Fig. 2
From: Lateral line system diversification during the early stages of ecological speciation in cichlid fish
The cranial lateral line canal system of Astatotilapia calliptera from Salima, Lake Malawi – a sister population of the two A. calliptera ecomorphs found in Lake Masoko. a Annotated microCT scan of the lateral head, showing the cranial canal pores (red) and the approximate location of the cranial canals (blue). MD = mandibular canal; PR = preopercular canal; IO = infraorbital canal; SO = supraorbital canal; OT = otic canal; PO = post-otic canal; ST = supratemporal canal; TC = anterior trunk canal. b-e The landmarking regime of this study, used to approximate canal pore area. Each pore is uniquely coded. Red points are the landmark locations used; each pore is bounded by nine fixed landmarks placed equidistant along the outer edge of the pore. b The isolated preopercular and otic canals, and labelled pores. c The ventral-facing pores of the preopercular canal found within the preoperculum. d The isolated mandibular canal and pores, located within the dentary bone and angulo-articular bones. e The isolated infraorbital canal and pores, partially within the lacrimal bone. f Annotated microCT scan of the ventral view of the head. g A stitched photograph of a DASPEI stained Astatotilapia calliptera imaged under a fluorescent lamp and filter. Fluorescence images were also taken of the ventral view of the lower jaw, as the neuromasts there are not fully visible from the lateral perspective