Evolutionary and ecological implications of sexual parasitism

Lehtonen, Jussi; Schmidt, Daniel J.; Heubel, Katja U.; Kokko, Hanna

doi:10.1016/j.tree.2012.12.006

Cited by 63 publications

(68 citation statements)

References 83 publications

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“…Occasional bouts of recombination make it possible to benefit from virtually all the advantages of regular recombination (Birky, 2010;. In the case of sexual parasitism in vertebrates (gynogenesis, hybridogenesis), although populations are mainly clonal (Avise, 2015), occasional introgression ('genetic leakage') occurs (Lehtonen et al, 2013).…”

Section: How Can Clones Survive Without Recombination?mentioning

confidence: 99%

Is Predominant Clonal Evolution a Common Evolutionary Adaptation to Parasitism in Pathogenic Parasitic Protozoa, Fungi, Bacteria, and Viruses?

Tibayrenc

Ayala

2017

Advances in Parasitology

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Section: How Can Clones Survive Without Recombination?mentioning

confidence: 99%

Is Predominant Clonal Evolution a Common Evolutionary Adaptation to Parasitism in Pathogenic Parasitic Protozoa, Fungi, Bacteria, and Viruses?

Tibayrenc

Ayala

2017

Advances in Parasitology

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“…Many examples of such constraints are known in multicellular animals [107]. For example, gamete activation may be required, where sperm (either from the same or a related species) is needed to trigger egg development even if there is no genetic contribution from sperm ('sexual parasitism' and gynogenesis in particular; reviewed in [108]); reduced offspring fitness via inbreeding depression can prevent the spread or maintenance of some forms of asexual reproduction which increase offspring homozygosity [107]; and in some species, only sexually produced eggs are resistant to harsh conditions, which may act as a lineagespecific mechanism to maintain facultative sex [107,109]. While such constraints are best known in multicellular anisogamous animals, many of the mechanisms could equally well apply to isogamous species.…”

Section: The Consequences Of the Transition From Isogamy To Anisogamymentioning

confidence: 99%

What do isogamous organisms teach us about sex and the two sexes?

Lehtonen

Kokko

Parker

2016

Phil. Trans. R. Soc. B

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One contribution of 15 to a theme issue 'Weird sex: the underappreciated diversity of sexual reproduction'. Isogamy is a reproductive system where all gametes are morphologically similar, especially in terms of size. Its importance goes beyond specific cases: to this day non-anisogamous systems are common outside of multicellular animals and plants, they can be found in all eukaryotic super-groups, and anisogamous organisms appear to have isogamous ancestors. Furthermore, because maleness is synonymous with the production of small gametes, an explanation for the initial origin of males and females is synonymous with understanding the transition from isogamy to anisogamy. As we show here, this transition may also be crucial for understanding why sex itself remains common even in taxa with high costs of male production (the twofold cost of sex). The transition to anisogamy implies the origin of male and female sexes, kickstarts the subsequent evolution of sex roles, and has a major impact on the costliness of sexual reproduction. Finally, we combine some of the consequences of isogamy and anisogamy in a thought experiment on the maintenance of sexual reproduction. We ask what happens if there is a less than twofold benefit to sex (not an unlikely scenario as large short-term benefits have proved difficult to find), and argue that this could lead to a situation where lineages that evolve anisogamy-and thus the highest costs of sex-end up being associated with constraints that make invasion by asexual reproduction unlikely (the 'anisogamy gateway' hypothesis).This article is part of the themed issue 'Weird sex: the underappreciated diversity of sexual reproduction'.

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“…This genus has been described as a "taxonomic trap" (Hammer et al 2013), owing to its numerous sexual species, many of which are only in the process of being delineated (Unmack et al unpublished data). The Hypseleotris of eastern Australia also include multiple, hybridogenetic lineages that practise sexual parasitism (Lehtonen et al 2013) and some of which comprise male-only and female-only populations (Schmidt et al 2011), and even retain evidence in their genes of a species not yet found in its pure sexual form (HX, sensu Bertozzi et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Accurate systematic frameworks are vital to advance ecological and evolutionary studies, with an example from Australian freshwater fish (Hypseleotris)

Page

Sternberg

Adams

et al. 2017

Mar. Freshwater Res.

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http://www.canberra.edu.au/researchrepository/items/ebf22f6e-877a-43ac-8a6a-71dc58442bf0/1/ Copyright: ©2016 Version:This is the authors' peer reviewed version of a work that was accepted for publication in the Marine and Freshwater Research, which has been published at https://doi.org/10.1071/MF16294. Changes resulting from the publishing process may not be reflected in this document. AbstractThe practice of modern evolutionary and ecological research is interdisciplinary, with the process of evolution underpinning the diversity on display. However, the inference of evolutionary patterns can be difficult owing to their historical nature. When the biological units and evolutionary relationships involved are unclear, interpreting any ecological and biological data can be problematic. We explore resulting issues when evolutionary theories rely on an unclear or incomplete biological framework using some Australian freshwater fishes (carp gudgeons: Hypseleotris) as an example. Specifically, recent theories regarding the role of developmental plasticity on ontogeny and speciation have focused on this group. However, carp gudgeons have complex, and as yet incompletely understood, species boundaries and reproductive biology. Even basic data for the recognised taxa, relating to their phylogenetic relationships, life-histories and species distributions, are unclear, have often been misinterpreted, and are still in the process of being assembled. These factors combined make carp gudgeons a relatively poor group on which to apply more advanced evolutionary theories at the moment, such as the role of developmental plasticity in diversification.

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Evolutionary and ecological implications of sexual parasitism

Cited by 63 publications

References 83 publications

Is Predominant Clonal Evolution a Common Evolutionary Adaptation to Parasitism in Pathogenic Parasitic Protozoa, Fungi, Bacteria, and Viruses?

Is Predominant Clonal Evolution a Common Evolutionary Adaptation to Parasitism in Pathogenic Parasitic Protozoa, Fungi, Bacteria, and Viruses?

What do isogamous organisms teach us about sex and the two sexes?

Accurate systematic frameworks are vital to advance ecological and evolutionary studies, with an example from Australian freshwater fish (Hypseleotris)

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