Patterns of inner chorion structure in Anastrepha (Diptera: Tephritidae) eggs

Figueiredo, Julia Vono Alvarez; Perondini, André Luiz Paranhos; Selivon, Denise

doi:10.1016/j.asd.2016.11.004

Cited by 6 publications

(4 citation statements)

References 32 publications

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“…; Figueiredo et al . ) have shown that the eggshell of dipteran flies also has both an inner and outer meshwork layer, including a middle layer of varying thickness. Among these layers, the meshwork layer holds a continuous film of air, and the middle layer provides the major mechanical strength for maintaining the eggshell.…”

Section: Discussionmentioning

confidence: 99%

“…Arthropod eggshells are an important target for micropatterning studies (Figueiredo et al . ), not just because of the obvious protection it provides for the animal, but also as an identification tool. In particular, various morphometric and morphological studies on mosquito eggs have shown their importance in species identification, species‐specific surveillance systems, and better understanding of the species (Hinton ; Lounibos et al .…”

Section: Introductionmentioning

confidence: 99%

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Structural characterization of the micropatterned egg plastron in the mosquito, Aedes albopictus

Kim

Sun

Bae

et al. 2020

Entomological Research

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Eggs of the Asian tiger mosquito Aedes albopictus are fully covered with an aircovering plastron network that enables them to stay below the surface of the water. Scanning electron microscopy revealed that the chorionic surface was covered with clusters of globular tubercles of different sizes. Histologically, the eggshell provides a typical water-repellent microarchitecture consisting of an outer exochorion, a membranous endochorion and an intermediate pillar layer. The eggshell has a distinct chorionic tubercle that increases the surface area for gas exchange to enhance respiration capacity. In particular, the chorionic wall gives rise to a hexagonal pattern with smooth and elevated boundaries. In A. albopictus, a set of micropatterns for each hexagon was specified, and each central tubercle was surrounded by 20 small peripheral tubercles. Our fine structural analysis revealed that the partitioning of the surface into numerous hexagonal chorionic sculptures is associated with the Voronoi partition (tessellation), based on the distance to a point in a specific area of the plane. Therefore, the micropatterned surface of the mosquito eggshell appears to not only resist wetting by hydrostatic pressure but also provide resistance to lysate deposition by the biofouling process.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural characterization of the micropatterned egg plastron in the mosquito, Aedes albopictus

Kim

Sun

Bae

et al. 2020

Entomological Research

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“…Despite the general pattern of purifying selection, the evidence of positive selection on dec-1 in Tephritidae, particularly among different Anastrepha species, is relevant because of the great diversity of the inner chorion patterns among Anastrepha species, which are much more diverse than those found in other Tephritidae (Murillo and Jirón, 1994;Selivon and Perondini, 1998;Dutra et al, 2011;Figueiredo et al, 2017). Although rapidly evolving genes in general have been associated with sexually selected traits or sexual con ict across different taxa (Swanson and Vacquier, 2002;Clark et al, 2006;Panhuis and Swanson, 2006;Turner and Hoekstra, 2006), adaptive responses to environmental cues can also play an important role (Jagadeeshan and Singh, 2007).…”

Section: Branch Selection Analysismentioning

confidence: 99%

“…This selective pressure may foster rapid gene diversi cation and reproductive incompatibilities (Findlay and Swanson, 2010), similar to sexual selection, sexual con ict, immunity, and protein recognition (Swanson and Vacquier, 2002). The importance of studying egg formation genes among Anastrepha species is reinforced by the fact that chorion morphology is a diagnostic tool that exhibits signi cant variability among Anastrepha species, particularly in distinguishing morphotypes of A. fraterculus (Selivon and Perondini, 1998;Selivon et al, 2004;Figueiredo et al, 2013;Figueiredo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Molecular evolution and genetic diversity of defective chorion 1 in Anastrepha fraterculus and Anastrepha obliqua (Diptera, Tephritidae)

Bisio,

Santos,

Santos

et al. 2024

Preprint

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The family Tephritidae comprises numerous fruit fly species, some of which are economically significant, such as several in the genus Anastrepha. Most pest species in this genus belong to the fraterculus group, characterized by closely related species that are difficult to differentiate due to recent divergence and gene flow. Identifying genetic markers for their study is paramount for understanding the group’s evolution and eventual phytosanitary control. Because there is variation in eggshell morphology among species in the genus, we studied the rapidly evolving defective chorion 1 (dec-1) gene, which is crucial for chorion formation and reproduction. Fragments of dec-1 from two of the most important pest species in the genus, Anastrepha fraterculus and Anastrepha obliqua, were amplified and compared to transcriptome sequences, as well as dec-1 sequences from Anastrepha ludens, which was used for structure prediction. These data revealed three alternative transcripts in A. fraterculus and A. obliqua, consistent with patterns found in other Tephritidae; we obtained orthologous sequences for these other tephritids from NCBI to investigate patterns of selection affecting this gene at different hierarchical levels using different methods. These analyses show that purifying selection has had an important role across the whole gene and throughout its history, but there was evidence of positive and episodic diversifying selection at different levels. Different parts of the gene have shown distinct evolutionary rates, potentially correlating with the diverse proproteins produced by posttranslational changes. This correlation appears evident in certain lineages, including the branch that separates Anastrepha, as well as other internal branches that differentiate species within the genus. Our data showed that this gene shows remarkable variation across its different exons, which has proven to be informative at different evolutionary levels. These changes hold promise not only for studying differentiation in Anastrepha but also for the eventual management of selected pest species.

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Molecular evolution and genetic diversity of defective chorion 1 in Anastrepha fraterculus and Anastrepha obliqua (Diptera, Tephritidae)

de Cássia Bisio,

dos Santos,

Santos

et al. 2024

Dev Genes Evol

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Patterns of inner chorion structure in Anastrepha (Diptera: Tephritidae) eggs

Cited by 6 publications

References 32 publications

Structural characterization of the micropatterned egg plastron in the mosquito, Aedes albopictus

Structural characterization of the micropatterned egg plastron in the mosquito, Aedes albopictus

Molecular evolution and genetic diversity of defective chorion 1 in Anastrepha fraterculus and Anastrepha obliqua (Diptera, Tephritidae)

Molecular evolution and genetic diversity of defective chorion 1 in Anastrepha fraterculus and Anastrepha obliqua (Diptera, Tephritidae)

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