1
|
Cáceres C, Bourtzis K, Gouvi G, Vreysen MJB, Bimbilé Somda NS, Hejníčková M, Marec F, Meza JS. Development of a novel genetic sexing strain of Ceratitis capitata based on an X-autosome translocation. Sci Rep 2023; 13:16167. [PMID: 37758733 PMCID: PMC10533888 DOI: 10.1038/s41598-023-43164-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023] Open
Abstract
Genetic sexing strains (GSS), such as the Ceratitis capitata (medfly) VIENNA 8 strain, facilitate male-only releases and improve the efficiency and cost-effectiveness of sterile insect technique (SIT) applications. Laboratory domestication may reduce their genetic diversity and mating behaviour and hence, refreshment with wild genetic material is frequently needed. As wild males do not carry the T(Y;A) translocation, and wild females do not easily conform to artificial oviposition, the genetic refreshment of this GSS is a challenging and time-consuming process. In the present study, we report the development of a novel medfly GSS, which is based on a viable homozygous T(XX;AA) translocation using the same selectable markers, the white pupae and temperature-sensitive lethal genes. This allows the en masse cross of T(XX;AA) females with wild males, and the backcrossing of F1 males with the T(XX;AA) females thus facilitating the re-establishment of the GSS as well as its genetic refreshment. The rearing efficiency and mating competitiveness of the novel GSS are similar to those of the T(Y;A)-based VIENNA 8 GSS. However, its advantage to easily allow the genetic refreshment is of great importance as it can ensure the mass production of high-quality males and enhanced efficacy of operational SIT programs.
Collapse
Affiliation(s)
- Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, 2444, Seibersdorf, Austria.
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, 2444, Seibersdorf, Austria
| | - Georgia Gouvi
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, 2444, Seibersdorf, Austria
- Department of Life Sciences, Imperial College London, Sir Alexander Fleming Building, South Kensington Campus, London, UK
| | - Marc J B Vreysen
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, 2444, Seibersdorf, Austria
| | - Nanwintoum Séverin Bimbilé Somda
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, 2444, Seibersdorf, Austria
- Unité de Formation et de Recherche en Sciences et Technologies (UFR/ST), Université Norbert ZONGO (UNZ), BP 376, Koudougou, Burkina Faso
| | - Martina Hejníčková
- Biology Centre CAS, Institute of Entomology, 370 05, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, 370 05, České Budějovice, Czech Republic
| | - František Marec
- Biology Centre CAS, Institute of Entomology, 370 05, České Budějovice, Czech Republic
| | - José S Meza
- Programa Operativo de Moscas, SADER-SENASICA/IICA, Camino a los Cacaotales S/N, CP 30860, Metapa de Domínguez, Chiapas, México
| |
Collapse
|
2
|
Dias VS, Cáceres C, Parker AG, Pereira R, Demirbas-Uzel G, Abd-Alla AMM, Teets NM, Schetelig MF, Handler AM, Hahn DA. Mitochondrial superoxide dismutase overexpression and low oxygen conditioning hormesis improve the performance of irradiated sterile males. Sci Rep 2021; 11:20182. [PMID: 34642368 PMCID: PMC8511041 DOI: 10.1038/s41598-021-99594-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 09/29/2021] [Indexed: 11/11/2022] Open
Abstract
The Sterile Insect Technique (SIT) is a successful autocidal control method that uses ionizing radiation to sterilize insects. However, irradiation in normal atmospheric conditions can be damaging for males, because irradiation generates substantial biological oxidative stress that, combined with domestication and mass-rearing conditions, may reduce sterile male sexual competitiveness and quality. In this study, biological oxidative stress and antioxidant capacity were experimentally manipulated in Anastrepha suspensa using a combination of low-oxygen conditions and transgenic overexpression of mitochondrial superoxide dismutase (SOD2) to evaluate their role in the sexual behavior and quality of irradiated males. Our results showed that SOD2 overexpression enhances irradiated insect quality and improves male competitiveness in leks. However, the improvements in mating performance were modest, as normoxia-irradiated SOD2 males exhibited only a 22% improvement in mating success compared to normoxia-irradiated wild type males. Additionally, SOD2 overexpression did not synergistically improve the mating success of males irradiated in either hypoxia or severe hypoxia. Short-term hypoxic and severe-hypoxic conditioning hormesis, per se, increased antioxidant capacity and enhanced sexual competitiveness of irradiated males relative to non-irradiated males in leks. Our study provides valuable new information that antioxidant enzymes, particularly SOD2, have potential to improve the quality and lekking performance of sterile males used in SIT programs.
Collapse
Affiliation(s)
- Vanessa S Dias
- Insect Pest Control Subprogramme, Joint Food and Agriculture Organization (FAO)/International Atomic Energy Agency (IAEA) Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria.
- Department of Entomology and Nematology, University of Florida, Gainesville, 32611, USA.
| | - Carlos Cáceres
- Insect Pest Control Subprogramme, Joint Food and Agriculture Organization (FAO)/International Atomic Energy Agency (IAEA) Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria
| | - Andrew G Parker
- Insect Pest Control Subprogramme, Joint Food and Agriculture Organization (FAO)/International Atomic Energy Agency (IAEA) Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria
| | - Rui Pereira
- Insect Pest Control Subprogramme, Joint Food and Agriculture Organization (FAO)/International Atomic Energy Agency (IAEA) Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria
| | - Güler Demirbas-Uzel
- Insect Pest Control Subprogramme, Joint Food and Agriculture Organization (FAO)/International Atomic Energy Agency (IAEA) Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria
| | - Adly M M Abd-Alla
- Insect Pest Control Subprogramme, Joint Food and Agriculture Organization (FAO)/International Atomic Energy Agency (IAEA) Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria
| | - Nicholas M Teets
- Department of Entomology and Nematology, University of Florida, Gainesville, 32611, USA
- Department of Entomology, University of Kentucky, Lexington, 40546, USA
| | - Marc F Schetelig
- Department of Insect Biotechnology in Plant Protection, Justus-Liebig-University Gießen, 35394, Gießen, Germany
| | - Alfred M Handler
- Center for Medical, Agricultural and Veterinary Entomology, USDA/ARS, Gainesville, 32608, USA
| | - Daniel A Hahn
- Department of Entomology and Nematology, University of Florida, Gainesville, 32611, USA
| |
Collapse
|
3
|
Nikolouli K, Sassù F, Ntougias S, Stauffer C, Cáceres C, Bourtzis K. Enterobacter sp. AA26 as a Protein Source in the Larval Diet of Drosophila suzukii. Insects 2021; 12:923. [PMID: 34680692 PMCID: PMC8539531 DOI: 10.3390/insects12100923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/29/2021] [Accepted: 10/02/2021] [Indexed: 11/16/2022]
Abstract
The Spotted-Wing Drosophila fly, Drosophila suzukii, is an invasive pest species infesting major agricultural soft fruits. Drosophila suzukii management is currently based on insecticide applications that bear major concerns regarding their efficiency, safety and environmental sustainability. The sterile insect technique (SIT) is an efficient and friendly to the environment pest control method that has been suggested for the D. suzukii population control. Successful SIT applications require mass-rearing of the strain to produce competitive and of high biological quality males that will be sterilized and consequently released in the wild. Recent studies have suggested that insect gut symbionts can be used as a protein source for Ceratitis capitata larval diet and replace the expensive brewer's yeast. In this study, we exploited Enterobacter sp. AA26 as partial and full replacement of inactive brewer's yeast in the D. suzukii larval diet and assessed several fitness parameters. Enterobacter sp. AA26 dry biomass proved to be an inadequate nutritional source in the absence of brewer's yeast and resulted in significant decrease in pupal weight, survival under food and water starvation, fecundity, and adult recovery.
Collapse
Affiliation(s)
- Katerina Nikolouli
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, IAEA Laboratories, 2444 Seibersdorf, Austria; (F.S.); (C.C.); (K.B.)
- Department of Forest and Soil Sciences, Boku, University of Natural Resources and Life Sciences, 1190 Vienna, Austria;
| | - Fabiana Sassù
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, IAEA Laboratories, 2444 Seibersdorf, Austria; (F.S.); (C.C.); (K.B.)
- Department of Forest and Soil Sciences, Boku, University of Natural Resources and Life Sciences, 1190 Vienna, Austria;
- Roklinka 224, Dolní Jirčany, 252 44 Psáry, Czech Republic
| | - Spyridon Ntougias
- Laboratory of Wastewater Management and Treatment Technologies, Department of Environmental Engineering, Democritus University of Thrace, Vas. Sofias 12, 67100 Xanthi, Greece;
| | - Christian Stauffer
- Department of Forest and Soil Sciences, Boku, University of Natural Resources and Life Sciences, 1190 Vienna, Austria;
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, IAEA Laboratories, 2444 Seibersdorf, Austria; (F.S.); (C.C.); (K.B.)
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, IAEA Laboratories, 2444 Seibersdorf, Austria; (F.S.); (C.C.); (K.B.)
| |
Collapse
|
4
|
Gómez-Simuta Y, Parker A, Cáceres C, Vreysen MJB, Yamada H. Characterization and dose-mapping of an X-ray blood irradiator to assess application potential for the sterile insect technique (SIT). Appl Radiat Isot 2021; 176:109859. [PMID: 34284215 DOI: 10.1016/j.apradiso.2021.109859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/06/2021] [Accepted: 07/06/2021] [Indexed: 11/16/2022]
Abstract
Self-contained gamma irradiators have been extensively used to reproductively sterilize insects for the sterile insect technique (SIT). More recently, the use of X-ray generators has gained attention due to the reduced investment, logistic, regulatory and safety requirements involved in the procurement, transport and operation of these machines compared with gamma irradiators. In this study, we evaluated a commercially available, "off-the-shelf" X-ray blood irradiator and found it suitable for insect irradiation in the frame of the SIT.
Collapse
Affiliation(s)
- Yeudiel Gómez-Simuta
- Joint FAO / IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, PO Box 100, 1400 Vienna, Austria.
| | - Andrew Parker
- Joint FAO / IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, PO Box 100, 1400 Vienna, Austria.
| | - Carlos Cáceres
- Joint FAO / IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, PO Box 100, 1400 Vienna, Austria.
| | - Marc J B Vreysen
- Joint FAO / IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, PO Box 100, 1400 Vienna, Austria.
| | - Hanano Yamada
- Joint FAO / IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, PO Box 100, 1400 Vienna, Austria.
| |
Collapse
|
5
|
Castro A, Sáenz R, Avellaneda X, Cáceres C, Galvão L, Mas P, Ritterbusch AE, Fuentes MU. The Health Equity Network of the Americas: inclusion, commitment, and action. Rev Panam Salud Publica 2021; 45:e79. [PMID: 34220991 PMCID: PMC8238255 DOI: 10.26633/rpsp.2021.79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 09/15/2020] [Indexed: 11/24/2022] Open
Abstract
The Health Equity Network of the Americas (HENA) is a multidisciplinary network that promotes knowledge sharing and intersectoral action for equity in health and human rights in the Americas. The objectives of HENA are: 1) to share successful experiences in the development of interventions, considering the social determinants and determination of health, to achieve participatory and community-based health responses; 2) to analyze the health, social, political, environmental and economic impacts of the COVID-19 pandemic; 3) to identify the effects of pandemic care on populations most at risk because of their age and pre-existing health conditions; 4) examine the situation at borders and population movements in the spread of the pandemic and its effects on migrant populations; 5) propose strategies to ensure access to comprehensive care for pregnant women in order to reduce maternal and neonatal suffering, morbidity, and mortality; and 6) analyze violations of human rights and the right to health of historically marginalized populations, including street dwellers and other communities that depend on public spaces and the street for survival. The analytical and intervention models for health equity at HENA are based on various approaches, including social medicine, social epidemiology, medical anthropology, human ecology, and One Health.
