1
|
Castro-Vargas C, Oakeshott JG, Yeap HL, Lacey MJ, Lee SF, Park SJ, Taylor PW, Pandey G. Differential pheromone profile as a contributor to premating isolation between two sympatric sibling fruit fly species. JOURNAL OF INSECT SCIENCE (ONLINE) 2024; 24:26. [PMID: 38913610 PMCID: PMC11195474 DOI: 10.1093/jisesa/ieae066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 05/12/2024] [Accepted: 06/19/2024] [Indexed: 06/26/2024]
Abstract
Bactrocera tryoni (Froggatt) and Bactrocera neohumeralis (Hardy) are sibling fruit fly species that are sympatric over much of their ranges. Premating isolation of these close relatives is thought to be maintained in part by allochrony-mating activity in B. tryoni peaks at dusk, whereas in B. neohumeralis, it peaks earlier in the day. To ascertain whether differences in pheromone composition may also contribute to premating isolation between them, this study used solid-phase microextraction and gas chromatography-mass spectrometry to characterize the rectal gland volatiles of a recently collected and a more domesticated strain of each species. These glands are typical production sites and reservoirs of pheromones in bactrocerans. A total of 120 peaks were detected and 50 were identified. Differences were found in the composition of the rectal gland emissions between the sexes, species, and recently collected versus domesticated strains of each species. The compositional variation included several presence/absence and many quantitative differences. Species and strain differences in males included several relatively small alcohols, esters, and aliphatic amides. Species and strain differences in females also included some of the amides but additionally involved many fatty acid esters and 3 spiroacetals. While the strain differences indicate there is also heritable variation in rectal gland emissions within each species, the species differences imply that compositional differences in pheromones emitted from rectal glands could contribute to the premating isolation between B. tryoni and B. neohumeralis. The changes during domestication could also have significant implications for the efficacy of Sterile Insect Technique control programs.
Collapse
Affiliation(s)
- Cynthia Castro-Vargas
- Environment, Commonwealth Scientific and Industrial Research Organisation, Acton, ACT, Australia
- Applied BioSciences, Macquarie University, North Ryde, NSW, Australia
| | - John Graham Oakeshott
- Environment, Commonwealth Scientific and Industrial Research Organisation, Acton, ACT, Australia
- Applied BioSciences, Macquarie University, North Ryde, NSW, Australia
| | - Heng Lin Yeap
- Environment, Commonwealth Scientific and Industrial Research Organisation, Acton, ACT, Australia
- Health and Biosecurity, Commonwealth Scientific and Industrial Research Organisation, Parkville, VIC, Australia
- Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC, Australia
| | - Michael J Lacey
- National Collections and Marine Infrastructure, Commonwealth Scientific and Industrial Research Organisation, Acton, ACT, Australia
| | - Siu Fai Lee
- Environment, Commonwealth Scientific and Industrial Research Organisation, Acton, ACT, Australia
- Applied BioSciences, Macquarie University, North Ryde, NSW, Australia
| | - Soo Jean Park
- Applied BioSciences, Macquarie University, North Ryde, NSW, Australia
- Australian Research Council Centre for Fruit Fly Biosecurity Innovation, Macquarie University, North Ryde, NSW, Australia
| | - Phillip Warren Taylor
- Applied BioSciences, Macquarie University, North Ryde, NSW, Australia
- Australian Research Council Centre for Fruit Fly Biosecurity Innovation, Macquarie University, North Ryde, NSW, Australia
| | - Gunjan Pandey
- Environment, Commonwealth Scientific and Industrial Research Organisation, Acton, ACT, Australia
- Applied BioSciences, Macquarie University, North Ryde, NSW, Australia
| |
Collapse
|
2
|
Peccoud J, Pleydell DRJ, Sauvion N. A framework for estimating the effects of sequential reproductive barriers: Implementation using Bayesian models with field data from cryptic species. Evolution 2018; 72:2503-2512. [PMID: 30194777 DOI: 10.1111/evo.13595] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Accepted: 08/27/2018] [Indexed: 01/08/2023]
Abstract
Determining how reproductive barriers modulate gene flow between populations represents a major step toward understanding the factors shaping the course of speciation. Although many indices quantifying reproductive isolation (RI) have been proposed, they do not permit the quantification of cross-direction-specific RI under varying species frequencies and over arbitrary sequences of barriers. Furthermore, techniques quantifying associated uncertainties are lacking, and statistical methods unrelated to biological process are still preferred for obtaining confidence intervals and P-values. To address these shortcomings, we provide new RI indices that model changes in gene flow for both directions of hybridization, and we implement them in a Bayesian model. We use this model to quantify RI between two species of the psyllid Cacopsylla pruni based on field genotypic data for mating individuals, inseminated spermatophores and progeny. The results showed that preinsemination isolation was strong, mildly asymmetric, and indistinguishably different between study sites despite large differences in species frequencies; that postinsemination isolation strongly affected the more common hybrid type; and that cumulative isolation was close to complete. In the light of these results, we discuss how these developments can strengthen comparative RI studies.
