Phytohaemagglutinin skin-swelling test in scarlet rosefinch males: low-quality birds respond more strongly

Vinkler, Michal; Schnitzer, Jan E.; Munclinger, Pavel; Albrecht, Tomáš

doi:10.1016/j.anbehav.2011.10.001

Cited by 46 publications

(45 citation statements)

References 66 publications

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“…This is true if we assume that the above-mentioned ambient temperature in 2011 is an example of the harsher weather conditions. This result suggests that the PHA response is the adaptive component of immunity, as was reported in a few recent studies (Martin et al 2006;Vinkler et al 2012). Our results may also suggest that with higher ambient temperature and probably lower energy expenditure, adult females needed fewer resources for their organisms, so more resources remained for the offspring.…”

Section: Discussionsupporting

confidence: 73%

“…The wing web swelling after PHA injection reflects the efficiency of cell-mediated immunity (Smiths et al 1999;Tella et al 2002;Martin et al 2006;Biard et al 2015) and has been shown to be a condition-dependent trait (Saino et al 1997;Brinkhof et al 1999;Moreno et al 1999;Hawley et al 2005), which predicts survival (Christe et al 2000). Although this is a common method, studies on House Sparrows Passer domesticus (Martin et al 2006) and Scarlet Rosefinch Carpodacus erythrinus (Vinkler et al 2012) have shown that a response to PHA is more complex than had been previously thought: not only does it correlate with the T-cell-mediated immune response, but it is also connected to innate and adaptive immune functions.…”

Section: Measurement Of the T-cell-mediated Immune Responsementioning

confidence: 99%

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Ambient temperature impacts the effect of experimental immunisation of Great Tit and Eurasian Blue Tit females on the PHA response of their offspring

Grzędzicka

Kubacka

2018

J Ornithol

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The immune system is a particularly costly activity that competes with other functions of an organism, such as reproduction, although research is lacking on the importance of environmental factors for the parental investment in offspring immunity. This study examines whether ambient temperature impacts the effect of a sheep red blood cell (SRBC) challenge of the adult female's immune system on the offspring's phytohaemagglutinin (PHA) responses and whether this impact differs between the Great Tit and Eurasian Blue Tit. In both studied bird species, offspring wing web swelling was lower after immunisation of the mother (although only in 1 research year) compared with the control (PBS) group of females. A stronger or weaker PHA response of chicks resulted from higher or lower parental investment, respectively. In Eurasian Blue Tits, the nestlings' PHA responses were positively related to ambient temperature in both experimental groups, while in Great Tits they were positively related to temperature in the control group, but no significant relationship was found in the SRBC nests. This suggests that the impact of ambient temperature is species-specific. Keywords Environment · Female · Sheep red blood cells · Nestlings · Immunocompetence Zusammenfassung Die Umgebungstemperatur beeinflusst den Effekt einer experimentellen Immunisierung von Kohl-und Blaumeisenweibchen auf die PHA-Antwort ihrer NachkommenDas Immunsystem ist besonders energieintensiv und steht in Konkurrenz mit anderen Lebensfunktionen von Organismen, z.B. der Fortpflanzung. Allerdings mangelt es an Untersuchungen zur Bedeutung von Umweltfaktoren für die elterliche Investition in die Immunität der Nachkommen. Diese Studie untersucht, ob die Umgebungstemperatur den Effekt einer Herausforderung des Immunsystems adulter Weibchen mittels roter Blutkörperchen vom Schaf (SRCB) auf die Phytohämagglutinin (PHA)-Antwort der Nachkommen beeinflusst und ob sich dieser Effekt zwischen Kohl-und Blaumeisen unterscheidet. Bei beiden untersuchten Vogelarten wiesen die Nachkommen nach Immunisierung der Mutter eine geringere Schwellung am Flügel auf als die Nachkommen nicht immunisierter Weibchen (Kontrollgruppe, der nur Puffer gespritzt wurde); allerdings war dies nur in einem Untersuchungsjahr der Fall. Die stärkere oder schwächere PHA-Antwort der Küken resultierte also aus einem höheren bzw. niedrigeren elterlichen Aufwand. Bei Blaumeisen stand die PHA-Antwort in beiden experimentellen Gruppen Communicated by L. Fusani.