Collapse
Affiliation(s)
- Arachu Castro
- Tulane University School of Public Health and Tropical Medicine New Orleans United States of America Tulane University School of Public Health and Tropical Medicine, New Orleans, United States of America
| | - Rocío Sáenz
- School of Public Health, University of Costa Rica San José Costa Rica School of Public Health, University of Costa Rica, San José, Costa Rica
| | - Ximena Avellaneda
- Rosario Castellanos Women's Studies Group Oaxaca Mexico Rosario Castellanos Women's Studies Group, Oaxaca, Mexico
| | - Carlos Cáceres
- School of Public Health and Administration, Cayetano Heredia Peruvian University Lima Peru School of Public Health and Administration, Cayetano Heredia Peruvian University, Lima, Peru
| | - Luiz Galvão
- Oswaldo Cruz Foundation Rio de Janeiro Brazil Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Pedro Mas
- Pedro Kourí Institute of Tropical Medicine Havana Cuba Pedro Kourí Institute of Tropical Medicine, Havana, Cuba
| | - Amy E Ritterbusch
- Luskin School of Public Affairs, University of California Los Angeles United States of America Luskin School of Public Affairs, University of California Los Angeles, United States of America
| | - Manuel Urbina Fuentes
- National Academy of Medicine Mexico City Mexico National Academy of Medicine, Mexico City, Mexico
| |
Collapse
|
6
|
Udina C, Ars J, Morandi A, Vilaró J, Cáceres C, Inzitari M. Rehabilitation in adult post-COVID-19 patients in post-acute care with Therapeutic Exercise. J Frailty Aging 2021; 10:297-300. [PMID: 34105716 PMCID: PMC7876526 DOI: 10.14283/jfa.2021.1] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
COVID-19 patients may experience disability related to Intensive Care Unit (ICU) admission or due to immobilization. We assessed pre-post impact on physical performance of multi-component therapeutic exercise for post-COVID-19 rehabilitation in a post-acute care facility. A 30-minute daily multicomponent therapeutic exercise intervention combined resistance, endurance and balance training. Outcomes: Short Physical Performance Battery; Barthel Index, ability to walk unassisted and single leg stance. Clinical, functional and cognitive variables were collected. We included 33 patients (66.2±12.8 years). All outcomes improved significantly in the global sample (p<0.01). Post-ICU patients, who were younger than No ICU ones, experienced greater improvement in SPPB (4.4±2.1 vs 2.5±1.7, p<0.01) and gait speed (0.4±0.2 vs 0.2±0.1 m/sec, p<0.01). In conclusion, adults surviving COVID-19 improved their functional status, including those who required ICU stay. Our results emphasize the need to establish innovative rehabilitative strategies to reduce the negative functional outcomes of COVID-19.
Collapse
Affiliation(s)
- C Udina
- Cristina Udina, MD, Parc Sanitari Pere Virgili, C/ Esteve Terradas, 30, 08023 Barcelona, Spain, , ORCID ID: 0000-0002-0140-669X
| | | | | | | | | | | |
Collapse
|
7
|
Ramírez-Santos E, Rendon P, Gouvi G, Zacharopoulou A, Bourtzis K, Cáceres C, Bloem K. A Novel Genetic Sexing Strain of Anastrepha ludens for Cost-Effective Sterile Insect Technique Applications: Improved Genetic Stability and Rearing Efficiency. Insects 2021; 12:insects12060499. [PMID: 34072029 PMCID: PMC8228190 DOI: 10.3390/insects12060499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/30/2021] [Accepted: 05/19/2021] [Indexed: 11/16/2022]
Abstract
Anastrepha ludens (Loew) is one of the most destructive insect pests damaging several fruits of economic importance. The sterile insect technique (SIT) is used under an area-wide integrated pest management approach, to suppress these pest populations. Mass rearing facilities were initially established to produce sterile males of bi-sexual strains in support of SIT. The first genetic sexing strain (GSS) for A. ludens, Tapachula-7, based on pupal color dimorphism, was a key development since the release of males-only significantly increases the SIT efficiency. In this study, we document the development of a novel pupal color-based GSS. Twelve radiation-induced translocation lines were assessed as potential GSS in terms of recombination rates and rearing efficiency at a small scale. The best one, GUA10, was cytogenetically characterized: it was shown to carry a single translocation between the Y chromosome and chromosome 2, which is known to carry the black pupae marker. This GSS was further evaluated at medium and large scales regarding its genetic stability, productivity and quality versus Tapachula-7. GUA10 presented better genetic stability, fecundity, fertility, production efficiency, flying ability, and male mating, clear indicators that GUA10 GSS can significantly improve the efficacy and cost-effectiveness of SIT applications against this pest species.
Collapse
Affiliation(s)
- Edwin Ramírez-Santos
- Laboratorio El Pino, Programa MOSCAMED, Km 47.5 Carretera a El Salvador, Parque Nacional Laguna El Pino, 06002 Santa Rosa, Guatemala
- Correspondence:
| | - Pedro Rendon
- International Atomic Energy Agency–Technical Cooperation TCLAC, Programa Moscamed/USDA, Guatemala;
| | - Georgia Gouvi
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Seibersdorf, A-1400 Vienna, Austria; (G.G.); (K.B.); (C.C.)
- Department of Environmental Engineering, University of Patras, 2 Seferi Street, 30100 Agrinio, Greece
| | | | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Seibersdorf, A-1400 Vienna, Austria; (G.G.); (K.B.); (C.C.)
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Seibersdorf, A-1400 Vienna, Austria; (G.G.); (K.B.); (C.C.)
| | - Kenneth Bloem
- Retired, USDA-APHIS-PPQ, Science and Technology, Raleigh, NC 27606, USA;
| |
Collapse
|
8
|
Sulliván SMP, Bohenek JR, Cáceres C, Pomeroy LW. Multiple urban stressors drive fish-based ecological networks in streams of Columbus, Ohio, USA. Sci Total Environ 2021; 754:141970. [PMID: 32920387 DOI: 10.1016/j.scitotenv.2020.141970] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/11/2020] [Accepted: 08/23/2020] [Indexed: 06/11/2023]
Abstract
Integrating a network perspective into multiple-stressor research can reveal indirect stressor effects and simultaneously estimate both taxonomic and functional community characteristics, thus representing a novel approach to stressor paradigms in rivers. Using six years of data from twelve streams of Columbus, Ohio, USA, the effects of nutrients (N:P), impervious surface (%IS), and sedimentation on network properties were quantified. Variability in the strength and distribution of trophic interactions was assessed by incorporating biomass into networks. All stressors impacted some properties of network topology - linkage density (average number of links per species), connectance (fraction of all possible links realized in a network), and compartmentalization (degree to which networks contain discrete sub-webs), including synergistic interactive effects between sedimentation and stream size. We also found support for antagonistic effects between (1) sedimentation and %IS and between %IS and N:P on the weighted index mean link weight, which represents the magnitude of trophic interactions among species in a network, and (2) %IS and stream size on strength standard deviation, a measure of the distribution of total magnitude of all trophic interactions per species in a network. Overall, our results point to the potential for urban stressors such as impervious surfaces and sedimentation - alone and as interactions - to decrease network complexity, compartmentalization, and stability, likely through homogenizing habitat and limiting food resources. The observation that larger streams often buffered the negative effects of these stressors suggests that restoration and other management approaches might be most beneficial in smaller headwater streams of urban catchments.
Collapse
Affiliation(s)
- S Mažeika Patricio Sulliván
- Olentangy River Wetland Research Park, School of Environment and Natural Resources, The Ohio State University, Columbus, OH 43202, USA.
| | - Jason R Bohenek
- Olentangy River Wetland Research Park, School of Environment and Natural Resources, The Ohio State University, Columbus, OH 43202, USA
| | - Carlos Cáceres
- Olentangy River Wetland Research Park, School of Environment and Natural Resources, The Ohio State University, Columbus, OH 43202, USA
| | - Laura W Pomeroy
- Division of Environmental Health Sciences, College of Public Health, Ohio State University, Columbus, OH 43210, USA; Translational Data Analytics Institute, Ohio State University, Columbus, OH 43210, USA
| |
Collapse
|
9
|
Almirón M, Morales L, Vázquez M, Delgado L, Gómez L, Lang N, Dos Santos C, Cáceres C. Percepción de los estudiantes de Kinesiología y Fisioterapia sobre la calidad del aula virtual. Medicina Clínica y Social 2021. [DOI: 10.52379/mcs.v5i1.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Introducción: la pandemia de COVID-19 ha hecho que la enseñanza en instituciones de educación superior de casi todo el mundo cambié drásticamente de la modalidad física presencial a la virtual. Objetivo: conocer la percepción que tienen los estudiantes de Kinesiología y Fisioterapia de Paraguay sobre la calidad del aula virtual en el contexto de la pandemia de COVID-19. Metodología: estudio observacional, exploratorio, descriptivo de corte transverso, prospectivo, con muestreo no probabilístico, de casos consecutivos. Un instrumento en línea fue compartido a través de las redes sociales y aplicaciones de mensajería, con el fin de estudiar características sociodemográficas y socioeconómicas, así como aquellas relacionadas a la calidad educativa. Para esto último se utilizó el “Cuestionario de Evaluación de la Calidad de los cursos virtuales de Educación Social, Calidad General del Entorno y de la Metodología Didáctica” de Santoveña Casal. Resultados: 331 estudiantes participaron de la investigación. El 74,62 % fue del sexo femenino con una edad media de 23,06±4,9. El 93,35 % utilizó por primera vez el aula virtual. Respecto a la calidad del aula virtual, el 45,62 % de los participantes manifestó que se presta “algo” de atención al proceso de enseñanza-aprendizaje y el 47,43 % mencionó que es “algo” eficaz y eficiente. 32,63 % de los participantes respondió que “muy poco” se compensa la inversión económica con la calidad del curso. Conclusión: hoy en día existe un nuevo quehacer en las labores docentes, y donde elementos de la virtualidad han comenzado a utilizarse con el objetivo de no frenar los procesos de enseñanza-aprendizaje. Nuestra investigación pone de manifiesto que la mayoría de los participantes ha utilizado por primera vez un aula virtual durante esta pandemia y, además, nos permite tener una lectura preliminar sobre la calidad de la misma en estos tiempos tan complejos.
Collapse
|
10
|
Meza JS, Bourtzis K, Zacharopoulou A, Gariou-Papalexiou A, Cáceres C. Development and characterization of a pupal-colour based genetic sexing strain of Anastrepha fraterculus sp. 1 (Diptera: Tephritidae). BMC Genet 2020; 21:134. [PMID: 33339513 PMCID: PMC7747363 DOI: 10.1186/s12863-020-00932-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background Area-wide integrated pest management programs (AW-IPM) incorporating sterile insect technique (SIT) have been successful in suppressing populations of different fruit fly species during the last six decades. In addition, the development of genetic sexing strains (GSS) for different fruit fly species has allowed for sterile male-only releases and has significantly improved the efficacy and cost effectiveness of the SIT applications. The South American Fruit Fly Anastrepha fraterculus (Diptera: Tephritidae) is a major agricultural pest attacking several fruit commodities. This impedes international trade and has a significant negative impact on the local economies. Given the importance of sterile male-only releases, the development of a GSS for A. fraterculus would facilitate the implementation of an efficient and cost-effective SIT operational program against this insect pest species. Results For potential use in a GSS, three new morphological markers (mutants) were isolated in a laboratory strain of A. fraterculus sp. 1, including the black pupae (bp) gene located on chromosome VI. The black pupa phenotype was used as a selectable marker to develop genetic sexing strains by linking the wild type allele (bp+) to the Y-chromosome -via irradiation to induce a reciprocal Y-autosome translocation. Four GSS were established and one of them, namely GSS-89, showed the best genetic stability and the highest fertility. This strain was selected for further characterization and cytogenetic analysis. Conclusions We herein report the development of the first genetic sexing strain of a major agricultural pest, A. fraterculus sp. 1, using as a selectable marker the black pupae genetic locus.
Collapse
Affiliation(s)
- José S Meza
- Programa Moscafrut, AGRICULTURA/SENASICA-IICA, Metapa de Domínguez, Chiapas, Mexico. .,Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria.
