Ecoimmune reallocation in a native lizard in response to the presence of invasive, venomous fire ants in their shared environment
| Autor: | Maria Horvat-Gordon, Tracy Langkilde, Paul A. Bartell, Catherine Tylan |
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| Rok vydání: | 2020 |
| Předmět: |
Male
0106 biological sciences 0301 basic medicine Fire ant Physiology Ecoimmunology Zoology chemical and pharmacologic phenomena Environment 010603 evolutionary biology 01 natural sciences Antibodies Invasive species 03 medical and health sciences Immune system Stress Physiological Immunity biology.animal Genetics Animals Molecular Biology Ecology Evolution Behavior and Systematics Respiratory Burst Phagocytes Ecology biology Ants Lizard fungi food and beverages Lizards Complement System Proteins biochemical phenomena metabolism and nutrition biology.organism_classification ANT Sting 030104 developmental biology behavior and behavior mechanisms Female Animal Science and Zoology Introduced Species |
| Zdroj: | Journal of Experimental Zoology Part A: Ecological and Integrative Physiology. 333:792-804 |
| ISSN: | 2471-5646 2471-5638 |
| DOI: | 10.1002/jez.2418 |
| Popis: | Exposure to stressors over prolonged periods can have fitness-relevant consequences, including suppression of immune function. We tested for effects of presence of an invasive species threat on a broad panel of immune functions of a coexisting lizard. Eastern fence lizards (Sceloporus undulatus) have been exposed to invasive fire ants (Solenopsis invicta) for over 80 years. Fire ants sting and envenomate lizards, causing physiological stress, but we do not have a comprehensive understanding of the broad immune consequences of lizard exposure to fire ant presence. We conducted a suite of immune measures on fence lizards caught from areas with long histories of fire ant invasion and lizards from areas not yet invaded by fire ants. The effect of fire ant presence on immunity varied depending on the immune component measured: within fire ant invaded areas, some portions of immunity were suppressed (lymphocytic cell-mediated immunity, complement), some were unaffected (phagocytic respiratory burst, natural antibodies), and some were enhanced (anti-fire ant immunoglobulin M, basophils) compared to within uninvaded areas. Rather than fire ants being broadly immunosuppressing, as generally assumed, the immune response appears to be tailored to this specific stressor: the immune measures that were enhanced are important to the lizards' ability to handle envenomation, whereas those that were unaffected or suppressed are less critical to surviving fire ant encounters. Several immune measures were suppressed in reproductive females when actively producing follicles, which may make them more susceptible to immunosuppressive costs of stressors such as interactions with fire ants. |
| Databáze: | OpenAIRE |
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