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934 results
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Simultaneous observations of haemolymph flow and ventilation in marine spider crabs at different temperatures: a flow weighted MRI study.
Bock C, Frederich M, Wittig RM, Pörtner HO. Bock C, et al. Magn Reson Imaging. 2001 Oct;19(8):1113-24. doi: 10.1016/s0730-725x(01)00414-3. Magn Reson Imaging. 2001. PMID: 11711236
Ventilation and haemolymph circulation were investigated during progressive cooling from 12 degrees C to 2 degrees C. The anatomical resolution of MR images from Maja squinado obtained with a standard spin echo sequence were suitable to resolve the structures of var …
Ventilation and haemolymph circulation were investigated during progressive cooling from 12 degrees C to 2 degrees C. The anat …
In vivo MR spectroscopy and MR imaging on non-anaesthetized marine fish: techniques and first results.
Bock C, Sartoris FJ, Pörtner HO. Bock C, et al. Magn Reson Imaging. 2002 Feb;20(2):165-72. doi: 10.1016/s0730-725x(02)00482-4. Magn Reson Imaging. 2002. PMID: 12034337
Oxygen-limited thermal tolerance in Antarctic fish investigated by MRI and (31)P-MRS.
Mark FC, Bock C, Pörtner HO. Mark FC, et al. Among authors: bock c. Am J Physiol Regul Integr Comp Physiol. 2002 Nov;283(5):R1254-62. doi: 10.1152/ajpregu.00167.2002. Am J Physiol Regul Integr Comp Physiol. 2002. PMID: 12376420
The normoxic increase of blood flow leveled off beyond 7 degrees C, indicating a cardiovascular capacity limitation. Ventilatory effort displayed an exponential rise in both groups. ...In both groups, the slope of pH(i) changes followed the alpha-stat pattern below 6 degre …
The normoxic increase of blood flow leveled off beyond 7 degrees C, indicating a cardiovascular capacity limitation. Ventilatory effo …
Oxygen limitation of thermal tolerance in cod, Gadus morhua L., studied by magnetic resonance imaging and on-line venous oxygen monitoring.
Lannig G, Bock C, Sartoris FJ, Pörtner HO. Lannig G, et al. Among authors: bock c. Am J Physiol Regul Integr Comp Physiol. 2004 Oct;287(4):R902-10. doi: 10.1152/ajpregu.00700.2003. Epub 2004 Jun 17. Am J Physiol Regul Integr Comp Physiol. 2004. PMID: 15205188
An exponential increase in heart rate occurred between 2 and 16 degrees C (Q(10) = 2.38 +/- 0.35). Thermal sensitivity was reduced beyond 16 degrees C when cardiac arrhythmia became visible. ...Thermal limitation of circulatory performance in cod set in below 2 degr …
An exponential increase in heart rate occurred between 2 and 16 degrees C (Q(10) = 2.38 +/- 0.35). Thermal sensitivity was reduced be …
Oxygen limited thermal tolerance in fish?--Answers obtained by nuclear magnetic resonance techniques.
Pörtner HO, Mark FC, Bock C. Pörtner HO, et al. Among authors: bock c. Respir Physiol Neurobiol. 2004 Aug 12;141(3):243-60. doi: 10.1016/j.resp.2004.03.011. Respir Physiol Neurobiol. 2004. PMID: 15288597 Review.
Critical temperatures in the cephalopod Sepia officinalis investigated using in vivo 31P NMR spectroscopy.
Melzner F, Bock C, Pörtner HO. Melzner F, et al. Among authors: bock c. J Exp Biol. 2006 Mar;209(Pt 5):891-906. doi: 10.1242/jeb.02054. J Exp Biol. 2006. PMID: 16481578
Under control conditions (15 degrees C), changes in muscle phospho-L-arginine (PLA) and inorganic phosphate (Pi) levels could be linearly related to frequently occurring, high-pressure mantle contractions with pressure amplitudes (MMPA) of >0.2 kPa. ...Subjecting animal …
Under control conditions (15 degrees C), changes in muscle phospho-L-arginine (PLA) and inorganic phosphate (Pi) levels could be line …
Temperature-dependent oxygen extraction from the ventilatory current and the costs of ventilation in the cephalopod Sepia officinalis.
