24 Works

Data from: Oxidative stress and the evolution of sex differences in lifespan and ageing in the decorated cricket, Gryllodes sigillatus

Catharine Ruth Archer, Scott K. Sakaluk, Colin Selman, Nick Royle & John Hunt
The Free Radical Theory of Ageing (FRTA) predicts that oxidative stress, induced when levels of reactive oxygen species exceed the capacity of antioxidant defences, causes ageing. Recently, it has also been argued that oxidative damage may mediate important life-history trade-offs. Here, we use inbred lines of the decorated cricket, Gryllodes sigillatus, to estimate the genetic (co)variance between age-dependent reproductive effort, lifespan, ageing, oxidative damage and total antioxidant capacity within and between the sexes. The FRTA...

Data from: Food fight: sexual conflict over free amino acids in the nuptial gifts of male decorated crickets

Susan N. Gershman, John Hunt, Scott K. Sakaluk, J. Hunt & S. K. Sakaluk
In decorated crickets, Gryllodes sigillatus, the spermatophore that a male transfers at mating includes a gelatinous spermatophylax that the female consumes, delaying her removal of the sperm-filled ampulla. Male fertilization success increases with the length of time females spend feeding on the spermatophylax, while females may benefit by prematurely discarding the spermatophylaxes of undesirable males. This sexual conflict should favour males that produce increasingly appealing spermatophylaxes, and females that resist this manipulation. To determine the...

Data from: Cannibalism as an interacting phenotype: pre-cannibalistic aggression is influenced by social partners in the endangered Socorro isopod (Thermosphaeroma thermophilum)

Bronwyn H. Bleakley, Stephanie M. Welter, Karlline McCauley-Cole, Stephen M. Shuster, Allen J. Moore, K. McCauley-Cole, S. M. Shuster & S. M. Welter
Models for the evolution of cannibalism highlight the importance of asymmetries between individuals in initiating cannibalistic attacks. Studies may include measures of body size but typically group individuals into size/age classes or compare populations. Such broad comparisons may obscure the details of interactions that ultimately determine how socially contingent characteristics evolve. We propose that understanding cannibalism is facilitated by using an interacting phenotypes perspective that includes the influences of the phenotype of a social partner...

Data from: Pairing context determines condition-dependence of song rate in a monogamous passerine bird

Morgan David, Yannick Auclair, Sasha R. X. Dall, Frank Cézilly, Morgan David, Yannick Auclair, Sasha R. X. Dall, Frank Cézilly, S. R. X. Dall & M. David
Condition-dependence of male ornaments is thought to provide honest signals on which females can base their sexual choice for genetic quality. Recent studies show that condition-dependence patterns can vary within populations. Although long-term association is thought to promote honest signalling, no study has explored the influence of pairing context on the condition-dependence of male ornaments. In this study, we assessed the influence of natural variation in body condition on song rate in zebra finches (Taeniopygia...

Data from: Building genetic networks using relatedness information: a novel approach for the estimation of dispersal and characterization of group structure in social animals

Lee Ann Rollins, Lucy E. Browning, Clare E. Holleley, James L. Savage, Andrew F. Russell & Simon C. Griffith
Natal dispersal is an important life history trait driving variation in individual fitness and, therefore, a proper understanding of the factors underlying dispersal behaviour is critical to many fields including population dynamics, behavioural ecology and conservation biology. However, individual dispersal patterns remain difficult to quantify despite many years of research using direct and indirect methods. Here, we quantify dispersal in a single intensively-studied population of the cooperatively breeding chestnut-crowned babbler (Pomatostomus ruficeps) using genetic networks...

Data from: Kin selection, not group augmentation, predicts helping in an obligate cooperatively breeding bird

Lucy E. Browning, Samantha C. Patrick, Lee A. Rollins, Simon C. Griffith, Andrew F. Russell, S. C. Patrick, S. C. Griffith, L. A. Rollins & A. F. Russell
Kin selection theory has been the central model for understanding the evolution of cooperative breeding, where non-breeders help bear the cost of rearing young. Recently the dominance of this idea has been questioned; particularly in obligate cooperative breeders where breeding without help is uncommon and seldom successful. In such systems, the direct benefits gained through augmenting current group size have been hypothesised to provide a tractable alternative (or addition) to kin selection. However, clear empirical...

