Cas Eikenaar
YOU?
Author Swipe
View article: Constitutive immune function is not associated with fuel stores in spring migrating passerine birds
Constitutive immune function is not associated with fuel stores in spring migrating passerine birds Open
Migratory birds may either upregulate their immune system during migration as they might encounter novel pathogens or downregulate their immune system as a consequence of trade‐offs with the resource costs of migration. Support for the lat…
View article: Constitutive immune function is not associated with fuel stores in spring migrating passerine birds
Constitutive immune function is not associated with fuel stores in spring migrating passerine birds Open
Migratory birds may either upregulate their immune system during migration as they might encounter novel pathogens or downregulate their immune system as a consequence of trade-offs with the resource costs of migration. Support for the lat…
View article: The oxidative balance and stopover departure decisions in a medium- and a long-distance migrant
The oxidative balance and stopover departure decisions in a medium- and a long-distance migrant Open
Background Birds have extremely elevated metabolic rates during migratory endurance flight and consequently can become physiologically exhausted. One feature of exhaustion is oxidative damage, which occurs when the antioxidant defense syst…
View article: Recovery of constitutive immune function after migratory endurance flight in free-living birds
Recovery of constitutive immune function after migratory endurance flight in free-living birds Open
Strenuous physical activity can negatively affect constitutive innate immune function (CIF), the always present first line of defence against pathogens. CIF is non-specific, and thus vital when encountering novel pathogens. A lowered CIF l…
View article: Measurements of immune function in migrating birds from Recovery of constitutive immune function after migratory endurance flight in free-living birds
Measurements of immune function in migrating birds from Recovery of constitutive immune function after migratory endurance flight in free-living birds Open
Strenuous physical activity can negatively affect constitutive innate immune function (CIF), the always present first line of defence against pathogens. CIF is non-specific, and thus vital when encountering novel pathogens. A lowered CIF l…
View article: Do departure and flight route decisions correlate with immune parameters in migratory songbirds?
Do departure and flight route decisions correlate with immune parameters in migratory songbirds? Open
Many songbirds migrate twice a year to exploit seasonally available resources. These journeys are energetically demanding and energy reserves of these small birds are limited. Accordingly, most of the time migrating is spent during stopove…
View article: Understanding the ecological and evolutionary function of stopover in migrating birds
Understanding the ecological and evolutionary function of stopover in migrating birds Open
Global movement patterns of migratory birds illustrate their fascinating physical and physiological abilities to cross continents and oceans. During their voyages, most birds land multiple times to make so‐called ‘stopovers’. Our current k…
View article: Changes in fat mass affect the motivation to migrate in northern wheatears
Changes in fat mass affect the motivation to migrate in northern wheatears Open
To fuel their migratory endurance flights, most birds accumulate large quantities of fat prior to departure. It therefore seems logical that the decision to depart on a migratory flight depends on fuel stores, at least to some extent; very…
View article: Migrant blackbirds, <i>Turdus merula</i>, have higher plasma levels of polyunsaturated fatty acids compared to residents, but not enhanced fatty acid unsaturation index
Migrant blackbirds, <i>Turdus merula</i>, have higher plasma levels of polyunsaturated fatty acids compared to residents, but not enhanced fatty acid unsaturation index Open
Birds have been observed to have dietary preferences for unsaturated fatty acids during migration. Polyunsaturated fatty acids (PUFAs) may increase the exercise performance of migrant birds; however, PUFAs are also peroxidation prone and m…
View article: Stopover departure decisions in songbirds: do long-distance migrants depart earlier and more independently of weather conditions than medium-distance migrants?