Collapse
Affiliation(s)
- Jean Peccoud
- BGPI, Univ Montpellier, INRA, CIRAD, Montpellier SupAgro, Montpellier, France.,Current Address: Laboratoire Écologie et Biologie des Interactions, UMR 7267 CNRS, Université de Poitiers, 86000 Poitiers, France
| | - David R J Pleydell
- BGPI, Univ Montpellier, INRA, CIRAD, Montpellier SupAgro, Montpellier, France.,Current Address: UMR Animal, Santé, Territoires, Risques et Écosystèmes, INRA, CIRAD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | - Nicolas Sauvion
- BGPI, Univ Montpellier, INRA, CIRAD, Montpellier SupAgro, Montpellier, France
| |
Collapse
|
3
|
Lipshutz SE. Interspecific competition, hybridization, and reproductive isolation in secondary contact: missing perspectives on males and females. Curr Zool 2018; 64:75-88. [PMID: 29492041 PMCID: PMC5809030 DOI: 10.1093/cz/zox060] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 10/15/2017] [Indexed: 12/26/2022] Open
Abstract
Research on sexual selection and hybridization has focused on female mate choice and male-male competition. While the evolutionary outcomes of interspecific female preference have been well explored, we are now gaining a better understanding of the processes by which male-male competition between species in secondary contact promotes reproductive isolation versus hybridization. What is relatively unexplored is the interaction between female choice and male competition, as they can oppose one another or align with similar outcomes for reproductive isolation. The role of female-female competition in hybridization is also not well understood, but could operate similarly to male-male competition in polyandrous and other systems where costs to heterospecific mating are low for females. Reproductive competition between either sex of sympatric species can cause the divergence and/or convergence of sexual signals and recognition, which in turn influences the likelihood for interspecific mating. Future work on species interactions in secondary contact should test the relative influences of both mate choice and competition for mates on hybridization outcomes, and should not ignore the possibilities that females can compete over mating resources, and males can exercise mate choice.
