1
|
Amat E, Gómez GF, López-Rubio A, Gómez-Piñerez LM, Albertino Rafael J. A short fragment of mitochondrial DNA for the taxonomic identification of blow flies (Diptera: Calliphoridae) in northwestern South America. JOURNAL OF MEDICAL ENTOMOLOGY 2023; 60:931-943. [PMID: 37467349 DOI: 10.1093/jme/tjad092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 06/08/2023] [Accepted: 06/29/2023] [Indexed: 07/21/2023]
Abstract
Blow flies are of medical, sanitary, veterinary, and forensic importance. Their accurate taxonomic identification is essential for their use in applied research. However, neotropical fauna has not been completely studied or described, and taxa identification without the required training is a difficult task. Additionally, the current morphological keys are not fitting to all extant taxa. Molecular-based approaches are widely used to overcome these issues, including the standard 5' COI barcode fragment (~650 base pairs [bp]) for identification at the species level. Here, a shorter sequence of 5' COI fragment (~342 bp) was assessed for the identification of 28 blow fly species inhabiting the northwest of South America. One tree-based (the generalized mixed Yule-coalescent-GMYC) and 3 distance-based approaches (automatic barcode gap discover - ABGD, the best close match - BCM, and the nearest neighbor - NN) analyses were performed. Noticeably, the amplification and sequencing of samples that had been preserved for up to 57 years were successful. The tree topology assigned 113 sequences to a specific taxon (70% effectiveness), while the distance approach assigned to 95 (59% effectiveness). The short fragment allowed the molecular identification of 19 species (60% of neotropical species except for the Lucilia species and Hemilucilia semidiaphana). According to these findings, the taxonomic and faunistic considerations of the blow fly fauna were provided. Overall, the short fragment approach constitutes an optimal species confirmation tool for the most common blow flies in northwestern South America.
Collapse
Affiliation(s)
- Eduardo Amat
- Grupo Bioforense, Facultad de Derecho y Ciencias Forenses, Tecnológico de Antioquia, Institución Universitaria, Calle 78B No. 72A-220, Medellín, Colombia
- Programa de Pós-graduação em Entomologia - Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, INPA, Manaus, Amazonas, Brazil
| | - Giovan F Gómez
- Grupo Bioforense, Facultad de Derecho y Ciencias Forenses, Tecnológico de Antioquia, Institución Universitaria, Calle 78B No. 72A-220, Medellín, Colombia
- Dirección Académica, Escuela de Pregrados, Universidad Nacional de Colombia Sede de La Paz, La Paz, Cesar, Colombia
| | - Andrés López-Rubio
- Grupo Bioforense, Facultad de Derecho y Ciencias Forenses, Tecnológico de Antioquia, Institución Universitaria, Calle 78B No. 72A-220, Medellín, Colombia
| | - Luz M Gómez-Piñerez
- Grupo Bioforense, Facultad de Derecho y Ciencias Forenses, Tecnológico de Antioquia, Institución Universitaria, Calle 78B No. 72A-220, Medellín, Colombia
| | - Jose Albertino Rafael
- Programa de Pós-graduação em Entomologia - Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, INPA, Manaus, Amazonas, Brazil
| |
Collapse
|
2
|
Barrett TA, Yuan FL, Garraway E. Distinguishing Four Calliphoridae Species (Diptera) from Jamaica Using the Cephalopharyngeal Skeleton: Application to Forensic Investigations. NEOTROPICAL ENTOMOLOGY 2022; 51:830-839. [PMID: 36331802 DOI: 10.1007/s13744-022-00993-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 08/22/2022] [Indexed: 06/16/2023]
Abstract
Flies of the family Calliphoridae, commonly called blow flies, are important in the decomposition process. Knowledge on their succession pattern on corpses, species identification and the duration of their life cycle stages can be useful in forensic investigations especially when estimating the post-mortem interval. We performed linear-based morphometrics on the cephalopharyngeal skeleton of four blow fly species found in Jamaica to distinguish species and determine larval development stage. We collected eggs from pigs' heads used as bait in the field and conducted rearing exercises in the laboratory. We used the internal skeletonized structure, the cephalopharyngeal skeleton, to develop a practical and efficient method for species identification. For the first instar, we found species can be differentiated using all the measurements analysed in the study. We found that the mouth hook length may be useful in distinguishing larvae in the second instar. For the larvae in the third instar, the whole length of the skeleton, from mouth hook to length of the dorsal cornue, may be useful for separating species. We provide information on the cephalopharyngeal skeleton of Lucilia lucigerens (James), a blow fly species endemic to Jamaica, for the first time. Our work provides relevant information that could be utilized for species identification and life stage determination if fly evidence is to be incorporated in forensic investigations in Jamaica.
