Crocidura solita

COMPARISONS: For comparisons to most species, see the Crocidura ordinaria comparisons section above. Compared to C. ordinaria, the pelage is less dense (i. e., shorter hairs on the dorsum) and both the pelage and feet are paler on average and the body is less stocky (fig. 17). The skull of C. solita is slightly smaller, and it is also narrower both absolutely and relative to skull length (figs. 10, 42), with a narrower palate and less robust dentition (table 14). The suture between the squamosal and parietal bones is often open, leaving a long slit in C. solita, but this suture is usually closed in C. ordinaria.

Sumber: Fourteen New, Endemic Species Of Shrew (Genus Crocidura) From Sulawesi Reveal A Spectacular Island Radiation

LSID: urn: lsid: zoobank. org: act: B 8 B 27 A 48 - E 1 C 7 - 47 F 1 - B 0 B 8 - 938722284 C 32

Sumber: Fourteen New, Endemic Species Of Shrew (Genus Crocidura) From Sulawesi Reveal A Spectacular Island Radiation

nuclear exons also inferred reciprocal paraphyly for this species pair (supplementary data S 6). We tested species delimitation models with BPP between Crocidura solita and C. ordinaria using a dataset that included 64 C. solita and 22 C. ordinaria sampled from across their ranges. The alignment of five exons is 82 % complete. All analyses of this dataset supported species delimitation with 1.0 posterior probability. Overall, we interpret the combination of subtle morphological differences (weak evidence), deep mitochondrial divergence in the face of syntopy (strong evidence), and our BPP results (modest evidence) as supporting species distinction. We conclude that the paraphyly in our UCE inferences is most likely the result of incomplete lineage sorting and ancestral polymorphism. In coming to this conclusion, we are admittedly leaning heavily on mitochondrial data. However, the great differences between the mitochondrial sequences where the two species cooccur provides strong evidence for differentiation, at least between females. If these specimens represented a single species, we presume that any substantive gene flow would lead to one of the divergent mitochondrial types being favored, either because it is independently superior to the other, or because it is superior in its integrative functioning with the relevant parts of the nuclear genome (sensu Sloan et al., 2017; Hill, 2019). Mitochondria are foundational to energy metab- olism; viewing them as a neutrally evolving locus would ignore their functional importance and extensive interactions with nuclear gene products (Nabholz et al., 2008; Lane, 2011; Sloan et al., 2017; Tobler et al., 2019). Although many cases of mitochondrial divergence within species have been documented, they rarely involve sympatry of the divergent mitochondrial types (but see Wayne et al., 1990; Morgan-Richards et al., 2017), and far more often than not, mitochondrial divergence is consistent with species limits (Hebert et al., 2003; Monaghan et al., 2005; Esselstyn et al., 2012 a; Cao et al., 2016). Taking in all the evidence, we believe these two sets of samples represent independently evolving populations that should be recognized as species despite the limited evidence for phenotypic or nDNA differentiation.