CICLO REPRODUCTOR DE UTA STEJNEGERI SCHMIDT 1921 (SAURIA: PHRYNOSOMATIDAE) EN DUNAS DEL BOLSÓN DE MAPIMÍ; DURANGO; MÉXICO
The reproductive cycle of the lizard Uta stejnegeri Schmidt 1921 (previously Uta stansburiana stejnegeri Schmidt 1921) was determined using data obtained from field caught individuals at the Biosphere Reserve of Mapimí, Durango, México. During 1990 monthly samples of this species were collected from...
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| Materiálatiipa: | Online |
| Giella: | spa |
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Instituto de Ecología, A.C.
2004
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| Liŋkkat: | https://azm.ojs.inecol.mx/index.php/azm/article/view/1586 |
| _version_ | 1799770223631400960 |
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| author | Gadsden, Héctor Méndez De La Cruz, Fausto R. Gil Martínez, Rosalina |
| author_facet | Gadsden, Héctor Méndez De La Cruz, Fausto R. Gil Martínez, Rosalina |
| author_sort | Gadsden, Héctor |
| collection | AZM |
| description | The reproductive cycle of the lizard Uta stejnegeri Schmidt 1921 (previously Uta stansburiana stejnegeri Schmidt 1921) was determined using data obtained from field caught individuals at the Biosphere Reserve of Mapimí, Durango, México. During 1990 monthly samples of this species were collected from sand dunes. Males reached sexual maturity at 45.0 mm snouth–vent length (SVL); females reached sexual maturity at 40.0 mm SVL. The reproductive cycles of both sexes were synchronous. Significant variation in testes mass was determinated by ANCOVA and males reached maximal testes mass between December-February; testes began to decrease in July, reaching minimum mass in September. The monthly percentage of non-vitellogenic follicles, vitellogenic follicles and oviductal eggs was recorded for females. Enlarged vitellogenic follicles first appeared during mid-January in females. These showed bimodal presence of eggs in oviducts between February and May and in July. Mean clutch size based on oviductal eggs counts was 2.8 ± 1.1. Clutch size was positively correlated with female body size. Most of the annual rainfall ocurrs during summer, and we suggest that offspring production is timed to the best season to promote juvenile growth and survivorship. We found similarities between this reproductive cycle and those previously reported for U. stansburiana from the United States. |
| format | Online |
| id | azm-article-1586 |
| institution | Acta Zoológica Mexicana |
| language | spa |
| publishDate | 2004 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | azm-article-15862022-11-14T23:53:38Z CICLO REPRODUCTOR DE UTA STEJNEGERI SCHMIDT 1921 (SAURIA: PHRYNOSOMATIDAE) EN DUNAS DEL BOLSÓN DE MAPIMÍ; DURANGO; MÉXICO CICLO REPRODUCTOR DE UTA STEJNEGERI SCHMIDT 1921 (SAURIA: PHRYNOSOMATIDAE) EN DUNAS DEL BOLSÓN DE MAPIMÍ; DURANGO; MÉXICO Gadsden, Héctor Méndez De La Cruz, Fausto R. Gil Martínez, Rosalina Chihuahuan Desert Biosphere Reserve of Mapimí reproduction Uta dunes Desierto Chihuahuense Reserva de Biosfera de Mapimí reproducción Uta dunas The reproductive cycle of the lizard Uta stejnegeri Schmidt 1921 (previously Uta stansburiana stejnegeri Schmidt 1921) was determined using data obtained from field caught individuals at the Biosphere Reserve of Mapimí, Durango, México. During 1990 monthly samples of this species were collected from sand dunes. Males reached sexual maturity at 45.0 mm snouth–vent length (SVL); females reached sexual maturity at 40.0 mm SVL. The reproductive cycles of both sexes were synchronous. Significant variation in testes mass was determinated by ANCOVA and males reached maximal testes mass between December-February; testes began to decrease in July, reaching minimum mass in September. The monthly percentage of non-vitellogenic follicles, vitellogenic follicles and oviductal eggs was