... in architectures, and (3) compared the metabolic cost of transport across species and how it scales with swimming speed. To measure swimming speeds, we recorded swimming salp colonies using in situ videography while SCUBA diving in the open ocean. To estimate the cost of transport, we measured the respiration...

... ) was suppressed after 1 week in both deoxygenation treatments in A. cervicornis , and after 2 weeks in S. siderea and P. astreoides exposed to severe or moderate treatments, respectively. Respiration rates were lower than controls in A. cervicornis and S. siderea after 1 and 2 weeks of severe deoxygenation...

... the physiological response and trade-offs of marine organisms to ocean acidification, ocean warming and the combined effect of these two drivers. Long-term exposure of O. fasciata to high temperature and low pH affected survival, respiration and regeneration rates, growth rate, calcification/dissolution...

... the metathoracic spiracles, which open in the intersegmental cleft ( Movie 2 ). In contrast, Komai (1998 , 2001 ) stated that A. convolvuli has no large air sacs and does not use unidirectional ventilation flow. Komai describes augmented respiration during flight with P O 2  values between 6.27 and 0.10 kPa...

... of Biologists Ltd 2024 Summary: This Commentary describes the functional interactions between cardiac output and other traits in the O 2 transport pathway that underlie the adaptive evolution of aerobic capacity. Evolutionary physiology O 2 cascade Respiration High-altitude adaptation...

... and intercellular changes in phenotype. Mitochondrial respiration rate in permeabilized and isolated flight muscle was measured in adults. We found that permeabilized flight muscle fibers from the hypoxic group had increased mitochondrial oxygen consumption, but this was not replicated in isolated flight muscle...

...://www.biologists.com/user-licence-1-1/ Summary: Scaling of metabolic traits differs among life stages and taxa of corals. Data compilation and empirical results suggest that variation in scaling is determined by life history and surface area to biomass ratio. Scleractinia Respiration Planula...

... Summary: Acclimation to constant temperature results in thermal specialization, whereas acclimation to fluctuating temperatures reduces thermal sensitivity and helps maintain hypoxia tolerance across a broader range of temperatures in killifish. Teleost Thermal breadth Respiration O 2 transport...

... detrimental if experienced at another, as a result of seasonal acclimation. Temperature is the most critical variable as it affects most aspects of an organism's physiology. To address this, we quantified arm regeneration and respiration in the Australian brittle star Ophionereis schayeri for 10 weeks...

... respiration ( Chapman and Mckenzie, 2009 ; Kramer and McClure, 1982 ) in combination with emergence to cope with aquatic hypoxia. Aquatic surface respiration allows fishes to selectively breathe from the relatively well-oxygenated layer of water at the air–water interface, thus reducing the severity...

... play an important role in larval X. laevis respiration – air-breathing rates increase as oxygen partial pressure decreases or the branchial (gill) surfaces become covered with food ( Bles, 1906 ; Feder and Wassersug, 1984 ; Feder et al., 1984 ). However, Hastings and Burggren (1995) found...

... interests. © 2022. Published by The Company of Biologists Ltd 2022 Summary: Insect success on land relies upon limiting water loss from the gut, body surface and respiratory system and also upon enhancing water uptake. Malpighian tubule Cuticle Hindgut Respiration Water vapour...

... in the range 5–30°C on respiration rates of isolated cardiac mitochondria from rainbow trout ( Oncorhync h us mykiss ) studied by high-resolution respirometry and spectrophotometric enzyme activity assays. Arrhenius breakpoint temperature analysis indicated that mitochondrial respiration rates under...

... physiological performance using flow-through respirometry. We used a Li-Cor LI-6400XT Portable Photosynthesis System (Li-Cor Biosciences, Lincoln, NE, USA) configured for the 6400-89 animal respiration chamber following Li-Cor specifications and using the ‘Insect Rd’ measurement configuration. We set the system...

...B. L. Coggins; C. E. Anderson; R. Hasan; A. C. Pearson; M. N. Ekwudo; J. R. Bidwell; L. Y. Yampolsky ABSTRACT Respiration rates of ectothermic organisms are affected by environmental temperatures, and sustainable metabolism at high temperatures sometimes limits heat tolerance. Organisms...

... of respiration dynamics and energetic cost in different situations is the kissing bug Rhodnius prolixus ( Bradley et al., 2003 ; Contreras and Bradley, 2009 , 2010 ; Rolandi et al., 2014 ; Heinrich and Bradley, 2014 ; Leis et al., 2016 ; Paim et al., 2016 ). As obligated blood-feeding hemimetabolous...

... performance suggest that these organelles may play a role in shaping thermal limits at the organismal level. Mitochondria Temperature Thermal tolerance CT max Performance Respiration As with all biochemical reactions, mitochondrial processes are profoundly influenced by temperature...

... to speculate about selection for enhanced ventilatory capacity in human evolution. While thoracic size influences overall respiratory volume, our results suggest that rib mobility is also a key feature of aerobic respiration. As noted above, modern humans have a unique costovertebral joint morphology in which...

...Lucia F. Jacobs; Basil el Jundi; Almut Kelber; Barbara Webb ABSTRACT One of the outstanding questions in evolution is why Homo erectus became the first primate species to evolve the external pyramid, i.e. an external nose. The accepted hypothesis for this trait has been its role in respiration...

... intake Phocoena Respiration As apex predators in the marine environment, cetaceans exert a major top-down control on trophic energy cascades and facilitate nutrient recycling ( Katona and Whitehead, 1988 ; Roman et al., 2014 ). Yet, specific quantification of the ecological impact...