Genetic variability in goitred gazelle Gazella subgutturosa subgutturosa: allozymes and karyotypes

Schreiber, Arnd; Hegel, Gisela von

doi:10.4098/at.arch.99-6

Cited by 3 publications

(3 citation statements)

References 25 publications

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“…To our knowledge, the present analysis is the first to evaluate genetic diversity in a free-living population of goitered gazelles. Previous studies have addressed this question based on chromosomal and allozyme data in captive populations of both G. s. subgutturosa and G. s. marica and expectedly found low levels of polymorphism (e.g., Granjon et al 1991;Schreiber and Hegel 1999). These data, however, are not directly comparable to ours due to the different marker systems analysed.…”

Section: Article In Pressmentioning

confidence: 70%

First genetic analysis of a free-living population of the threatened goitered gazelle (Gazella subgutturosa)

et al. 2010

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Section: Article In Pressmentioning

confidence: 70%

First genetic analysis of a free-living population of the threatened goitered gazelle (Gazella subgutturosa)

et al. 2010

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“…While most of the ancestral autosomes are still identifiable in gazelles using banding techniques, many of them have fused to form biarmed chromosomes (including a common X‐to‐autosome‐5 fusion), so the chromosome numbers in the genus Gazella are as low as 2 n = 30–35 (Groves & Grubb, 2011; Vassart et al., 1995 and references therein). The chromosome numbers of G. subgutturosa , 2 n = 31 in males, 2 n = 30 in females (Schreiber & Hegel, 1999), are in the range of other gazelle species. In contrast, G. bennettii has much larger chromosome numbers, that is, 2 n = 49–51 in males and 2 n = 50–52 in females (Furley, Tichy, & Uerpmann, 1988; Kumamoto, Kingswood, Rebholz, & Houck, 1995).…”

Section: Discussionmentioning

confidence: 99%

Repeated hybridization of two closely related gazelle species (Gazella bennettii and Gazella subgutturosa) in central Iran

Fadakar

Malekian

Hemami

et al. 2020

Ecology and Evolution

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Interspecific hybridization increasingly occurs in the course of anthropogenic actions, such as species translocations and introductions, and habitat modifications or occurs in sympatric species due to the shortage of conspecific mates. Compared with anthropogenically caused hybridization, natural hybridization is more difficult to prove, but both play an important role in conservation. In this study, we detected hybridization of two gazelle sister species, Gazella bennettii (adapted to dry areas) and Gazella subgutturosa (adapted to open plains), in five habitat areas, where G. bennettii naturally occur in central Iran. The hybrids have a nuclear genomic identity (based on two introns), habitat preference, and phenotype of G. bennettii , but the mitochondrial identity (based on cyt b ) of G. subgutturosa . We suggest that natural hybridization of female G. subgutturosa and male G. bennettii happened twice in central Iran in prehistoric times, based on the haplotype pattern that we found. However, we found indications of recent hybridization between both species under special circumstances, for example, in breeding centers, due to translocations, or in areas of sympatry due to the shortage of conspecific mates. Therefore, these two species must be kept separately in the breeding centers, and introduction of one of them into the habitat of the other must be strictly avoided.

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“…Likewise, population genetic theories underlying captive breeding programs often address the maintenance of genetic diversity but may neglect total offspring production (e.g., Kimura & Crow 1963; Ballou et al 1995; Montgomery et al 1997). The latter orientation is exemplified by the increasing number of studies that apply molecular markers to monitor the maintenance of genetic diversity in either captive or supplemental breeding programs (e.g., Pereira & Wajntal 1999; Schreiber & Hegel 1999; Fiumera et al 2000).…”

Section: Discussionmentioning

confidence: 99%

Maximizing Offspring Production While Maintaining Genetic Diversity in Supplemental Breeding Programs of Highly Fecund Managed Species

Fiumera

Porter

Looney³

et al. 2004

Conservation Biology

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Supplemental breeding is an intensive population management strategy wherein adults are captured from nature and spawned in controlled settings, and the resulting offspring are later released into the wild. To be effective, supplemental breeding programs require crossing strategies that maximize offspring production while maintaining genetic diversity within each supplemental year class. We used computer simulations to assess the efficacy of different mating designs to jointly maximize offspring production and maintain high levels of genetic diversity (as measured by the effective population size) under a variety of biological conditions particularly relevant to species with high fecundity and external fertilization, such as many fishes. We investigated four basic supplemental breeding designs involving either monogamous pairings or complete factorial designs (in which every female is mated to every male and vice versa), each with or without the added stipulation that all breeders contribute equally to the total reproductive output. In general, complete factorial designs that did not equalize parental contributions came closest to the goal of maximizing offspring production while still maintaining relatively large effective population sizes. Next, we estimated the effective population size of 10 different supplemental year classes within the breeding program of the robust redhorse (Moxostoma robustum). Two year classes failed to produce progeny, whereas successful year classes used partial factorial designs to realize effective sizes ranging from 2 to 26 individuals. On average, a complete factorial design could increase the effective size of each robust redhorse supplemental year class by 19%.Programas Reproductivos Suplementarios para Especies Bajo Manejo: Estrategias para Maximizar la Producción de Crías y Mantener la Diversidad Genética en Taxones Altamente Fecundos Resumen: La reproducción suplementaria es una estrategia de manejo intensivo de poblaciones en la que se capturan adultos silvestres, desovan en condiciones controladas y las crías resultantes son posteriormente liberadas al medio silvestre. Para ser efectivos, los programas de reproducción suplementaria requieren estrategias cruzadas que maximicen la producción de crías mientras se mantiene la diversidad genética dentro de cada clase suplementaria anual. Utilizamos simulaciones de computadora para evaluar la eficacia de diferentes diseños de apareamiento para conjuntamente maximizar la producción de crías y mantener niveles altos de diversidad genética (medida por el tamaño poblacional efectivo) bajo una variedad de condiciones biológicas particularmente relevantes para especies de alta fecundidad y fecundación externa, como muchos peces. Investigamos cuatro diseños básicos de reproducción suplementaria involucrando apareamientos monógamos o diseños completamente factoriales (en los que cada hembra es apareada con cada macho y viceversa), cada uno con o sin la estipulación de que todos los reproductores contribuyen equitativamente al total de la ...

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Genetic variability in goitred gazelle Gazella subgutturosa subgutturosa: allozymes and karyotypes

Cited by 3 publications

References 25 publications

First genetic analysis of a free-living population of the threatened goitered gazelle (Gazella subgutturosa)

First genetic analysis of a free-living population of the threatened goitered gazelle (Gazella subgutturosa)

Repeated hybridization of two closely related gazelle species (Gazella bennettii and Gazella subgutturosa) in central Iran

Maximizing Offspring Production While Maintaining Genetic Diversity in Supplemental Breeding Programs of Highly Fecund Managed Species

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