List of works - Indrikis Krams

A Life History Approach to the Female Sexual Orientation Spectrum: Evolution, Development, Causal Mechanisms, and Health

scientific article published on 18 September 2018

A dark cuticle allows higher investment in immunity, longevity and fecundity in a beetle upon a simulated parasite attack.

scientific article published on 31 May 2016

A head start for life history development? Family income mediates associations between height and immune response in men

scientific article published on 21 December 2018

Adiposity, compared with masculinity, serves as a more valid cue to immunocompetence in human mate choice ⬇️

scientific article published on January 22, 2013

Alarm calls of wintering great tits Parus major: warning of mate, reciprocal altruism or a message to the predator?

An Evolutionary Approach to Clinical Pharmacopsychology.

scientific article published on 3 November 2017

Attacks of songbirds in mixed‐species flocks by Eurasian Sparrowhawks: strategies of predators and potential prey

scientific article published in 2020

Body height, immunity, facial and vocal attractiveness in young men.

scientific article published on 18 October 2014

Clutch-size variation in Western Palaearctic secondary hole-nesting passerine birds in relation to nest box design

scientific article published in 2014

Correction to 'Adiposity, compared to masculinity, serves as a more valid cue to immunocompetence in human mate choice'.

scientific article

Covid-19: Fat, Obesity, Inflammation, Ethnicity, and Sex Differences

scientific article published on 26 October 2020

Depression subtyping based on evolutionary psychiatry: From reactive short-term mood change to depression

scientific article

Depression subtyping based on evolutionary psychiatry: Proximate mechanisms and ultimate functions

scientific article published on 16 October 2017

Dietary intake and major sources of plant lignans in Latvian men and women

scientific article published on 04 February 2013

Drought-induced positive feedback in xylophagous insects: Easier invasion of Scots pine leading to greater investment in immunity of emerging individuals

scientific article published in 2012

Eating Disorders: An Evolutionary Psychoneuroimmunological Approach

scientific article published on 29 October 2019

Ecological Stoichiometry: A Link Between Developmental Speed and Physiological Stress in an Omnivorous Insect

scientific article published on 08 March 2019

Effect of Juvenile Hormone on Resistance against Entomopathogenic Fungus Metarhizium robertsii Differs between Sexes

scientific article published on 19 November 2020

Effects of food quality on trade-offs among growth, immunity and survival in the greater wax moth Galleria mellonella

scientific article published on 22 July 2014

Egalitarian mixed-species bird groups enhance winter survival of subordinate group members but only in high-quality forests

scientific article published on 04 March 2020

England first, America second: The ecological predictors of life history and innovation

scientific article published on 20 November 2019

England first, America second: The ecological predictors of life history and innovation-ERRATUM

scientific article published on 19 December 2019

Evidence for the stress-linked immunocompetence handicap hypothesis in humans ⬇️

scientific article published on February 21, 2012

Facial attractiveness is related to women's cortisol and body fat, but not with immune responsiveness ⬇️

scientific article published on May 22, 2013

Fat is not just an energy store

scientific article published on 22 June 2018

Fattening strategies of wintering great tits support the optimal body mass hypothesis under conditions of extremely low ambient temperature

scientific article published on 10 August 2009

Fecundity selection does not vary along a large geographical cline of trait means in a passerine bird

Food quality affects the expression of antimicrobial peptide genes upon simulated parasite attack in the larvae of greater wax moth

article

Geographic patterns of genetic differentiation and plumage colour variation are different in the pied flycatcher (Ficedula hypoleuca)

scientific article published on 01 October 2009

Geographical trends in the yolk carotenoid composition of the pied flycatcher (Ficedula hypoleuca)

scientific article

Geographical variation in egg mass and egg content in a passerine bird

scientific article

Habitat quality affects stress responses and survival in a bird wintering under extremely low ambient temperatures.

scientific article

Heterophil/lymphocyte ratios predict the magnitude of humoral immune response to a novel antigen in great tits (Parus major).

scientific article published on 8 January 2012

High Blood Parasite Infection Rate and Low Fitness Suggest That Forest Water Bodies Comprise Ecological Traps for Pied Flycatchers

scientific article published in 2022

High Repeatability of Anti-Predator Responses and Resting Metabolic Rate in a Beetle

scientific article published in 2013

Inbreeding affects sexual signalling in males but not females of Tenebrio molitor ⬇️

scientific article published on January 11, 2012

Independent and interactive effects of immune activation and larval diet on adult immune function, growth and development in the greater wax moth (Galleria mellonella)

scientific article published on 25 July 2018

Interaction of climate change with effects of conspecific and heterospecific density on reproduction

scientific article

Interspecific reciprocity explains mobbing behaviour of the breeding chaffinches, Fringilla coelebs

scientific article published on 01 November 2002

Interspecific variation in the relationship between clutch size, laying date and intensity of urbanization in four species of hole-nesting birds.

