lack of host-dependent genetic structure in ectoparasites of calonectris shearwaters.we compared patterns of mitochondrial dna (mtdna) differentiation in three host-specific lice (halipeurus abnormis, austromenopon echinatum and saemundssonia peusi) and one generalist flea (xenopsylla gratiosa), parasitizing 22 colonies of cory's and cape verde shearwater (calonectris). the shearwater hosts show distinct phylogeographic structure corresponding to the three taxa calonectris d. diomedea, c. d. borealis, and c. edwardsii. the host-specific lice appeared undifferentiated among the t ...200718028307
three new species of the feather mite subfamily ingrassiinae (acariformes: xolalgidae) from shearwaters and petrels (procellariiformes: procellariidae).three new species of the feather mite subfamily ingrassiinae (acariformes: astigmata: xolalgidae) are described from shearwaters and petrels (procellariiformes: procellariidae) in the north-east of atlantic ocean: ingrassia calonectris sp. n. from calonectris borealis (cory) (type host) and calonectris edwardsii (oustalet), ingrassia micronota sp. n. and opetiopoda bulweriae sp. n. from bulweria bulwerii (jardine and selby).201325243277
a new species of the feather mite genus rhinozachvatkinia (acari: avenzoariidae) from calonectris shearwaters (procellariiformes: procellariidae): integrating morphological descriptions with dna barcode data.rhinozachvatkinia calonectris sp. n., a new species of the feather mite genus rhinozachvatkinia mironov, 1989 (avenzoariidae: bonnetellinae), is described from two species of shearwaters in the north-east of the atlantic ocean, calonectris edwardsii (oustalet) (type host) and calonectris borealis (cory) (procellariiformes: procellariidae). we completed the morphological description of this new feather mite species with sequence data on the mitochondrial cytochrome c oxidase subunit i gene fragme ...201424684058
geographic assignment of seabirds to their origin: combining morphologic, genetic, and biogeochemical analyses.longline fisheries, oil spills, and offshore wind farms are some of the major threats increasing seabird mortality at sea, but the impact of these threats on specific populations has been difficult to determine so far. we tested the use of molecular markers, morphometric measures, and stable isotope (delta15n and delta13c) and trace element concentrations in the first primary feather (grown at the end of the breeding period) to assign the geographic origin of calonectris shearwaters. overall, we ...200717708223
the foraging ecology of the endangered cape verde shearwater, a sentinel species for marine conservation off west africa.large marine ecosystems such as the canary current system off west africa sustains high abundance of small pelagic prey, which attracts marine predators. seabirds are top predators often used as biodiversity surrogates and sentinel species of the marine ecosystem health, thus frequently informing marine conservation planning. this study presents the first data on the spatial (gps-loggers) and trophic (stable isotope analysis) ecology of a tropical seabird-the endangered cape verde shearwater cal ...201526436804
phylogeography of the calonectris shearwaters using molecular and morphometric data.we investigated phylogenetic relationships and the biogeographic history of the calonectris species complex, using both molecular and biometric data from one population of the cape verde shearwater calonectris edwardsii (cape verde islands), one from the streaked shearwater c. leucomelas (western pacific ocean) and 26 from cory's shearwater populations distributed across the atlantic (c. d. borealis) and the mediterranean (c. d. diomedea). the streaked shearwater appeared as the most basal and d ...200616814569
intricate trophic links between threatened vertebrates confined to a small island in the atlantic ocean.trophic networks in small isolated islands are in a fragile balance, and their disturbance can easily contribute toward the extinction vortex of species. here, we show, in a small atlantic island (raso) in the cabo verde archipelago, using dna metabarcoding, the extent of trophic dependence of the endangered giant wall gecko tarentola gigas on endemic populations of vertebrates, including one of the rarest bird species of the world, the critically endangered raso lark alauda razae. we found that ...201931031960
inter-annual changes in oceanic conditions drives spatial and trophic consistency of a tropical marine predator.pelagic seabirds exhibit plasticity in foraging characteristics in relation to oceanographic conditions. this should be particularly relevant in tropical marine environments where food resources are naturally more unpredictable. we studied how inter-annual variations (2013-2018) in tropical oceanographic conditions (driver of oceanic productivity) can influence the spatial and trophic ecology of cape verde shearwater (calonectris edwardsii) during the breeding season. during years of poor oceano ...202033068920
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