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
| | - Antigone Zacharopoulou
- Deparment of Biology, Division of Genetics, Cell and Development Biology, University of Patras, Patras, Greece
| | - Angeliki Gariou-Papalexiou
- Deparment of Biology, Division of Genetics, Cell and Development Biology, University of Patras, Patras, Greece
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
| |
Collapse
|
11
|
Bourtzis K, Cáceres C, Schetelig MF. Joint FAO/IAEA coordinated research project on "comparing rearing efficiency and competitiveness of sterile male strains produced by genetic, transgenic or symbiont-based technologies". BMC Genet 2020; 21:148. [PMID: 33339502 PMCID: PMC7747360 DOI: 10.1186/s12863-020-00931-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Marc F. Schetelig
- Justus-Liebig-University Giessen, Institute for Insect Biotechnology, Insect Biotechnology in Plant Protection, Winchesterstr. 2, 35394 Giessen, Germany
| |
Collapse
|
12
|
Porras MF, Meza JS, Rajotte EG, Bourtzis K, Cáceres C. Improving the Phenotypic Properties of the Ceratitis capitata (Diptera: Tephritidae) Temperature-Sensitive Lethal Genetic Sexing Strain in Support of Sterile Insect Technique Applications. J Econ Entomol 2020; 113:2688-2694. [PMID: 33020821 PMCID: PMC7724746 DOI: 10.1093/jee/toaa220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Indexed: 06/11/2023]
Abstract
The genetic sexing strain (GSS) of the Mediterranean fruit fly (Ceratitis capitata (Wiedemann)) Vienna 8D53- is based on a male-linked translocation system and uses two selectable markers for male-only production, the white pupae (wp) and the temperature sensitivity lethal (tsl) genes. In this GSS, males emerge from brown pupae and are resistant to high temperatures while females emerge from white pupae, are sensitive to high temperatures. However, double homozygous females (wp tsl/wp tsl) exhibit a slower development rate compared to heterozygous males (wp+tsl+/wp tsl) during the larval stage, which was attributed to the pleiotropic effects of the tsl gene. We present the first evidence that this slower development is due to a different gene, here namely slow development (sd), which is closely linked to the tsl gene. Taking advantage of recombination phenomena between the two loci, we report the isolation of a novel temperature sensitivity lethal strain using the wp mutation as a morphological marker, which showed faster development (wp tsl FD) during the larval stage and increased in its temperature sensitivity compared with the normal tsl strain. Moreover, the introgression of this novel wp tsl FD combined trait into the Vienna 8D53- GSS, resulted in a novel Vienna 8D53- FD GSS, where females showed differences in the thermal sensibility, larval development speed, and productivity profiles. The modification of these traits and their impact on the mass rearing of the GSS for sterile insect technique applications are discussed.
Collapse
Affiliation(s)
- Mitzy F Porras
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Seibersdorf, Austria
| | - Jose S Meza
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Seibersdorf, Austria
| | - Edwin G Rajotte
- Department of Entomology, The Pennsylvania State University, University Park, PA
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Seibersdorf, Austria
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Seibersdorf, Austria
| |
Collapse
|
13
|
Castro A, Sáenz R, Avellaneda X, Cáceres C, Galvão L, Mas P, Ritterbusch AE, Fuentes MU. [The Health Equity Network of the Americas: inclusion, commitment, and action]. Rev Panam Salud Publica 2020; 44:e130. [PMID: 33165370 PMCID: PMC7595006 DOI: 10.26633/rpsp.2020.130] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 09/15/2020] [Indexed: 12/27/2022] Open
Abstract
La Red de las Américas para la Equidad en Salud (RAES) es una red multidisciplinaria que promueve el intercambio de conocimientos y la acción intersectorial para la equidad en salud y los derechos humanos en las Américas. Los objetivos de la RAES consisten en: 1) compartir experiencias exitosas en el desarrollo de intervenciones, considerando la determinación y los determinantes sociales, para lograr respuestas participativas y comunitarias en salud; 2) analizar los impactos sanitarios, sociales, políticos, ambientales y económicos de la pandemia de COVID-19; 3) identificar los efectos de la atención de la pandemia en las poblaciones de mayor riesgo por su edad y las condiciones de salud preexistentes; 4) examinar la situación de las fronteras y de los movimientos de población en la propagación de la pandemia y de sus efectos en las poblaciones migrantes; 5) proponer estrategias para asegurar el acceso a la atención integral de las mujeres gestantes, con el fin de reducir el sufrimiento, la morbilidad y la mortalidad materna y neonatal; y 6) analizar vulneraciones de derechos humanos y del derecho a la salud de poblaciones históricamente marginalizadas, incluyendo habitantes en situación de calle y otras comunidades que dependen de los espacios públicos y de la calle para sobrevivir. Los modelos analíticos y de intervención para la equidad en salud de la RAES se desarrollan desde varios enfoques, como la medicina social, la epidemiologia social, la antropología médica, la ecología humana y el de Una salud.
Collapse
Affiliation(s)
- Arachu Castro
- Escuela de Salud Pública y Medicina Tropical de la Universidad de Tulane Nueva Orleans Estados Unidos de América Escuela de Salud Pública y Medicina Tropical de la Universidad de Tulane, Nueva Orleans, Estados Unidos de América
| | - Rocío Sáenz
- Escuela de Salud Pública Universidad de Costa Rica, San José Costa Rica Escuela de Salud Pública, Universidad de Costa Rica, San José, Costa Rica
| | - Ximena Avellaneda
- Grupo de Estudios sobre la Mujer Rosario Castellanos Oaxaca México Grupo de Estudios sobre la Mujer Rosario Castellanos, Oaxaca, México
| | - Carlos Cáceres
- Facultad de Salud Pública y Administración Universidad Peruana Cayetano Heredia, Lima Perú Facultad de Salud Pública y Administración, Universidad Peruana Cayetano Heredia, Lima, Perú
| | - Luiz Galvão
- Fundación Oswaldo Cruz Rio de Janeiro Brasil Fundación Oswaldo Cruz, Rio de Janeiro, Brasil
| | - Pedro Mas
- Instituto de Medicina Tropical Pedro Kourí La Habana Cuba Instituto de Medicina Tropical Pedro Kourí, La Habana, Cuba
| | - Amy E Ritterbusch
- Escuela Luskin de Asuntos Públicos, Universidad de California Los Ángeles Estados Unidos de América Escuela Luskin de Asuntos Públicos, Universidad de California, Los Ángeles, Estados Unidos de América
| | - Manuel Urbina Fuentes
- Academia Nacional de Medicina Ciudad de México México Academia Nacional de Medicina, Ciudad de México, México
| |
Collapse
|
14
|
Crespo-Cuevas AM, Canento T, Hernández-Perez M, Cáceres C, González A, Ispierto L, Mataró M, Vilas D, Planas-Ballvé A, Martin L, Muñoz-Ortiz L, Arenillas JF, Via M, Castañón M, Millan M, Dorado L, López-Cancio E. The Barcelona-Asymptomatic Intracranial Atherosclerosis (AsIA) study: Subclinical cervico-cerebral stenosis and middle cerebral artery pulsatility index as predictors of long-term incident cognitive impairment. Atherosclerosis 2020; 312:104-109. [PMID: 32921430 DOI: 10.1016/j.atherosclerosis.2020.08.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 07/19/2020] [Accepted: 08/28/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND AND AIMS We aimed to study subclinical non-invasive vascular markers as predictors of incident long-term cognitive impairment in a longitudinal population-based study. METHODS The Barcelona-Asymptomatic Intracranial Atherosclerosis (AsIA) study is a population-based study that included a random sample of 933 Caucasian subjects (mean age 66 years, 64% male) with a moderate-high vascular risk and without history of stroke or dementia. Subclinical carotid and intracranial stenosis was assessed at baseline visit by cervical and transcranial color-coded duplex (TCCD) and confirmed by magnetic resonance angiography. Cervico-cerebral stenosis (CCS) was defined as the presence of extra and/or intracranial stenosis >50%. Baseline middle cerebral artery pulsatility index (MCA-PI) was measured bilaterally by TCCD, and mean PI of both sides was considered for analyses. Subjects were followed-up to determine incident long-term cognitive impairment (mild cognitive impairment or dementia). RESULTS After a median of 7.16 [6.91-7.75] years of follow-up, 91 subjects (9.7%) developed cognitive impairment, 27 of them mild cognitive impairment, and 64 dementia. Incidence of cognitive impairment was significantly higher among subjects with subclinical CCS (21.4% versus 9% in those without CCS) and among those with mean MCA-PI>1 (13.5% versus 7.4% in those with MCA-PI<1). In multivariate Cox regression analyses, both CCS and MCA-PI>1 were independently associated with incident cognitive impairment with HR of 2.07 [1.11-3.88] and 1.58 [1.02-2.46], respectively. CONCLUSIONS Subclinical cervico-cerebral stenosis and higher MCA-PI are non-invasive neurosonological markers of incident long-term cognitive impairment in our population.
Collapse
Affiliation(s)
- A M Crespo-Cuevas
- Department of Neurology, Hospital Del Mar - Parc de Salut Del Mar, Barcelona, Spain
| | - T Canento
- Department of Neurology, Hospital Universitari Germans Trias I Pujol, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - M Hernández-Perez
- Department of Neurology, Hospital Universitari Germans Trias I Pujol, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - C Cáceres
- Department of Neurology, Hospital Universitari Germans Trias I Pujol, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - A González
- Department of Neurology, Hospital Universitari Germans Trias I Pujol, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - L Ispierto
- Department of Neurology, Hospital Universitari Germans Trias I Pujol, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - M Mataró
- Department of Clinical Psychology and Psychobiology, Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - D Vilas
- Department of Neurology, Hospital Universitari Germans Trias I Pujol, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - A Planas-Ballvé
- Department of Neurology, Hospital Sant Joan Despí Moisès Broggi and Hospital General de L'Hospitalet, Consorci Sanitari Integral, Barcelona, Spain
| | - L Martin
- Department of Neurology, Hospital Universitari Germans Trias I Pujol, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - L Muñoz-Ortiz
- Agència de Qualitat I Avaluació Sanitàries de Catalunya (AQuAS), Barcelona, Spain
| | - J F Arenillas
- Department of Neurology, Hospital Clínico Universitario de Valladolid, Valladolid, Spain
| | - M Via
- Department of Clinical Psychology and Psychobiology, Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - M Castañón
- Department of Neurology, Hospital Universitario Central de Asturias, University of Oviedo, Spain
| | - M Millan
- Department of Neurology, Hospital Universitari Germans Trias I Pujol, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - L Dorado
- Department of Neurology, Hospital Universitari Germans Trias I Pujol, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - E López-Cancio
- Department of Neurology, Hospital Universitario Central de Asturias, University of Oviedo, Spain.
| |
Collapse
|
15
|
Peña-Bengoa F, Cáceres C, Niklander S, Meléndez P. Association between second mesiobuccal missed canals and apical periodontitis in maxillary molars of a Chilean subpopulation. J Clin Exp Dent 2020; 15:e173-e176. [PMID: 37008247 PMCID: PMC10062462 DOI: 10.4317/jced.60156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 01/27/2023] [Indexed: 02/20/2023] Open
Abstract
Background To determine the frequency of missed second mesiobuccal canals (MB2) and apical periodontitis in maxillary molars of a Chilean subpopulation using cone beam computed tomography (CBCT). Material and Methods Two previously calibrated operators evaluated CBCTs with a total of 588 upper molars, of which 179 endodontically treated molars were selected. Axial tomographic slices were used to study the frequency and association between the presence of apical periodontitis and untreated MB2 canals. Results Of the 179 endodontically treated molars, 45.78% (84) presented MB2 missed canals. Of the upper molars that presented MB2 missed canals, 70% were associated with apical periodontitis, which was statistically significant (p< 0.0001). Sixty-two corresponded to first molars (74%) and 22 to second molars (26%). Of the first molars, 34 (54.8%) presented with apical periodontitis and MB2 missed canals (p< 0.0001), while 12 (54.4%) of the second molars presented this association (p = 0.081). Conclusions MB2 missed canals are associated with a high degree of apical periodontitis and may be an important predictor of endodontic prognosis of upper molars. Key words:Endodontics, apical periodontitis, cone beam computed tomography, missed canals, maxillary molars.
Collapse
|
16
|
Sassù F, Nikolouli K, Pereira R, Vreysen MJB, Stauffer C, Cáceres C. Irradiation dose response under hypoxia for the application of the sterile insect technique in Drosophila suzukii. PLoS One 2019; 14:e0226582. [PMID: 31891597 PMCID: PMC6938351 DOI: 10.1371/journal.pone.0226582] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 11/28/2019] [Indexed: 11/19/2022] Open
Abstract
Treating insects with a lower oxygen atmosphere before and during exposure to radiation can mitigate some of the negative physiological effects due to the irradiation. The irradiation of pupae under oxygen-reduced environment such as hypoxia or anoxia is routinely used in the sterile insect technique (SIT) of some tephritid species as it provides radiological protection. This treatment allows to have the sterile pupae already in sealed containers facilitating the shipment. SIT is an environment friendly control tactic that could be used to manage populations of Drosophila suzukii in confined areas such as greenhouses. The objectives of this study were to assess the effect of irradiation on the reproductive sterility in D. suzukii males and females under low-oxygen atmosphere (hypoxia) and atmosphere conditions (normoxia). Additionally, we assessed the differences in radiological sensitivity of pupae treated under hypoxia and normoxia conditions. Finally, the effect on emergence rate and flight ability of the irradiated D. suzukii adults exposed to doses that induced >99% of sterility were assessed. Pupae needed a 220 Gy irradiation dose to achieve >99% of egg hatch sterility in males irrespective of the atmosphere condition. For females the same level of sterility was achieved already at 75 Gy and 90 Gy for the normoxia and hypoxia treatments, respectively. Radiation exposure at 170 and 220 Gy under the two atmosphere treatments did not have any effect on the emergence rate and flight ability of D. suzukii males and females. Therefore, hypoxia conditions can be used as part of an area-wide insect pest management program applying SIT to facilitate the protocols of packing, irradiation and shipment of sterile D. suzukii pupae.