Collapse
Affiliation(s)
- Taneisha Aneika Barrett
- School of Biological Sciences, The Univ of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, People's Republic of China.
- Dept of Life Sciences, The Univ of the West Indies, Mona, Jamaica.
| | - Félix Landry Yuan
- School of Biological Sciences, The Univ of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, People's Republic of China
| | - Eric Garraway
- Dept of Life Sciences, The Univ of the West Indies, Mona, Jamaica
| |
Collapse
|
3
|
Zhai X, Yang M, Zhang W, Tuerxun A, Mo Y. Mitochondrial and nuclear DNA-based identification of some forensically important calliphoridae (diptera) in Luoyang of China. JOURNAL OF FORENSIC SCIENCE AND MEDICINE 2022. [DOI: 10.4103/jfsm.jfsm_3_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
4
|
Disruption of the odorant coreceptor Orco impairs foraging and host finding behaviors in the New World screwworm fly. Sci Rep 2021; 11:11379. [PMID: 34059738 PMCID: PMC8167109 DOI: 10.1038/s41598-021-90649-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 05/12/2021] [Indexed: 12/03/2022] Open
Abstract
The evolution of obligate ectoparasitism in blowflies (Diptera: Calliphoridae) has intrigued scientists for over a century, and surprisingly, the genetics underlying this lifestyle remain largely unknown. Blowflies use odors to locate food and oviposition sites; therefore, olfaction might have played a central role in niche specialization within the group. In insects, the coreceptor Orco is a required partner for all odorant receptors (ORs), a major gene family involved in olfactory-evoked behaviors. Hence, we characterized the Orco gene in the New World screwworm, Cochliomyia hominivorax, a blowfly that is an obligate ectoparasite of warm-blooded animals. In contrast, most of the closely related blowflies are scavengers that lay their eggs on dead animals. We show that the screwworm Orco orthologue (ChomOrco) is highly conserved within Diptera, showing signals of strong purifying selection. Expression of ChomOrco is broadly detectable in chemosensory appendages, and is related to morphological, developmental, and behavioral aspects of the screwworm biology. We used CRISPR/Cas9 to disrupt ChomOrco and evaluate the consequences of losing the OR function on screwworm behavior. In two-choice assays, Orco mutants displayed an impaired response to floral-like and animal host-associated odors, suggesting that OR-mediated olfaction is involved in foraging and host-seeking behaviors in C. hominivorax. These results broaden our understanding of the chemoreception basis of niche occupancy by blowflies.
Collapse
|
5
|
de la Fuente AM, Caparrós N, Mora-Rodríguez JM, Molina M, Aleix-Mata G, Velarde R, Fidalgo LE, López-Beceiro AM, Lorite P, Boos M, Faure E, Pérez JM, Sánchez A. Characterization of New Molecular Markers of Three Botflies Parasitizing Cervid Hosts. JOURNAL OF MEDICAL ENTOMOLOGY 2021; 58:1463-1469. [PMID: 33537768 DOI: 10.1093/jme/tjab006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Indexed: 06/12/2023]
Abstract
Specific identification of oestrid larvae is usually problematic not only when using morphobiometric features, but also when applying molecular criteria, since very few molecular markers have been described for this group of flies. New molecular markers for oestrid are needed for more reliable species identification, diagnostic purposes, and epidemiological surveys; moreover, they can help in phylogenetic reconstruction. Here, we report the characterization of COI, 28S rDNA, ITS1, and ITS2 in Cephenemyia stimulator from roe deer and in Cephenemyia auribarbis and Pharyngomyia picta from red deer. The COI and 28S rDNA are very uniform in length, while the ITSs sequences are highly variable at both intraspecific and interspecific levels. The described ITSs sequences were longer than those described for other dipteran species by the presence of simple repeats and tandem repeat sequences. In C. auribarbis both ITS1 and ITS2 appeared as two variants, one short and the other long. In general, the analyzed markers present low intraspecific genetic variation and high interspecific variation. ITSs showed the greatest amount of intraspecific and interspecific variation. Phylogenetic analysis demonstrated that the characterized sequences differentiate the species and genera of Oestridae.
