An advantage to mate choice in the seaweed fly, Coelopa frigida

  title={An advantage to mate choice in the seaweed fly, Coelopa frigida},
  author={Glenn Crocker and Thomas H. Day},
  journal={Behavioral Ecology and Sociobiology},
SummaryAll natural populations studied of the seaweed fly, Coelopa frigida, are polymorphic for the αβ inversion system on chromosome I. It has previously been shown that heterokaryotypes have superior egg-to-adult survival than either homokaryotype, and that there is non-random mating with respect to inversion genotypes. We have inquired whether the production of fitter progeny in larger numbers is the possible reason for the existence of non-random mating behaviour. We measured the fertility… 

Mating behavior in seaweed flies (Coelopa frigida)

The observed opportunities for female choice, male choice, and male-male competition are discussed in the light of previous reports of differential male mating success and of assortative mating with respect to size and genotypes.

Size variation, allometry and mating success in Aotearoa|New Zealand kelp flies (Coelopidae)

It is found that larger male C. littoralis which attempt to mate are significantly more likely to mate successfully demonstrating a large-size advantage in this species similar to findings across the Coelopidae, but only found a non-significant trend towards a mating advantage for males with longer mid-tibiae.

Influence of Male Age and Diet on Reproductive Potential of Orius laevigatus (Hemiptera: Anthocoridae)

The effect of age and diet of males on the reproductive capacity of the anthocorid predator Orius laevigatus (Fieber) (Hemiptera: Anthocoridae) was investigated, finding that mating is required to complete ovarian development.

Mate choice opportunity leads to shorter offspring development time in a desert insect

It is shown that greater mate choice among sexually mature adults leads to shorter offspring egg‐to‐adult development times; the extent of this reduction was influenced by population origin and by host plant environment.

Female mate preference and offspring fitness in the melon fly

  • E. Kasuya
  • Psychology, Biology
    Ecological Research
  • 2006
The influence of female mate preference on the fitness components of offspring was studied in the melon fly, Dacus cucurbitae, and 3-trait handicap models of the evolution offemale mate preference were considered.

How important are direct fitness benefits of sexual selection?

For several fitness components, direct benefits are only slightly more important than indirect ones arising from female choice, and it is shown that male sexual advertisements do not always reliably signal direct fitness benefits.

Egg cannibalism by sticklebacks: spite or selfishness?

Because there was no evidence of greater energetic or nutritional advantages from eating conspecific rather than heterospecific eggs, or older eggs rather than younger ones, threespine sticklebacks may be spiteful.

The new heterozygosity theory of mate choice and the MHC

The advantages of inbreeding avoidance are considered and the possibility that they may be more general than usually admitted is considered.

Genic Capture, Sex Linkage, and the Heritability of Fitness

It is shown that a species’ sex chromosome system can strongly influence the genetic architecture of male and female fitness variation and, consequently, the heritability of fitness between fathers and their offspring.

Salamander Mating Behaviors and Their Consequences for Individuals and Populations

This paper presents a meta-modelling framework for estimating the modeled response of the immune system to earthquake-triggered landsliding and describes its properties in detail.



Non-random mating in natural populations of the seaweed fly, Coelopa frigida

Testing for the randomness of mating in seaweed flies with respect to size, to genotypes at the alcohol dehydrogenase (Adh) locus, and to a chromosomal inversion with which the Adh locus is associated found that animals mated in a positively assortative fashion, but disassortatively withrespect to the AdH locus and the α/β inversion on chromosome I.

Differential mating success in populations of seaweed flies (Coelopa frigida)

It appears from previous work that large males are more successful in laboratory trials, yet under natural conditions genotypes associated with large male size have low mating success, and ways of reconciling these results and their relevance to understanding the inversion polymorphisms are discussed.

The effects of a chromosomal inversion on adult size and male mating success in the seaweed fly, Coelopa frigida

SummaryAn association is reported between the α/β inversion polymorphism on chromosome I and adult size as assessed by the length of wings, αα flies are larger than ββ flies, with heterokaryotypes

The maintenance of an inversion polymorphism in Coelopa frigida

A simulation has been used to study how these selective forces interact with one another, and with the changeable environment in which the flies live, and to examine the extent to which they can account for the observed karyotype frequencies.

The effect of larval density on an inversion polymorphism in the seaweed fly Coelopa frigida

The seaweed fly, Coelopa frigida, is polymorphic for two gene arrangements on chromosome I, and the egg to adult viability of heterokaryotypes is higher than either homokaryotype.

A chromosomal inversion polymorphism in Scandinavian populations of the seaweed fly, Coelopa frigida.

It is suggested that heterokaryotypic advantage is the major selective force maintaining this polymorphism, and that genotype-related differences in generation times, and the longevity of seaweed beds, may constitute lesser forces acting on the inversion frequencies.

Alcohol dehydrogenase polymorphism in the seaweed fly, Coelopa frigida

There is no evidence that it was selective with respect to the Adh genotypes, and significant differences in both specific activities and thermal stabilities were found between ADH allozymes.

Mutual Facilitation and the Fitness of Polymorphic Populations

The results show that the greater fitness of polymorphic Drosophila populations compared with monomorphic is in part determined by mutual facilitation and the relevance of these results to genetic diversity within populations and selection between populations is discussed.

Genetics and evolution of female choice

The demonstration of a simple genetic basis to female mating preferences in A. bipunctata implies that sexual selection by female choice is not only important in the evolution of male sexual adornments in sexually dimorphic species, but may also maintain polymorphisms that are not sex-limited.

Associations of enzymic and chromosomal polymorphisms in the seaweed fly, Coelopa frigida

Non-random associations between the Adh and Es-2 loci and inversions on chromosome I are reported and the hypothesis that they constitute part of a coadapted gene complex whose members code for functionally related enzymes is discussed.