Effects of exogenous cortisol on drinking rate and water content in developing larvae of tilapia (Oreochromis mossambicus) were examined. Both freshwater- and seawater-adapted larvae showed increases in drinking rates with development. Drinking rates of seawater-adapted larvae were about four- to ninefold higher than those of freshwater-adapted larvae from day 2 to day 5 after hatching. Seawater-adapted larvae showed declines in drinking rate and water content at 4 and 14 h, respectively, after immersion in 10 mg L(-1) cortisol. In the case of freshwater-adapted larvae, the drinking rate decreased after 8 h of cortisol immersion, while the water content did not show a significant change even after 32 h of cortisol immersion. In a subsequent experiment of transfer from freshwater to 20 ppt (parts per thousand, salinity) seawater, immersion in 10 mg L(-1) cortisol for 8-24 h enhanced the drinking rate in larvae at 4 h after transfer, but no significant difference was found in water contents between cortisol-treated and control groups following transfer. These results suggest that cortisol is involved in the regulation of drinking activity in developing tilapia larvae.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1086/316747 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Ghrelin suppresses water intake with a different physiological significance from atrial natriuretic peptide in conscious seawater-acclimated eels.
J Exp Biol
January 2025
Laboratory of Physiology, Atmosphere and Ocean Research Institute, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan.
In general, ghrelin is known as one of the orexigenic hormones in mammals. On the other hand, it has been shown that ghrelin inhibits water intake, which appear to be inconsistent with its role in the feeding response. In this study, the effect of ghrelin on water intake was comprehensively addressed using conscious seawater-acclimated eels known as an experimental model for water drinking behaviour.
View Article and Find Full Text PDFPrevalence of chronic kidney disease among Chinese adults with diabetes: a nationwide population-based cross-sectional study.
Lancet Reg Health West Pac
February 2025
Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, Shanghai, China.
Background: To date, comprehensive data on the distribution of chronic kidney disease (CKD), the most prevalent comorbidity in diabetes, among Chinese adults with diabetes is lacking. Additionally, research gaps exist in understanding the association between CKD and cardiovascular health (CVH), an integrated indicator of lifestyle and metabolic control, within a nationwide sample of Chinese adults with diabetes.
Methods: A nationally community-based cross-sectional survey was conducted in 2018-2020.
[Impact of Municipal Policies and Plans on Indicators of Access to Basic Sanitation].
Cien Saude Colet
January 2025
Programa de Pós-Graduação em Administração, Universidade Federal de Viçosa. Av. Peter Henry Rolfs s/n, Campus Universitário. 36570-000 Viçosa MG Brasil.
This study aimed to understand the impact of municipal basic sanitation policies and plans on the rate of access to drinking water and sewage services. For this, data were collected from the 853 municipalities of Minas Gerais regarding the provision of sanitation, as well as socioeconomic, quality of life and demographic indicators, treated with the t-test techniques for differences between means and Propensity Score Matching. The results revealed the need for greater sanitation planning in the state since a significant portion of municipalities do not have formal planning instruments for the sector.
View Article and Find Full Text PDFAn evaluation of the scapular osseous free flap in maxillary reconstruction using the FACE-Q Head and Neck Cancer Module for patient-reported outcome measures.
J Plast Surg Hand Surg
January 2025
Department of Plastic and Reconstructive Surgery, Skåne University Hospital, Malmö, Sweden.
Introduction: Health-related quality of life (HR-QoL) outcomes following maxillary reconstruction with the scapular osseous free flap (SOFF) are lacking. Material and Methods: To determine these outcomes, a study of patients who completed maxillary reconstruction with flap survival of the SOFF between 2016 and 2023 was conducted, using Face-Q Head and Neck Cancer Module (FACE-Q).
Results: Eligible patients had at least six months of follow-up.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!