Collapse
Affiliation(s)
- Ana M de la Fuente
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Campus Las Lagunillas, s.n., Jaén, Spain
- Wildlife Ecology & Health Group (WE&H)
| | - Noelia Caparrós
- Departamento de Biología Experimental, Universidad de Jaén, Campus Las Lagunillas, s.n., Jaén, Spain
| | - José M Mora-Rodríguez
- Departamento de Biología Experimental, Universidad de Jaén, Campus Las Lagunillas, s.n., Jaén, Spain
| | - María Molina
- Departamento de Biología Experimental, Universidad de Jaén, Campus Las Lagunillas, s.n., Jaén, Spain
| | - Gaël Aleix-Mata
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Campus Las Lagunillas, s.n., Jaén, Spain
- Departamento de Biología Experimental, Universidad de Jaén, Campus Las Lagunillas, s.n., Jaén, Spain
| | - Roser Velarde
- Wildlife Ecology & Health Group (WE&H)
- Servei d'Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Luis E Fidalgo
- Departamento de Anatomía, Producción Animal y Ciencias Clínicas Veterinarias, Universidad de Santiago de Compostela, Lugo, Spain
| | - Ana M López-Beceiro
- Departamento de Anatomía, Producción Animal y Ciencias Clínicas Veterinarias, Universidad de Santiago de Compostela, Lugo, Spain
| | - Pedro Lorite
- Departamento de Biología Experimental, Universidad de Jaén, Campus Las Lagunillas, s.n., Jaén, Spain
| | - Mathieu Boos
- Research Agency in Applied Ecology, Naturaconsta, Wilshausen, France
- Pôle Scientifique, Fédération Nationale des Chasseurs, 13 rue du Général Leclerc, Issy-Les-Moulineaux, Cedex, France
| | - Eva Faure
- Pôle Scientifique, Fédération Nationale des Chasseurs, 13 rue du Général Leclerc, Issy-Les-Moulineaux, Cedex, France
- Commission Sanitaire, Fédération Nationale des Chasseurs, 13 rue du Général Leclerc, Issy-les-Moulineaux, Cedex, France
| | - Jesús M Pérez
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Campus Las Lagunillas, s.n., Jaén, Spain
- Servei d'Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Antonio Sánchez
- Departamento de Biología Experimental, Universidad de Jaén, Campus Las Lagunillas, s.n., Jaén, Spain
| |
Collapse
|
6
|
Munguía-Ortega KK, López-Reyes E, Ceccarelli FS. Testing the Accuracy of Vegetation-Based Ecoregions for Predicting the Species Composition of Blow Flies (Diptera: Calliphoridae). JOURNAL OF INSECT SCIENCE (ONLINE) 2021; 21:6. [PMID: 33428743 PMCID: PMC7799434 DOI: 10.1093/jisesa/ieaa144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Indexed: 06/12/2023]
Abstract
To properly define ecoregions, specific criteria such as geology, climate, or species composition (e.g., the presence of endemic species) must be taken into account to understand distribution patterns and resolve ecological biogeography questions. Since the studies on insects in Baja California are scarce, and no fine-scale ecoregions based on the region's entomofauna is available, this study was designed to test whether the ecoregions based on vegetation can be used for insects, such as Calliphoridae. Nine collecting sites distributed along five ecoregions were selected, between latitudes 29.6° and 32.0°N. In each site, three baited traps were used to collect blow flies from August 2017 to June 2019 during summer, winter, and spring. A total of 30,307 individuals of blow flies distributed in six genera and 13 species were collected. The most abundant species were Cochliomyia macellaria (Fabricius), Phormia regina (Meigen), and Chrysomya rufifacies (Macquart). The composition of the Calliphoridae community was different between the localities and three general groups have been distinguished, based on the species composition similarity (ANOSIM) results: Gulf-Desert, Mountains, and Pacific-Center. The vegetation-based ecoregions only reflect the blow fly species' distributions to a certain extent, meaning that care must be taken when undertaking ecological biogeographical studies using regionalization based on organisms other than the focal taxa because vegetation does not always reflect fauna species composition.
