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Figure 6 | Frontiers in Zoology

Figure 6

From: The cerato-mandibular ligament: a key functional trait for grazing in damselfishes (Pomacentridae)

Figure 6

Plot of principal components 1 and 2 for all groups studied. The variables that load on each axis are indicated by the arrows, each arrow has a figure representing the variable: #1) maximum relative distance (MRM) between the neurocranium and the hyoid apparatus; #2) maximal lower jaw depression; #3) mean closing speed of the lower jaw; #4) maximum acceleration of relative separation between the neurocranium and hyoid apparatus; #5) duration separating the time of the bite and the MRM between the neurocranium and hyoid apparatus; #6) synchronization between the hyoid apparatus and mandible accelerations; #7) mouth closing duration. The different kinds of behaviors are color and shape coded: black circles for sound production (SP), dark grey circles for biting filamentous algae (FA), light grey circles for biting fixed piece of food (FPF) and light grey triangles for biting fixed piece of food while the c-md ligament is ablated (FPF*).

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