Reproductive cycle of the squirrel Sciurus variegatoides (Rodentia: Sciuridae) in Costa Rica
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| 作者: | |
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| 格式: | artículo original |
| 狀態: | Versión publicada |
| Fecha de Publicación: | 2019 |
| 實物特徵: | Introduction: the squirrel Sciurus variegatoides is one of the most abundant species of squirrels in Central America, yet little is known about its reproduction. Objective: to determine the reproductive cycle of S. variegatoides in an agricultural area of Costa Rica. Methods: monthly (Dec. 1986 to Jan. 1988), I collected 10 animals at Hacienda Curú, Paquera, Costa Rica. I used scrotum presence, testicle size and length of the uterine horns to assess maturity. The reproductive cycle was based on pregnancy, lactation, courtship, nest construction, and proportion of subadults. Results: I collected a total 135 squirrels; sex ratio was 1,7 males per female; and 22% were subadults, both for males and females. I captured the pregnant females from December to June and represented 42% of the adult females. February and April were marked by courtship and an increase in the construction of nests. I collected lactating females from June to September, when I captured more subadults. Conclusion: There was no evidence of reproductive activity in October and November. |
| País: | Portal de Revistas UNED |
| 機構: | Universidad Estatal a Distancia |
| Repositorio: | Portal de Revistas UNED |
| 語言: | Español |
| OAI Identifier: | oai:revistas.investiga.uned.ac.cr:article/2260 |
| 在線閱讀: | https://revistas.uned.ac.cr/index.php/cuadernos/article/view/2260 |
| Palabra clave: | squirrels reproduction population structure Sciurus variegatoides Costa Rica. ardillas reproducción estructura poblacional |