Collapse
Affiliation(s)
- K Ketzaly Munguía-Ortega
- Museo de Artrópodos, Departamento de Biología de la Conservación, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Baja California, Mexico
| | - Eulogio López-Reyes
- Museo de Artrópodos, Departamento de Biología de la Conservación, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Baja California, Mexico
| | - F Sara Ceccarelli
- Museo de Artrópodos, Departamento de Biología de la Conservación, CONACYT-Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Baja California, Mexico
| |
Collapse
|
7
|
Lv Y, Li S, Li Z, Tao R, Shao Y, Chen Y. Quantitative analysis of noncoding RNA from paired fresh and formalin-fixed paraffin-embedded brain tissues. Int J Legal Med 2019; 134:873-884. [PMID: 31788707 DOI: 10.1007/s00414-019-02210-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 11/13/2019] [Indexed: 12/30/2022]
Abstract
Formalin-fixed paraffin-embedded (FFPE) tissues are commonly used both clinically and in forensic pathology. Recently, noncoding RNA (ncRNA) has attracted interest among molecular medical researchers. However, it remains unclear whether newly identified ncRNAs, such as long noncoding RNA (lncRNA) and circular RNA (circRNA), remain stable for downstream molecular analysis in FFPE tissues. Here, we assessed the feasibility of using autoptic FFPE brain tissues from eight individuals to perform quantitative molecular analyses. Selected RNA targets (9 mRNAs and 15 ncRNAs) with different amplicon lengths were studied by RT-qPCR in paired fresh and FFPE specimens. For RNA quality assessment, RNA purity and yield were comparable between the two sample cohorts; however, the RNA integrity number decreased significantly during FFPE sampling. Amplification efficiency also displayed certain variability related with amplicon length and RNA species. We found molecular evidence that short amplicons of mRNA, lncRNA, and circRNA were amplified more efficiently than long amplicons. With the assistance of RefFinder, 5S, SNORD48, miR-103a, and miR-125b were selected as reference genes given their high stability. After normalization, we found that short amplicon markers (e.g., ACTB mRNA and MALAT1 lncRNA) exhibited high consistency of quantification in paired fresh/FFPE samples. In particular, circRNAs (XPO1, HIPK3, and TMEM56) presented relatively consistent and stable expression profiles in FFPE tissues compared with their corresponding linear transcripts. Additionally, we evaluated the influence of prolonged storage time on the amplification of gene transcripts and found that short amplicons still work effectively in archived FFPE biospecimens. In conclusion, our findings demonstrate the possibility of performing accurate quantitative analysis of ncRNAs using short amplicons and standardized RT-qPCR assays in autopsy-derived FFPE samples.
Collapse
Affiliation(s)
- Yehui Lv
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610065, China. .,Shanghai Key Laboratory of Forensic Medicine, Academy of Forensic Science, Shanghai, 200063, China. .,School of basic medical sciences, Shanghai University of Medicine & Health Science, Shanghai, 201318, China.
| | - Shiying Li
- Shanghai Key Laboratory of Forensic Medicine, Academy of Forensic Science, Shanghai, 200063, China
| | - Zhihong Li
- School of basic medical sciences, Shanghai University of Medicine & Health Science, Shanghai, 201318, China
| | - Ruiyang Tao
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610065, China.,Shanghai Key Laboratory of Forensic Medicine, Academy of Forensic Science, Shanghai, 200063, China
| | - Yu Shao
- Shanghai Key Laboratory of Forensic Medicine, Academy of Forensic Science, Shanghai, 200063, China
| | - Yijiu Chen
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610065, China. .,Shanghai Key Laboratory of Forensic Medicine, Academy of Forensic Science, Shanghai, 200063, China.