Melzner F, Bock C, Pörtner HO. Melzner F, et al. Among authors: bock c. J Comp Physiol B. 2006 Sep;176(7):607-21. doi: 10.1007/s00360-006-0084-9. Epub 2006 May 18. J Comp Physiol B. 2006. PMID: 16710699
Routine metabolic rate (rmr) rose exponentially between 11 and 23 degrees C, while below (8 degrees C) and above (26 degrees C) this temperature range, rmr was significantly depressed. ...Oxygen extraction from the ventilatory current (EO(2)) decreased in a s …
Routine metabolic rate (rmr) rose exponentially between 11 and 23 degrees C, while below (8 degrees C) and above (26 degrees …
Effects of environmental hypercapnia on animal physiology: a 13C NMR study of protein synthesis rates in the marine invertebrate Sipunculus nudus.
Langenbuch M, Bock C, Leibfritz D, Pörtner HO. Langenbuch M, et al. Among authors: bock c. Comp Biochem Physiol A Mol Integr Physiol. 2006 Aug;144(4):479-84. doi: 10.1016/j.cbpa.2006.04.017. Epub 2006 May 11. Comp Biochem Physiol A Mol Integr Physiol. 2006. PMID: 16753322
We followed the incorporation of (13)C-labelled phenylalanine into muscular protein via high-resolution NMR spectroscopy. Protein synthesis decreased by about 60% at a medium pH of 6.70 and a consequently lowered intracellular pH (pHi). ...
We followed the incorporation of (13)C-labelled phenylalanine into muscular protein via high-resolution NMR spectroscopy. Protein syn …
Coordination between ventilatory pressure oscillations and venous return in the cephalopod Sepia officinalis under control conditions, spontaneous exercise and recovery.
Melzner F, Bock C, Pörtner HO. Melzner F, et al. Among authors: bock c. J Comp Physiol B. 2007 Jan;177(1):1-17. doi: 10.1007/s00360-006-0104-9. Epub 2006 Jul 26. J Comp Physiol B. 2007. PMID: 16868753
AVC peak blood velocity (v(AVC)) in animals of 232 (+/- 30 SD) g wet mass at 15 degrees C was found to be 14.2 (+/- 7.1) cm s(-1), AVC stroke volume (SV(AVC)) was 0.2 (+/- 0.1) ml stroke(-1), AVC minute volume (MV(AVC)) amounted to 5.5 (+/- 2.8) ml min(-1). ...MRI measurem …
AVC peak blood velocity (v(AVC)) in animals of 232 (+/- 30 SD) g wet mass at 15 degrees C was found to be 14.2 (+/- 7.1) cm s(-1), AV …
Allometry of thermal limitation in the cephalopod Sepia officinalis.
Melzner F, Bock C, Pörtner HO. Melzner F, et al. Among authors: bock c. Comp Biochem Physiol A Mol Integr Physiol. 2007 Feb;146(2):149-54. doi: 10.1016/j.cbpa.2006.07.023. Epub 2006 Oct 4. Comp Biochem Physiol A Mol Integr Physiol. 2007. PMID: 17234440
Cuttlefish (Sepia officinalis) routine metabolic rate was determined in response to acute thermal changes at a rate of 1 degrees C h(-1) for a variety of animal sizes (15-496 g wet mass, laboratory reared at 15 degrees C). ...Large animals (>100 g body mass) alre …
Cuttlefish (Sepia officinalis) routine metabolic rate was determined in response to acute thermal changes at a rate of 1 degrees C h( …
934 results
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