Effect of climatic variables on seasonal morphological changes in the testis and epididymis in the wild rodent Microcavia australis from the andes mountains, Argentina
It has been shown that seasonal changes, especially in arid areas have a large influence on gonadal changes of the species that inhabit these areas. We studied a wild hystricomorph Microcavia australis in its natural habitat in the arid Andes Mountains. Sampling of adult males was carried out every...
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2010
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| LEADER | 14979caa a22013337a 4500 | ||
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| 001 | PAPER-7613 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518203722.0 | ||
| 008 | 190411s2010 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-79952114984 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Velez, S. | |
| 245 | 1 | 0 | |a Effect of climatic variables on seasonal morphological changes in the testis and epididymis in the wild rodent Microcavia australis from the andes mountains, Argentina |
| 260 | |c 2010 | ||
| 270 | 1 | 0 | |m Fornés, M.W.; Laboratory of Andrology Research at Mendoza (LIAM), Instituto de Histología y Embriología de Mendoza (IHEM), Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Casilla de correo 56, CP 5500 Mendoza, Argentina; email: mfornes@fcm.uncu.edu.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a It has been shown that seasonal changes, especially in arid areas have a large influence on gonadal changes of the species that inhabit these areas. We studied a wild hystricomorph Microcavia australis in its natural habitat in the arid Andes Mountains. Sampling of adult males was carried out every 2 months. After autopsy, testes and epididymides were weighed and processed to obtain histological samples. Testes were analyzed with a microscope to measure seminiferous tubule area and diameter for each sampled month. Epididymides were used to determine spermatozoon storage in the cauda region. Results illustrate morphological changes in the testis and epididymis along the year. A high output of sperm cells was detected from middle winter to middle summer and a complete shutdown of spermatogenesis at the end of summer. The initiation of testicular activity coincided with month with the shortest day length, in dry season and very low temperature. On the other hand, gonadal regression started in the middle of summer with long day length, in the wet season, and high temperatures. Rainfall, temperature, and day length seem to be important for the testis cycle. We suggest that photoperiod could be a good predictor for an oncoming period suitable for breeding, and males may probably use it as a signal to regulate gonadal activity. © 2010 Wiley-Liss, Inc. |l eng | |
| 593 | |a Grupo de Investigaciones de la Biodiversidad, Instituto Argentino de Investigaciones de las Zonas Áridas, Centro de Investigaciones en Ciencia y Técnica de Mendoza, CONICET, Mendoza, Argentina | ||
| 593 | |a Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina | ||
| 593 | |a Instituto y Museo de Ciencias Naturales y Departamento de Biología, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de San Juan, CONICET, San Juan, Argentina | ||
| 593 | |a Laboratorio de Investigaciones Andrológicas de Mendoza, Instituto de Histología y Embriología de Mendoza, Facultad de Ciencias Medicas, Universidad Nacional de Cuyo, Centro de Investigaciones en Ciencia y Tecnica de Mendoza, CONICET, Mendoza, Argentina | ||
| 593 | |a Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina | ||
| 690 | 1 | 0 | |a HYSTRICOGNATHI |
| 690 | 1 | 0 | |a MICROCAVIA AUSTRALIS |
| 690 | 1 | 0 | |a RODENTIA |
| 690 | 1 | 0 | |a ANIMAL |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a CYTOCHEMISTRY |
| 690 | 1 | 0 | |a DESERT CLIMATE |
| 690 | 1 | 0 | |a EPIDIDYMIS |
| 690 | 1 | 0 | |a HISTOLOGY |
| 690 | 1 | 0 | |a MALE |
| 690 | 1 | 0 | |a NONPARAMETRIC TEST |
| 690 | 1 | 0 | |a ORGAN SIZE |
| 690 | 1 | 0 | |a PHYSIOLOGY |
| 690 | 1 | 0 | |a RODENT |
| 690 | 1 | 0 | |a SEASON |
| 690 | 1 | 0 | |a SPERMATOGENESIS |
| 690 | 1 | 0 | |a TESTIS |
| 690 | 1 | 0 | |a ANIMALS |
| 690 | 1 | 0 | |a DESERT CLIMATE |
| 690 | 1 | 0 | |a EPIDIDYMIS |
| 690 | 1 | 0 | |a HISTOCYTOCHEMISTRY |
| 690 | 1 | 0 | |a MALE |
| 690 | 1 | 0 | |a ORGAN SIZE |
| 690 | 1 | 0 | |a RODENTIA |
| 690 | 1 | 0 | |a SEASONS |
| 690 | 1 | 0 | |a SPERMATOGENESIS |
| 690 | 1 | 0 | |a STATISTICS, NONPARAMETRIC |
| 690 | 1 | 0 | |a TESTIS |
| 651 | 4 | |a ARGENTINA | |
| 651 | 4 | |a ARGENTINA | |
| 700 | 1 | |a Sassi, P.L. | |
| 700 | 1 | |a Borghi, C.E. | |
| 700 | 1 | |a Monclus, M.A. | |
| 700 | 1 | |a Fornés, M.W. | |
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