Ecological immunology: life history trade-offs and immune defense in birds

Norris, Ken

doi:10.1093/beheco/11.1.19

Cited by 780 publications

(736 citation statements)

References 38 publications

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“…However, as we only measured two components of the innate immune system, we cannot rule out that other branches of (innate) immunity were differently affected. It is possible that individuals optimized their investment in each component of the immune system, depending on the costs and benefits of investment in a particular component and on the conditions they encounter (Norris and Evans 2000).…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, without knowledge of an individual's degree of pathogen infection, high immune responses can be interpreted in at least two different ways, i.e. as an indication of a well-functioning immune system (indicative of good individual condition), or as a consequence of intense pathogen infection (indicative of poor condition; Norris and Evans 2000). In the latter case, high lysis scores in birds from small broods would indicate that these birds are exposed to a higher number of infections.…”

Section: Discussionmentioning

confidence: 99%

“…Klasing 2004;Lochmiller and Deerenberg 2000;Norris and Evans 2000;Sheldon and Verhulst 1996), immune function can be expected to be suppressed in large broods because of higher nutritional stress and increased sibling competition (e.g. Naguib et al 2004;Saino et al 1997).…”

Section: Introductionmentioning

confidence: 99%

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Effects of early developmental conditions on innate immunity are only evident under favourable adult conditions in zebra finches

Coster

Verhulst

Koetsier

et al. 2011

Naturwissenschaften

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Long-term effects of unfavourable conditions during development can be expected to depend on the quality of the environment experienced by the same individuals during adulthood. Yet, in the majority of studies, long-term effects of early developmental conditions have been assessed under favourable adult conditions only. The immune system might be particularly vulnerable to early environmental conditions as its development, maintenance and use are thought to be energetically costly. Here, we studied the interactive effects of favourable and unfavourable conditions during nestling and adult stages on innate immunity (lysis and agglutination scores) of captive male and female zebra finches (Taeniopygia guttata). Nestling environmental conditions were manipulated by a brood size experiment, while a foraging cost treatment was imposed on the same individuals during adulthood. This combined treatment showed that innate immunity of adult zebra finches is affected by their early developmental conditions and varies between both sexes. Lysis scores, but not agglutination scores, were higher in individuals raised in small broods and in males. However, these effects were only present in birds that experienced low foraging costs. This study shows that the quality of the adult environment may shape the long-term consequences of early developmental conditions on innate immunity, as long-term effects of nestling environment were only evident under favourable adult conditions

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effects of early developmental conditions on innate immunity are only evident under favourable adult conditions in zebra finches

Coster

Verhulst

Koetsier

et al. 2011

Naturwissenschaften

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“…Several studies have documented that increased reproductive effort is associated with either increased susceptibility to parasitism and disease [31] An induced mutation (allele) at the INDY gene causes a surprising relationship among traits: homozygous mutant females exhibit increased longevity without lowered fecundity [72]. The mutation circumvents the negative relationship between life span and reproduction.…”

Section: Immune Functionmentioning

confidence: 99%

The cost of reproduction: the devil in the details

Harshman¹,

Zera²

2007

Trends in Ecology & Evolution

630

566

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“…Without knowledge about changes in lymphocyte numbers, a healthy immunocompetent animal is difficult to distinguish from a diseased animal (Norris and Evans, 2000; but see Ros et al, 2006). Therefore, to have an additional indicator of immunocompetence, we measured the immune response to dinitrophenylated keyhole limpet hemocyanine (DNP-KLH, Merck Calbiochem).…”

Section: Blood Cell Counts and Analysis Of Antibody Responsesmentioning

confidence: 99%

Does access to the bluestreak cleaner wrasse Labroides dimidiatus affect indicators of stress and health in resident reef fishes in the Red Sea?

Ros¹,

Lusa²,

Meyer³

et al. 2011

Hormones and Behavior

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Interactions between the bluestreak cleaner wrasse Labroides dimidiatus and its client reef fish are a textbook example of interspecific mutualism. The fact that clients actively visit cleaners and invite inspection, together with evidence that cleaners eat many client ectoparasites per day, indeed strongly suggests a mutualistic relationship. What remains unknown is how parasite removal affects the physiology of clients and thereby their body condition, health, and immune function. Here we addressed these issues in a field study in Ras Mohammed National Park, Egypt. In our study area, small reef patches are inter-spaced with areas of sandy substrate, thereby preventing many species (i.e., residents, including cleaner wrasses) from travelling between the reef patches. This habitat structure leads to a mosaic of resident clients with and without access to bluestreak cleaner wrasses, further referred to as "cleaner access", on which we focused our study. We found that residents with cleaner access had higher body condition than residents without cleaner access. However, indicators of stress like variation in cortisol levels corrected for handling time and various immune parameters were apparently unaffected by cleaner access. In fact antibody responses were significantly higher in fishes without cleaner access. This suggests that cleaner access decreases the need for active immunity and that this releases resources that might be allocated to other functions such as somatic growth and reproduction.

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Ecological immunology: life history trade-offs and immune defense in birds

Cited by 780 publications

References 38 publications

Effects of early developmental conditions on innate immunity are only evident under favourable adult conditions in zebra finches

Effects of early developmental conditions on innate immunity are only evident under favourable adult conditions in zebra finches

The cost of reproduction: the devil in the details

Does access to the bluestreak cleaner wrasse Labroides dimidiatus affect indicators of stress and health in resident reef fishes in the Red Sea?

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