Perissodus microlepis
| Perissodus microlepis | |
|---|---|
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Cichlidae |
| Genus: | Perissodus |
| Species: | P. microlepis |
| Binomial name | |
| Perissodus microlepis Boulenger, 1898 | |
| Synonyms | |
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Perissodus microlepis is a species of cichlid endemic to Lake Tanganyika. This species reaches a length of 11 centimetres (4.3 in) TL. This species can also be found in the aquarium trade.[2] It is a scale-eating 'parasite' on other fish species. It occurs in two distinct morphological forms. One morph has mouth parts twisted to the left, enabling it to eat scales off its victim’s right flank. In contrast, the other morph, whose mouth is twisted to the right, eats scales off its victim’s left flank. The relative abundance of the two morphs in populations is regulated by frequency-dependent selection.[3][4][5]
Dorsal view of right-bending (left) and left-bending (right) mouth morphs[5]
Predation behaviour of a right-bending mouth morph[5]
References
- ↑ Bigirimana, C. 2006. Perissodus microlepis. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 17 May 2013.
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Perissodus microlepis" in FishBase. April 2013 version.
- ↑ Hori, M. 1993. Frequency-dependent natural selection in the handedness of scale-eating cichlid fish. Science 260: 216–219.
- ↑ Stewart, T. A. and Albertson, R. C. (2010) "Evolution of a unique predatory feeding apparatus: functional anatomy, development and a genetic locus for jaw laterality in Lake Tanganyika scale-eating cichlids" BMC Biology, 8 (1): 8. doi:10.1186/1741-7007-8-8
- 1 2 3 Lee HJ, Kusche H, Meyer A (2012) Handed Foraging Behavior in Scale-Eating Cichlid Fish: Its Potential Role in Shaping Morphological Asymmetry. PLoS ONE 7(9): e44670. doi:10.1371/journal.pone.0044670
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