Paternity in an Orinoco Population of Endangered Arrau River Turtles, Podocnemis expansa (Pleurodira; Podocnemididae), from Venezuela

Pearse, Devon E.; Dastrup, R. Brigham; Hernández, Omar; Sites, Jack W.

doi:10.2744/1071-8443(2006)5[232:piaopo]2.0.co;2

Cited by 22 publications

(30 citation statements)

References 23 publications

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“…Among the existing studies of paternity in the genus Podocnemis, we can cite Valenzuela (2000) and Pearse et al (2006) for P. expansa and Fantin et al (2008) for P. unifilis. Valenzuela (2000) and Pearse et al (2006), utilizing microsatellite markers, reported the existence of multiple paternity in P. expansa nests.…”

Section: Discussionmentioning

confidence: 99%

Short Communication Polyandry in the red-headed river turtle Podocnemis erythrocephala (Testudines, Podocnemididae) in the Brazilian Amazon

Fantin¹,

Farias²,

Monjeló³

et al. 2010

Genet. Mol. Res.

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ABSTRACT. The genus Podocnemis comprises six living species, including P. erythrocephala (irapuca -red-headed river turtle). Data are available concerning the reproductive biology of the species of the genus Podocnemis, but little is known about their reproductive strategies. Considering the total lack of such data for P. erythrocephala, and with the goal of contributing information on their mode of reproduction, we examined the relationships among individuals of nests of this turtle, using microsatellite markers. Using four microsatellite loci, we analyzed the progeny in six nests from two localities in the Brazilian Amazon (Santa Isabel do rio Negro and Parintins). All juveniles from each nest were analyzed. The genotypes of each juvenile from each nest were identified, and because a sample of female DNA was not available, the maternal genotype was inferred from homozygous individuals in each nest. We found that this species is promiscuous; there was multiple paternity in five of the six nests analyzed. In addition to being important for the understanding of evolutionary and genetic processes, this type of information will be useful for chelonian management projects. Our data suggest one possible difference between reproductive patterns of the different populations. This multi-paternal condition may be a natural reproductive strategy for the preservation of the genetic diversity of this species.

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Section: Discussionmentioning

confidence: 99%

Short Communication Polyandry in the red-headed river turtle Podocnemis erythrocephala (Testudines, Podocnemididae) in the Brazilian Amazon

Fantin¹,

Farias²,

Monjeló³

et al. 2010

Genet. Mol. Res.

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“…Valenzuela (2000) reported 100% multiple paternity in 2 nests of a P. expansa population from Colombia using eight microsatellite loci. Pearse et al (2006) studied the same species as Venezuela using seven microsatellite loci and only found 10.3% multiple paternity in 32 nests. The large difference in the rate of multiple paternity between these populations suggests that there might be variation in patterns of paternity among the very small sample size in the earlier study.…”

Section: Discussionmentioning

confidence: 99%

“…Recent work has demonstrated multiple paternity in P. expansa, P. erythrocephala and (Pearse et al 2006, Fantin et al 2008, Fantin et al 2010. P. expansa females show polyandric behavior that varies in rates of multiple paternity among different nesting localities (Valenzuela 2000, Pearse et al 2006.…”

Section: Introductionmentioning

confidence: 99%

“…P. expansa females show polyandric behavior that varies in rates of multiple paternity among different nesting localities (Valenzuela 2000, Pearse et al 2006. Fantin et al (2008) found multiple paternity in studies of nests; and Fantin et al (2010) reported multiple paternity in P. erythrocephala nests.…”

Section: Introductionmentioning

confidence: 99%

“…Molecular data have been broadly used to study chelonian mating systems (DeWoody et al 2000, Neff et al 2000, Valenzuela 2000, Myers and Zamudio 2004, Pearse et al 2006. Among the molecular techniques available, microsatellite markers have been the most frequently and successfully applied tool for determining paternity patterns in turtle species.…”

Section: Introductionmentioning

confidence: 99%

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Evidence of multiple paternal contribution in Podocnemis sextuberculata (Testudines: Podocnemididae) detected by microsatellite markers

