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Influence of advertisement calls on reproductive success in the male midwife toad Alytes obstetricans
in BehaviourSearch for other papers by Thierry Lodé in
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Google Scholar
Search for other papers by Dominique Le Jacques in
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Abstract
Considering the advertisement call in anuran as a sexually selected trait, we investigated the effects of male call parameters on reproductive success in midwife toad Alytes obstetricans. The pattern of advertisement call was studied in 81 males. The mean fundamental frequency varied among males. Fundamental frequency, call duration and male size correlated with the male mating success. From the stepwise regression analysis, the low call frequency was found to influence significantly the number of carried eggs and the hatching success. The fact that a single male may fertilise the eggs of several females and a single female may mate with several males constitutes an original sexual system. Large males obtained more matings and showed a higher hatching success. Female choice for dominant frequency may be regarded as a related-fitness trait being correlated with male size. Anyway, the male size and the female choice for low calls result in a same evolutionary trend favouring a best fitness.
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| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 452 | 59 | 7 |
| Gesamttextansichten | 75 | 1 | 0 |
| PDF-Downloads | 30 | 2 | 0 |
Influence of advertisement calls on reproductive success in the male midwife toad Alytes obstetricans
in BehaviourSearch for other papers by Thierry Lodé in
Current site
Google Scholar
PubMed
Search for other papers by Dominique Le Jacques in
Current site
Google Scholar
PubMed
Abstract
Considering the advertisement call in anuran as a sexually selected trait, we investigated the effects of male call parameters on reproductive success in midwife toad Alytes obstetricans. The pattern of advertisement call was studied in 81 males. The mean fundamental frequency varied among males. Fundamental frequency, call duration and male size correlated with the male mating success. From the stepwise regression analysis, the low call frequency was found to influence significantly the number of carried eggs and the hatching success. The fact that a single male may fertilise the eggs of several females and a single female may mate with several males constitutes an original sexual system. Large males obtained more matings and showed a higher hatching success. Female choice for dominant frequency may be regarded as a related-fitness trait being correlated with male size. Anyway, the male size and the female choice for low calls result in a same evolutionary trend favouring a best fitness.
| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 452 | 59 | 7 |
| Gesamttextansichten | 75 | 1 | 0 |
| PDF-Downloads | 30 | 2 | 0 |
