A comparative study of tissue protein synthesis rates in an Antarctic, Harpagifer antarcticus and a temperate, Lipophrys pholis teleost
This study investigates how low temperatures effect tissue protein synthesis and hence tissue growth in a polar fish species. Groups of Antarctic, Harpagifer antarcticus and temperate, Lipophrys pholis, were acclimated to a range of overlapping water temperatures and protein synthesis was measure in white muscle (WM), liver and gastrointestinal tract (GIT). WM protein synthesis rates increased linearly with temperature in both species (H. antarcticus 0.16-0.23%.d-1, L. pholis, 0.31-0.76%.d-1), while liver (H. antarcticus 0.24-0.27%.d-1, L. pholis, 0.44-1.03%.d-1) and GIT were unaffected by temperature in H. antarcticus but...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - May 8, 2024 Category: Physiology Authors: Keiron P P Fraser Lloyd S Peck Melody S Clark Andrew Clarke Source Type: research

Effect of temporal thermal stress on Penaeus vannamei: Growth performance and physiological plasticity
Comp Biochem Physiol A Mol Integr Physiol. 2024 May 5:111653. doi: 10.1016/j.cbpa.2024.111653. Online ahead of print.ABSTRACTThe present study evaluated the effect of temporal periods of hypothermia and hyperthermia, followed by an optimal temperature recovery phase on the growth, survival, and physiological response of Penaeus vannamei. Post-larvae were exposed to stress periods for 7 and 14 days at 22 °C and 32 °C each, followed by a recovery phase at 28 °C to complete seven experimental weeks, and were compared with a control group maintained at 28 °C. Weight gain, specific growth rate, feed intake, feed conversion ...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - May 7, 2024 Category: Physiology Authors: Diana R Barajas-Sandoval Cristina Escobedo-Fregoso Eduardo Quiroz-Guzman Dariel Tovar-Ram írez Clara Ad èle Py Alberto Pe ña-Rodríguez Source Type: research

The effects of the predictability of acclimatory temperature on the growth and thermal tolerance of juvenile Spinibarbus sinensis
Comp Biochem Physiol A Mol Integr Physiol. 2024 May 3:111652. doi: 10.1016/j.cbpa.2024.111652. Online ahead of print.ABSTRACTHeated effluent injection, cold hypolimnetic water inputs from dams, and extreme weather events can lead to unpredictable temperature fluctuations in natural waters, impacting fish performance and fitness. We hypothesized that fish exposed to such unpredictable fluctuations would exhibit weaker growth and enhanced thermal tolerance compared to predictable conditions. Qingbo (Spinibarbus sinensis) was selected as the experimental subject in this study. The qingbo were divided into a constant temperatu...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - May 4, 2024 Category: Physiology Authors: Cheng Fu Ke-Ying Zhou Yue Hu Yong-Fei Zhang Shi-Jian Fu Source Type: research

Effects of fasting and environmental factors on appetite regulators in pond loach Misgurnus anguillicaudatus
In this study, we examined the effects of fasting, as well as increased temperature and decreased oxygen levels on food intake and transcript levels of appetite regulators. Fasted fish had lower blood glucose levels, and lower expression levels of intestine CCK and PYY, and brain CART1, but had higher levels of brain orexin and ghrelin than fed fish. Fish held at 30 °C had higher food intake, glucose levels, and mRNA levels of intestine CCK and PYY, and brain CART2, but lower brain orexin levels than fish at 20 °C. Fish held at low oxygen levels had a lower food intake, higher intestine CCKa and ghrelin, and brain orexin...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - May 4, 2024 Category: Physiology Authors: Jannik Kuhn Annika Lindstrom Helene Volkoff Source Type: research

The effects of the predictability of acclimatory temperature on the growth and thermal tolerance of juvenile Spinibarbus sinensis
Comp Biochem Physiol A Mol Integr Physiol. 2024 May 2:111652. doi: 10.1016/j.cbpa.2024.111652. Online ahead of print.ABSTRACTHeated effluent injection, cold hypolimnetic water inputs from dams, and extreme weather events can lead to unpredictable temperature fluctuations in natural waters, impacting fish performance and fitness. We hypothesized that fish exposed to such unpredictable fluctuations would exhibit weaker growth and enhanced thermal tolerance compared to predictable conditions. Qingbo (Spinibarbus sinensis) was selected as the experimental subject in this study. The qingbo were divided into a constant temperatu...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - May 4, 2024 Category: Physiology Authors: Cheng Fu Ke-Ying Zhou Yue Hu Yong-Fei Zhang Shi-Jian Fu Source Type: research

