Fecundity and morphological description of the eggs of Psorophora cyanescens (Coquillett, 1902) (Diptera: Culicidae) by scanning electron microscopy
Taxonomic studies on mosquitoes are based on the morphological description of larvae and adults. However, few studies have focused on the morphological description of eggs despite their taxonomic value. The description of mosquito eggs by scanning electron microscopy (SEM) allows more detailed descr...
| Main Authors: | , , , , , |
|---|---|
| Format: | Online |
| Language: | eng spa |
| Published: |
Instituto de Ecología, A.C.
2022
|
| Online Access: | https://azm.ojs.inecol.mx/index.php/azm/article/view/2449 |
| _version_ | 1799770436155736064 |
|---|---|
| author | García-Rejón, Julián E. Tzuc-Dzul, Julio C. Cigarroa-Toledo, Nohemi Talavera-Aguilar, Lourdes G. Cetina-Trejo, Rosa C. Baak-Baak, Carlos M. |
| author_facet | García-Rejón, Julián E. Tzuc-Dzul, Julio C. Cigarroa-Toledo, Nohemi Talavera-Aguilar, Lourdes G. Cetina-Trejo, Rosa C. Baak-Baak, Carlos M. |
| author_sort | García-Rejón, Julián E. |
| collection | AZM |
| description | Taxonomic studies on mosquitoes are based on the morphological description of larvae and adults. However, few studies have focused on the morphological description of eggs despite their taxonomic value. The description of mosquito eggs by scanning electron microscopy (SEM) allows more detailed descriptions of the ornamentation of the egg, which can provide diagnostic characters of the species. The objective of the work was to describe the eggs of Psorophora cyanescens by SEM and provide fecundity data for the species. In general, Ps. cyanescens eggs are elliptical and very wide. The exochorion is characterized by polygon pattern, where each polygon consists of longitudinal ridges joined by cross-ridges defining regular "hexagonal" areas. Each longitudinal ridge consisting by a small tubercle. The small tubercles are irregular, rectangular, rounded, or tubular. The ornamentation of the exochorion also has long and conical tubercles throughout the egg region. The micropylar apparatus located in the anterior region of the egg has a prominent, continuous and thickness collar. Psorophora cyanescens laid mature eggs at 2.5 days post-feeding. The mean number of eggs per female was 82.20 (± 13.31). This is the first study that describes the ultrastructure of the morphology of the eggs of Ps. cyanescens by SEM. With the contribution of the present work, there are five species of the genus Psorophora whose eggs morphology is described by SEM: Ps. albigenu, Ps. albipes, Ps. columbiae, Ps. cyanescens, and Ps. ferox. |
| format | Online |
| id | azm-article-2449 |
| institution | Acta Zoológica Mexicana |
| language | eng spa |
| publishDate | 2022 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | azm-article-24492022-12-05T19:41:13Z Fecundity and morphological description of the eggs of Psorophora cyanescens (Coquillett, 1902) (Diptera: Culicidae) by scanning electron microscopy Fecundity and morphological description of the eggs of Psorophora cyanescens (Coquillett, 1902) (Diptera: Culicidae) by scanning electron microscopy García-Rejón, Julián E. Tzuc-Dzul, Julio C. Cigarroa-Toledo, Nohemi Talavera-Aguilar, Lourdes G. Cetina-Trejo, Rosa C. Baak-Baak, Carlos M. Culicidae Scanning Electron Microscopy SEM mosquitoes Mexico Culicidae Microscopía Electrónica de Barrido MEB mosquitos México Taxonomic studies on mosquitoes are based on the morphological description of larvae and adults. However, few studies have focused on the morphological description of eggs despite their taxonomic value. The description of mosquito eggs by scanning electron microscopy (SEM) allows more detailed descriptions of the ornamentation of the egg, which can provide diagnostic characters of the species. The objective of the work was to describe the eggs of Psorophora cyanescens by SEM and provide fecundity data for the species. In general, Ps. cyanescens eggs are elliptical and very wide. The exochorion is characterized by polygon pattern, where each polygon consists of longitudinal ridges joined by cross-ridges defining regular "hexagonal" areas. Each longitudinal ridge consisting by a small tubercle. The small tubercles are irregular, rectangular, rounded, or tubular. The ornamentation of the exochorion also has long and conical tubercles throughout the egg region. The micropylar apparatus located in the anterior region of the egg has a prominent, continuous and thickness collar. Psorophora cyanescens laid mature eggs at 2.5 days post-feeding. The mean number of eggs per female was 82.20 (± 13.31). This is the first study that describes the ultrastructure of the morphology of the eggs of Ps. cyanescens by SEM. With the contribution