Reproductive biology of Odontophrynus americanus females (Duméril & Bribon, 1841) (Anura, Cycloramphidae) from Uruguay
This paper describes the female reproductive pattern in a population of the frog Odontophrynus americanus from Uruguay. It is a species with explosive reproductive dynamics; such strategy has been little studied in temperate environments. Seventyfive adult females collected for one year were used, b...
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| Format: | article |
| Language: | English |
| Published: |
2016
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| Online Access: | https://hdl.handle.net/20.500.12008/25001 |
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| Summary: | This paper describes the female reproductive pattern in a population of the frog Odontophrynus americanus from Uruguay. It is a species with explosive reproductive dynamics; such strategy has been little studied in temperate environments. Seventyfive adult females collected for one year were used, belonging to the Scientific Collection of the Facultad de Ciencias (Montevideo, Uruguay). We analyzed ovary mass, fecundity, reproductive investment, oocytes size and fat bodies. Also we studied the association between reproductive activity and abiotic variables. Larger size females have greater potential reproductive, and also invest in both the number and the size of oocytes proportionally. Reproductive investment did not show a clear pattern of temporal variation, and relative abundance of fat bodies remains unchanged over year. Reproductive activity of females of O. americanus is not found associated photoperiod and neither with temperature, but if with rainfall. These results are congruent with an explosive-type reproductive dynamic. |
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