Reproduction and hybrid load in all-hybrid populations of Rana esculenta water frogs in Denmark

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Reproduction and hybrid load in all-hybrid populations of Rana esculenta water frogs in Denmark. / Christiansen, Ditte Guldager; Fog, Kåre; Pedersen, Bo Vest; Boomsma, Jacobus Jan.

In: Evolution, Vol. 59, No. 6, 2005, p. 1348-1361.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Christiansen, DG, Fog, K, Pedersen, BV & Boomsma, JJ 2005, 'Reproduction and hybrid load in all-hybrid populations of Rana esculenta water frogs in Denmark', Evolution, vol. 59, no. 6, pp. 1348-1361. https://doi.org/10.1111/j.0014-3820.2005.tb01784.x

APA

Christiansen, D. G., Fog, K., Pedersen, B. V., & Boomsma, J. J. (2005). Reproduction and hybrid load in all-hybrid populations of Rana esculenta water frogs in Denmark. Evolution, 59(6), 1348-1361. https://doi.org/10.1111/j.0014-3820.2005.tb01784.x

Vancouver

Christiansen DG, Fog K, Pedersen BV, Boomsma JJ. Reproduction and hybrid load in all-hybrid populations of Rana esculenta water frogs in Denmark. Evolution. 2005;59(6):1348-1361. https://doi.org/10.1111/j.0014-3820.2005.tb01784.x

Author

Christiansen, Ditte Guldager ; Fog, Kåre ; Pedersen, Bo Vest ; Boomsma, Jacobus Jan. / Reproduction and hybrid load in all-hybrid populations of Rana esculenta water frogs in Denmark. In: Evolution. 2005 ; Vol. 59, No. 6. pp. 1348-1361.

Bibtex

@article{675f86c074c311dbbee902004c4f4f50,
title = "Reproduction and hybrid load in all-hybrid populations of Rana esculenta water frogs in Denmark",
abstract = "All-hybrid populations of the water frog, Rana esculenta, are exceptional in consisting of independently and to some extent sexually reproducing interspecific hybrids. In most of its range R. esculenta reproduces hemiclonally with one of the parental species, R. lessonae or R. ridibunda, but viable populations of diploid and triploid hybrids, in which no individuals of the parental species have been found, exist in the northern part of the range. We test the hypothesis that nonhybrids arise every year in these all-hybrid populations, but die during larval development. Microsatellite markers were used to determine the genotypes of adults and abnormal and healthy offspring in three allhybrid populations of R. esculenta in Denmark. Of all eggs and larvae, 63{\%} developed abnormally or died, with some being nonhybrid (genomes matching one of the parental species), many being aneuploid (with noninteger chromosome sets), a few being tetraploid, and many eggs possibly being unfertilized. The 37{\%} surviving and apparently healthy froglets were all diploid or triploid hybrids. In all three populations, gametogenesis matched the pattern previously described for all-hybrid R. esculenta populations in which most triploid adults have two R. lessonae genomes. This pattern was surprising for the one population in which triploid adults had two R. ridibunda genomes, because here it leads to a deficiency of gametes with an R. lessonae genome and should compromise the stability of this population. We conclude that faulty gametogenesis and mating between frogs with incompatible gametes induce a significant hybrid load in all-hybrid populations of R. esculenta, and we discuss compensating advantages and potential evolutionary trajectories to reduce this hybrid load.",
author = "Christiansen, {Ditte Guldager} and K{\aa}re Fog and Pedersen, {Bo Vest} and Boomsma, {Jacobus Jan}",
note = "KEYWORDS Egg sizes • gametes • hybridogenesis • microsatellites • population stability • sex determination • triploids",
year = "2005",
doi = "10.1111/j.0014-3820.2005.tb01784.x",
language = "English",
volume = "59",
pages = "1348--1361",
journal = "Evolution",
issn = "0014-3820",
publisher = "Wiley-Blackwell",
number = "6",

}

RIS

TY - JOUR

T1 - Reproduction and hybrid load in all-hybrid populations of Rana esculenta water frogs in Denmark

AU - Christiansen, Ditte Guldager

AU - Fog, Kåre

AU - Pedersen, Bo Vest

AU - Boomsma, Jacobus Jan

N1 - KEYWORDS Egg sizes • gametes • hybridogenesis • microsatellites • population stability • sex determination • triploids

PY - 2005

Y1 - 2005

N2 - All-hybrid populations of the water frog, Rana esculenta, are exceptional in consisting of independently and to some extent sexually reproducing interspecific hybrids. In most of its range R. esculenta reproduces hemiclonally with one of the parental species, R. lessonae or R. ridibunda, but viable populations of diploid and triploid hybrids, in which no individuals of the parental species have been found, exist in the northern part of the range. We test the hypothesis that nonhybrids arise every year in these all-hybrid populations, but die during larval development. Microsatellite markers were used to determine the genotypes of adults and abnormal and healthy offspring in three allhybrid populations of R. esculenta in Denmark. Of all eggs and larvae, 63% developed abnormally or died, with some being nonhybrid (genomes matching one of the parental species), many being aneuploid (with noninteger chromosome sets), a few being tetraploid, and many eggs possibly being unfertilized. The 37% surviving and apparently healthy froglets were all diploid or triploid hybrids. In all three populations, gametogenesis matched the pattern previously described for all-hybrid R. esculenta populations in which most triploid adults have two R. lessonae genomes. This pattern was surprising for the one population in which triploid adults had two R. ridibunda genomes, because here it leads to a deficiency of gametes with an R. lessonae genome and should compromise the stability of this population. We conclude that faulty gametogenesis and mating between frogs with incompatible gametes induce a significant hybrid load in all-hybrid populations of R. esculenta, and we discuss compensating advantages and potential evolutionary trajectories to reduce this hybrid load.

AB - All-hybrid populations of the water frog, Rana esculenta, are exceptional in consisting of independently and to some extent sexually reproducing interspecific hybrids. In most of its range R. esculenta reproduces hemiclonally with one of the parental species, R. lessonae or R. ridibunda, but viable populations of diploid and triploid hybrids, in which no individuals of the parental species have been found, exist in the northern part of the range. We test the hypothesis that nonhybrids arise every year in these all-hybrid populations, but die during larval development. Microsatellite markers were used to determine the genotypes of adults and abnormal and healthy offspring in three allhybrid populations of R. esculenta in Denmark. Of all eggs and larvae, 63% developed abnormally or died, with some being nonhybrid (genomes matching one of the parental species), many being aneuploid (with noninteger chromosome sets), a few being tetraploid, and many eggs possibly being unfertilized. The 37% surviving and apparently healthy froglets were all diploid or triploid hybrids. In all three populations, gametogenesis matched the pattern previously described for all-hybrid R. esculenta populations in which most triploid adults have two R. lessonae genomes. This pattern was surprising for the one population in which triploid adults had two R. ridibunda genomes, because here it leads to a deficiency of gametes with an R. lessonae genome and should compromise the stability of this population. We conclude that faulty gametogenesis and mating between frogs with incompatible gametes induce a significant hybrid load in all-hybrid populations of R. esculenta, and we discuss compensating advantages and potential evolutionary trajectories to reduce this hybrid load.

U2 - 10.1111/j.0014-3820.2005.tb01784.x

DO - 10.1111/j.0014-3820.2005.tb01784.x

M3 - Journal article

VL - 59

SP - 1348

EP - 1361

JO - Evolution

JF - Evolution

SN - 0014-3820

IS - 6

ER -

ID: 92835