Collapse
Affiliation(s)
- Sara E Lipshutz
- Department of Ecology and Evolutionary Biology, Division of Biology, University of Tennessee, Knoxville, Tennessee 37996, USA
| |
Collapse
|
4
|
Carranza J, Roldán M, Duarte JMB. Lack of mate selectivity for genetic compatibility within the red brocket deer Mazama americana complex. Mamm Biol 2018. [DOI: 10.1016/j.mambio.2017.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
5
|
Rohde K, Hau Y, Weyer J, Hochkirch A. Wide prevalence of hybridization in two sympatric grasshopper species may be shaped by their relative abundances. BMC Evol Biol 2015; 15:191. [PMID: 26376739 PMCID: PMC4573947 DOI: 10.1186/s12862-015-0460-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 08/19/2015] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Hybridization between species is of conservation concern as it might threaten the genetic integrity of species. Anthropogenic factors can alter hybridization dynamics by introducing new potentially hybridizing species or by diminishing barriers to hybridization. This may even affect sympatric species pairs through environmental change, which so far has received little attention. We studied hybridization prevalence and the underlying behavioral mechanisms in two sympatric grasshopper species, a rare specialist (Chorthippus montanus) and a common generalist (Chorthippus parallelus). We conducted a mate choice experiment with constant intraspecific density and varying heterospecific density, i.e. varying relative frequency of both species. RESULTS Mate choice was frequency-dependent in both species with a higher risk of cross-mating with increasing heterospecific frequency, while conspecific mating increased linearly with increasing conspecific density. This illustrates that reproductive barriers could be altered by environmental change, if the relative frequency of species pairs is affected. Moreover, we performed a microsatellite analysis to detect hybridization in twelve syntopic populations (and four allotopic populations). Hybrids were detected in nearly all syntopic populations with hybridization rates reaching up to 8.9 %. Genetic diversity increased for both species when hybrids were included in the data set, but only in the common species a positive correlation between hybridization rate and genetic diversity was detected. CONCLUSION Our study illustrates that the relative frequency of the two species strongly determines the effectiveness of reproductive barriers and that even the more choosy species (Ch. montanus) may face a higher risk of hybridization if population size decreases and its relative frequency becomes low compared to its sister species. The asymmetric mate preferences of both species may lead to quasi-unidirectional gene flow caused by unidirectional backcrossing. This might explain why genetic diversity increased only in the common species, but not in the rare one. Altogether, the hybridization rate was much higher than expected for a widely sympatric species pair.
Collapse
Affiliation(s)
- Katja Rohde
- Department of Biogeography, Trier University, D-54286, Trier, Germany.
| | - Yvonne Hau
- Department of Biogeography, Trier University, D-54286, Trier, Germany.
| | - Jessica Weyer
- Department of Biogeography, Trier University, D-54286, Trier, Germany.
| | - Axel Hochkirch
- Department of Biogeography, Trier University, D-54286, Trier, Germany.
| |
Collapse
|
6
|
Tyler F, Fisher D, d'Ettorre P, RodrÃguez-Muñoz R, Tregenza T. Chemical cues mediate species recognition in field crickets. Front Ecol Evol 2015. [DOI: 10.3389/fevo.2015.00048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
7
|
González M, Peretti AV, Costa FG. Reproductive isolation between two populations ofAglaoctenus lagotis, a funnel-web wolf spider. Biol J Linn Soc Lond 2015. [DOI: 10.1111/bij.12448] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Macarena González
- Laboratorio de Biología Reproductiva; y Evolución Cátedra de Diversidad Animal I; Facultad de Ciencias Exactas; Físicas y Naturales; Universidad Nacional de Córdoba; Vélez Sarsfield 299 CP: 5000 Córdoba Capital Argentina
- Instituto de Diversidad y Ecología Animal (IDEA); CONICET - Universidad Nacional de Córdoba; Córdoba Argentina
- Laboratorio de Etología, Ecología y Evolución; Instituto de Investigaciones Biológicas; Clemente Estable Montevideo Uruguay
| | - Alfredo V. Peretti
- Laboratorio de Biología Reproductiva; y Evolución Cátedra de Diversidad Animal I; Facultad de Ciencias Exactas; Físicas y Naturales; Universidad Nacional de Córdoba; Vélez Sarsfield 299 CP: 5000 Córdoba Capital Argentina
- Instituto de Diversidad y Ecología Animal (IDEA); CONICET - Universidad Nacional de Córdoba; Córdoba Argentina
| | - Fernando G. Costa
- Laboratorio de Etología, Ecología y Evolución; Instituto de Investigaciones Biológicas; Clemente Estable Montevideo Uruguay
| |
Collapse
|
8
|