Collapse
Affiliation(s)
- Fabiana Sassù
- Department of Forest and Soil Sciences, Boku, University of Natural Resources and Life Sciences, Vienna, Austria
- Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Subprogramme, Joint FAO/IAEA, Vienna, Austria
| | - Katerina Nikolouli
- Department of Forest and Soil Sciences, Boku, University of Natural Resources and Life Sciences, Vienna, Austria
- Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Subprogramme, Joint FAO/IAEA, Vienna, Austria
| | - Rui Pereira
- Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Subprogramme, Joint FAO/IAEA, Vienna, Austria
| | - Marc J. B. Vreysen
- Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Subprogramme, Joint FAO/IAEA, Vienna, Austria
| | - Christian Stauffer
- Department of Forest and Soil Sciences, Boku, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Carlos Cáceres
- Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Subprogramme, Joint FAO/IAEA, Vienna, Austria
| |
Collapse
|
17
|
Cáceres C, Tsiamis G, Yuval B, Jurkevitch E, Bourtzis K. Joint FAO/IAEA coordinated research project on "use of symbiotic bacteria to reduce mass-rearing costs and increase mating success in selected fruit pests in support of SIT application". BMC Microbiol 2019; 19:284. [PMID: 31870284 PMCID: PMC6929543 DOI: 10.1186/s12866-019-1644-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400, Vienna, Austria.
| | - George Tsiamis
- Department of Environmental Engineering, University of Patras, 2 Seferi St., 30131, Agrinio, Greece
| | - Boaz Yuval
- Departments of Entomology and Plant Pathology & Microbiology, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, POB 12, 76100, Rehovot, Israel
| | - Edouard Jurkevitch
- Departments of Entomology and Plant Pathology & Microbiology, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, POB 12, 76100, Rehovot, Israel
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400, Vienna, Austria
| |
Collapse
|
18
|
Kyritsis GA, Augustinos AA, Ntougias S, Papadopoulos NT, Bourtzis K, Cáceres C. Enterobacter sp. AA26 gut symbiont as a protein source for Mediterranean fruit fly mass-rearing and sterile insect technique applications. BMC Microbiol 2019; 19:288. [PMID: 31870292 PMCID: PMC6929400 DOI: 10.1186/s12866-019-1651-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Background Insect species have established sophisticated symbiotic associations with diverse groups of microorganisms including bacteria which have been shown to affect several aspects of their biology, physiology, ecology and evolution. In addition, recent studies have shown that insect symbionts, including those localized in the gastrointestinal tract, can be exploited for the enhancement of sterile insect technique (SIT) applications against major insect pests such as the Mediterranean fruit fly (medfly) Ceratitis capitata. We previously showed that Enterobacter sp. AA26 can be used as probiotic supplement in medfly larval diet improving the productivity and accelerating the development of the VIENNA 8 genetic sexing strain (GSS), which is currently used in large scale operational SIT programs worldwide. Results Enterobacter sp. AA26 was an adequate nutritional source for C. capitata larvae, comprising an effective substitute for brewer’s yeast. Incorporating inactive bacterial cells in the larval diet conferred a number of substantial beneficial effects on medfly biology. The consumption of bacteria-based diet (either as full or partial yeast replacement) resulted in decreased immature stages mortality, accelerated immature development, increased pupal weight, and elongated the survival under stress conditions. Moreover, neither the partial nor the complete replacement of yeast with Enterobacter sp. AA26 had significant impact on adult sex ratio, females’ fecundity, adults’ flight ability and males’ mating competitiveness. The absence of both yeast and Enterobacter sp. AA26 (deprivation of protein source and possible other important nutrients) from the larval diet detrimentally affected the larval development, survival and elongated the immature developmental duration. Conclusions Enterobacter sp. AA26 dry biomass can fully replace the brewer’s yeast as a protein source in medfly larval diet without any effect on the productivity and the biological quality of reared medfly of VIENNA 8 GSS as assessed by the FAO/IAEA/USDA standard quality control tests. We discuss this finding in the context of mass-rearing and SIT applications.
Collapse
Affiliation(s)
- Georgios A Kyritsis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400, Vienna, Austria.,Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Phytokou St., 38446, N. Ionia, Magnisia, Greece
| | - Antonios A Augustinos
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400, Vienna, Austria
| | - Spyridon Ntougias
- Laboratory of Wastewater Management and Treatment Technologies, Department of Environmental Engineering, Democritus University of Thrace, Vas Sofias 12, 67100, Xanthi, Greece
| | - Nikos T Papadopoulos
- Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Phytokou St., 38446, N. Ionia, Magnisia, Greece
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400, Vienna, Austria.
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400, Vienna, Austria
| |
Collapse
|
19
|
Kyritsis GA, Augustinos AA, Livadaras I, Cáceres C, Bourtzis K, Papadopoulos NT. Medfly-Wolbachia symbiosis: genotype x genotype interactions determine host's life history traits under mass rearing conditions. BMC Biotechnol 2019; 19:96. [PMID: 31847836 PMCID: PMC6918550 DOI: 10.1186/s12896-019-0586-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Wolbachia pipientis is a widespread, obligatory intracellular and maternally inherited bacterium, that induces a wide range of reproductive alterations to its hosts. Cytoplasmic Incompatibility (CI) is causing embryonic lethality, the most common of them. Despite that Wolbachia-borne sterility has been proposed as an environmental friendly pest control method (Incompatible Insect Technique, IIT) since 1970s, the fact that Wolbachia modifies important fitness components of its hosts sets severe barriers to IIT implementation. Mass rearing of Mediterranean fruit fly, Ceratitis capitata (medfly), is highly optimized given that this pest is a model species regarding the implementation of another sterility based pest control method, the Sterile Insect Technique (SIT). We used the medfly-Wolbachia symbiotic association, as a model system, to study the effect of two different Wolbachia strains, on the life history traits of 2 C. capitata lines with different genomic background. RESULTS Wolbachia effects are regulated by both C. capitata genetic background and the Wolbachia strain. Wolbachia infection reduces fertility rates in both C. capitata genetic backgrounds and shortens the pre-pupa developmental duration in the GSS strain. On the other hand, regardless of the strain of Wolbachia (wCer2, wCer4) infection does not affect either the sex ratio or the longevity of adults. wCer4 infection imposed a reduction in females' fecundity but wCer2 did not. Male mating competitiveness, adults flight ability and longevity under water and food deprivation were affected by both the genetic background of medfly and the strain of Wolbachia (genotype by genotype interaction). CONCLUSION Wolbachia infection could alter important life history traits of mass-reared C. capitata lines and therefore the response of each genotype on the Wolbachia infection should be considered toward ensuring the productivity of the Wolbachia-infected insects under mass-rearing conditions.
Collapse
Affiliation(s)
- Georgios A. Kyritsis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria
- Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Phytokou St., 38446 N, Ionia Magnisia, Greece
| | - Antonios A. Augustinos
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria
| | - Ioannis Livadaras
- Foundation for Research and Technology - Hellas (FORTH) Institute of Molecular Biology and Biotechnology, FORTH, Nikolaou Plastira 100, Vassilika Vouton, GR - 700 13 Heraklion, Crete Greece
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, A-1400 Vienna, Austria
| | - Nikos T. Papadopoulos
- Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Phytokou St., 38446 N, Ionia Magnisia, Greece
| |
Collapse
|
20
|
Augustinos AA, Tsiamis G, Cáceres C, Abd-Alla AMM, Bourtzis K. Taxonomy, Diet, and Developmental Stage Contribute to the Structuring of Gut-Associated Bacterial Communities in Tephritid Pest Species. Front Microbiol 2019; 10:2004. [PMID: 31555239 PMCID: PMC6727639 DOI: 10.3389/fmicb.2019.02004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 08/15/2019] [Indexed: 11/30/2022] Open
Abstract
Insect-symbiont interactions are receiving much attention in the last years. Symbiotic communities have been found to influence a variety of parameters regarding their host physiology and fitness. Gut symbiotic communities can be dynamic, changing through time and developmental stage. Whether these changes represent real differential needs and preferential relationships has not been addressed yet. In this study, we characterized the structure of symbiotic communities of five laboratory populations that represent five Tephritidae species that are targets for pest control management through the sterile insect technique (SIT), namely Bactrocera oleae, Anastrepha grandis, Anastrepha ludens, and two morphotypes of Anastrepha fraterculus (sp.1 and the Andean lineage). These populations are under artificial or semi artificial rearing conditions and their characterization was performed for different developmental stages and age. Our results demonstrate the presence of a symbiotic community comprising mainly from different Enterobacteriaceae genera. These communities are dynamic across developmental stages, although not highly variable, and appear to have a species-specific profile. Additional factors may contribute to the observed structuring, including diet, rearing practices, and the degree of domestication. Comparison of these results with those derived from natural populations could shed light to changes occurring in the symbiotic level during domestication of Tephritidae populations. Further studies will elucidate whether the changes are associated with modification of the behavior in laboratory strains and assess their effects in the quality of the mass rearing insects. This could be beneficial for improving environmentally friendly, species-specific, pest control methods, such as the SIT.
Collapse
Affiliation(s)
- Antonios A Augustinos
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - George Tsiamis
- Department of Environmental Engineering, University of Patras, Agrinio, Greece
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Adly M M Abd-Alla
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| |
Collapse
|
21
|
Meza JS, Cáceres C, Bourtzis K. Slow Larvae Mutant and Its Potential to Improve the Pupal Color-Based Genetic Sexing System in Mexican Fruit Fly, (Diptera: Tephritidae). J Econ Entomol 2019; 112:1604-1610. [PMID: 31329959 PMCID: PMC6678071 DOI: 10.1093/jee/toz094] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Indexed: 06/10/2023]
Abstract
For many years, an area-wide fruit fly control campaign against the Mexican fruit fly, Anastrepha ludens (Loew) has been implemented in some regions of Mexico and Texas, using the sterile insect technique (SIT) as its principal component. To improve the efficiency of the SIT, a genetic sexing strain based on black pupae mutation (bp) was developed for A. ludens, namely, 'Tapachula-7' (Tap-7 genetic sexing strains [GSSs]). This strain was introduced into the AW-IPM program recently and allows male-only releases for SIT applications. Here, we report the genetic and biological characterization of a new mutation, slow larvae (sl), which was introduced to the original translocation of the Tap-7 GSS resulting in two new GSS (slow-7 and Tap/slow-7). In both GSSs, the translocated wild-type males emerge from brown pupae that develop faster than females. The females are homozygous for sl mutation in the slow-7 GSS and homozygous for sl and bp mutations in the Tap/slow-7 GSS, reaching larval maturity 2 d after most of the wild-type males, allowing the separation of most males during pupariation. The potential use of the slow-7 and Tap/slow-7 GSSs in mass rearing and large-scale population suppression programs is discussed.
Collapse
Affiliation(s)
- José S Meza
- Programa Moscafrut, SADER/SENASICA-IICA, Metapa de Domínguez, Chiapas, México
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
| |
Collapse
|
22
|
Cáceres C, Spatharis S, Kaiserli E, Smeti E, Flowers H, Bonachela JA. Temporal phosphate gradients reveal diverse acclimation responses in phytoplankton phosphate uptake. ISME J 2019; 13:2834-2845. [PMID: 31350454 DOI: 10.1038/s41396-019-0473-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 06/11/2019] [Accepted: 06/28/2019] [Indexed: 11/10/2022]
Abstract
Phytoplankton face environmental nutrient variations that occur in the dynamic upper layers of the ocean. Phytoplankton cells are able to rapidly acclimate to nutrient fluctuations by adjusting their nutrient-uptake system and metabolism. Disentangling these acclimation responses is a critical step in bridging the gap between phytoplankton cellular physiology and community ecology. Here, we analyzed the dynamics of phosphate (P) uptake acclimation responses along different P temporal gradients by using batch cultures of the diatom Phaeodactylum tricornutum. We employed a multidisciplinary approach that combined nutrient-uptake bioassays, transcriptomic analysis, and mathematical models. Our results indicated that cells increase their maximum nutrient-uptake rate (Vmax) both in response to P pulses and strong phosphorus limitation. The upregulation of three genes coding for different P transporters in cells experiencing low intracellular phosphorus levels supported some of the observed Vmax variations. In addition, our mathematical model reproduced the empirical Vmax patterns by including two types of P transporters upregulated at medium-high environmental and low intracellular phosphorus levels, respectively. Our results highlight the existence of a sequence of acclimation stages along the phosphate continuum that can be understood as a succession of acclimation responses. We provide a novel conceptual framework that can contribute to integrating and understanding the dynamics and wide diversity of acclimation responses developed by phytoplankton.