Effects of fasting and environmental factors on appetite regulators in pond loach Misgurnus anguillicaudatus
In this study, we examined the effects of fasting, as well as increased temperature and decreased oxygen levels on food intake and transcript levels of appetite regulators. Fasted fish had lower blood glucose levels, and lower expression levels of intestine CCK and PYY, and brain CART1, but had higher levels of brain orexin and ghrelin than fed fish. Fish held at 30 °C had higher food intake, glucose levels, and mRNA levels of intestine CCK and PYY, and brain CART2, but lower brain orexin levels than fish at 20 °C. Fish held at low oxygen levels had a lower food intake, higher intestine CCKa and ghrelin, and brain orexin...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - May 4, 2024 Category: Physiology Authors: Jannik Kuhn Annika Lindstrom Helene Volkoff Source Type: research

The effects of the predictability of acclimatory temperature on the growth and thermal tolerance of juvenile Spinibarbus sinensis
Comp Biochem Physiol A Mol Integr Physiol. 2024 May 2:111652. doi: 10.1016/j.cbpa.2024.111652. Online ahead of print.ABSTRACTHeated effluent injection, cold hypolimnetic water inputs from dams, and extreme weather events can lead to unpredictable temperature fluctuations in natural waters, impacting fish performance and fitness. We hypothesized that fish exposed to such unpredictable fluctuations would exhibit weaker growth and enhanced thermal tolerance compared to predictable conditions. Qingbo (Spinibarbus sinensis) was selected as the experimental subject in this study. The qingbo were divided into a constant temperatu...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - May 4, 2024 Category: Physiology Authors: Cheng Fu Ke-Ying Zhou Yue Hu Yong-Fei Zhang Shi-Jian Fu Source Type: research

Effects of fasting and environmental factors on appetite regulators in pond loach Misgurnus anguillicaudatus
In this study, we examined the effects of fasting, as well as increased temperature and decreased oxygen levels on food intake and transcript levels of appetite regulators. Fasted fish had lower blood glucose levels, and lower expression levels of intestine CCK and PYY, and brain CART1, but had higher levels of brain orexin and ghrelin than fed fish. Fish held at 30 °C had higher food intake, glucose levels, and mRNA levels of intestine CCK and PYY, and brain CART2, but lower brain orexin levels than fish at 20 °C. Fish held at low oxygen levels had a lower food intake, higher intestine CCKa and ghrelin, and brain orexin...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - May 4, 2024 Category: Physiology Authors: Jannik Kuhn Annika Lindstrom Helene Volkoff Source Type: research

Ammonia transport in the excretory system of mosquito larvae (Aedes aegypti): Rh protein expression and the transcriptome of the rectum
Comp Biochem Physiol A Mol Integr Physiol. 2024 Apr 24;294:111649. doi: 10.1016/j.cbpa.2024.111649. Online ahead of print.ABSTRACTThe role of the mosquito excretory organs (Malpighian tubules, MT and hindgut, HG) in ammonia transport as well as expression and function of the Rhesus (Rh protein) ammonia transporters within these organs was examined in Aedes aegypti larvae and adult females. Immunohistological examination revealed that the Rh proteins are co-localized with V-type H+-ATPase (VA) to the apical membranes of MT and HG epithelia of both larvae and adult females. Of the two Rh transporter genes present in A. aegyp...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - April 26, 2024 Category: Physiology Authors: Andrea C Durant Andrew Donini Source Type: research

Ammonia transport in the excretory system of mosquito larvae (Aedes aegypti): Rh protein expression and the transcriptome of the rectum
Comp Biochem Physiol A Mol Integr Physiol. 2024 Apr 24;294:111649. doi: 10.1016/j.cbpa.2024.111649. Online ahead of print.ABSTRACTThe role of the mosquito excretory organs (Malpighian tubules, MT and hindgut, HG) in ammonia transport as well as expression and function of the Rhesus (Rh protein) ammonia transporters within these organs was examined in Aedes aegypti larvae and adult females. Immunohistological examination revealed that the Rh proteins are co-localized with V-type H+-ATPase (VA) to the apical membranes of MT and HG epithelia of both larvae and adult females. Of the two Rh transporter genes present in A. aegyp...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - April 26, 2024 Category: Physiology Authors: Andrea C Durant Andrew Donini Source Type: research