recorded for females. Enlarged vitellogenic follicles first appeared during mid-January in females. These showed bimodal presence of eggs in oviducts between February and May and in July. Mean clutch size based on oviductal eggs counts was 2.8 ± 1.1. Clutch size was positively correlated with female body size. Most of the annual rainfall ocurrs during summer, and we suggest that offspring production is timed to the best season to promote juvenile growth and survivorship. We found similarities between this reproductive cycle and those previously reported for U. stansburiana from the United States. Se determinó el ciclo reproductor de Uta stejnegeri Schmidt 1921 (antes Uta stansburiana stejnegeri Schmidt 1921) utilizando datos obtenidos de individuos capturados en el campo en la Reserva de Biosfera de Mapimí, Durango, México. Durante 1990 se colectaron mensualmente muestras de esta especie en dunas de arena. Los machos alcanzaron la madurez sexual a los 45.0 mm de longitud hocico-cloaca (LHC), y las hembras alcanzaron la madurez sexual a los 40.0 mm LHC. El ciclo reproductor de ambos sexos fue sincrónico. La variación significativa en peso testicular fue determinada por ANCOVA y los machos alcanzaron su máximo peso testicular entre diciembre y febrero. Los testículos comenzaron a decrecer en julio, alcanzando su peso mínimo en septiembre. Para las hembras se registró el porcentaje mensual de folículos sin vitelo, folículos con vitelo, y de huevos en oviductos. Los primeros folículos agrandados y con vitelo se observaron a la mitad de enero en las hembras. Estas mostraron una presencia bimodal de huevos en oviductos entre febrero y mayo y en julio. La media del tamaño de puesta basada sobre el conteo de los huevos en los oviductos fue de 2.8 ± 1.1. El tamaño de puesta estuvo correlacionado positivamente con el tamaño del cuerpo de las hembras. La mayoría de la precipitación pluvial anual ocurre durante el verano, y se propone que la producción de crías está sincronizada con la mejor estación para promover el crecimiento y supervivencia de los jóvenes. Encontramos similitudes entre este ciclo reproductor y aquellos reportados previamente para U. stansburiana de los Estados Unidos. Instituto de Ecología, A.C. 2004-06-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Original articles Artículos originales application/pdf https://azm.ojs.inecol.mx/index.php/azm/article/view/1586 10.21829/azm.2004.2031586 ACTA ZOOLÓGICA MEXICANA (N.S.); Vol. 20 No. 3 (2004); 127-138 ACTA ZOOLÓGICA MEXICANA (N.S.); Vol. 20 Núm. 3 (2004); 127-138 2448-8445 0065-1737 spa https://azm.ojs.inecol.mx/index.php/azm/article/view/1586/2947 Derechos de autor 2018 Acta Zoológica Mexicana http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Gadsden, Héctor Méndez De La Cruz, Fausto R. Gil Martínez, Rosalina CICLO REPRODUCTOR DE UTA STEJNEGERI SCHMIDT 1921 (SAURIA: PHRYNOSOMATIDAE) EN DUNAS DEL BOLSÓN DE MAPIMÍ; DURANGO; MÉXICO |
| title | CICLO REPRODUCTOR DE UTA STEJNEGERI SCHMIDT 1921 (SAURIA: PHRYNOSOMATIDAE) EN DUNAS DEL BOLSÓN DE MAPIMÍ; DURANGO; MÉXICO |
| title_full | CICLO REPRODUCTOR DE UTA STEJNEGERI SCHMIDT 1921 (SAURIA: PHRYNOSOMATIDAE) EN DUNAS DEL BOLSÓN DE MAPIMÍ; DURANGO; MÉXICO |
| title_fullStr | CICLO REPRODUCTOR DE UTA STEJNEGERI SCHMIDT 1921 (SAURIA: PHRYNOSOMATIDAE) EN DUNAS DEL BOLSÓN DE MAPIMÍ; DURANGO; MÉXICO |
| title_full_unstemmed | CICLO REPRODUCTOR DE UTA STEJNEGERI SCHMIDT 1921 (SAURIA: PHRYNOSOMATIDAE) EN DUNAS DEL BOLSÓN DE MAPIMÍ; DURANGO; MÉXICO |
| title_short | CICLO REPRODUCTOR DE UTA STEJNEGERI SCHMIDT 1921 (SAURIA: PHRYNOSOMATIDAE) EN DUNAS DEL BOLSÓN DE MAPIMÍ; DURANGO; MÉXICO |
| title_sort | ciclo reproductor de uta stejnegeri schmidt 1921 (sauria: phrynosomatidae) en dunas del bolsón de mapimí; durango; méxico |
| url | https://azm.ojs.inecol.mx/index.php/azm/article/view/1586 |
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