Tyler F, Rodríguez-Muñoz R, Tregenza T. Fertilisation and early developmental barriers to hybridisation in field crickets. BMC Evol Biol 2013; 13:43. [PMID: 23410054 PMCID: PMC3610257 DOI: 10.1186/1471-2148-13-43] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 02/11/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Post-mating interactions between the reproductive traits and gametes of mating individuals and among their genes within zygotes are invariably complex, providing multiple opportunities for reproduction to go awry. These interactions have the potential to act as barriers to gene flow between species, and may be important in the process of speciation. There are multiple post-mating barriers to interbreeding between the hybridising field crickets Gryllus bimaculatus and G. campestris. Female G. bimaculatus preferentially store sperm from conspecific males when mated to both conspecific and heterospecific partners. Additionally, conspecific males sire an even greater proportion of offspring than would be predicted from their sperm's representation in the spermatheca. The nature of these post-sperm-storage barriers to hybridisation are unknown. We use a fluorescent staining technique to determine whether barriers occur prior to, or during embryo development. RESULTS We show that eggs laid by G. bimaculatus females mated to G. campestris males are less likely to begin embryogenesis than eggs from conspecific mating pairs. Of the eggs that are successfully fertilised and start to develop, those from heterospecific mating pairs are more likely to arrest early, prior to blastoderm formation. We find evidence for bimodal variation among egg clutches in the number of developing embryos that subsequently arrest, indicating that there is genetic variation for incompatibility between mating individuals. In contrast to the pattern of early embryonic mortality, those hybrids reaching advanced stages of embryogenesis have survival rates equal to that of embryos from conspecific mating pairs. CONCLUSIONS Post-sperm-storage barriers to hybridisation show evidence of genetic polymorphism. They are sufficiently large, that if the species interbreed where they are sympatric, these barriers could play a role in the maintenance of reproductive isolation between them. The number of eggs that fail to develop represents a substantial cost of hybridization to G. bimaculatus females, and this cost could reinforce the evolution of barriers occurring earlier in the reproductive process.
Collapse
Affiliation(s)
- Frances Tyler
- Centre for Ecology and Conservation, College of Life and Environmental Sciences, University of Exeter, Cornwall Campus, Penryn, Cornwall, UK
| | | | | |
Collapse
|
9
|
Tyler F, Harrison XA, Bretman A, Veen T, Rodríguez-Muñoz R, Tregenza T. Multiple post-mating barriers to hybridization in field crickets. Mol Ecol 2013; 22:1640-9. [PMID: 23294288 DOI: 10.1111/mec.12187] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Revised: 11/19/2012] [Accepted: 11/22/2012] [Indexed: 11/29/2022]
Abstract
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 be very widespread and have been identified based on the observations of higher paternity of conspecifics in several species. However, a relationship between the fate of sperm from two species within the female and paternity has never been demonstrated. We use competitive microsatellite PCR to show that in two hybridising cricket species, Gryllus bimaculatus and G. campestris, sequential cryptic reproductive barriers are present. In competition with heterospecifics, more sperm from conspecific males is stored by females. Additionally, sperm from conspecific males has a higher fertilisation probability. This reveals that conspecific sperm precedence can occur through processes fundamentally under the control of females, providing avenues for females to evolve multiple mating as a defence against hybridization, with the counterintuitive outcome that promiscuity reinforces isolation and may promote speciation.
Collapse
Affiliation(s)
- Frances Tyler
- College of Life and Environmental Sciences, Centre for Ecology and Conservation, University of Exeter, Cornwall Campus, Penryn, Cornwall, UK
| | | | | | | | | | | |
Collapse
|
10
|
Veen T, Faulks J, Tyler F, Lloyd J, Tregenza T. Diverse reproductive barriers in hybridising crickets suggests extensive variation in the evolution and maintenance of isolation. Evol Ecol 2012. [DOI: 10.1007/s10682-012-9610-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
11
|
Pincheira‐Donoso D. Cautionary comments on the influence of chemical‐based interactions as potential drivers of sexual speciation in
L
iolaemus
lizards. J Zool (1987) 2012. [DOI: 10.1111/j.1469-7998.2012.00948.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- D. Pincheira‐Donoso
- Centre for Ecology and Conservation College of Life & Environmental Sciences University of Exeter Exeter UK
| |
Collapse
|