Ammonia transport in the excretory system of mosquito larvae (Aedes aegypti): Rh protein expression and the transcriptome of the rectum
Comp Biochem Physiol A Mol Integr Physiol. 2024 Apr 24;294:111649. doi: 10.1016/j.cbpa.2024.111649. Online ahead of print.ABSTRACTThe role of the mosquito excretory organs (Malpighian tubules, MT and hindgut, HG) in ammonia transport as well as expression and function of the Rhesus (Rh protein) ammonia transporters within these organs was examined in Aedes aegypti larvae and adult females. Immunohistological examination revealed that the Rh proteins are co-localized with V-type H+-ATPase (VA) to the apical membranes of MT and HG epithelia of both larvae and adult females. Of the two Rh transporter genes present in A. aegyp...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - April 26, 2024 Category: Physiology Authors: Andrea C Durant Andrew Donini Source Type: research

Ammonia transport in the excretory system of mosquito larvae (Aedes aegypti): Rh protein expression and the transcriptome of the rectum
Comp Biochem Physiol A Mol Integr Physiol. 2024 Apr 24;294:111649. doi: 10.1016/j.cbpa.2024.111649. Online ahead of print.ABSTRACTThe role of the mosquito excretory organs (Malpighian tubules, MT and hindgut, HG) in ammonia transport as well as expression and function of the Rhesus (Rh protein) ammonia transporters within these organs was examined in Aedes aegypti larvae and adult females. Immunohistological examination revealed that the Rh proteins are co-localized with V-type H+-ATPase (VA) to the apical membranes of MT and HG epithelia of both larvae and adult females. Of the two Rh transporter genes present in A. aegyp...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - April 26, 2024 Category: Physiology Authors: Andrea C Durant Andrew Donini Source Type: research

Ammonia transport in the excretory system of mosquito larvae (Aedes aegypti): Rh protein expression and the transcriptome of the rectum
Comp Biochem Physiol A Mol Integr Physiol. 2024 Apr 24;294:111649. doi: 10.1016/j.cbpa.2024.111649. Online ahead of print.ABSTRACTThe role of the mosquito excretory organs (Malpighian tubules, MT and hindgut, HG) in ammonia transport as well as expression and function of the Rhesus (Rh protein) ammonia transporters within these organs was examined in Aedes aegypti larvae and adult females. Immunohistological examination revealed that the Rh proteins are co-localized with V-type H+-ATPase (VA) to the apical membranes of MT and HG epithelia of both larvae and adult females. Of the two Rh transporter genes present in A. aegyp...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - April 26, 2024 Category: Physiology Authors: Andrea C Durant Andrew Donini Source Type: research

Ammonia transport in the excretory system of mosquito larvae (Aedes aegypti): Rh protein expression and the transcriptome of the rectum
Comp Biochem Physiol A Mol Integr Physiol. 2024 Apr 24;294:111649. doi: 10.1016/j.cbpa.2024.111649. Online ahead of print.ABSTRACTThe role of the mosquito excretory organs (Malpighian tubules, MT and hindgut, HG) in ammonia transport as well as expression and function of the Rhesus (Rh protein) ammonia transporters within these organs was examined in Aedes aegypti larvae and adult females. Immunohistological examination revealed that the Rh proteins are co-localized with V-type H+-ATPase (VA) to the apical membranes of MT and HG epithelia of both larvae and adult females. Of the two Rh transporter genes present in A. aegyp...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - April 26, 2024 Category: Physiology Authors: Andrea C Durant Andrew Donini Source Type: research

Ammonia transport in the excretory system of mosquito larvae (Aedes aegypti): Rh protein expression and the transcriptome of the rectum
Comp Biochem Physiol A Mol Integr Physiol. 2024 Apr 24:111649. doi: 10.1016/j.cbpa.2024.111649. Online ahead of print.ABSTRACTThe role of the mosquito excretory organs (Malpighian tubules, MT and hindgut, HG) in ammonia transport as well as expression and function of the Rhesus (Rh protein) ammonia transporters within these organs was examined in Aedes aegypti larvae and adult females. Immunohistological examination revealed that the Rh proteins are co-localized with V-type H+-ATPase (VA) to the apical membranes of MT and HG epithelia of both larvae and adult females. Of the two Rh transporter genes present in A. aegypti, ...
Source: Comparative Biochemistry and Physiology. Part A, Molecular and integrative physiology. - April 26, 2024 Category: Physiology Authors: Andrea C Durant Andrew Donini Source Type: research