DOPA decarboxylase is essential for cuticle tanning in Rhodnius prolixus (Hemiptera: Reduviidae), affecting ecdysis, survival and reproduction

Cuticle tanning occurs in insects immediately after hatching or molting. During this process, the cuticle becomes dark and rigid due to melanin deposition and protein crosslinking. In insects, different from mammals, melanin is synthesized mainly from dopamine, which is produced from DOPA by the enzyme DOPA decarboxylase. In this work, we report that the silencing of the RpAadc-2 gene, which encodes the putative Rhodnius prolixus DOPA decarboxylase enzyme, resulted in a reduction in nymph survival, with a high percentage of treated insects dying during the ecdysis process or in the expected ecdysis period. Those treated insects that could complete ecdysis presented a decrease in cuticle pigmentation and hardness after molting. In adult females, the knockdown of AADC-2 resulted in a reduction in the hatching of eggs; the nymphs that managed to hatch failed to tan the cuticle and were unable to feed. Despite the failure in cuticle tanning, knockdown of the AADC-2 did not increase the susceptibility to topically applied deltamethrin, a pyrethroid insecticide. Additionally, our results showed that the melanin synthesis pathway did not play a major role in the detoxification of the excess (potentially toxic) tyrosine from the diet, an essential trait for hematophagous arthropod survival after a blood meal.Fil: Sterkel, Marcos. Universidad Nacional de La Plata. Centro Regional de Estudios Genómicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Ons, Sheila. Universidad Nacional de La Plata. Centro Regional de Estudios Genómicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Oliveira, Pedro L.. Universidade Federal do Rio de Janeiro; Brasi

Prospectus, October 8, 1980

PRESIDENT CARTER: THE SONG REMAINS THE SAME; Letters to the editor: Black student questions fairness, Why not Ronald Reagan; International Students Day -- Oct. 22; Transfer day set for Oct. 15; Attention: Deadline past for student insurance; Record number register at Parkland; Horse Farming -- from days gone by; Chins Up! Only 1,752 hours \u27til Christmas break; Election \u2780: The Song Will Remain the Same; A look at O.R.G.I.I.; Celebration planned for PC Women\u27s Week; Stroke Club to hold meeting; Classifieds; Spikers hit low point ; Fast Freddy Contest; Fast Freddy getting the hang of ithttps://spark.parkland.edu/prospectus_1980/1018/thumbnail.jp

Prospectus, August 25, 1980

FALL IN ; Senate to hold elections; Ready or not…; President Staerkel welcomes students; U of I ROTC courses available to Parkland College students; Mexico -- A Land of Contrast; Dates to Live By; Parkland choral music has new conductor, big plans; Classes offered at Monticello, Lincoln schools; Courses offered to music lovers; Outlook optimistic for baseball; Women\u27s fast pitch softball meeting to be held Thursday; Fall tryouts for baseball; Fall Sports Schedules; Summer sports in review...; V-ballers face tough schedule, meeting and tryouts Tuesdayhttps://spark.parkland.edu/prospectus_1980/1024/thumbnail.jp

Estar afuera, estar adentro, salir de a poco: reconfiguración de las prácticas de rap en pandemia y pos pandemia

En la última década el rap en Argentina vivió un crecimiento vertiginoso, a través de competencias de freestyle (estilo libre o improvisado), realizadas principalmente en espacios públicos abiertos. La pandemia de la Covid 19 y las consecuentes políticas de aislamiento y distanciamiento (ASPO y DISPO) conllevaron a la suspensión de dichos eventos, debido a la imposibilidad de reunirse presencialmente. Partiendo de esta situación, esta ponencia tiene como objeto dar cuenta de transformaciones en la práctica artística rapera en situación de aislamiento en el hogar, a través del análisis de las estrategias y actividades propuestas por productoras de eventos de rap en redes sociales y su interacción con los usuarios. A través de un seguimiento a lo largo del 2020 de las publicaciones y actividades de dos productoras (Sucre y La Nueva Era) se observaron las diferencias y transformaciones espacio temporales entre las prácticas presenciales pre pandémicas y las actividades hechas por streaming , las limitaciones y posibilidades presentes a partir de la mediación tecnológica, los sentidos y apreciaciones sobre estos cambios presentes en los comentarios de los usuarios y en entrevistas realizadas con miembros de las productoras. Sobre este panorama se abren los siguientes interrogantes a los cuales invita a reflexionar esta ponencia: ¿Qué lugar ocupa el cuerpo en el ámbito público y en el doméstico en la performance rapera? ¿Cuánto influye el entorno y qué importancia tiene en la práctica? ¿Hasta dónde una competencia virtual permite recrear la presencialidad? ¿Qué “se perdió” y qué “se ganó”, según los participantes, con las distintas iniciativas virtuales llevadas a cabo por las productoras? ¿Qué de la experiencia generada durante el ASPO ha perdurado a pesar de la flexibilización de las restricciones y la vuelta a la presencialidad?GT64: Antropología de las prácticas artísticas.Universidad Nacional de La Plat

Prospectus, September 5, 1979

ACTIVITIES DAY -- A PICTURESQUE SCENE; C-U Cablevision arrives; Common names red-tape; Neal gives advice to new internationals; Latest minority receives attention; \u27Forum\u27 to hold first meeting; One-man exhibit; Chaotic Climax to \u27Fall Chaos\u27; Classified Advertising; Top 10 List from WPCD Radio; Family Services meets weekly -- Sept. 19; Single Parent Shop; Mathphobia; Notice: Application dates for future U. of I. D. V. M.\u27s; Latest registration total; Painting Presented; Prairie Fall Century set; Pragler named coach; Sports meetings upcoming; Freddy fumbles opener, hopes for bright results; Fast Freddy Contesthttps://spark.parkland.edu/prospectus_1979/1014/thumbnail.jp

Prospectus, October 22, 1980

INTERNATIONAL STUDENTS CELEBRATE TODAY; Letters to the Editors: Student has questions for Schumacher, Co-editor apologizes to runners, Student supports Schumacher\u27s view; PACT discusses day care; Food, beer, fun planned for Oktoberfest; Seniors to tour Parkland next week; Stories of America will be presented October 29-Nov 1; Two-hundred help celebrate: Parkland students celebrate International Students Day today; State rep. candidates express their views; PC drama department presents its fall production; PC offers Pharmacy Technician program; Fall means football... and football means Homecoming; Handle your $$ properly; Learn to take care of you car: enroll in PC\u27s car care course; Leardship is not shout, flout, and clout; Compunds from marine animals could cure cancer; U of I\u27s John Dickel will talk; Reaching Out ; Jeff Beck gives a hot, jazzy show; Marcel Marceau: the Master isn\u27t up to par; IM football winds down: teams available for volleyball, b-ball; Career center needs guides; X-country third in invitational; PC to offer EMT refresher; Arts showcase scheduled for next week; PC Datebook; Cobras can tie for championship; Freddy\u27s record looking better; Bench Warmer: Women\u27s b-ball team looking for balance; Fast Freddy Contesthttps://spark.parkland.edu/prospectus_1980/1016/thumbnail.jp