Diet and Reproductive Biology of the Viviparous Lizard Sceloporus torquatus torquatus (Squamata: Phrynosomatidae)
| Autor: | Manuel Feria Ortiz, Adrián Nieto-Montes de Oca, Isaías H. Salgado Ugarte, Adrian Nieto-Montes de Oca, Isaias H. Salgado Ugarte |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Litter (animal)
education.field_of_study Squamata biology Ecology Lizard media_common.quotation_subject Population Ovary (botany) Zoology biology.organism_classification biology.animal Reproductive biology Dry season Animal Science and Zoology education Ovulation Ecology Evolution Behavior and Systematics media_common |
| Zdroj: | Journal of Herpetology. 35:104 |
| ISSN: | 0022-1511 |
| DOI: | 10.2307/1566029 |
| Popis: | The reproductive cycle and diet of a population of the viviparous lizard Sceloporus torquatus torquatus from the Pedregal de San Angel, Distrito Federal, Mexico, were studied. Ovarian activity began in June, and by October, one to five preovulatory follicles per ovary were present Ovulation took place in November and December, and parturition occurred in late April or early May. Relative litter and egg masses were higher at the end of development than at the beginning. Testes increased in size from June through September, when they reached their maximum volume and weight Testicular regression began at this point and was particularly accentuated in October and November. The diet of both sexes was composed primarily of insects; however, plant material (small flowers and fruits), spiders, isopods, and occasionally earthworms were also consumed. Both sexes consumed plant material throughout the year. In the dry season, males ingested twice as much food as females. |
| Databáze: | OpenAIRE |
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