Teleogryllus oceanicus
| Teleogryllus oceanicus | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Orthoptera |
| Suborder: | Ensifera |
| Superfamily: | Grylloidea |
| Family: | Gryllidae |
| Subfamily: | Gryllinae |
| Genus: | Teleogryllus |
| Species: | T. oceanicus |
| Binomial name | |
| Teleogryllus oceanicus (Le Guillou, 1841) | |
| Synonyms | |
|
Achaeta oceanica | |
Teleogryllus oceanicus, commonly known as the Australian, Pacific or oceanic field cricket, is a cricket found across Oceania and in coastal Australia from Carnarvon in Western Australia and Rockhampton in north-east Queensland.[1] It may also be referred to as the black field cricket, a common name it shares with Teleogryllus commodus.
It was previously believed that T. oceanicus was introduced to Hawaii in 1877,[2] but recent evidence comparing microsatellites across T. oceanicus populations in Australia, Oceania and Hawaii have suggested that it arrived 1500 years ago with Polynesian settlers.[3]
T. oceanicus on the island of Kauai are predated on by Ormia ochracea, a parasitic fly endemic to North America that homes in on male T. oceanicus song frequencies preferred by female T. oceanicus.[4] In response to this parasitism, a mutation called 'flatwing' that makes males obligately mute by reducing the file and scraper apparatus required for producing sound has spread in the Kauai male population;[5] in under 20 generations, 'flatwing' was reported in over 90% of the males on Kauai.[6] The males have also adapted their behaviour, exploiting males that can still make sound to attract mates for themselves.[7] Additionally, research has shown that non-flatwing males are more immunocompromised than flatwing males when reared in a silent environment;[8] this may suggest that the silent environment resulting from the rapid spread of flatwing may influence future population genetics.
References
- ↑ Otte, D. & Alexander, R.D. 1983. The Australian Crickets (Orthoptera: Gryllidae). Academy of Natural Sciences of Philadelphia, Philadelphia, PA
- ↑ Kevan, D.K.M. (1990). "Introduced grasshoppers and crickets in Micronesia". Bol. San. Veg. 20: 105–123.
- ↑ Tinghitella, R.M., Zuk, M., Beveridge, M., and L.W. Simmons. 2011. Island hopping introduces Polynesian field crickets to novel environments, genetic bottlenecks and rapid evolution. Journal of Evolutionary Biology 24: 1199-1211.
- ↑ Wagner, W.E. 1995. Convergent song preferences between female field crickets and acoustically orienting parasitoid flies. Behavioral Ecology 7: 279-285.
- ↑ Tinghitella, R.M. 2008. Rapid evolutionary change in a sexual signal: genetic control of the mutation 'flatwing' that renders male field crickets (Teleogryllus oceanicus) mute. Heredity 100: 261-267.
- ↑ Zuk, M., Rotenberry, J.T., and R.M. Tinghitella. 2006. Silent night: adaptive disappearance of a sexual signal in a parasitized population of field crickets. Biology Letters 2: 521-524.
- ↑ Zuk, M., Rotenberry, J.T., and R.M. Tinghitella. 2006. Silent night: adaptive disappearance of a sexual signal in a parasitized population of field crickets. Biology Letters 2: 521-524.
- ↑ Bailey, N.W. and M. Zuk. 2009. Field crickets changes mating preferences using remembered social information. Biology Letters- Animal Behavior 5: 449-451.
External links
- Cook Islands Biodiversity site, images and sounds