Data from: Heritability of male attractiveness persists despite evidence for unreliable sexual signals in Drosophila simulans

Fiona C. Ingleby, John Hunt, David J. Hosken, F. C. Ingleby, J. Hunt & D. J. Hosken
Sexual signals can be used to attract mates, but to be honest indicators of signaller quality they need to convey information reliably. However, environmental variation and genotype-by-environment (G x E) interactions have the potential to compromise the reliability of sexual signals. Here we test the reliability of cuticular hydrocarbons (CHCs) as signals of heritable aspects of male attractiveness in Drosophila simulans. We examined the heritability of male attractiveness and a measure of the difference between...

Data from: Diverse reproductive barriers in hybridising crickets suggests extensive variation in the evolution and maintenance of isolation

Thor Veen, Joseph Faulks, Frances Tyler, Jodie Lloyd & Tom Tregenza
Reproductive barriers reduce gene flow between populations and maintain species identities. A diversity of barriers exist, acting before, during and after mating. To understand speciation and coexistence, these barriers need to be quantified and their potential interactions revealed. We use the hybridising field crickets Gryllus bimaculatus and G. campestris as a model to understand the full compliment and relative strength of reproductive barriers. We find that males of both species prefer conspecific females, but the...

Data from: Sexual selection affects the evolution of lifespan and ageing in the decorated cricket Gryllodes sigillatus

Catharine Ruth Archer, Nick J. Royle, Scott K. Sakaluk, Felix Zajitschek & John Hunt
Recent work suggests that sexual selection can influence the evolution of ageing and lifespan by shaping the optimal timing and relative costliness of reproductive effort in the sexes. We use inbred lines of the decorated cricket, Gryllodes sigillatus, to estimate the genetic (co)variance between age-dependent reproductive effort, lifespan and ageing within and between the sexes. Sexual selection theory predicts that males should die sooner and age more rapidly than females. However, a reversal of this...

Data from: Spite versus cheats: competition among social strategies shapes virulence in Pseudomonas aeruginosa

R. Fredrik Inglis, Sam Paul Brown & Angus Buckling
Social interactions have been shown to play an important role in bacterial evolution and virulence. The majority of empirical studies conducted have only considered social traits in isolation, yet numerous social traits, such as the production of spiteful bacteriocins (anti-competitor toxins) and iron-scavenging siderophores (a public good) by the opportunistic pathogen Pseudomonas aeruginosa, are frequently expressed simultaneously. Crucially, both bacteriocin production and siderophore cheating can be favoured under the same competitive conditions, and we develop...

Data from: The consequences of genetic variation in male sex peptide gene-expression levels for SP retention and egg laying in female Drosophila

Damian T. Smith, Laura K. Sirot, Mariana F. Wolfner, David J. Hosken, L K Sirot, M F Wolfner, D T Smith, D J Hosken & N Wedell
The accessory gland proteins (Acps) that male Drosophila melanogaster produce and transfer to females during copulation are key to male and female fitness. One Acp, the sex peptide (SP), is largely responsible for a dramatic increase in female egg laying and decrease in female receptivity after copulation. While genetic variation in male SP expression levels correlate with refractory period duration in females, it is unknown whether male SP expression influences female egg laying or if...

Data from: Sequential mate choice and sexual isolation in threespine stickleback species

Genevieve M. Kozak, Megan L. Head, Alycia C. R. Lackey, Janette W. Boughman, M. L. Head, G. M. Kozak, A. C. R. Lackey & J. W. Boughman
Sequential mate choice strategies predict how females should alter their choosiness based on the availability of attractive males. While there are many studies on sequential mate choice within species, few have asked if females apply these strategies to interactions between species and how these strategies may affect hybridization. We tested how previous interactions with conspecific and heterospecific males affect mate preference and sexual isolation in two threespine stickleback species (benthics and limnetics: Gasterosteus spp.). Consistent...

