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Abstract
We studied species diversity and genetic variation among populations of Brevipalpus mites from four species of citrus host plants. We sampled mites on orange, lime, grapefruit and mandarin trees from orchards at six localities distributed in the five most important citrus producing states in Mexico. Genetic variation among citrus host plants and localities were assessed by analysis of nucleotide sequence data from fragments of the mitochondrial cytochrome oxidase subunit I (COI). Both Brevipalpus yothersi and B. californicus were found at these sites, and B. yothersi was the most abundant species found on all citrus species and in all localities sampled. B. californicus was found mainly on orange and mandarin and only in two of the states sampled. AMOVA and haplotype network analyses revealed no correlation between B. yothersi genetic population structure and geographical origin or citrus host plant species. Considering that a previous study reported greater genetic diversity in B. yothersi populations from Brazil than we observed in Mexico, we discuss the possibility that the Mexican populations may have originated in the southern region of America.
Highlights
Brevipalpus Donnadieu is the most economically important mite genus within the family Tenuipalpidae [1]
All sequences were truncated to 362 bp for B. yothersi and to 427 bp for B. californicus
Our results confirm the presence of B. yothersi in orchards from the five Mexican states where samples were collected
Summary
Brevipalpus Donnadieu is the most economically important mite genus within the family Tenuipalpidae [1]. Brevipalpus contains more than 300 species that have a worldwide distribution [2, 3]. Brevipalpus mites are commonly parthenogenetic (females producing females) and males are only rarely found in some species [4]. Most Brevipalpus species are economically important because they feed on agricultural crops and some of them transmit viruses to host plants, including Citrus sinensis (L.) Osbeck [5,6,7], Coffea arabica L. (Gentianales: Rubiaceae) [8], Passiflora edulis Sims (Malpighiales: Passifloraceae) [9, 10] and some ornamental species in the genera Angraecum, Diplocaulobium, Stanhopea, Miltonia, Hormidium [11, 12], Xylobium, Oncidium, Trichopilia [13] and Cymbidium [14]. Brevipalpus phoenicis s.l. Geijskes, PLOS ONE | DOI:10.1371/journal.pone.0164552. PLOS ONE | DOI:10.1371/journal.pone.0164552 October 13, 2016
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