| Autor: |
Michael Mahony, Harry B. Hines, David A. Newell, Michael J. Cunningham, Ross Knowles, Karen Thumm |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Australian Zoologist. 37:381-402 |
| ISSN: |
0067-2238 |
| Popis: |
Several species of the Australo-Papuan genus Mixophyes (barred frogs) have declined markedly and are now considered threatened. During field investigations into the possible causes of declines, we observed oviposition and numerous egg masses (700+) of the four species from southeast Australia. From these and published observations there are two markedly different ovipositional processes within Mixophyes. In M. coggeri, M. fasciolatus and M. iteratus eggs are laid in water then deposited terrestrially, propelled from the foot of the floating female onto a near-vertical or overhanging stream bank (Ovipositional Process 1). In M. balbus and M. fleayi eggs are deposited aquatically in the shallow riffle zones of small streams, either into a rounded nest depression in the substrate (Ovipositional Process 2A), or occasionally directly onto bedrock (Ovipositional Process 2B). These observations of ovipositing and egg masses show that there are three reproductive modes in the genus: mode 2 - eggs and exotrophic t... |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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