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Section: Discussionsupporting

confidence: 73%

Section: Measurement Of the T-cell-mediated Immune Responsementioning

confidence: 99%

Ambient temperature impacts the effect of experimental immunisation of Great Tit and Eurasian Blue Tit females on the PHA response of their offspring

Grzędzicka

Kubacka

2018

J Ornithol

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“…For example, Vinkler and collaborators [67] found a negative association between the response to the phytohaemagglutinin skin-swelling test and ornament saturation of rosefinch males, indicating stronger immune responsiveness in inferior males. In that study, a major involvement of basophils in the swelling response was shown, which indicates the nonspecific nature of the reaction.…”

Section: Discussionmentioning

confidence: 99%

Parasitism and Physiological Trade-Offs in Stressed Capybaras

et al. 2013

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Parasites play a key role in regulating wildlife population dynamics, but their impact on the host appears to be context-dependent. Evidence indicates that a synergistic interaction between stress, host condition and parasites is implicated in this phenomenon, but more studies are needed to better understand this context-dependency. With the goal to assess the net effect of two types of chronic stress on various host-parasite interactions, we conducted an experiment in capybaras to evaluate the impact of food restriction and physical restraint on the infection intensity of specific gastrointestinal nematodes and coccidia, and how these stressors affected the growth, body condition, and some immuno-physiological parameters. Our hypothesis was that both forms of stress would result in an alteration in the host-parasite interactions, with deteriorated condition and reduced immunological investment leading to high parasite burdens and vice versa. Stressed capybaras had significantly higher coccidia infection intensities; but among individuals that were smaller, those stressed consistently showed lower helminth burdens than controls. Both stress treatments had a marked negative impact on growth and body condition, but concomitantly they had a significant positive effect on some components of the immune system. Our results suggest, on the one hand, that during prolonged periods of stress capybaras preventatively invest in some components of their immunity, such as innate humoural defenses and cells that combat helminths, which could be considered a stress-dependent prophylaxis. On the other hand, stress was found to cause greater infection intensities of protozoans but lower burdens of nematodes, indicating that the relationship between stress, physiological trade-offs and infection depends on the type of parasite in question. Moreover, both findings might be related in a causal way, as one of the immunological parameters enhanced in stressed capybaras is associated with the immune response to control helminths.

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“…Older strain ACRBC, which have higher mortality than modern strain Ross 308, has higher humoral immune response and lower cell-mediated immune response (Cheema et al, 2003). The magnitude of the swelling response of PHA injection is negatively associated with healthier individuals in scarlet rosefinch males (Vinkler et al, 2012). The hypothesis is that because cell-mediated immune response attacks living cells, increased response creates excessive inflammation within the body.…”

Section: Discussionmentioning

confidence: 99%

Dietary Supplementation of <i>Ocimum Gratissimum </i>Improves Immune Response without Affecting the Growth Performance and Blood Characteristics in Taiwan Country Chicken

et al. 2014

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Ocimum gratissimum (OG) was investigated in this study to determine its effect on the immune capability of black-feathered Taiwan country chickens. A total of 90 four-week-old male chickens were randomly assigned to a control group, which was fed with basal diet (BD), and two experimental groups, which were fed with a 0.2 and 0.4 g/kg OG-supplemented BD. During the experimental period, feed intake and body weight were recorded every two weeks to determine growth performance and feed efficiency. Blood was collected from the brachial vein of the chicken wing to obtain blood characteristics at 12 weeks of age. OG supplementation yielded no significant difference in growth performance and blood characteristics. The hemagglutination test showed that, compared with the control, the 0.4 g/kg BD group was able to maintain a significantly higher antibody titer level over two weeks after goat red blood cells injection (p＜0.05), suggesting that 0.4 g/kg improves humoral immune response. The phytohemagglutinin test showed that wattle swelling in the 0.2-0.4 g/kg BD groups was reduced more significantly than that in the control group (p＜0.05), suggesting that OG supplementation reduces cell-mediated immune response. Taken together, these findings suggest that although OG does not enhance growth or blood characteristics, the inverse changes in humoral and cell-mediated immune response may improve the overall health of the chickens.

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Phytohaemagglutinin skin-swelling test in scarlet rosefinch males: low-quality birds respond more strongly

Cited by 46 publications

References 66 publications

Ambient temperature impacts the effect of experimental immunisation of Great Tit and Eurasian Blue Tit females on the PHA response of their offspring

Ambient temperature impacts the effect of experimental immunisation of Great Tit and Eurasian Blue Tit females on the PHA response of their offspring

Parasitism and Physiological Trade-Offs in Stressed Capybaras

Dietary Supplementation of <i>Ocimum Gratissimum </i>Improves Immune Response without Affecting the Growth Performance and Blood Characteristics in Taiwan Country Chicken

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