Variability and genetic structure of Anastrepha ludens Loew (Diptera: Tephritidae) populations from Mexico

Pecina-Quintero, Víctor; Jiménez-Becerril, María Fernanda; Ruíz-Salazar, Régulo; Núñez-Colín, Carlos Alberto; Loera-Gallardo, Jesús; Hernández-Delgado, Sanjuana; Máyek-Pérez, Netzahualcóyotl

doi:10.1007/s42690-020-00117-8

Cited by 2 publications

(6 citation statements)

References 33 publications

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“…This may suggest that all these hosts ( C. sinensis, C. paradisi, C. edulis and M. indica ), as well as other plant species known to be hosts [ 4 ], may represent an environment that supports similar levels of fitness and genetic diversity. Consistent with this, Pecina-Quintero et al [ 25 ] found similar levels of genetic diversity between samples of A. ludens obtained from two different hosts, Casimiroa gregii and Citrus sinensis , in Northeast Mexico using AFLP markers. Genetic differences among hosts were, however, significant in the AMOVA analyses, indicating that host species do have an impact on genetic variation [ 25 ].…”

Section: Discussionsupporting

confidence: 62%

“…Consistent with this, Pecina-Quintero et al [ 25 ] found similar levels of genetic diversity between samples of A. ludens obtained from two different hosts, Casimiroa gregii and Citrus sinensis , in Northeast Mexico using AFLP markers. Genetic differences among hosts were, however, significant in the AMOVA analyses, indicating that host species do have an impact on genetic variation [ 25 ]. In our study, a difference of 13% among hosts was detected, and this contrasts sharply with a 3% difference observed between Casimiroa gregii and Citrus sinensis in Northeast Mexico observed in another study [ 26 ].…”

Section: Discussionsupporting

confidence: 62%

“…Using the same loci as those reported Molina-Neri et al [ 23 ], we found consistently higher levels of heterozygosity ( He = 0.350). Using other markers such as amplified fragment length polymorphism (AFLP), studies of genetic diversity of A. ludens in Northeast Mexico showed He values ranging from 0.28 to 0.76 [ 24 , 25 ]. Using double-digest restriction site-associated DNA sequences (ddRAD-Seq), a study considering samples across the range distribution of the species (Texas, Mexico and Central America) produced He values between 0.126–0.150 (specifically, for samples from Chiapas, the He value was 0.147).…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies, such as that of Molyna-Nery et al [ 23 ], showed that genetic differentiation between geographically distant populations could be attributed to environmental factors such as temperature, but also that interactions with the availability of hosts was always a factor. Pecina-Quintero et al [ 25 ] also reported a relatively high value for Wright’s coefficient of differentiation F st (0.38) associated with habitat fragmentation, genetic drift, or local selection factors such as climate and pest management.…”

Section: Discussionmentioning

confidence: 99%

“…The subpopulations occur within a distribution range corresponding to: (1) Western Mexico, (2) Eastern Mexico/Texas, (3) Guatemala/Belize/Honduras and (4) Costa Rica/Panama [ 6 ]. The Mexican populations in particular have been shown to exhibit moderate population structuring at a broad geographic scale [ 23 ], along with a stronger structuring at a narrower geographic scale [ 24 , 25 ]. However, studies exploring the influence of hosts on the genetic structure of A. ludens from Veracruz, Tamaulipas and Nuevo Léon (Mexico) concluded that they did not find that the structuring was attributable to either the geographic origin or the host [ 26 ], as had been suggested for other Anasptrepha species, specifically A. fraterculus [ 27 ] and A. suspensa [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

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Genetic and Ecological Relationships of Anastrepha ludens (Diptera: Tephritidae) Populations in Southern Mexico

Ruiz-Montoya

Vallejo

Haymer

et al. 2020

Insects

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Knowledge of the influence of evolutionary factors that promote either the differentiation or cohesion of pest insect populations is critical for the improvement of control strategies. Here, we explore the extent to which genetic differentiation occurs between populations of the Mexican fruit fly, Anastrepha ludens, in association with four plant hosts (Citrus sinensis, C. paradisi, Mangifera indica and Casimiroa edulis) in the Soconusco region of Chiapas (Mexico). Using variants from six enzymatic loci, we obtained measures of genetic diversity for three sample arrangements: (1) by sex per locality, (2) by locality and (3) by host. The extent of genetic differentiation in populations was assessed using the Analyses of Molecular Variance (AMOVA) method for each array of samples, and moderate to high levels of genetic variation were observed between the sexes, as well as among localities and host plants. A Bayesian approach was then used to assess any population structure underlying the genetic data we obtained, but this analysis showed no significant structuring due to locality or host plant. We also considered whether the observed genotypic frequencies in male and females matched those expected under a hypothesis of random mating. Here we found significant deviations from expected genotypic frequencies, suggesting that sexual selection is acting on these populations. Overall, our results indicate that sexual selection, along with the presence of some heterogeneity in environments provided by both geographical factors and availability of host plants, has influenced the evolution of pest populations in this region of Mexico. Implications for area-wide pest management strategies are discussed.

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Section: Discussionsupporting

confidence: 62%

Section: Discussionsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Genetic and Ecological Relationships of Anastrepha ludens (Diptera: Tephritidae) Populations in Southern Mexico

Ruiz-Montoya

Vallejo

Haymer

et al. 2020

Insects

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Nuclear genetic diversity and structure of Anastrepha ludens wild populations evidenced by microsatellite markers

et al. 2022

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The Mexican fruit fly, Anastrepha ludens, is an important pest that causes widespread damage to a number of fruit crops in Mexico. The sterile insect technique (SIT) is commonly used for its control. However, the existence of natural barriers can give rise to a population structure in neutral loci and possibly behavioral or adaptive traits that interfere with SIT. For this reason, it is important to understand the genetic diversity and structure of A. ludens populations and to better understand the evolutionary ecology and population processes in view of possible expansions and possible host shifts due to climate change. We genotyped nine nuclear DNA (nDNA) microsatellite loci among fruit fly populations collected from five biogeographic areas within Mexico, namely, the Mexican Plateau, the Northeastern Coastal Plain, the Pacific Coast, the Gulf Coast of Mexico, and the Soconusco, and a laboratory strain. The nuclear genetic diversity was moderate (from He = 0.34 to He = 0.39) within the wild mexfly population. We found that populations were clustered in three genetic groups (K = 3). The diversity and the genetic structure of A. ludens are determined by environmental and geological conditions, as well as local conditions like anthropogenic perturbation, which would produce population expansion and the existence of possible predators that would affect the population density. Gene flow showed recent migration among populations. The laboratory strain showed fewer diversity than the wild samples. Large values of current and ancestral population size suggest high resistance to climatic changes, probably due to biological attributes, such as its polyphagous, multivoltine, and high dispersal characteristics. In particular, ecosystem fragmentation and perturbation as well as the existence of new plant hosts would probably increase the abundance of flies.

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Variability and genetic structure of Anastrepha ludens Loew (Diptera: Tephritidae) populations from Mexico

Cited by 2 publications

References 33 publications

Genetic and Ecological Relationships of Anastrepha ludens (Diptera: Tephritidae) Populations in Southern Mexico

Genetic and Ecological Relationships of Anastrepha ludens (Diptera: Tephritidae) Populations in Southern Mexico

Nuclear genetic diversity and structure of Anastrepha ludens wild populations evidenced by microsatellite markers

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