scientific article

Is it interspecific information use or aggression between putative competitors that steers the selection of nest-site characteristics? A reply to Slagsvold and Wiebe

scientific article

Large-scale geographical variation in eggshell metal and calcium content in a passerine bird (Ficedula hypoleuca).

scientific article published in March 2014

Linking anti-predator behaviour and habitat quality: group effect in nest defence of a passerine bird

scientific article published in 2011

Linking organismal growth, coping styles, stress reactivity, and metabolism via responses against a selective serotonin reuptake inhibitor in an insect.

scientific article published on 5 June 2018

Long-lasting mobbing of the pied flycatcher increases the risk of nest predation

scientific article published in 2007

Manipulating mtDNA in vivo reprograms metabolism via novel response mechanisms

scientific article published on 04 October 2019

Metabolic rate associates with, but does not generate covariation between, behaviours in western stutter-trilling crickets, Gryllus integer.

scientific article published in March 2017

Microbiome symbionts and diet diversity incur costs on the immune system of insect larvae

scientific article

Mixed company: a framework for understanding the composition and organization of mixed-species animal groups

scientific article published on 25 February 2020

New behavioural trait adopted or rejected by observing heterospecific tutor fitness.

scientific article published on 10 November 2010

Nocturnal loss of body reserves reveals high survival risk for subordinate great tits wintering at extremely low ambient temperatures ⬇️

scientific article published on October 20, 2012

Observed fitness may affect niche overlap in competing species via selective social information use

scientific article published on 23 August 2013

Phenological sensitivity to climate change is higher in resident than in migrant bird populations among European cavity breeders

scientific article published on 6 April 2018

Predation promotes survival of beetles with lower resting metabolic rates

scientific article published in 2013

Predation selects for low resting metabolic rate and consistent individual differences in anti-predator behavior in a beetle

scientific article published in 2013

Previous encapsulation response enhances within individual protection against fungal parasite in the mealworm beetle Tenebrio molitor ⬇️

scientific article published on December 21, 2012

Response to Commentaries: Life History Evolution, Causal Mechanisms, and Female Sexual Orientation

scientific article published on 22 May 2019

Sex-specific compensatory growth in the larvae of the greater wax moth Galleria mellonella

scientific article

Short-term exposure to predation affects body elemental composition, climbing speed and survival ability in Drosophila melanogaster

scientific article

Stress, Behaviour and Immunity in Wild-Caught Wintering Great Tits (Parus major)

article

The costs of the immune memory within generations

scientific article published on 22 November 2019

The effect of climate change on avian offspring production: A global meta-analysis

scientific article published in May 2023

The excuse principle can maintain cooperation through forgivable defection in the Prisoner's Dilemma game

scientific article published on 17 July 2013

The increased risk of predation enhances cooperation.

scientific article

The risk of predation favors cooperation among breeding prey

scientific article published on May 2010

Variation in clutch size in relation to nest size in birds.

scientific article

Variation in eggshell traits between geographically distant populations of pied flycatchers Ficedula hypoleuca

Women's preferences for men's facial masculinity are strongest under favorable ecological conditions

scientific article published on 04 March 2019

Women's socioeconomic position in ontogeny is associated with improved immune function and lower stress, but not with height

scientific article published on 13 July 2020

You mob my owl, I'll mob yours: birds play tit-for-tat game.

scientific article

List of works by Indrikis Krams

A Life History Approach to the Female Sexual Orientation Spectrum: Evolution, Development, Causal Mechanisms, and Health

A dark cuticle allows higher investment in immunity, longevity and fecundity in a beetle upon a simulated parasite attack.

A head start for life history development? Family income mediates associations between height and immune response in men

Adiposity, compared with masculinity, serves as a more valid cue to immunocompetence in human mate choice ⬇️

Alarm calls of wintering great tits Parus major: warning of mate, reciprocal altruism or a message to the predator?

An Evolutionary Approach to Clinical Pharmacopsychology.

Attacks of songbirds in mixed‐species flocks by Eurasian Sparrowhawks: strategies of predators and potential prey

Body height, immunity, facial and vocal attractiveness in young men.

Clutch-size variation in Western Palaearctic secondary hole-nesting passerine birds in relation to nest box design

Correction to 'Adiposity, compared to masculinity, serves as a more valid cue to immunocompetence in human mate choice'.

