Genome Dosage Effect and Hybrid Morphology — The Case of the Hybridogenetic Water Frogs of the<i>Pelophylax esculentus</i>Complex

Kierzkowski, Piotr; Paśko, Łukasz; Rybacki, Mariusz; Socha, Małgorzata; Ogielska, Maria

doi:10.5735/086.048.0106

Cited by 29 publications

(26 citation statements)

References 17 publications

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“…Such mosaic‐style genetic patterns, as observed for the salmon X char hybrid, have been observed before in other hybrids, including grass carp ( Ctenopharyngo donidella ), water frogs ( Pelophylaxshqi pericus ) and fire‐bellied toads ( Bombina bombina ; Cassani and Caton, ; Vörös et al., ; Kierzkowski et al., ). Further, Hu et al.…”

Section: Discussionsupporting

confidence: 66%

“…Such mosaic-style genetic patterns, as observed for the salmon X char hybrid, have been observed before in other hybrids, including grass carp (Ctenopharyngo donidella), water frogs (Pelophylaxshqi pericus) and fire-bellied toads (Bombina bombina; Cassani and Caton, 1984;V€ or€ os et al, 2007;Kierzkowski et al, 2011). Further, Hu et al (2012) counted the number of lateral scales and dorsal fin rays in diploid and triploid hybrids between female Megalobrama amblycephala and male Xenocypris davidi (carp species) and found that the hybrids had intermediate counts compared to the parents for lateral scales, but found no difference between diploids and triploids.…”

Section: Discussionsupporting

confidence: 64%

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Hybrid salmonids: ploidy effect on skeletal meristic characteristics and sea lice infection susceptibility

et al. 2014

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Summary This study examined how triploidization and species hybridization affects skeletal related meristic characteristics in salmonids with the goal of understanding the maternal and paternal contribution. The study also investigated the hybrid sea louse infection rate in hybrid salmonids. In order to do so, a number of vertebrae, scales along the lateral line, and dorsal fin rays were measured in diploid and triploid Atlantic salmon, Arctic char, and Atlantic salmon (female) X Arctic char (male) hybrids. The success of triploidization was 100%, and some spontaneous triploid individuals (~15%) were found among the hybrids. In general, hybrids displayed intermediate counts for all three characteristics with salmon displaying the highest number of dorsal fin rays, and char displaying the highest number of scales and vertebrae. The effect of triploidization was always strongest among the hybrids. However, the direction of the effect differed between structures in the hybrid; triploidization increased the number of vertebrae and reduced the number of fin rays towards the level observed in diploid char, and reduced the number of scales towards the level observed in diploid salmon. We conducted a second experiment whereby diploid Atlantic salmon and Atlantic salmon (female) X Arctic char (male) hybrids were exposed to an experimental challenge with the parasitic salmon louse (Lepeophtheirus salmonis). There was no difference in the sea‐lice infection level between Atlantic salmon and the hybrids. This study shows that the present model with diploid and triploid Atlantic salmon (female) X Arctic char (male) hybrids may be a useful tool for the study of which traits are maternally and paternally inherited in salmonids. The understanding of morphological development with regard to meristic traits could be advantageous for both hybrid and triploid fish domestication.

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Section: Discussionsupporting

confidence: 66%

Section: Discussionsupporting

confidence: 64%

Hybrid salmonids: ploidy effect on skeletal meristic characteristics and sea lice infection susceptibility

et al. 2014

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“…Ploidy of P. esculentus individuals was estimated before performing crosses using erythrocyte long axis measurements according to Kierzkowski et al . 98 . The blood smears were obtained after gentle cutting one of the phalanges of a hind limb and air-dried.…”

Section: Methodsmentioning

confidence: 99%

The programmed DNA elimination and formation of micronuclei in germ line cells of the natural hybridogenetic water frog Pelophylax esculentus

Chmielewska¹,

Dedukh²,

Haczkiewicz³

et al. 2018

Sci Rep

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DNA elimination is a radical form of gene silencing and occurs both in somatic and germ cells. The programmed DNA elimination occurs during gametogenesis in interspecies hybrids that reproduce by hybridogenesis (stick insects, fishes, and amphibians) and concerns removal of whole genomes of one of the parental species and production of clonal gametes propagating the genome of the other species. The cellular mechanisms differ considerably in hybridogenetic insects and fishes but remains unknown in edible frogs Pelophylax esculentus, natural hybrids between Pelophylax lessonae and Pelophylax ridibundus. Here we report DNA elimination mechanism in early developing gonads of diploid and triploid hybrid frogs, studied by TEM, immunofluorescence, and cytochemistry. In gonocytes of both sexes (primary oogonia and prespermatogonia), micronuclei emerge as detached nuclear buds formed during interphase. We found depletion of nuclear pore complexes in micronuclear membrane and chromatin inactivation via heterochromatinization followed by degradation of micronuclei by autophagy. Micronuclei formation does not lead to apoptotic cell death showing that genome elimination is a physiological process. Chromatin elimination via micronuclei in P. esculentus is unique among hybridogenetic animals and contributes to broadening the knowledge about reproductive modes in animals.

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“…Shorter limbs (lower values in T, F), large, prominent, symmetrical and semicircular Cint (V1, VI1), yellow flanks and hind legs (I3, 4, 5, II1, III1), pointed snouts (higher values in Dno, Spi) and the narrowest heads among the complex (lower values for Ltc) were typical for the second parental species, P. lessonae. Hybrid genotypes are reported to be morphologically closer to P. lessonae than to P. ridibundus (Kierzkowski et al, 2011). However, some authors (Krizmanić, 2008a) reported that P. esculentus is morphologically closer to P. ridibundus than to P. lessonae.…”

Section: Discussionmentioning

confidence: 99%

A procedure for taxon assessment based on morphological variation in European water frogs (Pelophylax esculentus complex)

Breka¹,

Krizmanić²,

Vukov³

et al. 2020

Turk J Zool

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Genome Dosage Effect and Hybrid Morphology — The Case of the Hybridogenetic Water Frogs of thePelophylax esculentusComplex

Cited by 29 publications

References 17 publications

Hybrid salmonids: ploidy effect on skeletal meristic characteristics and sea lice infection susceptibility

Hybrid salmonids: ploidy effect on skeletal meristic characteristics and sea lice infection susceptibility

The programmed DNA elimination and formation of micronuclei in germ line cells of the natural hybridogenetic water frog Pelophylax esculentus

A procedure for taxon assessment based on morphological variation in European water frogs (Pelophylax esculentus complex)

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