Collapse
Affiliation(s)
- Carlos Cáceres
- Department of Mathematics and Statistics, University of Strathclyde, Livingstone Tower, 26 Richmond St., Glasgow, Scotland, G1 1XH, UK. .,Schiermeier Olentangy River Wetland Research Park, School of Environment and Natural Resources, The Ohio State University, Columbus, OH, 43202, USA.
| | - Sofie Spatharis
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, Scotland, G12 8QQ, UK.,School of Life Sciences, University of Glasgow, Glasgow, Scotland, G12 8QQ, UK
| | - Eirini Kaiserli
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Evangelia Smeti
- Hellenic Centre for Marine Research, Institute of Marine Biological Resources and Inland Waters, 46.7 km Athens-Sounio Ave., Anavyssos, 19013, Greece
| | - Hugh Flowers
- Department of Chemistry, University of Glasgow, Glasgow, Scotland, G12 8QQ, UK
| | - Juan A Bonachela
- Department of Mathematics and Statistics, University of Strathclyde, Livingstone Tower, 26 Richmond St., Glasgow, Scotland, G1 1XH, UK. .,Department of Ecology, Evolution, and Natural Resources, Rutgers University, 14 College Farm Road, New Brunswick, NJ, 08901, USA.
| |
Collapse
|
23
|
Roriz AKP, Japyassú HF, Cáceres C, Teresa Vera M, Joachim-Bravo IS. Pheromone emission patterns and courtship sequences across distinct populations within Anastrepha fraterculus (Diptera-Tephitidae) cryptic species complex - CORRIGENDUM. Bull Entomol Res 2019; 109:418. [PMID: 31169119 DOI: 10.1017/s0007485318001013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
|
24
|
Roriz AKP, Japyassú HF, Cáceres C, Vera MT, Joachim-Bravo IS. Pheromone emission patterns and courtship sequences across distinct populations within Anastrepha fraterculus (Diptera-Tephritidae) cryptic species complex. Bull Entomol Res 2019; 109:408-417. [PMID: 30488810 DOI: 10.1017/s0007485318000846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Sexual behavioural isolation can result from sexual selection and represents a relevant factor associated with the speciation process. We analysed the pheromone emission pattern and the courtship of males of five different populations of the Anastrepha fraterculus cryptic complex: Brazil (Vacaria, Tucumán and Piracicaba), Colombia and Peru. The time of pheromone emission was recorded in each population every 30 min during the day. The behavioural sequences of courting were video recorded and analysed using EthoSeq software. Males from different populations have showed different period of pheromone emission - Vacaria, Piracicaba and Tucumán executed calling only during the morning, Colombia only in the afternoon and Peru during both periods. The general frequencies of the courtship units of the males were distinct among the populations. Three groups were formed in the classification from the function of 14 behavioural routines: Vacaria, Piracicaba and Tucumán formed a single group (Brazil-1), while Colombia and Peru formed two distinct groups. In the probabilistic trees generated, the behavioural units that most contributed to the occurrence of copulation were distinct among the three groups formed: Brazil-1 (Contact, Alignment and Arrowhead-1); Colombia (Flying, Mobile, Contact and Alignment); Peru (Flying, Arrowhead-1 and Calling). Our results indicated differences in sexual behaviour that may explain the behavioural isolation found between the distinct groups in addition with the temporal isolation found between the Brazil-1 and Colombia populations. The evolutionary implications for the A. fraterculus cryptic species complex are discussed.
Collapse
Affiliation(s)
- A K P Roriz
- Universidade Federal da Bahia, Instituto de Biologia, Barão do Jeremoabo s/n, Campus Universitário de Ondina,40170-290, Salvador, BA,Brazil
| | - H F Japyassú
- Universidade Federal da Bahia, Instituto de Biologia, Barão do Jeremoabo s/n, Campus Universitário de Ondina,40170-290, Salvador, BA,Brazil
| | - C Cáceres
- Insect Pest Control Laboratory,Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture,POBox 100, Seibersdorf,Austria
| | - M Teresa Vera
- Cátedra Terapéutica Vegetal, Departamento de Sanidad Vegetal, Facultad de Agronomía y Zootecnia, UNT,Avenida Kirchner 1900 - (4000) San Miguel de Tucumán, Tucumán,Argentina
| | - I S Joachim-Bravo
- Universidade Federal da Bahia, Instituto de Biologia, Barão do Jeremoabo s/n, Campus Universitário de Ondina,40170-290, Salvador, BA,Brazil
| |
Collapse
|
25
|
Shannon G, Jansen M, Williams K, Cáceres C, Motta A, Odhiambo A, Eleveld A, Mannell J. Gender equality in science, medicine, and global health: where are we at and why does it matter? Lancet 2019; 393:560-569. [PMID: 30739691 DOI: 10.1016/s0140-6736(18)33135-0] [Citation(s) in RCA: 217] [Impact Index Per Article: 43.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/26/2018] [Accepted: 12/03/2018] [Indexed: 11/25/2022]
Abstract
The purpose of this Review is to provide evidence for why gender equality in science, medicine, and global health matters for health and health-related outcomes. We present a high-level synthesis of global gender data, summarise progress towards gender equality in science, medicine, and global health, review the evidence for why gender equality in these fields matters in terms of health and social outcomes, and reflect on strategies to promote change. Notwithstanding the evolving landscape of global gender data, the overall pattern of gender equality for women in science, medicine, and global health is one of mixed gains and persistent challenges. Gender equality in science, medicine, and global health has the potential to lead to substantial health, social, and economic gains. Positioned within an evolving landscape of gender activism and evidence, our Review highlights missed and future opportunities, as well as the need to draw upon contemporary social movements to advance the field.
Collapse
Affiliation(s)
- Geordan Shannon
- Centre for Gender and Global Health, Institute for Global Health, University College London, London, UK.
| | - Melanie Jansen
- Paediatric Intensive Care Unit and Centre for Children's Health Ethics and Law, Children's Health Queensland, Brisbane, QLD, Australia
| | | | - Carlos Cáceres
- Centro de Investigación Interdisciplinaria en Sexualidad, Sida y Sociedad, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Angelica Motta
- Centro de Investigación Interdisciplinaria en Sexualidad, Sida y Sociedad, Universidad Peruana Cayetano Heredia, Lima, Peru
| | | | | | - Jenevieve Mannell
- Centre for Gender and Global Health, Institute for Global Health, University College London, London, UK
| |
Collapse
|
26
|
Haq IU, Abd-Alla A, Tomas US, Meza JS, Bourtzis K, Cáceres C. Cryopreservation of the Mediterranean fruit fly (Diptera: Tephritidae) VIENNA 8 genetic sexing strain: No effect on large scale production of high quality sterile males for SIT applications. PLoS One 2019; 14:e0211259. [PMID: 30682129 PMCID: PMC6347287 DOI: 10.1371/journal.pone.0211259] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 01/10/2019] [Indexed: 11/19/2022] Open
Abstract
The sterile insect technique (SIT) integrated in area-wide integrated pest management (AW-IPM) programmes is being used for the successful management of the Mediterranean fruit fly Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) which is a horticultural pest of economic importance in tropical and subtropical countries. All programmes with an SIT component are using the VIENNA genetic sexing strains (GSS), mainly the VIENNA 8 GSS, which have been developed by applying classical genetic approaches. The VIENNA 8 GSS carries two selectable markers, the white pupae and the temperature sensitive lethal genes, which allows the production and release of only males thus increasing the biological efficiency and cost effectiveness of SIT applications. However, mass rearing may affect quality traits of the GSS, in which case replenishment of the colony with wild flies is recommended, a process which is tedious and time consuming. We previously reported the development of a cryopreservation protocol for the VIENNA 8D53+ strain. In the present study, we report on the evaluation of the cryopreserved strain VIENNA 8D53+/Cryo-228L, reared under semi mass rearing conditions, for production parameters, quality control indices and mating competitiveness of males, in a comparative way with the non-cryopreserved VIENNA 8D53+ strain, against wild type males. The VIENNA 8D53+ and VIENNA 8D53+/Cryo-228L strains were similar for production parameters viz. egg production, pupal production, pupal recovery, and quality control indices like fly emergence, sex ratio and flight ability. Males from both strains were equally competitive with males of the wild type strain in achieving mating with wild type females under field cage conditions. Results are discussed in the context of cryopreservation as a potential backup strategy for refreshing the mass rearing colony with biological material from a cryopreserved stock.
Collapse
Affiliation(s)
- Ihsan ul Haq
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Austria
- National Agricultural Research Centre, Park Road Islamabad, Pakistan
- * E-mail:
| | - Adly Abd-Alla
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Austria
| | - Ulysses Sto Tomas
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Austria
| | - Jose Salvador Meza
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Austria
- Programa Moscafrut, SAGARPA-IICA, Metapa de Domínguez, Chiapas, México
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Austria
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Austria
| |
Collapse
|
27
|
Meza JS, ul Haq I, Vreysen MJB, Bourtzis K, Kyritsis GA, Cáceres C. Comparison of classical and transgenic genetic sexing strains of Mediterranean fruit fly (Diptera: Tephritidae) for application of the sterile insect technique. PLoS One 2018; 13:e0208880. [PMID: 30550598 PMCID: PMC6294381 DOI: 10.1371/journal.pone.0208880] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 11/27/2018] [Indexed: 11/22/2022] Open
Abstract
The development of genetic sexing strains (GSSs) based on classical genetic approaches has revolutionized the application of the sterile insect technique (SIT) against the Mediterranean fruit fly Ceratitis capitata (Wiedemann) (Diptera: Tephritidae). The global use of Mediterranean fruit fly GSS for SIT applications as part of area-wide integrated pest management (AW-IPM) programmes is testimony to their effectiveness. During recent years, transgenic sexing strains (TSSs) have been developed through genetic engineering techniques offering the possibility to produce male-only progeny by introducing female embryonic lethal genes and to increase the efficacy to identify released sterile males by means of the expression of fluorescent transgene markers. Here, we present a comparative analysis of two Mediterranean fruit fly strains: the classical GSS VIENNA 8D53-/Toliman and the transgenic FSEL#32. The strains were compared for production efficiency and quality control indices under semi mass-rearing conditions, response to sterilizing irradiation doses, male mating performance in walk-in field cages, and production cost of male-only pupae. The results showed that, the FSEL #32 TSS had a similar fecundity but a higher production of male-only pupae than the VIENNA 8D53-/Toliman GSS. For some of the quality control parameters tested, such as pupal weight and survival under starvation conditions, the FSEL #32 TSS was inferior to the VIENNA 8D53-/Toliman GSS. Both the transgenic and the classical genetic sexing strains have shown acceptable and similar mating competitiveness when compared with wild males for mating with wild females. The cost production for both strains is similar but the FSEL#32 TSS may potentially be more cost effective at higher production levels. The results are discussed in the context of incorporating the transgenic strain for SIT application.
Collapse
Affiliation(s)
- José S. Meza
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
- Programa Moscafrut, SAGARPA-IICA, Metapa de Domínguez, Chiapas, México
- * E-mail:
| | - Ihsan ul Haq
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
- National Agricultural Research Centre, Islamabad, Pakistan
| | - Marc J. B. Vreysen
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
| | - Georgios A. Kyritsis
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
| |
Collapse
|
28
|
Ramírez-Santos E, Rendón P, Bourtzis K, Schetelig MF, Cáceres C, Targovska A, Rehling T, Guillén-Navarro GK, Ruiz-Montoya L, Toledo J, Liedo P. Evaluation of horizontal gene transfer risk between the Mediterranean fruit fly Ceratitis capitata (Tephritidae) and its parasitoid Fopius ceratitivorus (Braconidae). PLoS One 2018; 13:e0207999. [PMID: 30513101 PMCID: PMC6279227 DOI: 10.1371/journal.pone.0207999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 11/11/2018] [Indexed: 11/18/2022] Open
Abstract
The transgenic strain of the Mediterranean fruit fly (medfly), Ceratitis capitata (Wied.) VIENNA 8 1260, developed from the classical genetic sexing strain VIENNA 8, has two molecular markers that exhibit red fluorescence in the body and green fluorescence in testicles and sperm. These traits offer a precise tool to discriminate between mass-reared sterile males and wild fertile males, and they could potentially increase the effectiveness of control programs for this pest. To assess the risk of horizontal transfer of the fluorescence transgenes in natural ecosystems, we used the VIENNA 8 1260 strain and the medfly parasitoid Fopius ceratitivorus. The fluorescence signal and the inheritance of the fluorescence gene markers were monitored for over 16 generations (about two years) in both species using fluorescence microscopy and a PCR-based assay. The PCR analysis was performed in four independent laboratories. Both fluorescence microscopy and PCR analysis indicated that no horizontal gene transfer of the DsRed transgene occurred during 16 generations of medfly parasitoid rearing under experimental conditions.
