Abstract
Mites of the Brevipalpus genus are economically important due to their role as vectors of plant viruses. Among them, B. yothersi is well studied because it is the recognized main vector of the citrus leprosis virus C (CiLV-C), the causal agent of citrus leprosis, which is one of the most damaging viral diseases in the citrus crops. However, studies of several aspects of the biology of B. yothersi are still scarce, including its embryology. We performed a descriptive embryonic development study of B. yothersi, utilizing light and scanning electron microscope to obtain biological information of this particular phytovirus vector. Distinct events were recorded, such as centering of the nucleus, mitotic divisions for primitive body formation and appendages, as well as the presence of channels inside the egg and their possible association with the respiratory tract. Here we provide the first notes about embryonic development of this important mite vector in the Americas.
Highlights
Flat mites in the genus Brevipalpus Donnadieu (Tenuipalpidae) have a worldwide distribution with more than 300 plant species described as their host (Beard et al 2015)
There is Brevipalpus yothersi Baker that is the main vector of citrus leprosis (CL) disease (Bassanezi et al 2019)
The B. yothersi embryological development was observed for seven days under experimental conditions and the eggs were visible by light microscope (LM) (Figure 1)
Summary
Flat mites in the genus Brevipalpus Donnadieu (Tenuipalpidae) have a worldwide distribution with more than 300 plant species described as their host (Beard et al 2015). Embryological development studies were successfully performed with mites from Tetranychidae and Eriophyoidea family/superfamily (Gotoh et al 1994; Dearden et al 2002; Chetverikov and Desnitskiy 2016) suggesting that it is possible to advance with information to the peculiar flat mites. Due to the current importance of the B. yothersi as biological system and viral vector, the main goal of this study was to provide information about embryonic development using light microscopy and scanning electron microscopy.
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