Abstract:
:The Morato's Digger Toad, Proceratophrys moratoi, is a critically endangered toad species with a marked population decline in southern Brazilian Cerrado. Despite this, new populations are being discovered, primarily in the northern part of the distribution range, which raises a number of questions with regard to the conservation status of the species. The present study analyzed the genetic diversity of the species based on microsatellite markers. Our findings permitted the identification of two distinct management units. We found profound genetic structuring between the southern populations, on the left margin of the Tietê River, and all other populations. A marked reduction was observed in the contemporary gene flow among the central populations that are most affected by anthropogenic impacts, such as extensive sugar cane plantations, which presumably decreases habitat connectivity. The results indicated reduced diversity in the southern populations which, combined with a smaller effective population size, may make these populations more susceptible to extinction. We recommend the reclassification of P. moratoi as vulnerable and the establishment of a special protection program for the southern populations. Our results provide important insights about the local extinction of southern populations of this toad.
journal_name
Genet Mol Bioljournal_title
Genetics and molecular biologyauthors
Arruda MP,Costa WP,Recco-Pimentel SMdoi
10.1590/1678-4685-gmb-2016-0025subject
Has Abstractpub_date
2017-04-01 00:00:00pages
502-514issue
2eissn
1415-4757issn
1678-4685pii
S1415-47572017005016101journal_volume
40pub_type
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