| |
Collapse
|
8
|
Tong Y, Binford G, Rheims CA, Kuntner M, Liu J, Agnarsson I. Huntsmen of the Caribbean: Multiple tests of the GAARlandia hypothesis. Mol Phylogenet Evol 2019; 130:259-268. [DOI: 10.1016/j.ympev.2018.09.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 09/28/2018] [Accepted: 09/28/2018] [Indexed: 12/17/2022]
|
9
|
Bortolini S, Giordani G, Tuccia F, Maistrello L, Vanin S. Do longer sequences improve the accuracy of identification of forensically important Calliphoridae species? PeerJ 2018; 6:e5962. [PMID: 30588393 PMCID: PMC6301277 DOI: 10.7717/peerj.5962] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 10/17/2018] [Indexed: 11/23/2022] Open
Abstract
Species identification is a crucial step in forensic entomology. In several cases the calculation of the larval age allows the estimation of the minimum Post-Mortem Interval (mPMI). A correct identification of the species is the first step for a correct mPMI estimation. To overcome the difficulties due to the morphological identification especially of the immature stages, a molecular approach can be applied. However, difficulties in separation of closely related species are still an unsolved problem. Sequences of 4 different genes (COI, ND5, EF-1α, PER) of 13 different fly species collected during forensic experiments (Calliphora vicina, Calliphora vomitoria, Lucilia sericata, Lucilia illustris, Lucilia caesar, Chrysomya albiceps, Phormia regina, Cynomya mortuorum, Sarcophaga sp., Hydrotaea sp., Fannia scalaris, Piophila sp., Megaselia scalaris) were evaluated for their capability to identify correctly the species. Three concatenated sequences were obtained combining the four genes in order to verify if longer sequences increase the probability of a correct identification. The obtained results showed that this rule does not work for the species L. caesar and L. illustris. Future works on other DNA regions are suggested to solve this taxonomic issue.
Collapse
Affiliation(s)
- Sara Bortolini
- Department of Life Sciences, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Giorgia Giordani
- School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
| | - Fabiola Tuccia
- School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
| | - Lara Maistrello
- Department of Life Sciences, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Stefano Vanin
- School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
| |
Collapse
|
10
|
Dupuis JR, Guerrero FD, Skoda SR, Phillips PL, Welch JB, Schlater JL, Azeredo-Espin AML, Pérez de León AA, Geib SM. Molecular Characterization of the 2016 New World Screwworm (Diptera: Calliphoridae) Outbreak in the Florida Keys. JOURNAL OF MEDICAL ENTOMOLOGY 2018; 55:938-946. [PMID: 29788142 DOI: 10.1093/jme/tjy078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Indexed: 06/08/2023]
Abstract
New World screwworm (NWS), Cochliomyia hominivorax (Coquerel 1858) (Diptera: Calliphoridae), is a myiasis-causing fly that can be a serious threat to the health of livestock, wildlife, and humans. Its progressive eradication from the southern United States, Mexico, and Central America from the 1950s to 2000s is an excellent example of successful pest management using sterile insect technique (SIT). In late 2016, autochthonous NWS were detected in the Florida Keys, representing this species' first invasion in the United States in >30 yr. Rapid use of quarantine and SIT was successful in eliminating the infestation by early 2017; however, the geographic source of this infestation remains unknown. Here, we use amplicon sequencing to generate mitochondrial and nuclear sequence data representing all confirmed cases of NWS from this infestation, and compare these sequences to preexisting data sets sampling the native distribution of NWS. We ask two questions regarding the FL Keys outbreak. First, is this infestation the result of a single invasion from one source, or multiple invasions from different sources? And second, what is the geographic origin of this invasion? We found virtually no sequence variation between specimens collected from the FL Keys outbreak, which is consistent with a single source of introduction. However, we also found very little geographic resolution in any of the data sets, which precludes identification of the source of this outbreak. Our lack of success in answering our second question speaks to the need for finer-scale genetic or genomic assessments of NWS population structure, which would facilitate source determination of potential future outbreaks.
