Yawning and penile erection frequencies are resilient to maternal care manipulation in the high-yawning subline of sprague–dawley rats

"Yawning is a stereotyped behavioral pattern characterized by wide opening of the mouth associated with deep inspiration followed by short expiration. All vertebrate species yawn, but with low frequencies. We obtained two sublines of Sprague–Dawley (SD) rats by a strict inbreeding process: one...

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Detalles Bibliográficos
Autores: Cortes Sánchez, Ma. del Carmen; 0000-0002-9163-2665, Ugarte, Araceli; 0000-0001-6020-3780, Trujillo Hernández, Angélica; 0000-0002-9931-9294, Cortes Sánchez, Ma. del Carmen, Ugarte, Araceli, Trujillo Hernández, Angélica, Eguibar Cuenca, José Ramón, Carrasco, Ángeles, Cepeda Freyre, Héctor Alejandro, Dorantes Nieto, María de los Ángeles
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:México
Institución:Benemérita Universidad Autónoma de Puebla
Repositorio:Repositorio Institucional de Acceso Abierto RIAA-BUAP
Idioma:inglés
OAI Identifier:oai:repositorioinstitucional.buap.mx:20.500.12371/17864
Acceso en línea:https://doi.org/10.3389/fnbeh.2020.00020
https://hdl.handle.net/20.500.12371/17864
Access Level:acceso abierto
Palabra clave:Anxiety
Sexual behavior
Maternal care
Grooming
Epigenetic
Cross-fostering
Depression
Scratching
Descripción
Sumario:"Yawning is a stereotyped behavioral pattern characterized by wide opening of the mouth associated with deep inspiration followed by short expiration. All vertebrate species yawn, but with low frequencies. We obtained two sublines of Sprague–Dawley (SD) rats by a strict inbreeding process: one with a high-yawning frequency (HY) of 20 yawns/h, which is one order of magnitude higher with respect to the low-yawning frequency (LY) subline, with 2 yawns/h. Outbred SD rats had a yawning frequency of 1 yawn/h. HY dams had a different organization of maternal care with respect to that displayed by LY and SD dams because HY dams constructed lower quality nests and had more re-retrieving and atypical retrieving. The aim of this study was to analyze the changes in maternal care using in- and cross-fostering between the sublines and SD dams and to measure spontaneous and dopaminergic-induced yawning, penile erections, grooming and scratching bouts. Maternal care did not differ between sublines and SD dams independent of the litter they reared. However, LY rats reared by HY dams showed a significant increase in the number of spontaneous penile erections".

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