Eggs survive through avian guts—A possible mechanism for transoceanic dispersal of flightless weevils
| Autor: | Tsui Wen Li, Analyn Anzano Cabras, Si Min Lin, Chia Hsin Liou, Hui Yun Tseng, Ace Kevin S. Amarga |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Hypsipetes avian‐mediated dispersal Biogeography Zoology migration Pachyrhynchus 010603 evolutionary biology 01 natural sciences Nature Notes 03 medical and health sciences Frugivore Turdus chrysolaus QH540-549.5 Ecology Evolution Behavior and Systematics 030304 developmental biology Nature and Landscape Conservation 0303 health sciences Ecology biology Hatching colonization Bulbul biology.organism_classification endozoochory Treron sieboldii frugivorous birds Biological dispersal |
| Zdroj: | Ecology and Evolution Ecology and Evolution, Vol 11, Iss 12, Pp 7132-7137 (2021) |
| ISSN: | 2045-7758 |
| Popis: | How flightless animals disperse to remote oceanic islands is a key unresolved question in biogeography. The flightless Pachyrhynchus weevils represent repetitive colonization history in West Pacific islands, which attracted our interests about how some weevils have successfully dispersed in the reverse direction against the sea current. Here, we propose endozoochory as a possible mechanism that the eggs of the weevils might be carried by embedded in the fruits as the food of frugivorous birds. In this study, Pachyrhynchus eggs were embedded in small pieces of persimmon fruits (Diospyros kaki) and fed to captive frugivorous birds. After digestion, 83%–100% eggs were retrieved from the feces of a bulbul (Hypsipetes leucocephalus) and two thrushes (Turdus chrysolaus). The retrieved eggs had hatching rates higher than 84%, which were not different from the control. In contrast, no egg was retrieved from the feces of the frugivorous pigeon (Treron sieboldii), which took a longer retention time in the guts. Our study identified that the eggs of Pachyrhynchus weevils are possible to be transported by internal digesting in some bird species. How flightless weevils disperse to remote oceanic islands is a fantastic issue in biogeography. Our study identified that the eggs of the weevils are possible to be transported by internal digesting in some frugivorous birds. |
| Databáze: | OpenAIRE |
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