Data from: Genotype-by-environment interactions for cuticular hydrocarbon expression in Drosophila simulans

Fiona C. Ingleby, David J. Hosken, Kristy Flowers, Michael F. Hawkes, Sarah M. Lane, James Rapkin, Ian Dworkin, John Hunt, F. C. Ingleby, D. J. Hosken, K. Flowers, M. F. Hawkes, S. M. Lane, J. Rapkin, J. Hunt & I. Dworkin
Genotype-by-environment interactions (G x Es) describe genetic variation for phenotypic plasticity. Recent interest in the role of these interactions in sexual selection has identified G x Es across a diverse range of species and sexual traits. Additionally, theoretical work predicts that G x Es in sexual traits could help to maintain genetic variation, but could also disrupt the reliability of these traits as signals of mate quality. However, empirical tests of these theoretical predictions are...

Data from: Interactive effects of inbreeding and endocrine disruption on reproduction in a model laboratory fish

Lisa K. Bickley, Andrew R. Brown, David J. Hosken, Patrick B. Hamilton, Gareth Le Page, Gregory C. Paull, Stewart F. Owen & Charles R. Tyler
Inbreeding depression is expected to be more severe in stressful environments. However, the extent to which inbreeding affects the vulnerability of populations to environmental stressors, such as chemical exposure, remains unresolved. Here we report on the combined impacts of inbreeding and exposure to an endocrine disrupting chemical (the fungicide, clotrimazole) on zebrafish (Danio rerio). We show that whilst inbreeding can negatively affect reproductive traits, not all traits are affected equally. Inbreeding depression frequently only became...

Data from: Distinguishing social from nonsocial navigation in moving animal groups

Nikolai W. F. Bode, Daniel W. Franks, A. Jamie Wood, Julius J. B. Piercy, Darren P. Croft & Edward A. Codling
Many animals, such as migrating shoals of fish, navigate in groups. Knowing the mechanisms involved in animal navigation is important when it comes to explaining navigation accuracy, dispersal patterns, population and evolutionary dynamics and consequently the design of conservation strategies. When navigating towards a common target, animals could interact socially by sharing available information directly or indirectly, or each individual could navigate by itself and aggregations may not disperse because all animals are moving towards...

Data from: Reconstruction of paternal genotypes over multiple breeding seasons reveals male green turtles do not breed annually

Lucy I. Wright, Wayne J. Fuller, Brendan J. Godley, Andrew McGowan, Tom Tregenza & Annette C. Broderick
For species of conservation concern, knowledge of key life-history and demographic components, such as the number and sex ratio of breeding adults, is essential for accurate assessments of population viability. Species with temperature-dependent sex determination can produce heavily biased primary sex ratios, and there is concern that adult sex ratios may be similarly skewed or will become so as a result of climate warming. Prediction and mitigation of such impacts are difficult when life-history information...

Data from: The genetics of primary and secondary sexual character trade-offs in a horned beetle

Clarissa M. House & Leigh W. Simmons
When structures compete for shared resources, this may lead to acquisition and allocation trade-offs so that the enlargement of one structure occurs at the expense of another. Among the studies of morphological trade-offs, their importance has been demonstrated primarily through experimental manipulations and comparative analyses. Relatively, a few studies have investigated the underlying genetic basis of phenotypic patterns. Here, we use a half-sibling breeding design to determine the genetic underpinnings of the phenotypic trade-off between...

Data from: The origins of Atlantic salmon (Salmo salar L.) re-colonizing the River Mersey in northwest England

Charles I. Ikediashi, Sam Billington, Jamie R. Stevens & Charles Ikediashi
By the 1950s, pollution had extirpated Atlantic salmon in the river Mersey in northwest England. During the 1970s, an extensive restoration program began and in 2001, an adult salmon was caught ascending the river. Subsequently, a fish trap was installed and additional adults are now routinely sampled. In this study, we have genotyped 138 adults and one juvenile salmon at 14 microsatellite loci from across this time period (2001–2011). We have used assignment analysis with...