Stopover departure decisions in songbirds: do long-distance migrants depart earlier and more independently of weather conditions than medium-distance migrants? Open
Background Songbirds following distinct migration strategies (e.g. long- vs. short- to medium-distance migrants) often differ in their speed of migration during autumn and, thus, are assumed to face different time constraints. During migra…
View article: Migrating birds rapidly increase constitutive immune function during stopover
Migrating birds rapidly increase constitutive immune function during stopover Open
Migratory flight is physiologically highly demanding and has been shown to negatively affect multiple parameters of constitutive immune function (CIF), an animal's first line of physiological defence against infections. In between migrator…
View article: Oxidative damage to lipids is rapidly reduced during migratory stopovers
Oxidative damage to lipids is rapidly reduced during migratory stopovers Open
Most migrating birds need to stopover in between flights in order to refuel. Lately, additional purposes of stopover have been suggested, including physiological recovery from metabolically demanding migratory flight. One apparently unavoi…
View article: Immune function in wheatears from Migrating birds rapidly increase constitutive immune function during stopover
Immune function in wheatears from Migrating birds rapidly increase constitutive immune function during stopover Open
Original data as used in the analyses
View article: Corrigendum to: Not just fuel: energy stores are correlated with immune function and oxidative damage in a long-distance migrant
Corrigendum to: Not just fuel: energy stores are correlated with immune function and oxidative damage in a long-distance migrant Open
[This corrects the article DOI: 10.1093/cz/zoz009.][This corrects the article DOI: 10.1093/cz/zoz009.].
View article: Not just fuel: energy stores are correlated with immune function and oxidative damage in a long-distance migrant
Not just fuel: energy stores are correlated with immune function and oxidative damage in a long-distance migrant Open
In many animals, catabolic and anabolic periods are temporally separated. Migratory birds alternate energy expenditure during flight with energy accumulation during stopover. The size of the energy stores at stopover affects the decision t…
View article: Nocturnal departure timing in songbirds facing distinct migratory challenges
Nocturnal departure timing in songbirds facing distinct migratory challenges Open
Most migratory songbirds travel between their breeding areas and wintering grounds through a series of nocturnal flights. The timing of their departures defines the potential flight duration and thus the distance covered during a migratory…
View article: A hidden cost of migration? Innate immune function versus antioxidant defense
A hidden cost of migration? Innate immune function versus antioxidant defense Open
Migration is energetically demanding and physiologically challenging. Migrating birds, for example, need to boost their antioxidant defenses to defeat the pro‐oxidants produced during high energetic activity. The enhanced antioxidant defen…
View article: Corticosterone and timing of migratory departure in a songbird
Corticosterone and timing of migratory departure in a songbird Open
Bird migration entails replenishing fuel stores at stopover sites. There, individuals make daily decisions whether to resume migration, and must also decide their time of departure. Variation in departure timing affects the total time requ…
View article: Migratory common blackbirds have lower innate immune function during autumn migration than resident conspecifics
Migratory common blackbirds have lower innate immune function during autumn migration than resident conspecifics Open
Animals need a well-functioning immune system to protect themselves against pathogens. The immune system, however, is costly and resource trade-offs with other demands exist. For migratory animals several (not mutually exclusive) hypothese…
View article: Data supporting the article from Corticosterone and timing of migratory departure in a songbird
Data supporting the article from Corticosterone and timing of migratory departure in a songbird Open
Bird migration entails replenishing fuel stores at stopover sites. There, individuals make daily decisions whether to resume migration, and must also decide their time of departure. Variation in departure timing affects the total time requ…
View article: Supplementary material from "Corticosterone and timing of migratory departure in a songbird"
Supplementary material from "Corticosterone and timing of migratory departure in a songbird" Open
Bird migration entails replenishing fuel stores at stopover sites. There, individuals make daily decisions whether to resume migration, and must also decide their time of departure. Variation in departure timing affects the total time requ…
View article: Data supporting the article from Corticosterone and timing of migratory departure in a songbird
Data supporting the article from Corticosterone and timing of migratory departure in a songbird Open
Bird migration entails replenishing fuel stores at stopover sites. There, individuals make daily decisions whether to resume migration, and must also decide their time of departure. Variation in departure timing affects the total time requ…