Martins Maria Clara Iruzun

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Martins
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Maria Clara Iruzun
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  • Article
    Respiration cycle duration and seawater flux through open blowholes of humpback (Megaptera novaeangliae) and North Atlantic right (Eubalaena glacialis) whales
    (Wiley, 2020-05-29) Martins, Maria Clara Iruzun ; Miller, Carolyn ; Hamilton, Philip K. ; Robbins, Jooke ; Zitterbart, Daniel ; Moore, Michael J.
    Little is known about the dynamics of baleen whale respiratory cycles, especially the mechanics and activity of the blowholes and their interaction with seawater. In this study, the duration of complete respiration cycles (expiration/inhalation events) were quantified for the first time in two species: North Atlantic right whale (NARW) and humpback whale (HW) using high resolution, detailed imagery from an unoccupied aerial system (UAS). The mean duration of complete respiration cycles (expiration/inhalation event) in the NARW and HW were 3.07 s (SD = 0.503, n = 15) and 2.85 s (SD = 0.581, n = 21), respectively. Furthermore, we saw no significant differences in respiration cycle duration between age and sex classes in the NARW, but significant differences were observed between age classes in the HW. The observation of seawater covering an open blowhole was also quantified, with NARW having 20% of all breaths with seawater presence versus 90% in HW. Seawater incursion has not been described previously and challenges the general consensus that water does not enter the respiratory tract in baleen whales. Prevalent seawater has implications for the analysis and interpretation of exhaled respiratory vapor/mucosa samples, as well as for the potential inhalation of oil in spills.
  • Moving Image
    Humpback Whale Seawater Entry Videos
    (Woods Hole Oceanographic Institution, 2017-07-14) Martins, Maria Clara Iruzun ; Miller, Carolyn ; Hamilton, Philip K. ; Robbins, Jooke ; Zitterbart, Daniel ; Moore, Michael
    These UAS video files show 2 individual humpback whales at the moment where seawater covers and enters the blowholes. Videos here are at half the speed of original UAS videos in order to fully capture the fast moment of seawater entering the blowhole. All videos were taken at Stellwagen Bank under NMFS NOAA Permits 17355, 17355-01 and 21371, and with approval from the Woods Hole Oceanographic Institution Institutional Animal Care and Use Committee.