Collapse
Affiliation(s)
- Edwin Ramírez-Santos
- El Colegio de la Frontera Sur (ECOSUR), Carretera Antiguo Aeropuerto Km. 2.5, Tapachula, Chiapas, Mexico
- Laboratorio El Pino, Programa MOSCAMED, Km. 47.5 carretera a El Salvador, Parque Nacional Laguna El Pino, Santa Rosa, Guatemala
- * E-mail:
| | | | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Austria
| | - Marc F. Schetelig
- Institute for Insect Biotechnology, Justus-Liebig-University Gießen, Gießen, Germany
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Austria
| | - Asya Targovska
- Insect Pest Control Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Seibersdorf, Austria
| | - Tanja Rehling
- Institute for Insect Biotechnology, Justus-Liebig-University Gießen, Gießen, Germany
| | | | - Lorena Ruiz-Montoya
- El Colegio de la Frontera Sur (ECOSUR), Carretera Panamericana y Periférico Sur s/n, San Cristóbal de Las Casas, Chiapas, Mexico
| | - Jorge Toledo
- El Colegio de la Frontera Sur (ECOSUR), Carretera Antiguo Aeropuerto Km. 2.5, Tapachula, Chiapas, Mexico
| | - Pablo Liedo
- El Colegio de la Frontera Sur (ECOSUR), Carretera Antiguo Aeropuerto Km. 2.5, Tapachula, Chiapas, Mexico
| |
Collapse
|
29
|
Ahmad S, Haq IU, Cáceres C, Sto Tomas U, Dammalage T, Gembinsky K, Paulus H, Vreysen MJB, Rempoulakis P. One for all: Mating compatibility among various populations of olive fruit fly (Diptera: Tephritidae) for application of the sterile insect technique. PLoS One 2018; 13:e0206739. [PMID: 30383856 PMCID: PMC6211715 DOI: 10.1371/journal.pone.0206739] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 10/18/2018] [Indexed: 11/18/2022] Open
Abstract
The olive fruit fly, Bactrocera oleae (Rossi), is the most important insect pest for the cultivation of olives worldwide. Considerable research efforts have been invested in the past decades to develop eradication or suppression tactics for use within an area-wide integrated pest management (AW-IPM) approach that includes a sterile insect technique (SIT) component. One of the major obstacles encountered in the development of SIT for olive fruit fly was the inferior quality of the mass-reared flies, expressed among others evident primarily by sterile males having a different timing of peak mating and a lower mating propensity in comparison with their wild counterparts. In this study we assessed the mating behaviour and mating compatibility of olive fruit flies originating from four countries of the Mediterranean region (Croatia, France, Italy, Spain) in walk-in field cages and post zygotic compatibility (expressed as % egg hatch) under laboratory conditions. Furthermore, we tested the hypothesis whether a hybrid strain (Greece (domesticated)/Israel (wild)) adapted to laboratory rearing conditions showed any mating barriers with all the four "wild" populations. Finally, we examined the effect of colonization on the mating compatibility of the four newly established populations over three consecutive generations. The results showed no pre-zygotic (mating barriers) or post-zygotic isolations (measured by egg hatch%) among the olive fruit fly populations from the four countries tested. Also, there was no evidence of mating barriers between the hybrid strain and the wild populations of the Mediterranean region.
Collapse
Affiliation(s)
- Sohel Ahmad
- Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Laboratory, Vienna, Austria
- University of Vienna, Wien, Austria
- * E-mail:
| | - Ihsan ul Haq
- National Agricultural Research Centre, Islamabad, Pakistan
| | - Carlos Cáceres
- Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Laboratory, Vienna, Austria
| | - Ulysses Sto Tomas
- Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Laboratory, Vienna, Austria
| | - Thilakasiri Dammalage
- Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Laboratory, Vienna, Austria
| | - Keke Gembinsky
- Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Laboratory, Vienna, Austria
| | | | - Marc J. B. Vreysen
- Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Insect Pest Control Laboratory, Vienna, Austria
| | | |
Collapse
|
30
|
Nikolouli K, Colinet H, Renault D, Enriquez T, Mouton L, Gibert P, Sassu F, Cáceres C, Stauffer C, Pereira R, Bourtzis K. Sterile insect technique and Wolbachia symbiosis as potential tools for the control of the invasive species Drosophila suzukii. J Pest Sci (2004) 2017; 91:489-503. [PMID: 29568248 PMCID: PMC5847143 DOI: 10.1007/s10340-017-0944-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 11/30/2017] [Accepted: 12/02/2017] [Indexed: 05/27/2023]
Abstract
Drosophila suzukii, a vinegar fly originated from Southeast Asia, has recently invaded western countries, and it has been recognized as an important threat of a wide variety of several commercial soft fruits. This review summarizes the current information about the biology and dispersal of D. suzukii and discusses the current status and prospects of control methods for the management of this pest. We highlight current knowledge and ongoing research on innovative environmental-friendly control methods with emphasis on the sterile insect technique (SIT) and the incompatible insect technique (IIT). SIT has been successfully used for the containment, suppression or even eradication of populations of insect pests. IIT has been proposed as a stand-alone tool or in conjunction with SIT for insect pest control. The principles of SIT and IIT are reviewed, and the potential value of each approach in the management of D. suzukii is analyzed. We thoroughly address the challenges of SIT and IIT, and we propose the use of SIT as a component of an area-wide integrated pest management approach to suppress D. suzukii populations. As a contingency plan, we suggest a promising alternative avenue through the combination of these two techniques, SIT/IIT, which has been developed and is currently being tested in open-field trials against Aedes mosquito populations. All the potential limiting factors that may render these methods ineffective, as well as the requirements that need to be fulfilled before their application, are discussed.
Collapse
Affiliation(s)
- Katerina Nikolouli
- Department of Forest and Soil Sciences, Boku, University of Natural Resources and Life Sciences, Vienna, Austria
- Insect Pest Control Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Wagramerstrasse 5, PO Box 100, 1400 Vienna, Austria
| | - Hervé Colinet
- UMR ECOBIO CNRS 6553, Université de Rennes, 1, 263 AVE du Général Leclerc, 35042 Rennes Cedex, France
| | - David Renault
- UMR ECOBIO CNRS 6553, Université de Rennes, 1, 263 AVE du Général Leclerc, 35042 Rennes Cedex, France
- Institut Universitaire de France, 1 rue Descartes, 75231 Paris, Cedex 05, France
| | - Thomas Enriquez
- UMR ECOBIO CNRS 6553, Université de Rennes, 1, 263 AVE du Général Leclerc, 35042 Rennes Cedex, France
| | - Laurence Mouton
- Laboratoire de Biométrie et Biologie Evolutive, Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, 69100 Villeurbanne, France
| | - Patricia Gibert
- Laboratoire de Biométrie et Biologie Evolutive, Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, 69100 Villeurbanne, France
| | - Fabiana Sassu
- Department of Forest and Soil Sciences, Boku, University of Natural Resources and Life Sciences, Vienna, Austria
- Insect Pest Control Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Wagramerstrasse 5, PO Box 100, 1400 Vienna, Austria
| | - Carlos Cáceres
- Insect Pest Control Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Wagramerstrasse 5, PO Box 100, 1400 Vienna, Austria
| | - Christian Stauffer
- Department of Forest and Soil Sciences, Boku, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Rui Pereira
- Insect Pest Control Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Wagramerstrasse 5, PO Box 100, 1400 Vienna, Austria
| | - Kostas Bourtzis
- Insect Pest Control Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Wagramerstrasse 5, PO Box 100, 1400 Vienna, Austria
| |
Collapse
|
31
|
Kyritsis GA, Augustinos AA, Cáceres C, Bourtzis K. Medfly Gut Microbiota and Enhancement of the Sterile Insect Technique: Similarities and Differences of Klebsiella oxytoca and Enterobacter sp. AA26 Probiotics during the Larval and Adult Stages of the VIENNA 8 D53+ Genetic Sexing Strain. Front Microbiol 2017; 8:2064. [PMID: 29163379 PMCID: PMC5663728 DOI: 10.3389/fmicb.2017.02064] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/09/2017] [Indexed: 11/13/2022] Open
Abstract
The Mediterranean fruit fly, Ceratitis capitata, is a major agricultural pest worldwide. The development of genetic sexing strains (GSSs) for this species that allows male-only sterile insects releases has boosted the effectiveness of the environmental friendly pest control method known as the sterile insect technique. The last generation of these strains, the VIENNA 7 and VIENNA 8, are currently used in all mass rearing facilities worldwide and are considered as models for such pest control applications. The sterile insect technique depends on the rearing of sufficient numbers of adequate "biological quality" laboratory flies to be released in the field. Currently, there is an increasing amount of studies focusing on the characterization of the symbiotic communities and development of probiotic diets. In our study, two bacterial isolates, an Enterobacter sp. (strain AA26) and a Klebsiella oxytoca strain, were used as probiotics in larval and adult diet. These strains have been shown to be beneficial, affecting several aspects related to the rearing efficiency and biological quality of the medfly VIENNA 8D53+ GSS. Our results demonstrate the effect of K. oxytoca on the developmental duration of the immature stages and, to some extent, on flight ability. On the other hand, our study does not support the presence of any beneficial effect of (a) K. oxytoca on pupal and adult recovery and adults' survival under stress conditions when provided as a larval diet supplement and (b) K. oxytoca and Enterobacter sp. AA26 on mating competitiveness when provided as adult diet supplements. Possible explanations for inconsistencies with previous studies and the need for universalizing protocols are discussed. Our findings, combined with previous studies can support the sterile insect technique, through the improvement of different aspects of mass rearing and biological properties of laboratory reared insect pests.
Collapse
Affiliation(s)
- Georgios A Kyritsis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Antonios A Augustinos
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| |
Collapse
|
32
|
Maiorana A, Kegeles S, Salazar X, Konda K, Silva-Santiesteban A, Cáceres C. 'Proyecto Orgullo', an HIV prevention, empowerment and community mobilisation intervention for gay men and transgender women in Callao/Lima, Peru. Glob Public Health 2016; 11:1076-92. [PMID: 27373578 PMCID: PMC5034735 DOI: 10.1080/17441692.2016.1161814] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We used qualitative, quantitative, and observational methods to assess the feasibility, acceptability, and potential efficacy of Proyecto Orgullo (PO), a pilot community mobilisation intervention to decrease sexual risk, promote health-seeking behaviours, and facilitate personal and community empowerment among gay men (GM) and transgender women (TW) in Peru. PO was adapted from Mpowerment and Hermanos de Luna y Sol, two US interventions. PO included six interrelated core elements: (1) Self-reflection Small Group sessions; (2) Supporting peers in HIV prevention; (3) Mobilisation Activities addressing HIV, GM/TW issues, and community empowerment; (4) A Core Group (staff + GM/TW volunteers) designing/implementing those activities; (5) A Project Space; (6) Publicity. PO included specific components for TW, but promoted that GM/TW, who historically have not worked well together, collaborate for a common goal. We found that PO was embraced by GM/TW. PO positively influenced GM/TW's HIV prevention beliefs, self-efficacy, and behaviours; provided social support and created community; facilitated individual and community empowerment; achieved that GM/TW collaborate; and established a functional Community Centre for socialising/conducting mobilisation activities. Community mobilisation strategies, lacking from HIV prevention efforts in Peru but considered key to HIV prevention, can help improve health-seeking behaviours and consolidate social norms supporting preventive behaviours among GM/TW.
