Costs of epibionts on Antarctic sea spiders

Tobalske, Bret W.; Moran, Amy L.; Shishido, Caitlin M.; Woods, H. Arthur

doi:10.1007/s00227-018-3389-9

Cited by 5 publications

(3 citation statements)

References 34 publications

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“…Indeed, in greater than 200 h of casual observation in the laboratory and field, we most often saw C. megalonyx walking across the substrate, while other species were more stationary. Likewise, C. megalonyx is capable of rapid and active capture of pelagic prey [35], and maximum escape speeds of C. megalonyx were almost twice as fast as those of A. glacialis (0.023 cm s 21 versus 0.013 cm s 21 ) [57]. Greater cuticle porosity may be one mechanism that allows C. megalonyx to evolve both large size and maintain high levels of activity.…”

Section: Discussionmentioning

confidence: 96%

Polar gigantism and the oxygen–temperature hypothesis: a test of upper thermal limits to body size in Antarctic pycnogonids

et al. 2019

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The extreme and constant cold of the Southern Ocean has led to many unusual features of the Antarctic fauna. One of these, polar gigantism, is thought to have arisen from a combination of cold-driven low metabolic rates and high oxygen availability in the polar oceans (the ‘oxygen–temperature hypothesis'). If the oxygen–temperature hypothesis indeed underlies polar gigantism, then polar giants may be particularly susceptible to warming temperatures. We tested the effects of temperature on performance using two genera of giant Antarctic sea spiders (Pycnogonida), Colossendeis and Ammothea , across a range of body sizes. We tested performance at four temperatures spanning ambient (−1.8°C) to 9°C. Individuals from both genera were highly sensitive to elevated temperature, but we found no evidence that large-bodied pycnogonids were more affected by elevated temperatures than small individuals; thus, these results do not support the predictions of the oxygen–temperature hypothesis. When we compared two species, Colossendeis megalonyx and Ammothea glacialis , C. megalonyx maintained performance at considerably higher temperatures. Analysis of the cuticle showed that as body size increases, porosity increases as well, especially in C. megalonyx , which may compensate for the increasing metabolic demand and longer diffusion distances of larger animals by facilitating diffusive oxygen supply.

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Section: Discussionmentioning

confidence: 96%

Polar gigantism and the oxygen–temperature hypothesis: a test of upper thermal limits to body size in Antarctic pycnogonids

et al. 2019

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“…Microsensors have a thin tip (down to 1 μm), which allows measurements with the same spatial resolution as the tip size. The sensors can be moved along a profile axis to measure gradients. , Microsensors have been applied in many different fields, including biochemistry, , plant science, − microbiology, , and biomedicine, , but their application in electrochemical systems remains limited.…”

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confidence: 99%

“…The sensors can be moved along a profile axis to measure gradients. 7 , 8 Microsensors have been applied in many different fields, including biochemistry, 9 , 10 plant science, 11 − 13 microbiology, 14 , 15 and biomedicine, 16 , 17 but their application in electrochemical systems remains limited.…”

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Methodology for In Situ Microsensor Profiling of Hydrogen, pH, Oxidation–Reduction Potential, and Electric Potential throughout Three-Dimensional Porous Cathodes of (Bio)Electrochemical Systems

et al. 2023

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We developed a technique based on the use of microsensors to measure pH and H 2 gradients during microbial electrosynthesis. The use of 3D electrodes in (bio)electrochemical systems likely results in the occurrence of gradients from the bulk conditions into the electrode. Since these gradients, e.g., with respect to pH and reactant/product concentrations determine the performance of the electrode, it is essential to be able to accurately measure them. Apart from these parameters, also local oxidation−reduction potential and electric field potential were determined in the electrolyte and throughout the 3D porous electrodes. Key was the realization that the presence of an electric field disturbed the measurements obtained by the potentiometric type of microsensor. To overcome the interference on the pH measure, a method was validated where the signal was corrected for the local electric field measured with the electric potential microsensor. The developed method provides a useful tool for studies about electrode design, reactor engineering, measuring gradients in electroactive biofilms, and flow dynamics in and around 3D porous electrodes of (bio)electrochemical systems.

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Shrimp Hygiene: Antifouling Adaptations

Bauer

2023

Fish &Amp; Fisheries Series

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Costs of epibionts on Antarctic sea spiders

Cited by 5 publications

References 34 publications

Polar gigantism and the oxygen–temperature hypothesis: a test of upper thermal limits to body size in Antarctic pycnogonids

Polar gigantism and the oxygen–temperature hypothesis: a test of upper thermal limits to body size in Antarctic pycnogonids

Methodology for In Situ Microsensor Profiling of Hydrogen, pH, Oxidation–Reduction Potential, and Electric Potential throughout Three-Dimensional Porous Cathodes of (Bio)Electrochemical Systems

Shrimp Hygiene: Antifouling Adaptations

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