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Inbreeding and extinction in a butterfly metapopulation
TLDR
The effect of inbreeding on local extinction in a large metapopulation of the Glanville fritillary butterfly is studied and it is found that extinction risk increased significantly with decreasing heterozygosity, an indication of inmarriage. Expand
Phenology and causation of nest heating and thermoregulation in red wood ants of the Formica rufa group studied in cariferous forest habitats in southern Finland
TLDR
The observations indicate that in colonies with a worker complement exceeding 1 million, nest-warming after winter could start as an autocatalytic process and hence may not require triggering by sunning, and suggest that a capacity for social thermoregula tion is a cause of thermal stability in red wood ant nests. Expand
Experimental Confirmation That Inbreeding Depression Increases Extinction Risk in Butterfly Populations
TLDR
This poster presents a probabilistic procedure called a “shots fired” approach that combines a high-resolution 3D image of the genome and a simple 2D model to estimate the number of cells in a population. Expand
Diploid males and colony-level selection in Formica ants
TLDR
Models of the load hypothesis suggest that slow growth and high mortality of colonies with diploid males favour single mating by queens, and the longer the period of slow colony growth and the heavier the mortality, the stronger is the selection for monandry. Expand
Genetic patchwork of network-building wood ant populations.
TLDR
The results showed that the local populations of this highly polygynous and polydomous ant can be differentiated genetically within potential dispersal distances, suggesting restricted dispersal and possible bottlenecks when colonizing new patches of forest. Expand
Ortstreue in foraging ants of theFormica rufa group — Hierarchy of orienting cues and long-term memory
TLDR
Evidence is presented that extranidal Ortstreue is based on long-lasting individual memory of spatially organized visual cues, and that olfactory cues, probably identical with scent markings of the home range, are a cause of idiosyncratic OrtStreue during the dark period. Expand
Queen recruitment in a highly polygynous supercolony of formica-lugubris (Hymenoptera, Formicidae)
TLDR
Examination of behavioural relationships between young females (potential queens) and workers, in a multi-nest population (supercolony), of Formica lugubris finds substantial variation in worker response towards introduced female sexuals, ranging from execution to complete acceptance. Expand
Male size dimorphism and alternative reproductive tactics in Formica exsecta ants (Hymenoptera, Formicidae)
TLDR
It is suggested that macraners represent a mating tactic based on limited dispersal, including inbreeding, and that they may be most common during the early stage of the colony cycle preceding polygyny, while micraner represent an outbreeding strategy associated with a decline in resource availability. Expand
Inbreeding depression and the maintenance of genetic load in Melitaea cinxia metapopulations
TLDR
It is suggested that recurrent inbreeding has led topartial purging of deleterious recessives from the Finnish metapopulation, and substantial genetic load still remains in this metapoperative, and it is discussed possible reasons why this should be the case. Expand
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