Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera

Autores
Busso, Juan Manuel; Ponzio, Marina Flavia; Fiol, Marta Haydee; Ruiz, Ruben Daniel
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In mammals, reproductive performance is usually associated with seasons. Chinchilla lanigera, an endemic South American rodent, reproduces throughout the year in captivity but its seasonal breeding pattern is not fully understood. The present study was designed to evaluate (bi-weekly) over 1 year: (1) testicular volume variations and (2) seminal volume, sperm concentration and functional activity changes. Five animals were studied; they were individually housed indoors (22.2 ± 1.0°C) under natural photoperiod in Argentina (Córdoba, 31°S-64°W). Semen was obtained by electroejaculation; a total of 116 ejaculates was evaluated. Monthly values for paired testicular volume were less in the middle of the summer than in other seasons (p < 0.006), while those for seminal volume and total spermatozoa/ejaculate were not significantly different; these variables ranged between 7.2-30.9 cm 3, 10-130 μL and 0.9-432.6 × 10 6, respectively. Spermatozoa concentration was (×10 6/mL) 2145.9 ± 365.3 and the pH of semen was 7.3 ± 0.0. Spermatozoa functional activity showed no significant differences between monthly evaluations; confidence intervals were calculated for the means of: motility, 92.2-95.8%; viability, 92.2-96.1%; swollen cells (hypo-osmotic swelling test), 81.2-87.7% and viable intact acrosome, 83.5-89.0%. The present study represents the first longitudinal reproductive assessment in the chinchilla male. In conclusion, males produce spermatozoa continuously that exhibit high quality functional activity.
Fil: Busso, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina
Fil: Ponzio, Marina Flavia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina
Fil: Fiol, Marta Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina
Fil: Ruiz, Ruben Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina
Materia
CHINCHILLA
ELECTROEJACULATION
NEOTROPICAL RODENTS
PHOTOPERIOD
SPERM FUNCTIONAL ACTIVITY
TESTICULAR VOLUME
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/115734
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/115734
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigeraBusso, Juan ManuelPonzio, Marina FlaviaFiol, Marta HaydeeRuiz, Ruben DanielCHINCHILLAELECTROEJACULATIONNEOTROPICAL RODENTSPHOTOPERIODSPERM FUNCTIONAL ACTIVITYTESTICULAR VOLUMEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1In mammals, reproductive performance is usually associated with seasons. Chinchilla lanigera, an endemic South American rodent, reproduces throughout the year in captivity but its seasonal breeding pattern is not fully understood. The present study was designed to evaluate (bi-weekly) over 1 year: (1) testicular volume variations and (2) seminal volume, sperm concentration and functional activity changes. Five animals were studied; they were individually housed indoors (22.2 ± 1.0°C) under natural photoperiod in Argentina (Córdoba, 31°S-64°W). Semen was obtained by electroejaculation; a total of 116 ejaculates was evaluated. Monthly values for paired testicular volume were less in the middle of the summer than in other seasons (p < 0.006), while those for seminal volume and total spermatozoa/ejaculate were not significantly different; these variables ranged between 7.2-30.9 cm 3, 10-130 μL and 0.9-432.6 × 10 6, respectively. Spermatozoa concentration was (×10 6/mL) 2145.9 ± 365.3 and the pH of semen was 7.3 ± 0.0. Spermatozoa functional activity showed no significant differences between monthly evaluations; confidence intervals were calculated for the means of: motility, 92.2-95.8%; viability, 92.2-96.1%; swollen cells (hypo-osmotic swelling test), 81.2-87.7% and viable intact acrosome, 83.5-89.0%. The present study represents the first longitudinal reproductive assessment in the chinchilla male. In conclusion, males produce spermatozoa continuously that exhibit high quality functional activity.Fil: Busso, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; ArgentinaFil: Ponzio, Marina Flavia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; ArgentinaFil: Fiol, Marta Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; ArgentinaFil: Ruiz, Ruben Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; ArgentinaElsevier Science2005-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/115734Busso, Juan Manuel; Ponzio, Marina Flavia; Fiol, Marta Haydee; Ruiz, Ruben Daniel; Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera; Elsevier Science; Animal Reproduction Science; 90; 1-2; 11-2005; 127-1340378-4320CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S037843200500028Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.anireprosci.2005.02.001info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:52:29Zoai:ri.conicet.gov.ar:11336/115734instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:52:29.93CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera
title Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera
spellingShingle Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera
Busso, Juan Manuel
CHINCHILLA
ELECTROEJACULATION
NEOTROPICAL RODENTS
PHOTOPERIOD
SPERM FUNCTIONAL ACTIVITY
