Why fight? Socially dominant jackdaws, Corvus monedula, have low fitness

  title={Why fight? Socially dominant jackdaws, Corvus monedula, have low fitness},
  author={Simon Verhulst and H. Martijn Salomons},
  journal={Animal Behaviour},

Strong but variable associations between social dominance and clutch sex ratio in a colonial corvid

How spatial or temporal variation in effects of variables such as social dominance on sex allocation can contribute to the understanding of the evolution of sex allocation in species with complex life histories is discussed.


It is suggested that dominant males may be particularly good mates when resources are scarce, and this translates into benefits for females through male provisioning effort, and how this might vary with habitat suitability.

Social Dominance among Male Meadow Voles is Inversely Related to Reproductive Success

There is a reproductive disadvantage to having higher dominance rank among male meadow voles, and males with higher dominance ranks had larger home ranges, according to molecular paternity analysis.

Social Dominance Hierarchies and Phenotypic Correlates of Dominance in Captive Groups of the Grey-cheeked Fulvetta Alcippe morrisonia in Taiwan

This work studied whether captive group members of a subtropical species, grey-cheeked fulvetta Alcippe morrisonia, form social dominance hierarchies when competing for food during the non-breeding season and investigated whether sex, age, body condition and fat score were related to an individual's dominance rank.

Indirect genetics effects and evolutionary constraint: an analysis of social dominance in red deer, Cervus elaphus

Here, it is argued that the apparent conflict between quantitative genetic theory and common sense is resolved by recognition of indirect genetic effects (IGEs), and that IGEs likely provide a widespread but poorly recognized source of evolutionary constraint for traits influenced by competition.

Consequences of social dominance on crayfish resource use

The consequences of dominance for resource use in crayfish do not follow the current understanding of resource holding potential and feeding and mating was unaffected by social status in populations, a surprising result given current views on the role of dominance and aggression.

Male dominance linked to size and age, but not to 'good genes' in brown trout (Salmo trutta)

No evidence that females can improve their offspring's genetic viability by mating with large and dominant males is found, and neither dominance nor dominance indicators like body length, weight or age were significantly linked to genetic quality measured as embryo or juvenile survival.

Fighting behaviour as a correlate of male mating success in black grouse Tetrao tetrix

The results indicate that females may be using components of fighting behaviour as cues for mate choice in species where females prefer socially dominant males as mates or where dominants can prevent subordinates from mating.

Social life histories: jackdaw dominance increases with age, terminally declines and shortens lifespan

It is suggested that behaviour affecting the ability to secure resources is integral to the senescence process via resource effects on somatic state, where behaviour may include not only social dominance, but also learning, memory, perception and (sexual) signalling.



Reproductive constraints on aggressive competition in female baboons

It is reported here that high-ranking female baboons at Gombe National Park, Tanzania, enjoy shorter interbirth intervals, improved infant survival, and accelerated maturation of their daughters, but these advantages are countered by a significantly higher probability of miscarriage, and a proportion of high- ranking females suffer from reduced fertility.

Provisioning, parental investment and reproductive success in Jackdaws Corvus monedula

It is argued that provisioning costs might also constrain male Jackdaws to social monogamy by occupying time needed for the successful nurturing of two broods, and is a key component of annual reproductive output in this species.

Dominance Relationships in Jackdaws (Corvus Monedula)

Dominance interactions (supplantings) of 26 jackdaws (Corvus monedula) living in a captive flock were recorded for a period of 2 years. The transitivity of the dominance hierarchy did not increase

Social behaviour of the jackdaw Corvus monedula , in relation to its niche

The jackdaws prefer to feed where a subordinate bird is present, avoid feeding with a dominant and seek interactions with individuals with whom the outcome of the interaction is rather unpredictable, which shows that the population is able to sustain itself.

Strict monogamy in a semi‐colonial passerine: the Jackdaw Corvus monedula

DNA fingerprinting was used to provide an accurate measure of paternity in a nest-box colony of Jackdaws and revealed no cases of extra-pair fertilisation (EPF) or intra-specific brood parasitism, suggesting fledgling output or survival is likely to be a good measure of individual reproductive success in this species.

Food deprivation influences dominance status in dark-eyed juncos, Junco hyemalis

Social dominance in captive jackdaws (Corvus monedula)

  • S. Tamm
  • Biology
    Behavioural Processes
  • 1977

Effects of Experimental Manipulation of Testosterone Levels on Parental Investment and Breeding Success in Male House Sparrows

The results demonstrate that high levels of testosterone inhibit the expression of parental care in male House Sparrows and suggest that the typical pattern of testosterone levels in males represents an optimal compromise between allocation of effort to male-male competition vs. parental care.

Testosterone influences basal metabolic rate in male house sparrows: a new cost of dominance signalling?

It is demonstrated that testosterone simultaneously affects both signal development and basal metabolic rate in the house sparrow (Passer domesticus), supporting a novel conclusion: that testosterone–dependent signals act as honest indicators of male quality possibly because only high–quality individuals can sustain the energetic costs associated with signal development.