Collapse
Affiliation(s)
- Julian R Dupuis
- U.S. Department of Agriculture-Agricultural Research Service, Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, Hilo, HI
- Department of Plant and Environmental Protection Services, University of Hawaii at Manoa, Honolulu, HI
| | - Felix D Guerrero
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Kerrville, TX
| | - Steven R Skoda
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Kerrville, TX
| | - Pamela L Phillips
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Kerrville, TX
| | - John B Welch
- USDA-APHIS, International Services, Action Programs, College Station, TX
| | - Jack L Schlater
- USDA-APHIS, National Veterinary Services Laboratory, Ames, IA
| | - Ana Maria L Azeredo-Espin
- Centro de Biologia Molecular e Engenharia Genética and Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas Instituto de Biologia, São Paulo, Brazil
| | - Adalberto A Pérez de León
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Kerrville, TX
| | - Scott M Geib
- U.S. Department of Agriculture-Agricultural Research Service, Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, Hilo, HI
| |
Collapse
|
11
|
Borghesan TC, Campaner M, Matsumoto TE, Espinosa OA, Razafindranaivo V, Paiva F, Carranza JC, Añez N, Neves L, Teixeira MMG, Camargo EP. Genetic Diversity and Phylogenetic Relationships of Coevolving Symbiont-Harboring Insect Trypanosomatids, and Their Neotropical Dispersal by Invader African Blowflies (Calliphoridae). Front Microbiol 2018; 9:131. [PMID: 29467742 PMCID: PMC5808337 DOI: 10.3389/fmicb.2018.00131] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 01/19/2018] [Indexed: 11/18/2022] Open
Abstract
This study is about the inter- and intra-specific genetic diversity of trypanosomatids of the genus Angomonas, and their association with Calliphoridae (blowflies) in Neotropical and Afrotropical regions. Microscopic examination of 3,900 flies of various families, mostly Calliphoridae, revealed that 31% of them harbored trypanosomatids. Small subunit rRNA (SSU rRNA) barcoding showed that Angomonas predominated (46%) over the other common trypanosomatids of blowflies of genera Herpetomonas and Wallacemonas. Among Angomonas spp., A. deanei was much more common than the two-other species, A. desouzai and A. ambiguus. Phylogenetic analyses based on SSU rRNA, glycosomal glyceraldehyde-3-phosphate dehydrogenase (gGAPDH) and internal transcribed spacer rDNA (ITS rDNA) sequences revealed a marked genetic diversity within A. deanei, which comprised four infraspecific genotypes (Dea1–Dea4), and four corresponding symbiont genotypes (Kcr1–Kcr4). Host and symbiont phylogenies were highly congruent corroborating their co-divergence, consistent with host-symbiont interdependent metabolism and symbiont reduced genomes shaped by a long coevolutionary history. We compared the diversity of Angomonas/symbionts from three genera of blowflies, Lucilia, Chrysomya and Cochliomyia. A. deanei, A. desouzai, and A. ambiguus were found in the three genera of blowflies in South America. In Africa, A. deanei and A. ambiguus were identified in Chrysomya. The absence of A. desouzai in Africa and its presence in Neotropical Cochliomyia and Lucilia suggests parasite spillback of A. desouzai into Chrysomya, which was most likely introduced four decades ago from Africa into the Neotropic. The absence of correlation between parasite diversity and geographic and genetic distances, with identical genotypes of A. deanei found in the Neotropic and Afrotropic, is consistent with disjunct distribution due to the recent human-mediated transoceanic dispersal of Angomonas by Chrysomya. This study provides the most comprehensive data gathered so far on the genetic repertoires of a genus of trypanosomatids found in flies from a wide geographical range.
