Version 1
: Received: 1 June 2023 / Approved: 1 June 2023 / Online: 1 June 2023 (13:40:17 CEST)
How to cite:
Ruiz, N.; García-Meilán, I.; Khansari, A. R.; Teles, M.; Pastor, J.; Tort, L. Hematological and Physiological Responses under Repeated Acute Hypoxia in Rainbow Trout (Onchorynchus mykiss). Preprints2023, 2023060097. https://doi.org/10.20944/preprints202306.0097.v1
Ruiz, N.; García-Meilán, I.; Khansari, A. R.; Teles, M.; Pastor, J.; Tort, L. Hematological and Physiological Responses under Repeated Acute Hypoxia in Rainbow Trout (Onchorynchus mykiss). Preprints 2023, 2023060097. https://doi.org/10.20944/preprints202306.0097.v1
Ruiz, N.; García-Meilán, I.; Khansari, A. R.; Teles, M.; Pastor, J.; Tort, L. Hematological and Physiological Responses under Repeated Acute Hypoxia in Rainbow Trout (Onchorynchus mykiss). Preprints2023, 2023060097. https://doi.org/10.20944/preprints202306.0097.v1
APA Style
Ruiz, N., García-Meilán, I., Khansari, A. R., Teles, M., Pastor, J., & Tort, L. (2023). Hematological and Physiological Responses under Repeated Acute Hypoxia in Rainbow Trout (<em>Onchorynchus mykiss</em>). Preprints. https://doi.org/10.20944/preprints202306.0097.v1
Chicago/Turabian Style
Ruiz, N., Josep Pastor and Lluis Tort. 2023 "Hematological and Physiological Responses under Repeated Acute Hypoxia in Rainbow Trout (<em>Onchorynchus mykiss</em>)" Preprints. https://doi.org/10.20944/preprints202306.0097.v1
Abstract
Oxygen is a limiting factor both in the environment and production systems, so reduction may become a stressor. Diel cyclic hypoxia occurs with varying frequency and duration in freshwater habitats. Under a stressful situation fish activate the hypothalamic-pituitary-interrenal axis (HPI) which triggers the release of cortisol that induces secondary and tertiary responses. The recovery of individuals depends on their ability to modulate physiological, and biochemical responses to maintain homeostasis. The aim of this study is to determine the hematological and physiological responses of rainbow trout under repeated hypoxic stress in different time points. The methodology of the experiment consisted of dividing the fish in 5 different treatment groups, 2 control groups and 3 hypoxia groups. Every exposure consisted in decrease the dissolved oxygen concentration from 8mg O2/L to 2mg O2/L for 1 hour. After the exposure the fish went to a recovery tank until the sampling procedure. Hematological and physiological results show a habituation of the fish to different parameters such as hematocrit, hemoglobin and mean corpuscular volume among others. Overall, our results indicate an ability of rainbow trout to resist this type of hypoxic exposures and a habituation of fish to repeated hypoxia as observed in the different measured parameters.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