Fantin

Pereira

Ferreira³

et al. 2015

Phyllomedusa

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Evidence of multiple paternity in Podocnemis sextuberculata (Testudines: Podocnemididae) detected by microsatellite markers. We found evidence of multiple paternity in a sample of 12 Podocnemis sextuberculata nests including seven nests (80 hatchlings) collected along the Amazonas River, in the municipality of Barreirinha, AM, As observed in other species of the genus, P. sextuberculata also presented polyandric behavior. By means of allelic frequency and variation in six microsatellite loci for each location, the occurrence of multiple paternity in sampled nests of this species was inferred, even though the maternal genotype was unknown. For one of the nests, a minimum of four males contributed to the clutch, whereas for nearly all remaining nests at least two males contributed. Only one of the twelve nests did not show clear evidence for contributions from more than one male P. sextuberculata.Keywords: mating system, paternity, Podocnemis, reproduction, turtles.Resumo Evidência de contribuição paterna múltipla em Podocnemis sextuberculata (Chelonia: Podocnemididae) por meio de marcadores microssatélites. Encontramos evidências de paternidade múltipla em uma amostra de 80 recém-eclodidos de sete ninhos de Podocnemis sextuberculata situados ao longo do rio Amazonas, no município de Barreirinha, AM, Brasil, e 54 indivíduos recém-eclodidos de cinco ninhos na Reserva Biológica Abufari, Tapauá, AM, Brasil. Como observado em outras espécies do gênero, P. sextuberculata apresentou comportamento poliândrico. Por meio da frequência alélica e variação em seis locos microssatélite para cada localidade, a ocorrência de 90Phyllomedusa -14(2), December 2015 paternidade múltipla em ninhos amostrados dessa espécie foi inferida, mesmo o genótipo da mãe sendo desconhecido. Para um dos ninhos, um mínimo de quatro machos contribuíram para a prole, enquanto que para quase todos os outros ninhos, pelo menos dois machos contribuíram. Apenas um dos 12 ninhos não mostrou evidência clara de contribuição de mais de um macho. Esta é a primeira evidência genética de paternidade múltipla em P. sextuberculata.

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Polyandry and multiple paternities in the threatened Agassiz’s desert tortoise, Gopherus agassizii

et al. 2011

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We used data from 17 to 20 microsatellite markers to investigate the incidence of multiple paternities in wild Agassiz's desert tortoises, Gopherus agassizii. Neonates were sampled from clutches of eggs laid by wild mothers in nesting enclosures at Edwards Air Force Base and at the Marine Corps Air Ground Combat Center, California. We genotyped 28 clutches from 26 females sampling an average of six neonates per clutch. The number of paternal alleles was used to determine the minimum number of sires for each clutch. Based on conservative criteria requiring evidence from at least two loci to determine multiple paternity, a minimum of 64% of females were polyandrous, while a minimum of 57% of clutches were sired by multiple males. This formed one of the highest incidences of multiple paternities recorded to date in any species of tortoise. The high number of microsatellite loci involved in the analyses allowed detection of multiple paternities in clutches where this may have been missed if fewer loci were used. Our results highlighted the potential pitfalls of quantitatively comparing paternity studies based on differing sampling strategies. Finally, we summarized the conservation implications of the high rate of multiple paternities in this threatened species.

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Paternity in an Orinoco Population of Endangered Arrau River Turtles, Podocnemis expansa (Pleurodira; Podocnemididae), from Venezuela

Cited by 22 publications

References 23 publications

Short Communication Polyandry in the red-headed river turtle Podocnemis erythrocephala (Testudines, Podocnemididae) in the Brazilian Amazon

Short Communication Polyandry in the red-headed river turtle Podocnemis erythrocephala (Testudines, Podocnemididae) in the Brazilian Amazon

Evidence of multiple paternal contribution in Podocnemis sextuberculata (Testudines: Podocnemididae) detected by microsatellite markers

Polyandry and multiple paternities in the threatened Agassiz’s desert tortoise, Gopherus agassizii

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