Allozyme diversity in three endemic species of<i>Cistus</i>(Cistaceae) from the Canary Islands: intraspecific and interspecific comparisons and implications for genetic conservation

Batista, Francisco; Bañares, Ángel; Caujapé‐Castells, Juli; Carqué, Eduardo; Marrero-Gómez, Manuel; Sosa, Pedro A.

doi:10.2307/3558402

Cited by 42 publications

(31 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, although Eguiarte et al (1992) found a similar value to P. canariensis' in the rain forest palm Astrocaryum mexicanum (He ¼ 0.153), lower values were described in Carpentaria acuminata, (He ¼ 0.143), Ptychosperma bleeseri (He ¼ 0.006) and Pinanga tenella (He ¼ 0.133) (Shapcott, 1998a(Shapcott, , b, 1999 and in Washingtonia filifera (He ¼ 0.008) (McClenaghand and Beauchamp, 1986). This result agrees with other studies that show higher genetic diversity levels in Canarian endemic plants than in those distributed in other oceanic islands (Francisco-Ortega et al, 2000;Batista et al, 2001;Batista and Sosa, 2002;Bouza et al, 2002). On the whole, the three groups of populations exhibited higher genetic variability values than species with similar life history traits (monocotyledons, endemics and species with sexual reproduction).…”

Section: Discussionsupporting

confidence: 81%

“…Of the 43 alleles, 39 were common to both Phoenix species analysed, and this furnishes evidence of their shared evolutionary history. In a recent survey, the sharing of 14 of the 25 total alleles detected in five Canarian taxa of Cistus (Batista et al, 2001) was used to support the close phylogenetic relationship among them. Similarly, a close relatedness between two Brighamia species from Hawaii was inferred from their sharing of only six alleles out of 22 (Gemmill et al, 1998).…”

Section: Genetic Relationships Within Among Speciesmentioning

confidence: 99%

“…Allozyme polymorphisms have provided valuable data to assess the genetic variability of endemic species (Allphin et al, 1998;Godt and Hamrick, 1998;Batista et al, 2001), and their population genetic structuring (Schnabel et al, 1991;Shapcott, 1995;Caujapé-Castells et al, 1999). They have also been used successfully to characterise and differentiate close by related species, ecological varieties or natural and artificial hybrids (Rieseberg et al, 1989;Booij et al, 1995;Bendiab et al, 1998;Elisiário et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Allozyme variation and structure of the Canarian endemic palm tree Phoenix canariensis (Arecaceae): implications for conservation

2004

View full text Add to dashboard Cite

Electrophoretic analysis of 18 allozyme loci was used to estimate the levels and structuring of genetic variation within and among natural populations of the protected endemic palm species from the Canary Islands (Phoenix canariensis) to evaluate its genetic relationship with the widespread congener P. dactylifera, and to assess comparatively the genetic variation in the populations where the two species coexist with morphologically intermediate plants (mixed populations). Our survey revealed that the within-population component explains roughly 75% of the genetic variation levels detected in P. canariensis (A ¼ 1.59; P ¼ 41.8; He ¼ 0.158), which rank higher than those reported for other species of the Arecaceae. A Principal Component analysis (PCA) based on allele frequencies consistently separates populations of P. canariensis and P. dactylifera, and reveals a close genetic relationship between P. canariensis and the mixed populations. Reduced levels of genetic variation in P. canariensis with respect to P. dactylifera, the fact that the genetic makeup of the Canarian endemic (with no unique alleles) is a subset of that found in P. dactylifera, and the high genetic identity between both species strongly suggest that P. canariensis is recently derived from a common ancestor closely related to P. dactylifera.

show abstract

Section: Discussionsupporting

confidence: 81%

Section: Genetic Relationships Within Among Speciesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Allozyme variation and structure of the Canarian endemic palm tree Phoenix canariensis (Arecaceae): implications for conservation

2004

View full text Add to dashboard Cite

show abstract

“…Thus, an accurate estimate of the level and distribution of genetic diversity of threatened and endangered species is an important element in designing conservation programs (Hamrick et al 1991;Schaal et al 1991;Chalmers et al 1992;Cardoso et al 1998). Studies on genetic diversity within and among populations of insular endemic plant species using molecular markers have increased in recent years due to their central importance in planning in situ and ex situ conservation efforts (e.g., de Joode and Wendel 1992; Gemmill et al 1998;FranciscoOrtega et al 2000;Crawford et al 2001;Batista et al 2001;Bouza et al 2002). Three reviews compiled from both the Pacific and Atlantic Oceans (de Joode and Wendel 1992;Francisco-Ortega et al 2000;Crawford et al 2001) showed low diversity in insular endemics in general and suggested that there is lower variation within species of Pacific Island endemics than in the Canary Island endemics.…”

Section: Introductionmentioning

confidence: 98%

Genetic analysis and conservation of the endangered Canary Island woody sow-thistle, Sonchus gandogeri (Asteraceae)