Collapse
Affiliation(s)
- Andre Maiorana
- Center for AIDS Prevention Studies, University of California San Francisco, San Francisco, US
| | - Susan Kegeles
- Center for AIDS Prevention Studies, University of California San Francisco, San Francisco, US
| | - Ximena Salazar
- Unit of Health, Sexuality and Human Development, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Kelika Konda
- Department of Medicine, University of California Los Angeles, Los Angeles, US
| | | | - Carlos Cáceres
- Unit of Health, Sexuality and Human Development, Universidad Peruana Cayetano Heredia, Lima, Peru
| |
Collapse
|
33
|
Cáceres C, Canfarotta F, Chianella I, Pereira E, Moczko E, Esen C, Guerreiro A, Piletska E, Whitcombe MJ, Piletsky SA. Does size matter? Study of performance of pseudo-ELISAs based on molecularly imprinted polymer nanoparticles prepared for analytes of different sizes. Analyst 2016; 141:1405-12. [DOI: 10.1039/c5an02018b] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we evaluate whether the size of the template used to produce molecularly imprinted nanoparticles can affect their performance in pseudo-ELISAs.
Collapse
Affiliation(s)
- C. Cáceres
- Department of Analytical and Inorganic Chemistry
- Faculty of Chemical Sciences
- University of Concepcion
- Chile
| | - F. Canfarotta
- MIP Diagnostics Ltd
- University of Leicester
- Leicester LE1 7RH
- UK
| | - I. Chianella
- Biotechnology Centre
- Cranfield University
- Cranfield
- UK
| | - E. Pereira
- Department of Analytical and Inorganic Chemistry
- Faculty of Chemical Sciences
- University of Concepcion
- Chile
| | - E. Moczko
- Chemistry Department
- College of Science and Engineering
- University of Leicester
- UK
| | - C. Esen
- Department of Chemistry
- Faculty of Arts and Sciences
- Adnan Menderes University
- 09010 Aydin
- Turkey
| | - A. Guerreiro
- Chemistry Department
- College of Science and Engineering
- University of Leicester
- UK
| | - E. Piletska
- Chemistry Department
- College of Science and Engineering
- University of Leicester
- UK
| | - M. J. Whitcombe
- Chemistry Department
- College of Science and Engineering
- University of Leicester
- UK
| | - S. A. Piletsky
- Chemistry Department
- College of Science and Engineering
- University of Leicester
- UK
| |
Collapse
|
34
|
Augustinos AA, Drosopoulou E, Gariou-Papalexiou A, Asimakis ED, Cáceres C, Tsiamis G, Bourtzis K, Penelope Mavragani-Tsipidou, Zacharopoulou A. Cytogenetic and symbiont analysis of five members of the B. dorsalis complex (Diptera, Tephritidae): no evidence of chromosomal or symbiont-based speciation events. Zookeys 2015:273-98. [PMID: 26798263 PMCID: PMC4714073 DOI: 10.3897/zookeys.540.9857] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 07/20/2015] [Indexed: 11/26/2022] Open
Abstract
The Bactroceradorsalis species complex, currently comprising about 90 entities has received much attention. During the last decades, considerable effort has been devoted to delimiting the species of the complex. This information is of great importance for agriculture and world trade, since the complex harbours several pest species of major economic importance and other species that could evolve into global threats. Speciation in Diptera is usually accompanied by chromosomal rearrangements, particularly inversions that are assumed to reduce/eliminate gene flow. Other candidates currently receiving much attention regarding their possible involvement in speciation are reproductive symbionts, such as Wolbachia, Spiroplasma, Arsenophonus, Rickettsia and Cardinium. Such symbionts tend to spread quickly through natural populations and can cause a variety of phenotypes that promote pre-mating and/or post-mating isolation and, in addition, can affect the biology, physiology, ecology and evolution of their insect hosts in various ways. Considering all these aspects, we present: (a) a summary of the recently gained knowledge on the cytogenetics of five members of the Bactroceradorsalis complex, namely Bactroceradorsaliss.s., Bactrocerainvadens, Bactroceraphilippinensis, Bactrocerapapayae and Bactroceracarambolae, supplemented by additional data from a Bactroceradorsaliss.s. colony from China, as well as by a cytogenetic comparison between the dorsalis complex and the genetically close species, Bactroceratryoni, and, (b) a reproductive symbiont screening of 18 different colonized populations of these five taxa. Our analysis did not reveal any chromosomal rearrangements that could differentiate among them. Moreover, screening for reproductive symbionts was negative for all colonies derived from different geographic origins and/or hosts. There are many different factors that can lead to speciation, and our data do not support chromosomal and/or symbiotic-based speciation phenomena in the taxa under study.
Collapse
Affiliation(s)
- Antonios A Augustinos
- Department of Biology, University of Patras, Patras, Greece; Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria; Department of Environmental and Natural Resources Management, University of Patras, Agrinio, Greece
| | - Elena Drosopoulou
- Department of Genetics, Development and Molecular Biology, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Elias D Asimakis
- Department of Environmental and Natural Resources Management, University of Patras, Agrinio, Greece
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
| | - George Tsiamis
- Department of Environmental and Natural Resources Management, University of Patras, Agrinio, Greece
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
| | - Penelope Mavragani-Tsipidou
- Department of Genetics, Development and Molecular Biology, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | |
Collapse
|
35
|
Juárez ML, Devescovi F, Břízová R, Bachmann G, Segura DF, Kalinová B, Fernández P, Ruiz MJ, Yang J, Teal PEA, Cáceres C, Vreysen MJB, Hendrichs J, Vera MT. Evaluating mating compatibility within fruit fly cryptic species complexes and the potential role of sex pheromones in pre-mating isolation. Zookeys 2015:125-55. [PMID: 26798257 PMCID: PMC4714067 DOI: 10.3897/zookeys.540.6133] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 09/13/2015] [Indexed: 11/23/2022] Open
Abstract
The study of sexual behavior and the identification of the signals involved in mate recognition between con-specifics are key components that can shed some light, as part of an integrative taxonomic approach, in delimitating species within species complexes. In the Tephritidae family several species complexes have received particular attention as they include important agricultural pests such as the Ceratitisfasciventris (Bezzi), Ceratitisanonae (Graham) and Ceratitisrosa Karsch (FAR) complex, the Bactroceradorsalis (Hendel) complex and the Anastrephafraterculus (Wiedemann) complex. Here the value and usefulness of a methodology that uses walk-in field cages with host trees to assess, under semi-natural conditions, mating compatibility within these complexes is reviewed, and the same methodology to study the role of chemical communication in pre-mating isolation among Anastrephafraterculus populations is used. Results showed that under the same experimental conditions it was possible to distinguish an entire range of different outcomes: from full mating compatibility among some populations to complete assortative mating among others. The effectiveness of the methodology in contributing to defining species limits was shown in two species complexes: Anastrephafraterculus and Bactroceradorsalis, and in the case of the latter the synonymization of several established species was published. We conclude that walk-in field cages constitute a powerful tool to measure mating compatibility, which is also useful to determine the role of chemical signals in species recognition. Overall, this experimental approach provides a good source of information about reproductive boundaries to delimit species. However, it needs to be applied as part of an integrative taxonomic approach that simultaneously assesses cytogenetic, molecular, physiological and morphological traits in order to reach more robust species delimitations.
Collapse
Affiliation(s)
- M Laura Juárez
- Cátedra Terapéutica Vegetal, Facultad de Agronomía y Zootecnia (FAZ), Universidad Nacional de Tucumán (UNT), San Miguel de Tucumán; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Francisco Devescovi
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Argentina
| | - Radka Břízová
- Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic
| | - Guillermo Bachmann
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Argentina
| | - Diego F Segura
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Argentina
| | - Blanka Kalinová
- Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic
| | - Patricia Fernández
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Argentina
| | - M Josefina Ruiz
- Cátedra Terapéutica Vegetal, Facultad de Agronomía y Zootecnia (FAZ), Universidad Nacional de Tucumán (UNT), San Miguel de Tucumán; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | | | | | - Carlos Cáceres
- Insect Pest Control Laboratory (IPCL), Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Marc J B Vreysen
- Insect Pest Control Laboratory (IPCL), Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Jorge Hendrichs
- Insect Pest Control Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - M Teresa Vera
- Cátedra Terapéutica Vegetal, Facultad de Agronomía y Zootecnia (FAZ), Universidad Nacional de Tucumán (UNT), San Miguel de Tucumán; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| |
Collapse
|
36
|
Cáceres C. PL06.1 Legal and human rights dimensions of hiv and sti: historical background and policy implications. Br J Vener Dis 2015. [DOI: 10.1136/sextrans-2015-052270.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
37
|
Augustinos AA, Kyritsis GA, Papadopoulos NT, Abd-Alla AMM, Cáceres C, Bourtzis K. Exploitation of the Medfly Gut Microbiota for the Enhancement of Sterile Insect Technique: Use of Enterobacter sp. in Larval Diet-Based Probiotic Applications. PLoS One 2015; 10:e0136459. [PMID: 26325068 PMCID: PMC4556606 DOI: 10.1371/journal.pone.0136459] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 08/03/2015] [Indexed: 12/21/2022] Open
Abstract
The Mediterranean fruit fly (medfly), Ceratitis capitata, is a pest of worldwide substantial economic importance, as well as a Tephritidae model for sterile insect technique (SIT) applications. The latter is partially due to the development and utilization of genetic sexing strains (GSS) for this species, such as the Vienna 8 strain, which is currently used in mass rearing facilities worldwide. Improving the performance of such a strain both in mass rearing facilities and in the field could significantly enhance the efficacy of SIT and reduce operational costs. Recent studies have suggested that the manipulation of gut symbionts can have a significant positive effect on the overall fitness of insect strains. We used culture-based approaches to isolate and characterize gut-associated bacterial species of the Vienna 8 strain under mass rearing conditions. We also exploited one of the isolated bacterial species, Enterobacter sp., as dietary supplement (probiotic) to the larval diet, and we assessed its effects on fitness parameters under the standard operating procedures used in SIT operational programs. Probiotic application of Enterobacter sp. resulted in improvement of both pupal and adult productivity, as well as reduced rearing duration, particularly for males, without affecting pupal weight, sex ratio, male mating competitiveness, flight ability and longevity under starvation.
Collapse
Affiliation(s)
- Antonios A. Augustinos
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
- Department of Environmental and Natural Resources Management, University of Patras, Agrinio, Greece
| | - Georgios A. Kyritsis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
- Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, N. Ionia Magnisia, Greece
| | - Nikos T. Papadopoulos
- Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, N. Ionia Magnisia, Greece
| | - Adly M. M. Abd-Alla
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
| | - Carlos Cáceres
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, Vienna, Austria
- * E-mail:
| |
Collapse
|
38
|
Bórquez A, Silva-Santisteban A, Guanira J, Salazar X, Caballero P, Nunes-Curto A, Motta A, Castillo R, Bracamonte P, Benites C, Minaya P, Hallett T, Cáceres C. O12.4 Impact and cost-effectiveness of hiv prevention interventions among transgender women sex-workers in lima, peru using mathematical modelling informed by stakeholder analysis and health system capacity evaluation. Br J Vener Dis 2015. [DOI: 10.1136/sextrans-2015-052270.145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
39
|
Parker R, Cáceres C, Pecheny M, Aggleton P. Sex in the marketplace--what has love got to do with it? Cult Health Sex 2015; 17 Suppl 1:S1-S4. [PMID: 26050704 DOI: 10.1080/13691058.2015.1009254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
|
40
|
Bo W, Ahmad S, Dammalage T, Tomas US, Wornoayporn V, Ul Haq I, Cáceres C, Vreysen MJB, Schutze MK. Mating compatibility between Bactrocera invadens and Bactrocera dorsalis (Diptera: Tephritidae). J Econ Entomol 2014; 107:623-629. [PMID: 24772542 DOI: 10.1603/ec13514] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The invasive fruit fly, Bactrocera invadens Drew, Tsuruta & White, is a highly polyphagous fruit pest that occurs predominantly in Africa yet has its origins in the Indian subcontinent. It is extremely morphologically and genetically similar to the Oriental fruit fly, Bactrocera dorsalis (Hendel); as such the specific relationship between these two species is unresolved. We assessed prezygotic compatibility between B. dorsalis and B. invadens using standardized field cage mating tests, which have proven effectiveness in tephritid cryptic species studies. These tests were followed by an assessment of postzygotic compatibility by examining egg viability, larval and pupal survival, and sex ratios of offspring produced from parental and subsequent F1 crosses to examine for hybrid breakdown as predicted under a two-species hypothesis. B. dorsalis was sourced from two countries (Pakistan and China), and each population was compared with B. invadens from its type locality of Kenya. B. invadens mated randomly with B. dorsalis from both localities, and there were generally high levels of hybrid viability and survival resulting from parental and F1 crosses. Furthermore, all but one hybrid cross resulted in equal sex ratios, with the single deviation in favor of males and contrary to expectations under Haldane's rule. These data support the hypothesis that B. dorsalis and B. invadens represent the same biological species, an outcome that poses significant implications for pest management and international trade for sub-Saharan Africa.
