Representative locomotor responses of Hb+ N . coriiceps and Hb- C . aceratus to warming.

• 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; Antarc*
• Online Access: https://doi.org/10.1371/journal.pone.0252359.g001

(A) and (B) represent time plots of absolute instantaneous displacement (left axes) of a single specimen of N . coriiceps and of a single specimen of C . aceratus , respectively. Time “0” corresponds to the beginning of the temperature ramp; negative values correspond to the final sixty minutes of an overnight acclimation in the experimental tank. Red lines represent absolute temperature (right axes) of water, with the maximum corresponding to the LOE. Insets below time plots depict locomotion trajectories for 20 minute time periods at select temperatures (maximal temperatures during these episodes are shown next to the insets). (i) Baseline station-holding. (ii) Early responses to initial rise in temperature. (iii) First period of reduced motility. (iv) Intense locomotion and startle-like behaviors. (v) Second period of reduced motility with multiple startle-like behaviors. (vi) Onset of LOE.