TESTICULAR VOLUME
title_short Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera
title_full Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera
title_fullStr Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera
title_full_unstemmed Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera
title_sort Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera
dc.creator.none.fl_str_mv Busso, Juan Manuel
Ponzio, Marina Flavia
Fiol, Marta Haydee
Ruiz, Ruben Daniel
author Busso, Juan Manuel
author_facet Busso, Juan Manuel
Ponzio, Marina Flavia
Fiol, Marta Haydee
Ruiz, Ruben Daniel
author_role author
author2 Ponzio, Marina Flavia
Fiol, Marta Haydee
Ruiz, Ruben Daniel
author2_role author
author
author
dc.subject.none.fl_str_mv CHINCHILLA
ELECTROEJACULATION
NEOTROPICAL RODENTS
PHOTOPERIOD
SPERM FUNCTIONAL ACTIVITY
TESTICULAR VOLUME
topic CHINCHILLA
ELECTROEJACULATION
NEOTROPICAL RODENTS
PHOTOPERIOD
SPERM FUNCTIONAL ACTIVITY
TESTICULAR VOLUME
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In mammals, reproductive performance is usually associated with seasons. Chinchilla lanigera, an endemic South American rodent, reproduces throughout the year in captivity but its seasonal breeding pattern is not fully understood. The present study was designed to evaluate (bi-weekly) over 1 year: (1) testicular volume variations and (2) seminal volume, sperm concentration and functional activity changes. Five animals were studied; they were individually housed indoors (22.2 ± 1.0°C) under natural photoperiod in Argentina (Córdoba, 31°S-64°W). Semen was obtained by electroejaculation; a total of 116 ejaculates was evaluated. Monthly values for paired testicular volume were less in the middle of the summer than in other seasons (p < 0.006), while those for seminal volume and total spermatozoa/ejaculate were not significantly different; these variables ranged between 7.2-30.9 cm 3, 10-130 μL and 0.9-432.6 × 10 6, respectively. Spermatozoa concentration was (×10 6/mL) 2145.9 ± 365.3 and the pH of semen was 7.3 ± 0.0. Spermatozoa functional activity showed no significant differences between monthly evaluations; confidence intervals were calculated for the means of: motility, 92.2-95.8%; viability, 92.2-96.1%; swollen cells (hypo-osmotic swelling test), 81.2-87.7% and viable intact acrosome, 83.5-89.0%. The present study represents the first longitudinal reproductive assessment in the chinchilla male. In conclusion, males produce spermatozoa continuously that exhibit high quality functional activity.
Fil: Busso, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina
Fil: Ponzio, Marina Flavia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina
Fil: Fiol, Marta Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina
Fil: Ruiz, Ruben Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina
description In mammals, reproductive performance is usually associated with seasons. Chinchilla lanigera, an endemic South American rodent, reproduces throughout the year in captivity but its seasonal breeding pattern is not fully understood. The present study was designed to evaluate (bi-weekly) over 1 year: (1) testicular volume variations and (2) seminal volume, sperm concentration and functional activity changes. Five animals were studied; they were individually housed indoors (22.2 ± 1.0°C) under natural photoperiod in Argentina (Córdoba, 31°S-64°W). Semen was obtained by electroejaculation; a total of 116 ejaculates was evaluated. Monthly values for paired testicular volume were less in the middle of the summer than in other seasons (p < 0.006), while those for seminal volume and total spermatozoa/ejaculate were not significantly different; these variables ranged between 7.2-30.9 cm 3, 10-130 μL and 0.9-432.6 × 10 6, respectively. Spermatozoa concentration was (×10 6/mL) 2145.9 ± 365.3 and the pH of semen was 7.3 ± 0.0. Spermatozoa functional activity showed no significant differences between monthly evaluations; confidence intervals were calculated for the means of: motility, 92.2-95.8%; viability, 92.2-96.1%; swollen cells (hypo-osmotic swelling test), 81.2-87.7% and viable intact acrosome, 83.5-89.0%. The present study represents the first longitudinal reproductive assessment in the chinchilla male. In conclusion, males produce spermatozoa continuously that exhibit high quality functional activity.
publishDate 2005
dc.date.none.fl_str_mv 2005-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/115734
Busso, Juan Manuel; Ponzio, Marina Flavia; Fiol, Marta Haydee; Ruiz, Ruben Daniel; Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera; Elsevier Science; Animal Reproduction Science; 90; 1-2; 11-2005; 127-134
0378-4320
CONICET Digital
CONICET
url http://hdl.handle.net/11336/115734
identifier_str_mv Busso, Juan Manuel; Ponzio, Marina Flavia; Fiol, Marta Haydee; Ruiz, Ruben Daniel; Year-round testicular volume and semen quality evaluations in captive Chinchilla lanigera; Elsevier Science; Animal Reproduction Science; 90; 1-2; 11-2005; 127-134
0378-4320
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S037843200500028X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.anireprosci.2005.02.001
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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