Covid-19: Fat, Obesity, Inflammation, Ethnicity, and Sex Differences

Depression subtyping based on evolutionary psychiatry: From reactive short-term mood change to depression

Depression subtyping based on evolutionary psychiatry: Proximate mechanisms and ultimate functions

Dietary intake and major sources of plant lignans in Latvian men and women

Drought-induced positive feedback in xylophagous insects: Easier invasion of Scots pine leading to greater investment in immunity of emerging individuals

Eating Disorders: An Evolutionary Psychoneuroimmunological Approach

Ecological Stoichiometry: A Link Between Developmental Speed and Physiological Stress in an Omnivorous Insect

Effect of Juvenile Hormone on Resistance against Entomopathogenic Fungus Metarhizium robertsii Differs between Sexes

Effects of food quality on trade-offs among growth, immunity and survival in the greater wax moth Galleria mellonella

Egalitarian mixed-species bird groups enhance winter survival of subordinate group members but only in high-quality forests

England first, America second: The ecological predictors of life history and innovation

England first, America second: The ecological predictors of life history and innovation-ERRATUM

Evidence for the stress-linked immunocompetence handicap hypothesis in humans ⬇️

Facial attractiveness is related to women's cortisol and body fat, but not with immune responsiveness ⬇️

Fat is not just an energy store

Fattening strategies of wintering great tits support the optimal body mass hypothesis under conditions of extremely low ambient temperature

Fecundity selection does not vary along a large geographical cline of trait means in a passerine bird

Food quality affects the expression of antimicrobial peptide genes upon simulated parasite attack in the larvae of greater wax moth

Geographic patterns of genetic differentiation and plumage colour variation are different in the pied flycatcher (Ficedula hypoleuca)

Geographical trends in the yolk carotenoid composition of the pied flycatcher (Ficedula hypoleuca)

Geographical variation in egg mass and egg content in a passerine bird

Habitat quality affects stress responses and survival in a bird wintering under extremely low ambient temperatures.

Heterophil/lymphocyte ratios predict the magnitude of humoral immune response to a novel antigen in great tits (Parus major).

High Blood Parasite Infection Rate and Low Fitness Suggest That Forest Water Bodies Comprise Ecological Traps for Pied Flycatchers

High Repeatability of Anti-Predator Responses and Resting Metabolic Rate in a Beetle

Inbreeding affects sexual signalling in males but not females of Tenebrio molitor ⬇️

Independent and interactive effects of immune activation and larval diet on adult immune function, growth and development in the greater wax moth (Galleria mellonella)

Interaction of climate change with effects of conspecific and heterospecific density on reproduction

Interspecific reciprocity explains mobbing behaviour of the breeding chaffinches, Fringilla coelebs

Interspecific variation in the relationship between clutch size, laying date and intensity of urbanization in four species of hole-nesting birds.

Is it interspecific information use or aggression between putative competitors that steers the selection of nest-site characteristics? A reply to Slagsvold and Wiebe

Large-scale geographical variation in eggshell metal and calcium content in a passerine bird (Ficedula hypoleuca).

Linking anti-predator behaviour and habitat quality: group effect in nest defence of a passerine bird

Linking organismal growth, coping styles, stress reactivity, and metabolism via responses against a selective serotonin reuptake inhibitor in an insect.

Long-lasting mobbing of the pied flycatcher increases the risk of nest predation

Manipulating mtDNA in vivo reprograms metabolism via novel response mechanisms

Metabolic rate associates with, but does not generate covariation between, behaviours in western stutter-trilling crickets, Gryllus integer.

Microbiome symbionts and diet diversity incur costs on the immune system of insect larvae

Mixed company: a framework for understanding the composition and organization of mixed-species animal groups

New behavioural trait adopted or rejected by observing heterospecific tutor fitness.

Nocturnal loss of body reserves reveals high survival risk for subordinate great tits wintering at extremely low ambient temperatures ⬇️

Observed fitness may affect niche overlap in competing species via selective social information use

Phenological sensitivity to climate change is higher in resident than in migrant bird populations among European cavity breeders

Predation promotes survival of beetles with lower resting metabolic rates

Predation selects for low resting metabolic rate and consistent individual differences in anti-predator behavior in a beetle

Previous encapsulation response enhances within individual protection against fungal parasite in the mealworm beetle Tenebrio molitor ⬇️

Response to Commentaries: Life History Evolution, Causal Mechanisms, and Female Sexual Orientation

Sex-specific compensatory growth in the larvae of the greater wax moth Galleria mellonella

Short-term exposure to predation affects body elemental composition, climbing speed and survival ability in Drosophila melanogaster

Stress, Behaviour and Immunity in Wild-Caught Wintering Great Tits (Parus major)

The costs of the immune memory within generations

The effect of climate change on avian offspring production: A global meta-analysis

The excuse principle can maintain cooperation through forgivable defection in the Prisoner's Dilemma game

The increased risk of predation enhances cooperation.

The risk of predation favors cooperation among breeding prey

Variation in clutch size in relation to nest size in birds.

Variation in eggshell traits between geographically distant populations of pied flycatchers Ficedula hypoleuca

Women's preferences for men's facial masculinity are strongest under favorable ecological conditions

Women's socioeconomic position in ontogeny is associated with improved immune function and lower stress, but not with height

You mob my owl, I'll mob yours: birds play tit-for-tat game.