Axial movements during temperature induced startle-like responses in Hb+ N . coriiceps and Hb- C . aceratus .

• Main Authors: Iskander I. Ismailov (11751816), Jordan B. Scharping (11751819), Iraida E. Andreeva (11751822), Michael J. Friedlander (11751825)
• Format: Still Image
• Language: unknown
• Published: 2021
• Subjects: Genetics; Physiology; Evolutionary Biology; Ecology; Sociology; Inorganic Chemistry; Environmental Sciences not elsewhere classified; Biological Sciences not elsewhere classified; unavoidable progressive hyperthermia; recent studies forecast; notothenia coriiceps </; increasing metabolic demand; include avoidance reactions; essential thermoregulatory mechanism; especially aquatic stenotherms; ecologically relevant setting; chaenocephalus aceratus </; call much attention; augment gill ventilation; many ectothermic animals; >) lacks hemoglobin; div >< p; acute ambient warming; limited thermal range; ambient warming; thermal stress; many ectotherms; expresses hemoglobin; thus facilitating; temperature continues; specific maneuvers; specific locomotor; scaleless integument; respiratory responses; repetitive startle; obligatory thermoconformation; manifests respiratory; locomotor coupling; like maneuvers; less tolerant; habitat selection; detrimental effects; deleterious effects; branchial respiration; antarctic teleosts; Antarctic; S Bend; Antarc*
• Online Access: https://doi.org/10.1371/journal.pone.0252359.g003

(A) N . coriiceps during an S-bend maneuver shown at 33 ms intervals (at +11.05°C). (B) N . coriiceps during a C-bend turn shown at 100 ms intervals (at +12.4°C). (C) C . aceratus during a C-bend turn shown at 100 ms intervals (at +8.5°C). (D) C . aceratus during a withdrawal-like maneuver shown at 100 ms intervals (at +11.5°C). In all panels, ventral views (pectoral fins not shown) are depicted. Gray vertical arrows indicate the position of the midline at the beginning of turning maneuvers. Arrow diagrams on the right depict of the head orientation during turns, at time intervals indicated above. Each arrow connects the position of the fish nose with the center of mass. Red arrows indicate final direction of locomotion.