of the present work, there are five species of the genus Psorophora whose eggs morphology is described by SEM: Ps. albigenu, Ps. albipes, Ps. columbiae, Ps. cyanescens, and Ps. ferox. Los estudios taxonómicos sobre mosquitos se basan en la descripción morfológica de larvas y adultos. Sin embargo, son pocos los estudios enfocados en la descripción morfológica de los huevos a pesar de su valor taxonómico. La descripción de los huevos de mosquitos mediante microscopía electrónica de barrido (MEB) permite obtener imágenes más detalladas de la ornamentación del huevo, los cuales pueden proporcionar caracteres diagnósticos de la especie. El objetivo del trabajo fue describir los huevos de Psorophora cyanescens por MEB y proporcionar datos de fecundidad de la especie. En general, los huevos de Ps. cyanescens son de forma elíptica y muy anchos. El exocorión se caracteriza por un patrón de polígono, donde cada polígono consta de crestas longitudinales unidas por crestas cruzadas que definen áreas "hexagonales" regulares. Cada cresta longitudinal consiste en un pequeño tubérculo. Los pequeños tubérculos son irregulares, rectangulares, redondeados o tubulares. La ornamentación del exocorión también presenta largos tubérculos cónicos en toda la región del huevo. El aparato micropilar ubicado en la región anterior del huevo tiene un collar prominente, continuo y grueso. Psorophora cyanescens puso huevos maduros a los 2.5 días después de la alimentación sanguínea. El número promedio de huevos por hembra fue de 82.20 (± 13.31). Este es el primer estudio que describe la ultraestructura de la morfología de los huevos de Ps. cyanescens mediante MEB. Con el aporte del presente trabajo, son cinco las especies del género Psorophora que cuentan con la descripción de la morfología de los huevos mediante MEB: Ps. albigenu, Ps. albipes, Ps. columbiae, Ps. cyanescens, and Ps. ferox. Instituto de Ecología, A.C. 2022-05-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Original articles Artículos originales application/pdf text/xml https://azm.ojs.inecol.mx/index.php/azm/article/view/2449 10.21829/azm.2022.3812449 ACTA ZOOLÓGICA MEXICANA (N.S.); Vol. 38 (2022); 1-9 ACTA ZOOLÓGICA MEXICANA (N.S.); Vol. 38 (2022); 1-9 2448-8445 0065-1737 eng spa https://azm.ojs.inecol.mx/index.php/azm/article/view/2449/2906 https://azm.ojs.inecol.mx/index.php/azm/article/view/2449/2998 Derechos de autor 2022 ACTA ZOOLÓGICA MEXICANA (N.S.) http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | García-Rejón, Julián E. Tzuc-Dzul, Julio C. Cigarroa-Toledo, Nohemi Talavera-Aguilar, Lourdes G. Cetina-Trejo, Rosa C. Baak-Baak, Carlos M. Fecundity and morphological description of the eggs of Psorophora cyanescens (Coquillett, 1902) (Diptera: Culicidae) by scanning electron microscopy |
| title | Fecundity and morphological description of the eggs of Psorophora cyanescens (Coquillett, 1902) (Diptera: Culicidae) by scanning electron microscopy |
| title_full | Fecundity and morphological description of the eggs of Psorophora cyanescens (Coquillett, 1902) (Diptera: Culicidae) by scanning electron microscopy |
| title_fullStr | Fecundity and morphological description of the eggs of Psorophora cyanescens (Coquillett, 1902) (Diptera: Culicidae) by scanning electron microscopy |
| title_full_unstemmed | Fecundity and morphological description of the eggs of Psorophora cyanescens (Coquillett, 1902) (Diptera: Culicidae) by scanning electron microscopy |
| title_short | Fecundity and morphological description of the eggs of Psorophora cyanescens (Coquillett, 1902) (Diptera: Culicidae) by scanning electron microscopy |
| title_sort | fecundity and morphological description of the eggs of psorophora cyanescens (coquillett, 1902) (diptera: culicidae) by scanning electron microscopy |
| url | https://azm.ojs.inecol.mx/index.php/azm/article/view/2449 |
| work_keys_str_mv | AT garciarejonjuliane fecundityandmorphologicaldescriptionoftheeggsofpsorophoracyanescenscoquillett1902dipteraculicidaebyscanningelectronmicroscopy AT tzucdzuljulioc fecundityandmorphologicaldescriptionoftheeggsofpsorophoracyanescenscoquillett1902dipteraculicidaebyscanningelectronmicroscopy AT cigarroatoledonohemi fecundityandmorphologicaldescriptionoftheeggsofpsorophoracyanescenscoquillett1902dipteraculicidaebyscanningelectronmicroscopy AT talaveraaguilarlourdesg fecundityandmorphologicaldescriptionoftheeggsofpsorophoracyanescenscoquillett1902dipteraculicidaebyscanningelectronmicroscopy AT cetinatrejorosac fecundityandmorphologicaldescriptionoftheeggsofpsorophoracyanescenscoquillett1902dipteraculicidaebyscanningelectronmicroscopy AT baakbaakcarlosm fecundityandmorphologicaldescriptionoftheeggsofpsorophoracyanescenscoquillett1902dipteraculicidaebyscanningelectronmicroscopy |
