Calonectris Mathews & Iredale 1915
Calonectris Traditionally, the species of Calonectris were usually placed in the same genus as the other Puffinus shearwaters; the former genus came to be widely recognized only about 50 years after its description, based mostly on the work of Kuroda (1954) (e.g. Alexander et al. 1965). In the final...
| Main Authors: | , |
|---|---|
| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2021
|
| Subjects: | |
| Online Access: | https://zenodo.org/record/4730486 https://doi.org/10.5281/zenodo.4730486 |
| Summary: | Calonectris Traditionally, the species of Calonectris were usually placed in the same genus as the other Puffinus shearwaters; the former genus came to be widely recognized only about 50 years after its description, based mostly on the work of Kuroda (1954) (e.g. Alexander et al. 1965). In the final phylogenetic hypothesis of our study, Calonectris is supported by eight unambiguous synapomorphies, such as the condylus occipitalis nonvisible in lateral view of the skull; the presence of a thin osseous lamina in apertura nasalis ossea, which is shared with Puffinus nativitatis and P. huttoni; and the elliptical shaft of humerus, not flattened as in other species of Puffinus (sensu lato) (characters 24, 34, and 69, respectively); all three of these were also cited by Kuroda (1954). The monophyly of the group, corroborated herein, has also been recovered by previous molecular-based studies, despite the different taxonomic treatments given to the terminal taxa (e.g. Nunn & Stanley 1998; Austin et al. 2004; Penhallurick & Wink 2004; Welch et al. 2014). In our phylogenetic analysis, relationships within the genus Calonectris were almost entirely established by synapomorphies from continuous characters, such as the lengths of wing bones (e.g. characters 9, 10, 11, and 12), and received high support (RBS ≥ 70 for all nodes). Calonectris diomedea and C. borealis are sister taxa to each other, sharing seven synapomorphies from continuous characters. Most molecular phylogenies have included only one or two species of Calonectris as terminal taxa. Ramirez et al. (2010) and Tennyson & Shepherd (2017) included only C. diomedea, whereas some other studies also sequenced C. leucomelas (e.g. Nunn & Stanley 1998; Austin et al. 2004; Pyle et al. 2011; Welch et al. 2014). Heidrich et al. (1998), when assessing relationships of Mediterranean and North Atlantic shearwaters through mtDNA, used both C. diomedea and C. borealis, although borealis was considered a subspecies of C. diomedea. In the present study, C. ... |
|---|