Data from: Multiple post-mating barriers to hybridisation in field crickets

Frances Tyler, Xavier A. Harrison, Amanda Bretman, Thor Veen, Rolando Rodríguez-Muñoz & Tom Tregenza
Mechanisms that prevent different species from interbreeding are fundamental to the maintenance of biodiversity. Barriers to interspecific matings, such as failure to recognize a potential mate, are often relatively easy to identify. Those occurring after mating, such as differences in the how successful sperm are in competition for fertilisations, are cryptic and have the potential to create selection on females to mate multiply as a defence against maladaptive hybridization. Cryptic advantages to conspecific sperm may...

Data from: Offspring social network structure predicts fitness in families

Nick J. Royle, Thomas W. Pike, Phillip Heeb, Heinz Richner, Mathias Kölliker, P. Heeb, T. W. Pike, N. J. Royle, M. Kolliker & H. Richner
Social structures such as families emerge as outcomes of behavioural interactions among individuals, and can evolve over time if families with particular types of social structures tend to leave more individuals in subsequent generations. The social behaviour of interacting individuals is typically analysed as a series of multiple dyadic (pair-wise) interactions, rather than a network of interactions among multiple individuals. However, in species where parents feed dependent young, interactions within families nearly always involve more...

Data from: Sexual selection and experimental evolution of chemical signals in Drosophila pseudoobscura

John Hunt, Rhonda R. Snook, Christopher Mitchell, Helen S. Crudgington, Allen J. Moore, J. Hunt, C. Mitchell, R. R. Snook & H. S. Crudgington
Our expectations for the evolution of chemical signals in response to sexual selection are uncertain. How are chemical signals elaborated? Does sexual selection result in complexity of the composition or in altered quantities of expression? We addressed this in Drosophila pseudoobscura by examining male and female cuticular hydrocarbons (CHs) after 82 generations of elevated (E) sexual selection or relaxed sexual selection through monogamy (M). The CH profile consisted of 18 different components. We extracted three...

Data from: Fine-scale spatiotemporal patterns of genetic variation reflect budding dispersal coupled with strong natal philopatry in a cooperatively breeding mammal

Hazel J. Nichols, Neil R. Jordan, Gabriel A. Jamie, Michael A. Cant & Joseph I. Hoffman
The relatedness structure of animal populations is thought to be a critically important factor underlying the evolution of mating systems and social behaviours. While previous work has shown that population structure is shaped by many biological processes, few studies have investigated how these factors vary over time. Consequently, we explored the fine-scale spatiotemporal genetic structure of an intensively studied population of cooperatively breeding banded mongooses (Mungos mungo) over a ten-year period. Overall population structure was...

Data from: Sex-specific genotype-by-environment interactions for cuticular hydrocarbon expression in decorated crickets, Gryllodes sigillatus: implications for the evolution of signal reliability

Carie B. Weddle, Christopher Mitchell, Sean K. Bay, Scott K. Sakaluk, John Hunt, C. Mitchell, S. K. Bay, J. Hunt, C. B. Weddle & S. K. Sakaluk
Phenotypic traits that convey information about individual identity or quality are important in animal social interactions, and the degree to which such traits are influenced by environmental variation can have profound effects on the reliability of these cues. Using inbred genetic lines of the decorated cricket, Gryllodes sigillatus, we manipulated diet quality to test how the cuticular hydrocarbon (CHC) profiles of males and females respond across two different nutritional rearing environments. There were significant differences...

Data from: Paternal care: direct and indirect genetic effects of fathers on offspring performance

Megan L. Head, Lisa K. Berry, Nick J. Royle & Allen J. Moore
Knowledge of how genetic effects arising from parental care influence the evolution of offspring traits comes almost exclusively from studies of maternal care. However, males provide care in some taxa, and often this care differs from females in quality or quantity. If variation in paternal care is genetically based then, like maternal care and maternal effects, paternal effects may have important consequences for the evolution of offspring traits via indirect genetic effects (IGEs). IGEs and...

Registration Year

  • 2012

Resource Types

  • Dataset


  • University of Exeter
  • University of Cambridge
  • Illinois State University
  • Macquarie University
  • French National Centre for Scientific Research
  • University of British Columbia
  • Michigan State University
  • Princeton University
  • European University of Lefke
  • Kansas Wesleyan University