Collapse
Affiliation(s)
- Tarcilla C Borghesan
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Marta Campaner
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Tania E Matsumoto
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Omar A Espinosa
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Fernando Paiva
- Centro de Ciências Biológicas e da Saúde, Universidade Federal do Mato Grosso do Sul, Campo Grande, Brazil
| | - Julio C Carranza
- Laboratorio de Investigaciones en Parasitología Tropical (LIPT), University of Tolima, Ibagué, Colombia
| | - Nestor Añez
- Department of Parasitology, University of Los Andes, Mérida, Venezuela
| | - Luis Neves
- Centro de Biotecnologia, Eduardo Mondlane University, Maputo, Mozambique.,Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Marta M G Teixeira
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Erney P Camargo
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
12
|
Yusseff-Vanegas SZ, Agnarsson I. DNA-barcoding of forensically important blow flies (Diptera: Calliphoridae) in the Caribbean Region. PeerJ 2017; 5:e3516. [PMID: 28761780 PMCID: PMC5531032 DOI: 10.7717/peerj.3516] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 06/07/2017] [Indexed: 11/20/2022] Open
Abstract
Correct identification of forensically important insects, such as flies in the family Calliphoridae, is a crucial step for them to be used as evidence in legal investigations. Traditional identification based on morphology has been effective, but has some limitations when it comes to identifying immature stages of certain species. DNA-barcoding, using COI, has demonstrated potential for rapid and accurate identification of Calliphoridae, however, this gene does not reliably distinguish among some recently diverged species, raising questions about its use for delimitation of species of forensic importance. To facilitate DNA based identification of Calliphoridae in the Caribbean we developed a vouchered reference collection from across the region, and a DNA sequence database, and further added the nuclear ITS2 as a second marker to increase accuracy of identification through barcoding. We morphologically identified freshly collected specimens, did phylogenetic analyses and employed several species delimitation methods for a total of 468 individuals representing 19 described species. Our results show that combination of COI + ITS2 genes yields more accurate identification and diagnoses, and better agreement with morphological data, than the mitochondrial barcodes alone. All of our results from independent and concatenated trees and most of the species delimitation methods yield considerably higher diversity estimates than the distance based approach and morphology. Molecular data support at least 24 distinct clades within Calliphoridae in this study, recovering substantial geographic variation for Lucilia eximia, Lucilia retroversa, Lucilia rica and Chloroprocta idioidea, probably indicating several cryptic species. In sum, our study demonstrates the importance of employing a second nuclear marker for barcoding analyses and species delimitation of calliphorids, and the power of molecular data in combination with a complete reference database to enable identification of taxonomically and geographically diverse insects of forensic importance.
Collapse
Affiliation(s)
| | - Ingi Agnarsson
- Department of Biology, University of Vermont, Burlington, VT, United States of America
| |
Collapse
|
13
|
Sontigun N, Sukontason KL, Zajac BK, Zehner R, Sukontason K, Wannasan A, Amendt J. Wing morphometrics as a tool in species identification of forensically important blow flies of Thailand. Parasit Vectors 2017; 10:229. [PMID: 28486970 PMCID: PMC5424331 DOI: 10.1186/s13071-017-2163-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 05/01/2017] [Indexed: 12/19/2022] Open
Abstract
Background Correct species identification of blow flies is a crucial step for understanding their biology, which can be used not only for designing fly control programs, but also to determine the minimum time since death. Identification techniques are usually based on morphological and molecular characters. However, the use of classical morphology requires experienced entomologists for correct identification; while molecular techniques rely on a sound laboratory expertise and remain ambiguous for certain taxa. Landmark-based geometric morphometric analysis of insect wings has been extensively applied in species identification. However, few wing morphometric analyses of blow fly species have been published. Methods We applied a landmark-based geometric morphometric analysis of wings for species identification of 12 medically and forensically important blow fly species of Thailand. Nineteen landmarks of each right wing of 372 specimens were digitised. Variation in wing size and wing shape was analysed and evaluated for allometric effects. The latter confirmed the influence of size on the shape differences between species and sexes. Wing shape variation among genera and species were analysed using canonical variates analysis followed by a cross-validation test. Results Wing size was not suitable for species discrimination, whereas wing shape can be a useful tool to separate taxa on both, genus and species level depending on the analysed taxa. It appeared to be highly reliable, especially for classifying Chrysomya species, but less robust for a species discrimination in the genera Lucilia and Hemipyrellia. Allometry did not affect species separation but had an impact on sexual shape dimorphism. Conclusions A landmark-based geometric morphometric analysis of wings is a useful additional method for species discrimination. It is a simple, reliable and inexpensive method, but it can be time-consuming locating the landmarks for a large scale study and requires non-damaged wings for analysis. Electronic supplementary material The online version of this article (doi:10.1186/s13071-017-2163-z) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Narin Sontigun
- Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Kabkaew L Sukontason
- Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
| | - Barbara K Zajac
- Institute of Legal Medicine, Forensic Biology/Entomology, Kennedyallee 104, 60596, Frankfurt am Main, Germany
| | - Richard Zehner
- Institute of Legal Medicine, Forensic Biology/Entomology, Kennedyallee 104, 60596, Frankfurt am Main, Germany
| | - Kom Sukontason
- Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Anchalee Wannasan
- Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Jens Amendt
- Institute of Legal Medicine, Forensic Biology/Entomology, Kennedyallee 104, 60596, Frankfurt am Main, Germany
| |
Collapse
|