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
Thomas A Stewart, R Craig Albertson

Abstract

While bilaterality is a defining characteristic of triploblastic animals, several assemblages have managed to break this symmetry in order to exploit the adaptive peaks garnered through the lateralization of behaviour or morphology. One striking example of an evolved asymmetry in vertebrates comes from a group of scale-eating cichlid fishes from Lake Tanganyika. Members of the Perissodini tribe of cichlid fishes have evolved dental and craniofacial asymmetries in order to more effectively remove scales from the left or right flanks of prey. Here we examine the evolution and development of craniofacial morphology and laterality among Lake Tanganyika scale-eating cichlids. Using both geometric and traditional morphometric methods we found that the craniofacial evolution in the Perissodini involved discrete shifts in skeletal anatomy that reflect differences in habitat preference and predation strategies. Further, we show that the evolutionary history of the Perissodini is characterized by an accentuation of craniofacial laterality such that certain taxa show elaborate sided differences in craniofacial shape consistent with the sub-partitioning of function between sides of the head during attacks. Craniofacial laterality in the sc...Continue Reading

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Citations

Mar 5, 2013·BMC Biology·Anthony J SaviolaStephen P Mackessy
Mar 20, 2010·Journal of Biology·A Richard Palmer
May 9, 2012·Zoological Science·Nahid Sultana LuckyMichio Hori
Jan 1, 2016·Developmental Biology·Kara E Powder, R Craig Albertson
Jul 1, 2011·International Journal of Evolutionary Biology·Tetsumi Takahashi, Stephan Koblmüller
Jul 1, 2011·International Journal of Evolutionary Biology·Michaela Kerschbaumer, Christian Sturmbauer
Sep 24, 2010·Journal of Morphology·Anastasia V KharlamovaKarl G Lark
Apr 23, 2014·Genesis : the Journal of Genetics and Development·Claudia CompagnucciMichael J Depew
Nov 14, 2014·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Karen E Sears
Dec 4, 2012·Developmental Biology·John N GriffinMichael J Depew
Jun 6, 2012·International Journal of Evolutionary Biology·R Craig AlbertsonKenneth A Mann
Jul 10, 2018·Evolution; International Journal of Organic Evolution·Adrian IndermaurWalter Salzburger
Dec 5, 2018·The Journal of Experimental Biology·Yuichi TakeuchiYoichi Oda
Nov 21, 2012·Nature Reviews. Neuroscience·Miguel L ConchaStephen W Wilson
Aug 5, 2017·Zoological Science·Michio HoriYuichi Takeuchi
Aug 17, 2019·Evolution; International Journal of Organic Evolution·Moira R ConithR Craig Albertson
Apr 11, 2020·Frontiers in Neuroanatomy·Maria Elena Miletto PetrazziniAndrea Messina
May 6, 2020·Current Biology : CB·Thomas G H Diekwisch
Jun 27, 2019··Siti Raihan HalilanSakhinah Abu Bakar

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