Thermal tolerance and the effects of temperature on air-gaping in the mangrove oyster, Crassostrea rhizophorae

Physiological responses to hypoxia and anoxia in the giant barnacle, Austromegabalanus psittacus (Molina, 1782)

“…The repeated opening and closing of the pneumostome observed by Barnes et al (1963) during aerial exposure of balanids could also explain the high variability in respiratory rates observed in A. psittacus during emersion and the frequent appearance of individuals that had no aerial respiration response throughout the measurement period (20 min). In general, it has been observed that in sessile animals, molluscs and crustaceans, aerial respiration capacity varied between species and according to environmental conditions, and that it is more ef cient when the animal has an effective ability to regulate the magnitude of the contact surface with the atmosphere, in relation to the prevailing environmental conditions of temperature and relative humidity (Barnes & Barnes, 1957;Barnes et al, 1963;Littlewood, 1989). A. psittacus possesses a high capacity for aerial respiration compared with other subtidal organisms, reaching values of over 60% of the oxygen uptake in submersion at 10 ± C and high humidity conditions.…”

Physiological responses to hypoxia and anoxia in the giant barnacle, Austromegabalanus psittacus (Molina, 1782)

“…The repeated opening and closing of the pneumostome observed by Barnes et al (1963) during aerial exposure of balanids could also explain the high variability in respiratory rates observed in A. psittacus during emersion and the frequent appearance of individuals that had no aerial respiration response throughout the measurement period (20 min). In general, it has been observed that in sessile animals, molluscs and crustaceans, aerial respiration capacity varied between species and according to environmental conditions, and that it is more ef cient when the animal has an effective ability to regulate the magnitude of the contact surface with the atmosphere, in relation to the prevailing environmental conditions of temperature and relative humidity (Barnes & Barnes, 1957;Barnes et al, 1963;Littlewood, 1989). A. psittacus possesses a high capacity for aerial respiration compared with other subtidal organisms, reaching values of over 60% of the oxygen uptake in submersion at 10 ± C and high humidity conditions.…”

Physiological responses to hypoxia and anoxia in the giant barnacle, Austromegabalanus psittacus (Molina, 1782)

“…The repeated opening and closing of the pneumostome observed by Barnes et al (1963) during aerial exposure of balanids could also explain the high variability in respiratory rates observed in A. psittacus during emersion and the frequent appearance of individuals that had no aerial respiration response throughout the measurement period (20 min). In general, it has been observed that in sessile animals, molluscs and crustaceans, aerial respiration capacity varied between species and according to environmental conditions, and that it is more ef cient when the animal has an effective ability to regulate the magnitude of the contact surface with the atmosphere, in relation to the prevailing environmental conditions of temperature and relative humidity (Barnes & Barnes, 1957;Barnes et al, 1963;Littlewood, 1989). A. psittacus possesses a high capacity for aerial respiration compared with other subtidal organisms, reaching values of over 60% of the oxygen uptake in submersion at 10 ± C and high humidity conditions.…”

Physiological responses to hypoxia and anoxia in the giant barnacle, Austromegabalanus psittacus (Molina, 1782)

“…The repeated opening and closing of the pneumostome observed by Barnes et al (1963) during aerial exposure of balanids could also explain the high variability in respiratory rates observed in A. psittacus during emersion and the frequent appearance of individuals that had no aerial respiration response throughout the measurement period (20 min). In general, it has been observed that in sessile animals, molluscs and crustaceans, aerial respiration capacity varied between species and according to environmental conditions, and that it is more ef cient when the animal has an effective ability to regulate the magnitude of the contact surface with the atmosphere, in relation to the prevailing environmental conditions of temperature and relative humidity (Barnes & Barnes, 1957;Barnes et al, 1963;Littlewood, 1989). A. psittacus possesses a high capacity for aerial respiration compared with other subtidal organisms, reaching values of over 60% of the oxygen uptake in submersion at 10 ± C and high humidity conditions.…”