1
|
Monteiro MF, Lisboa LCO, Carvalho-Costa TM, Nevoa JC, Oliveira CJF, Serrão JE, Souza EA. Morphology of the spermatheca of Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859). BRAZ J BIOL 2018; 79:144-148. [PMID: 29590252 DOI: 10.1590/1519-6984.180932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 08/22/2017] [Indexed: 11/22/2022] Open
Abstract
Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859) is a potential vector of Chagas's disease and the comprehension of its reproductive biology is an important tool to control this insect. In the reproductive tract of female insects, the spermatheca plays a crucial role storing male spermatozoa after mating. Whithin insects the spermatheca shows a wide morphological diversity and the analysis of this characteristic can contribute to understand the reproductive biology of the species. This study describes the histology and histochemistry of the spermatheca of T. lecticularia. Females have a pair of elongated spermathecal reservoirs without associated accessory gland. The reservoir opens into the common oviduct via a narrow muscular duct. The reservoir epithelium has single layer of columnar secretory cells. The control of the release of spermatozoa from the spermatheca occurs via the muscular duct. The anatomical features of the spermatheca of T. lecticularia resemble those described of other Reduviidae. However, the histological and histochemical features of spermatheca observed in T. lecticularia were important to explain the maintenance of the viability of the spermatozoa stored.
Collapse
Affiliation(s)
- M F Monteiro
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa - UFV, Campus Rio Paranaíba, Rodovia MG 230, Km 7, CEP 38810-000, Rio Paranaíba, MG, Brasil
| | - L C O Lisboa
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa - UFV, Campus Rio Paranaíba, Rodovia MG 230, Km 7, CEP 38810-000, Rio Paranaíba, MG, Brasil
| | - T M Carvalho-Costa
- Laboratório de Imunologia, Universidade Federal do Triângulo Mineiro - UFTM, Campus I, Praça Manoel Terra, 330, 1o Piso, N.Sa. da Abadia, CEP 38025-015, Uberaba, MG, Brasil
| | - J C Nevoa
- Laboratório de Imunologia, Universidade Federal do Triângulo Mineiro - UFTM, Campus I, Praça Manoel Terra, 330, 1o Piso, N.Sa. da Abadia, CEP 38025-015, Uberaba, MG, Brasil
| | - C J F Oliveira
- Laboratório de Imunologia, Universidade Federal do Triângulo Mineiro - UFTM, Campus I, Praça Manoel Terra, 330, 1o Piso, N.Sa. da Abadia, CEP 38025-015, Uberaba, MG, Brasil
| | - J E Serrão
- Departamento de Biologia Geral, Universidade Federal de Viçosa - UFV, Avenida Peter Henry Rolfs, s/no, Campus Universitário, CEP 36570-000, Viçosa, MG, Brasil
| | - E A Souza
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa - UFV, Campus Rio Paranaíba, Rodovia MG 230, Km 7, CEP 38810-000, Rio Paranaíba, MG, Brasil
| |
Collapse
|
2
|
Nevoa JC, Mendes MT, da Silva MV, Soares SC, Oliveira CJF, Ribeiro JMC. An insight into the salivary gland and fat body transcriptome of Panstrongylus lignarius (Hemiptera: Heteroptera), the main vector of Chagas disease in Peru. PLoS Negl Trop Dis 2018; 12:e0006243. [PMID: 29462134 PMCID: PMC5834209 DOI: 10.1371/journal.pntd.0006243] [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: 11/08/2017] [Revised: 03/02/2018] [Accepted: 01/17/2018] [Indexed: 12/31/2022] Open
Abstract
Triatomines are hematophagous arthropod vectors of Trypanosoma cruzi, the causative agent of Chagas Disease. Panstrongylus lignarius, also known as Panstrongylus herreri, is considered one of the most versatile triatomines because it can parasitize different hosts, it is found in different habitats and countries, it has sylvatic, peridomestic and domestic behavior and it is a very important vector of Chagas disease, especially in Peru. Molecules produced and secreted by salivary glands and fat body are considered of important adaptational value for triatomines because, among other functions, they subvert the host haemostatic, inflammatory and immune systems and detoxify or protect them against environmental aggressors. In this context, the elucidation of the molecules produced by these tissues is highly valuable to understanding the ability of this species to adapt and transmit pathogens. Here, we use high-throughput sequencing techniques to assemble and describe the coding sequences resulting from the transcriptome of the fat body and salivary glands of P. lignarius. The final assembly of both transcriptomes together resulted in a total of 11,507 coding sequences (CDS), which were mapped from a total of 164,676,091 reads. The CDS were subdivided according to their 10 folds overexpression on salivary glands (513 CDS) or fat body (2073 CDS). Among the families of proteins found in the salivary glands, lipocalins were the most abundant. Other ubiquitous families of proteins present in other sialomes were also present in P. lignarius, including serine protease inhibitors, apyrase and antigen-5. The unique transcriptome of fat body showed proteins related to the metabolic function of this organ. Remarkably, nearly 20% of all reads mapped to transcripts coded by Triatoma virus. The data presented in this study improve the understanding on triatomines' salivary glands and fat body function and reveal important molecules used in the interplay between vectors and vertebrate hosts.
Collapse
Affiliation(s)
- Jessica C. Nevoa
- Institute of Natural and Biological Sciences, Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Maria T. Mendes
- University of Texas at El Paso, El Paso, Texas, United States of America
| | - Marcos V. da Silva
- Institute of Natural and Biological Sciences, Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Siomar C. Soares
- Institute of Natural and Biological Sciences, Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Carlo J. F. Oliveira
- Institute of Natural and Biological Sciences, Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - José M. C. Ribeiro
- National Institute of Allergy and Infectious Diseases (NIAID), Laboratory of Malaria and Vector Research (LMVR), Rockville, Maryland, United States of America
- * E-mail:
| |
Collapse
|