Trojan Genes or Transparent Genomes? Sexual Selection and Potential Impacts of Genetically Modified Animals in Natural Ecosystems

Rollo, C. David; Kumar, Aarti; Smith, Richard; Aksenov, Vadim; Han, Jiawei; Khanna, Pardeep

doi:10.1007/s11692-013-9268-x

Cited by 3 publications

(2 citation statements)

References 245 publications

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“…Perhaps even aversion to environmental toxins (e.g. Surinov 2007, Rollo et al 2014 or poisonous foods (Bernays 1993) could be reinforced by necromones (or other cues) associated with ill, injured, or dead conspecifics.…”

Section: Discussionmentioning

confidence: 99%

Conspecific mortality cues mediate associative learning in crickets, Acheta domesticus (Orthoptera: Gryllidae)

Shephard¹,

Aksenov²,

Rollo³

2018

JOR

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Many terrestrial and aquatic animals learn associations between environmental features and chemical cues of mortality risk (e.g. conspecific alarm pheromones or predator-derived cues), but the chemical nature of the cues that mediate this type of learning are rarely considered. Fatty acid necromones (particularly oleic and linoleic acids) are well established as cues associated with dead or injured conspecifics. Necromones elicit risk aversive behavior across diverse arthropod phylogenies, yet they have not been linked to associative learning. Here, we provide evidence that necromones can mediate associative olfactory learning in an insect by acting as an aversive reinforcement. When house crickets (Acheta domesticus) were forced to inhabit an environment containing an initially attractive odor along with a necromone cue, they subsequently avoided the previously attractive odor and displayed tolerance for an initially unattractive odor. This occurred when crickets were conditioned with linoleic acid but not when they were conditioned with oleic acid. Similar aversive learning occurred when crickets were conditioned with ethanol body extracts composed of male and female corpses combined, as well as extracts composed of female corpses alone. Conditioning with male body extract did not elicit learned aversion in either sex, even though we detected no notable differences in fatty acid composition between male and female body extracts. We suggest that necromone-mediated learning responses might vary depending on synergistic or antagonistic interactions with sex or species-specific recognition cues.Citation: Shephard AM, Aksenov V, Rollo CD (2018) Conspecific mortality cues mediate associative learning in crickets, Acheta domesticus (Orthoptera: Gryllidae). Journal of Orthoptera Research 27(2): 187-192. https://doi.

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Section: Discussionmentioning

confidence: 99%

Conspecific mortality cues mediate associative learning in crickets, Acheta domesticus (Orthoptera: Gryllidae)

Shephard¹,

Aksenov²,

Rollo³

2018

JOR

Self Cite

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“…While it is widely regarded as a counterstrategy against infanticide, there are other possible explanations for this block or disruption of pregnancy. Bruce effects may have evolved as a mechanism of female choice (Schwagmeyer 1979); females that can prevent implantation and return to oestrus have, through such mechanisms, additional potential to select successful sires based on genetic fitness and thus ultimately maximise offspring fitness (Labov 1981a, Blumstein 2000, Rollo et al 2014). In their natural state, house mice are largely territorial.…”

Section: Introductionmentioning

confidence: 99%

How to escape male infanticide: mechanisms for avoiding or terminating pregnancy in mammals

et al. 2020

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The phenomenon whereby pregnancy may be inhibited or terminated when a female is exposed to non‐sire males after mating is often, and rather generally, referred to as the ‘Bruce effect’. Widespread and indiscriminate use of the term for any case of pregnancy failure following exposure to an unfamiliar male, however, masks distinct physiological and social causes of the blocking or termination of pregnancy. Within the available literature, we identify four basic processes by which mammalian females can terminate pregnancy, and thus minimise risks of wasted reproductive costs which might result from male infanticide by a subsequent consort of any progeny carried to full‐term where he was not the father. Physical contact with a non‐sire male may induce pregnancy failure either before implantation (pregnancy block) or after implantation (pregnancy disruption). By direct contrast, in other species, physical presence of a familiar non‐sire male may act to prevent the blocking or disruption of pregnancy, while separation from this non‐sire male may act to trigger termination. We propose that use of the term ‘Bruce effect’ should be restricted to situations in which pregnancy failure is induced primarily by physical contact and/or odour stimuli from a non‐sire male as in its initial formulation. Blanket use of this single term for all situations of pregnancy block or disruption, implying by default that pregnancy failure is the consequence of pre‐implantation pregnancy block of an inseminated female as a result of physical contact with an unfamiliar male or his olfactory cues, masks the fact that, in many circumstances or species, very different mechanisms may operate in the prevention or disruption of pregnancy. The implicit presumption that pregnancy failure is a single and uniform phenomenon also discourages further research into the range of rather different circumstances and mechanisms by which pregnancy disruption may be triggered.

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Trojan Genes and Transparent Genomes: Sexual Selection, Regulatory Evolution and the Real Hopeful Monsters

Rollo

2014

Evol Biol

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Trojan Genes or Transparent Genomes? Sexual Selection and Potential Impacts of Genetically Modified Animals in Natural Ecosystems

Cited by 3 publications

References 245 publications

Conspecific mortality cues mediate associative learning in crickets, Acheta domesticus (Orthoptera: Gryllidae)

Conspecific mortality cues mediate associative learning in crickets, Acheta domesticus (Orthoptera: Gryllidae)

How to escape male infanticide: mechanisms for avoiding or terminating pregnancy in mammals

Trojan Genes and Transparent Genomes: Sexual Selection, Regulatory Evolution and the Real Hopeful Monsters

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