasites.
Mean Δ15N and Δ13C discrimination factors among ectoparasite tissues and host tissues (mean colony values ± Standard Error).