2005

View full text Add to dashboard Cite

Sonchus gandogeri, a woody sow-thistle, is an endangered Canary Island endemic with only two known populations, one in the El Golfo and another in the Las Esperillas of El Hierro. Amplified fragment length polymorphism (AFLP) markers were used to assess the genetic variation within and among populations. The mean genetic diversity of two populations was estimated to be 0.380, and the El Golfo population (0.380) had higher genetic diversity than the southeastern one (0.268). The unbiased Nei's genetic identity between the two populations was 0.846. The mean genetic diversity of S. gandogeri was much higher than that of the other endangered plant species. This is perhaps due to breeding system, life form, extinction, and/or introgressive hybridization and hybrid origin of the taxon. This study also indicates that the two populations are not strongly differentiated (G(ST)=0.149). This study suggests that S. gandogeri is more likely to become extinct due to environmental or demographic forces than genetic factors, such as inbreeding depression. More strict control of introduced herbivores is necessary to protect these populations, and germplasm collection for ex situ conservation is needed.

show abstract

“…No reliable guidelines have been developed for determining the number of transplant individuals required, but the optimal number would increase with diversity in donor populations (e.g., Pavlik 1996, Vogler 1998, Batista et al 2001. Analysis of DNA could demonstrate levels of variation in regions of the genome, but this is not generally done for transplant experiments (Gordon and Rice 1998).…”

Section: Transplant Techniquesmentioning

confidence: 99%

Is transplanting an effective means of preserving vegetation?

Fahselt

2007

Can. J. Bot.

View full text Add to dashboard Cite

Transplantation to new locations is used widely to propagate horticultural and agricultural species but is also promoted as a means of relocating whole communities that stand in the way of development. It may be used as well to move vegetation from the field for experimentation under controlled conditions. Transplantation has not in the past been considered a reliable means of conserving threatened species or reproducing functional characteristics of natural communities, and has been regarded by many as highly ineffective. However, its potential must now be re-examined because of the many recent transplant attempts as well as advances in related fields. Recent trials illustrate that individual endangered species are still particularly difficult to transplant and displaced multi-species sods are almost always changed in the process. Exact reconstruction of communities from individual components is next to impossible because the full complement of species, including critical microbial components, is almost never known. Owing to a limited understanding of phenology, reproduction, functional roles, and interrelationships among constituent microbes, cryptogams, vascular plants, and fauna, transplants may be placed into sites with both biological and physical insufficiencies. Genetic diversity may be lost or, if genotypes from diverse sources are mixed, outbreeding depression may result. Recent advances in soil science, microbial ecology, and population genetics have in some cases improved the effectiveness of transplantation, but new insights mainly permit a fuller appreciation of the causes of failure. Home-site advantage has been demonstrated, and habitat protection appears to be the best and perhaps only reliable way of preserving intact natural communities and rare species. Furthermore, experimentation with vegetational mats under controlled conditions may have little relevance to natural ecosystems.Key words: vegetation, simulation, transplantation, conservation, home-site advantage.Résumé : On utilise souvent la transplantation sur de nouveaux sites pour propager les plantes et stabiliser les paysages perturbés, cependant plusieurs considèrent ce procédé hautement inefficace comme méthode fiable pour conserver les espè-ces menacées et les communautés naturelles. Tout de même, on doit réexaminer sa pertinence, compte tenu de nombreux essais récents de transplantation, ainsi que de progrès dans les domaines connexes. Dans des essais récents, on a constaté, que les espèces menacées demeurent particulièrement difficiles à transplanter, et que le patron des communautés en tapis d'espèces multiples, se modifie presque toujours au cours du processus. La reconstruction exacte des communautés, à partir des composantes individuelles frôle l'impossible parce que l'apport de la totalité des espèces, incluant les composantes microbiennes, demeure presque toujours un inconnu. Comme on comprend peu la phénologie, la reproduction, les rôles fonctionnels et les interrelations entre les microbes, les cryptogames, les p...

show abstract

Allozyme diversity in three endemic species ofCistus(Cistaceae) from the Canary Islands: intraspecific and interspecific comparisons and implications for genetic conservation

Abstract: IMPLICATIONS MlIC GENETIC CONSERVATTON~1ManuxnprCmMd6Jlme200Q,rrvigmacocptcd ISFcbnrarya001.

Cited by 42 publications

References 65 publications

Allozyme variation and structure of the Canarian endemic palm tree Phoenix canariensis (Arecaceae): implications for conservation

Allozyme variation and structure of the Canarian endemic palm tree Phoenix canariensis (Arecaceae): implications for conservation

Genetic analysis and conservation of the endangered Canary Island woody sow-thistle, Sonchus gandogeri (Asteraceae)

Is transplanting an effective means of preserving vegetation?

Contact Info

Product

Resources

About