Collapse
|
41
|
Dacosta-Aguayo R, Graña M, Savio A, Fernández-Andújar M, Millán M, López-Cancio E, Cáceres C, Bargalló N, Garrido C, Barrios M, Clemente IC, Hernández M, Munuera J, Dávalos A, Auer T, Mataró M. Prognostic value of changes in resting-state functional connectivity patterns in cognitive recovery after stroke: A 3T fMRI pilot study. Hum Brain Mapp 2014; 35:3819-31. [PMID: 24523262 PMCID: PMC4282459 DOI: 10.1002/hbm.22439] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 11/02/2013] [Accepted: 11/15/2013] [Indexed: 01/17/2023] Open
Abstract
Resting‐state studies conducted with stroke patients are scarce. First objective was to explore whether patients with good cognitive recovery showed differences in resting‐state functional patterns of brain activity when compared to patients with poor cognitive recovery. Second objective was to determine whether such patterns were correlated with cognitive performance. Third objective was to assess the existence of prognostic factors for cognitive recovery. Eighteen right‐handed stroke patients and eighteen healthy controls were included in the study. Stroke patients were divided into two groups according to their cognitive improvement observed at three months after stroke. Probabilistic independent component analysis was used to identify resting‐state brain activity patterns. The analysis identified six networks: frontal, fronto‐temporal, default mode network, secondary visual, parietal, and basal ganglia. Stroke patients showed significant decrease in brain activity in parietal and basal ganglia networks and a widespread increase in brain activity in the remaining ones when compared with healthy controls. When analyzed separately, patients with poor cognitive recovery (n = 10) showed the same pattern as the whole stroke patient group, while patients with good cognitive recovery (n = 8) showed increased activity only in the default mode network and fronto‐temporal network, and decreased activity in the basal ganglia. We observe negative correlations between basal ganglia network activity and performance in Semantic Fluency test and Part A of the Trail Making Test for patients with poor cognitive recovery. A reverse pattern was observed between frontal network activity and the abovementioned tests for the same group. Hum Brain Mapp 35:3819–3831, 2014. © 2014 The Authors. Human Brain Mapping published by Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- R Dacosta-Aguayo
- Department of Psychiatry and Clinical Psychobiology, University of Barcelona, Spain; Department of CCIA, Group of Computational Intelligence, University of the Basque Country UPV/EHU, San Sebastian, Spain
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
di Mauro D, Cáceres C, Iguiñiz R, Aggleton P. Special issue: IASSCS 2013 Conference--sex and the market place: what's love got to do with it? Editorial introduction. Cult Health Sex 2013; 15 Suppl 2:S128-S136. [PMID: 23909757 DOI: 10.1080/13691058.2013.806128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
|
43
|
Martínez-Moreno JM, Solana J, Sánchez R, González S, Sánchez-González P, Gómez C, Morell M, Cáceres C, Roig T, Tormos JM, Gómez EJ. Cognitive neurorehabilitation based on interactive video technology. Stud Health Technol Inform 2013; 190:27-29. [PMID: 23823364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Cognitive impairment is the main cause of disability in developed societies. New interactive technologies help therapists in neurorehabilitation in order to increase patients' autonomy and quality of life. This work proposes Interactive Video (IV) as a technology to develop cognitive rehabilitation tasks based on Activities of Daily Living (ADL). ADL cognitive task has been developed and integrated with eye-tracking technology for task interaction and patients' performance monitoring.
Collapse
Affiliation(s)
- J M Martínez-Moreno
- Biomedical Engineering and Telemedicine Centre, ETSI Telecomunicación, Universidad Politécnica de Madrid, Spain
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Galea JT, Kinsler JJ, Salazar X, Lee SJ, Giron M, Sayles JN, Cáceres C, Cunningham WE. Acceptability of pre-exposure prophylaxis as an HIV prevention strategy: barriers and facilitators to pre-exposure prophylaxis uptake among at-risk Peruvian populations. Int J STD AIDS 2011; 22:256-62. [PMID: 21571973 DOI: 10.1258/ijsa.2009.009255] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This study examined pre-exposure prophylaxis (PrEP) acceptability among female sex workers, male-to-female transgendered persons and men who have sex with men in Lima, Peru. Focus groups explored social issues associated with PrEP acceptability and conjoint analysis assessed preferences among eight hypothetical PrEP scenarios with varying attribute profiles and their relative impact on acceptability. Conjoint analysis revealed that PrEP acceptability ranged from 19.8 to 82.5 out of a possible score of 100 across the eight hypothetical PrEP scenarios. Out-of-pocket cost had the greatest impact on PrEP acceptability (25.2, P < 0.001), followed by efficacy (21.4, P < 0.001) and potential side-effects (14.7, P < 0.001). Focus group data supported these findings, and also revealed that potential sexual risk disinhibition, stigma and discrimination associated with PrEP use, and mistrust of health-care professionals were also concerns. These issues will require careful attention when planning for PrEP roll-out.
Collapse
Affiliation(s)
- J T Galea
- Program in Global Health, David Geffen School of Medicine, University ofCalifornia, Los Angeles, CA 90035, USA.
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Ivanov VD, Cáceres C, Minniti D, Selman F, Melo C, Naef D, Mason E, Pietrzynski G. High-Cadence Transit Timing Variation Monitoring of Extrasolar Planets. EPJ Web of Conferences 2011. [DOI: 10.1051/epjconf/20101105008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
46
|
ul Haq I, Cáceres C, Hendrichs J, Teal P, Wornoayporn V, Stauffer C, Robinson AS. Effects of the juvenile hormone analogue methoprene and dietary protein on male melon fly Bactrocera cucurbitae (Diptera: Tephritidae) mating success. J Insect Physiol 2010; 56:1503-1509. [PMID: 20438735 DOI: 10.1016/j.jinsphys.2010.04.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Revised: 04/06/2010] [Accepted: 04/23/2010] [Indexed: 05/29/2023]
Abstract
The effect of access to dietary protein (P) and the topical application of a juvenile hormone analogue (methoprene (M)) on mating behaviour of male melon fly Bactrocera cucurbitae was assessed in the laboratory and in field cages. Age, dietary protein and methoprene application increased the mating success and influenced the mating behaviour. Treatment with methoprene (M+) to protein-deprived (P-) males had only a modest effect on the acceleration of sexual maturity, but application of methoprene (M+) to protein-fed (P+) males greatly accelerated sexual maturity. Protein diet (P+) increased mating success of males in comparison to protein-deprived (P-) males. Protein and methoprene have a synergistic effect on mating behaviour, since M+P+ treated males exhibit reduced mating latency and achieved higher mating in younger ages than methoprene and/or protein-deprived males. Copulation duration was correlated with nutritional status and M+P+ males copulated longer at the age of advanced sexual maturity than M-P+ males. Our results suggest that in this species with a lek mating system, females discriminate between the males based on their sexual signals, which were influenced by protein in the adult diet, methoprene application and age. The results are discussed in the light of mating competitiveness of precocious treated young males and their relevance to Sterile Insect Technique application against this pest species.
Collapse
Affiliation(s)
- Ihsan ul Haq
- FAO/IAEA Agriculture and Biotechnology Laboratories, Seibersdorf, Austria.
| | | | | | | | | | | | | |
Collapse
|
47
|
Miralbell J, Soriano JJ, López-Cancio E, Arenillas JF, Dorado L, Barrios M, Cáceres C, Alzamora MT, Torán P, Pera G, Dávalos A, Mataró M. [Vascular risk factors and cognitive performance in patients 50 to 65 years-old]. Neurologia 2010; 25:422-429. [PMID: 20964988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
INTRODUCTION Vascular risk factors (VRF) have been related to cognitive deficits and an increased risk of dementia. Cognitive impairment is considered to be one of the earliest manifestations of cerebrovascular disease. In Spain there is a high prevalence of VRF, but also one of the lowest incidences of cerebrovascular disease in Europe. This is the first study that investigates the relationship between VRF and cognition in a Spanish sample. METHODS A total of 90 people aged between 50-65 years with a low-to-moderate cardiovascular risk underwent a neuropsychological evaluation. None of them had a history of cardiovascular disease. The battery included tests assessing executive, attentional, mnesic, visuospatial and motor-speed/coordination functions. We used correlation and inter-groups comparison to relate VRF to multiple cognitive domains0120. RESULTS Higher stroke risk was significantly related to a lowered profile in visuo-constructive functions and motor-speed/coordination. Moreover, the group with moderate cardiovascular risk showed a lower performance in visuoconstructive functions compared to the low-risk group. After statistical adjustment for age, sex and years of scholarship VRF were only related to motor-speed/coordination. CONCLUSIONS In healthy, middle-aged adults, VRF are related with impairment in two cognitive domains. This effect is slight and tends to appear in people with moderate cardiovascular risk.
Collapse
Affiliation(s)
- J Miralbell
- Departamento de Psiquiatría y Psicobiología Clínica, Universidad de Barcelona, Barcelona, España
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Miralbell J, Soriano J, López-Cancio E, Arenillas J, Dorado L, Barrios M, Cáceres C, Alzamora M, Torán P, Pera G, Dávalos A, Mataró M. Factores de riesgo vascular y rendimiento cognitivo en personas de 50 a 65 años. Neurologia 2010. [DOI: 10.1016/j.nrl.2010.02.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
49
|
Martínez S, Cáceres C, Mataró M, Escudero D, Latorre P, Dávalos A. Is there progressive cognitive dysfunction in Sjögren Syndrome? A preliminary study. Acta Neurol Scand 2010; 122:182-8. [PMID: 20096020 DOI: 10.1111/j.1600-0404.2009.01293.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The aim of this study was to determine the progression of cognitive dysfunction in primary Sjögren Syndrome (SS). METHODS Twelve subjects with SS were compared with ten subjects with migraine and ten healthy controls on neuropsychological, mood and fatigue tests at baseline and 8 years later. RESULTS At follow-up, SS subjects performed below subjects with migraine on the Continuous Performance Test (CPT) but did not differ on other tasks. Compared with controls, both clinical groups obtained lower scores on simple reaction time, patients with SS obtained lower scores on the Wisconsin Card Sorting Test (WCST) and patients with migraine performed below controls on the Benton's Judgment of Line Orientation Test (JOLO). Clinical groups did not differ on cognitive changes over time, except that migraine subjects improved on verbal fluency. Compared with baseline, both SS and migraine patients were more impaired on simple reaction time, Trail Making Test part B, Stroop and JOLO. However, they showed higher scores on verbal and visual memory, WCST and CPT reaction time. SS also showed higher levels of depression and fatigue than migraine and controls, with no significant changes over time. DISCUSSION Preliminary evidence indicates some cognitive deficits in both SS and migraine following a pattern of fronto-subcortical dysfunction without a significant cognitive decline over time.
Collapse
Affiliation(s)
- S Martínez
- Neurology Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | | | | | | | | | | |
Collapse
|
50
|
Cáceres C, Cueto M, Palomino N. Policies around sexual and reproductive health and rights in Peru: conflict, biases and silence. Glob Public Health 2009; 3 Suppl 2:39-57. [PMID: 19288352 DOI: 10.1080/17441690801981159] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
This study is aimed at examining how subsequent Peruvian governments, since 1990, have addressed reproductive rights, HIV/AIDS prevention and treatment, and sexual diversity rights, as well as the drastic policy shifts and its many contradictions. Abortion and contraception consistently generated the deepest public controversies and debates, which made progress in reproductive rights difficult. HIV/AIDS was often portrayed as having the potential to affect everyone, which allowed advocates and activists to achieve some success in advancing HIV/AIDS-related rights. Sexual diversity rights, perceived as a demand made by "others", were generally trivialised and disdained by politicians, officials, and the general population. Positive changes occurred as long as the issue was given a low political and institutional profile. The analysis of policy-making and programme implementation in these three areas reveals that: (1) Weaknesses in national institutional frameworks concerning reproductive health made it possible for governments to adopt two very different (even contradictory) approaches to the issue within the past 15 years; (2) Policies were presented as rights-based in order to garner political legitimacy when, in fact, they evidenced a clear disregard for the rights of individual citizens; and (3) By favouring low-profile "public health" discourses, and marginalising "the sexual" in official policies related to sexuality, advocacy groups sometimes created opportunities for legal changes but failed to challenge conservative powers opposing the recognition of sexual and reproductive rights and the full citizenship of women and sexual minorities.
Collapse
Affiliation(s)
- C Cáceres
- Cayetano Heredia University, School of Public Health, Lima, Peru.
| | | | | |
Collapse
|