Friend-or-foe? Behavioural evidence suggests interspecific discrimination leading to low probability of hybridization in two coexisting rock lizard species (Lacertidae, Darevskia)

Galoyan, Eduard; Tsellarius, Elena Yu.; Arakelyan, Marine

doi:10.1007/s00265-019-2650-7

Cited by 13 publications

(8 citation statements)

References 44 publications

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“…The influence of sexual selection and polymorphism on species speciation occurs mainly at the pre-zygotic stage (West-Eberhard 1986; Coyne and Orr 1989; Gray and Cade 2000; Ritchie 2007). However, the influence of this stage in lacertids speciation is unclear: some species are partially able to recognize each other using pheromones (Barbosa et al 2006; Gabirot et al 2012), but interspecific courting seems to be frequent (Martín and López 2006; Galoyan et al 2019), suggesting that post-zygotic isolation also play a strong role in the speciation process (Carretero 2008; Pinho et al 2009). On the other hand, the groups in which an effect of sexual selection and polymorphism was reported are taxa where the pre-zygotic isolation is determinant for speciation (e.g birds, Barraclough et al 1995; Brambilla et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Colour polymorphism and conspicuousness do not increase speciation rates in Lacertids

Solan

Sinervo

Géniez

et al. 2023

Preprint

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Conspicuous body colors and color polymorphism have been hypothesized to increase rates of speciation. Conspicuous colors are evolutionary labile, and often involved in intraspecific sexual signaling and thus may provide a raw material from which reproductive isolation can easily evolve, while polymorphism could favor rapid evolution of new lineages through morphic speciation. Here, we investigated the influence of the presence/absence of conspicuous colorations, and of color polymorphism on the speciation of Lacertids. We used several state-dependent diversification models, and showed that, regardless of the methods, conspicuous colorations and color polymorphism were not related to species speciation. While the lack of correlation between conspicuous colorations and speciation rates is in line with most of the literature testing this hypothesis, the results for color polymorphism contradict previous studies, and question the generality of the morphic speciation hypothesis.

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Section: Discussionmentioning

confidence: 99%

Colour polymorphism and conspicuousness do not increase speciation rates in Lacertids

Solan

Sinervo

Géniez

et al. 2023

Preprint

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“…For the present study we used nger phalanxes of rock lizards (Darevskia Arribas, 1997) from Armenia. The total number of age-estimated individuals using skeletochronological method (including those considered in the present paper) was 43, among which there were 13 We used paired Wilcoxon test to compare the gures of the esteemed age by counting the LAGs on the nger bone and the claw sheath of the same nger and performed Spearmen's rank correlation test (r s ) to compare these two data sets. The signi cance level was set up at p = 0.05 in each test.…”

Section: Study Subjects and Data Analysismentioning

confidence: 99%

“…Relying on longitudinal monitoring, ecological and behavioural studies suggest that toe-clipping and distal nger phalanx analysis should be used to collect the material [11][12][13][14][15]. These methods allow the researchers to conduct a life-long study to estimate the growth pattern of individuals.…”

Section: Introductionmentioning

confidence: 99%

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Double-check in lizard age estimation: use of phalanx bone and keratin claw sheath lamellas

Galoyan

Sopilko

Kovalyeva

et al. 2022

Preprint

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Background Age estimation in vertebrates has always been a tricky and dubious procedure. The method of skeletochronology is commonly used for age estimation in poikilothermic and in some homoiothermic animals. This method is based on counting arrested growth lines (LAGs) within bone structures (tubule bones or teeth) in modern living or fossil animals. However, it fails to reveal the age with necessary precision due to hibernation and aestivation periods, hence, some referent method of age estimation is required for evaluating better precision. During the previous studies of population age structure in several species of rock lizards (Darevskia) we prepared microscope slides of finger bones and noticed presence of well-distinguished cornified unguis lamellas of the finger claws. We put forward that the number of these lamellas coincides with the number of LAGs in the periosteum bone of the same finger. To test this hypothesis, we performed special study and compared number of LAGs within each finger bone and cornified claw using traditional skeletochronological technique. Results The conducted analysis revealed positive correlation (rs=0.933, p < 0.001) and no significant differences between the number of LAGs in the bone and unguis lamellas of the same fingers of three species of Palearctic rock lizards (Darevskia portschinskii, D. raddei, D. valentini). We found no distinguished cornified lamellas in the claw of the tropical skink Sphenomoprhus maculatus. Conclusion We assume that the proposed method may be an efficient and reliable means of ecological studies based on toe-clipping and vital age estimation in lizards and, possibly, other poikilothermic vertebrates, as a double-check method based on two independent registration structures present potentially preventing possible mistakes in age estimation.

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“… Darevskia portschinskii co-exist in three SZs with “daughter” species D. dahli and D. rostombekowi in two SZs. Two parenteal bisexual species D. portschinskii and D. r. raddei co-exist in two SZs ( Uzzell and Darevsky 1975 , Galoyan et al 2019 , Galoyan et al 2020 ). All zones are mainly located in the lower band of mountain forests in relatively warm and arid forest and shrub biotopes.…”

Section: Taxon Treatmentsmentioning

confidence: 99%

New records and geographic distribution of the sympatric zones of unisexual and bisexual rock lizards of the genus Darevskia in Armenia and adjacent territories

Petrosyan¹,

Osipov²,

Бобров³

et al. 2020

BDJ

785

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Caucasian rock lizards of the genus is a unique taxa, including both bisexual and parthenogenetic species. The parthenogenetic species have originated as a result of natural hybridisation between females and males of different bisexual species. The species involved in interspecific hybridisation are called parental. However, sympatric zones (SZ) of unisexual and bisexual rock lizards of the Caucasus are still poorly studied, although they are very important for understanding the role of hybrid individuals of different origin in reticulate evolution. This paper presents the location of the SZs of parthenogenetic and their parental bisexual rock lizards of the genus Darevskia in Armenia and adjacent territories of Georgia and Nagorno-Karabakh. We summarised the locations of the SZs identified from 1957 to the present, based on our field survey data gathered in 2018-2019 and records from publications and museum collections. This dataset includes 39 SZs of three types: SZ of parental bisexual species, SZ of parental species with unisexual species and SZ of the parthenogenetic species. For each zone, species composition, geographical and altitudinal distribution are presented. New records expand our knowledge of the geographical and altitudinal distribution of SZs in these species and provide additional data for understanding the mechanisms of reticulate evolution and hybridogeneous speciation in the past, present and future. The new records, including geographical and altitudinal distributions of three types of SZs, are presented, which expand the previously-known list to 39 locations of contact zones for parthenogenetic and its bisexual parental species of rock lizards of the genus Darevskia in Armenia and the adjacent territories of Georgia and Nagorno-Karabakh.

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Friend-or-foe? Behavioural evidence suggests interspecific discrimination leading to low probability of hybridization in two coexisting rock lizard species (Lacertidae, Darevskia)

Cited by 13 publications

References 44 publications

Colour polymorphism and conspicuousness do not increase speciation rates in Lacertids

Colour polymorphism and conspicuousness do not increase speciation rates in Lacertids

Double-check in lizard age estimation: use of phalanx bone and keratin claw sheath lamellas

New records and geographic distribution of the sympatric zones of unisexual and bisexual rock lizards of the genus Darevskia in Armenia and adjacent territories

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