Physiological Impairment as a Result of Bile Accumulation in an Apex Predator, the Tiger Shark (Galeocerdo cuvier Péron & Lesueur, 1822)
| Autor: | Verônica Takatsuka, Danny Morick, Ana Paula Chaves, Yuri Niella, Natascha Wosnick, Jorge Luiz Silva Nunes, Fábio H. V. Hazin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
food.ingredient
Zoology chemical and pharmacologic phenomena Biology hepatobiliary alteration Generalist and specialist species Article food lcsh:Zoology medicine Juvenile lcsh:QL1-991 gallbladder Apex predator Starvation lcsh:Veterinary medicine General Veterinary Tiger Bile accumulation physiological markers Galeocerdo biology.organism_classification lcsh:SF600-1100 Animal Science and Zoology medicine.symptom human activities Tiger shark |
| Zdroj: | Animals, Vol 10, Iss 2030, p 2030 (2020) Animals : an Open Access Journal from MDPI |
| ISSN: | 2076-2615 |
| Popis: | Simple Summary Sharks rely on a diet with high lipid content, depending on gallbladder proper functioning for lipid emulsification, absorption, and subsequent hepatic storage. The present study reports a physiological impairment due to bile accumulation in juvenile tiger sharks and the possible causes of such condition. Abstract Physiological adaptations have evolved to help sharks face rapid periods of feast. Tiger sharks are generalist apex predators that rely on a high-lipid/protein diet. To achieve a satisfactory nutritional condition, proper lipid absorption and hepatic storage are needed. Bile secretion in sharks is low and sporadic but increases during short periods of fasting. The present study describes a physiological impairment caused by bile accumulation in juvenile tiger sharks, possibly due to prolonged fasting. These evidences suggest that, even though sharks have adaptations that prevent them from dying from starvation, alarming physiological alterations might occur. Future studies are needed to assess how such a condition can affect wild populations, as well as possible sublethal consequences that could impact their long-term survival. |
| Databáze: | OpenAIRE |
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