Stress related blood values in Scyliorhinus canicula as live-indicators of physiological status after bottom trawling capture activity

Fish Welfare in Aquaculture: Physiological and Immunological Activities for Diets, Social and Spatial Stress on Mediterranean Aqua Cultured Species

“…Also, have been observed a similar level of phagocytic activities among dominant and subordinate fish, with a slight increase in the β specimens. These results are consistent with Cammarata et al ( 2012) which showed the same modulation response of peritoneal exudate cells (PECs) in subordinate individuals in the paired experimental In Dara et al (2023), the role of environmental sensibilization on the determination of hierarchy was explored using two experimental models in which the fish are either inserted in a time-sequential manner (sequential model) for territorial evaluation or simultaneously (simultaneous model) in an aquarium divided by a divisor panel. In the former, the fish were placed sequentially in the same aquarium, whereas in the second model, called the "confusion model", two fish were placed contemporarily in the same aquarium which was divided into two spaces by a curved plexiglass panel.…”

“…Subordinate sea bream appeared to be more stressed; indeed, they displayed greater stress levels (indicated by higher plasma cortisol, glucose and lactate levels), as well lower immunity (lower percentage of phagocytosis) than dominant fish [87]. Subsequently, Dara et al (2023) presented results of a study aimed at investigating the processes involved in the social organization of gilt-head sea bream and the role of territoriality in its formation. They used the two experimental approaches: in the first, so-called "sequential model", and the second, so-called "simultaneous model".…”

“…In Dara et al (2022), the introduction of one extra specimen into the experimental design, with respect to the previous work, increased the complexity of the interactions among the individuals, but it confirmed the establishment of a hierarchy obtained through aggression and feeding priority, confirming the stress pattern previously observed: in small groups of fish, stress is related to social position, as schematically represented in Figure 9, and the fish at the bottom of the hierarchy are affected by high stress levels, whereas the specimens at the top experience low stress levels. In Dara et al (2023), the role of environmental sensibilization on the determination of hierarchy was explored using two experimental models in which the fish are either inserted in a time-sequential manner (sequential model) for territorial evaluation or simultaneously (simultaneous model) in an aquarium divided by a divisor panel. In the former, the fish were placed sequentially in the same aquarium, whereas in the second model, called the "confusion model", two fish were placed contemporarily in the same aquarium which was divided into two spaces by a curved plexiglass panel.…”

Exploring the Impact of Contaminants of Emerging Concern on Fish and Invertebrates Physiology in the Mediterranean Sea

“…Indeed, to confirm this, Falco et al [ 27 ] in their studies conducted on the blood biomarkers of the catshark Scylyorinus canicular and suggested that over-exploitation can be detrimental to the physiological system of the aforementioned species. Moreover, Elasmobranchs have a unique physiology that can make them particularly vulnerable to environmental pollutants due to their slow growth, low reproductive rate, long lifespan, and occupancy of top trophic positions.…”

Exploring the elusive deep‐sea sharpnose sevengill shark (Heptranchias perlo) in the Adriatic Sea: Novel records, health assessments and conservation implications

“…However, it is important to note that acute trauma may not manifest detectable changes within the limited medical examinations conducted in this study. Given that the individuals were caught at substantial depths, their retrieval could lead to barotrauma (Brown et al, 2014; Carlson, 2012) and stress‐induced responses resulting in lethal physiological changes (Falco et al, 2023; Frick et al, 2010). Further studies, especially focussing on biochemical and physiological parameters, are imperative to better understand the cause of such high mortality.…”