Population Characteristics of Free-Ranging Barbary Sheep in Texas

Gg, Gray; Cd, Simpson

doi:10.2307/3808154

Cited by 11 publications

(15 citation statements)

References 6 publications

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“…Adult females and juveniles were the sex-age classes more commonly observed, which reflected a general tendency from other studies (Barrett, 1980;Gray and Simpson, 1983;Bigalke, unpubl.). This pattern is characteristic when the population is under an expansive or growing phase, so that from these figures we might expect the arrui population in Sierra Espuña to have a high potentiality to expand; however, the mange episode which took place a few months after my surveys could not allow the population to grow as expected.…”

Section: Group Size and Compositionsupporting

confidence: 82%

“…Therefore, the presence of adult males inside the park borders would be reduced when a dispersion pattern, related to colonization of new lands and not to the chracteristic home ranges of males, predominates. Also, this dispersion might be promoted by a reduced variability of forage during winter (see Gray and Simpson, 1983). Obviously, from this first approach it is not possible to establish a general pattern; however, the tendencies observed are consistent with other field works carried out in Spain and USA.…”

Section: Group Size and Compositionsupporting

confidence: 77%

“…The Agencia Regional del Medio Ambiente y la Naturaleza in Murcia (Bigalke, unpubl.; this study), California (Barrett 1980) and Texas (Gray and Simpson 1983), USA. The percentage of individuals and sex class is given.…”

Section: Acknowledgementsmentioning

confidence: 74%

“…Habitat selection and group dynamics is thus exclusively reported from introduced American populations (e.g. Johnston, 1980;Gray and Simpson, 1982;1983).…”

Section: Introductionmentioning

confidence: 99%

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Cassinello

2000

Biodiversity and Conservation

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SummaryThis is the first attempt to investigate some characteristics of a Spanish population of Ammotragus lervia introduced in the wild back in 1970. Aside from a short account of the population history and proceeding up to present, a comparison between population data reported for the American wild populations and the Spanish one is provided. The surveys were conducted during breeding and rutting seasons. The majority of the herds sighted in Sierra Espuña were made up of 1-10 individuals, and adult males were more frequently observed during rutting. The group composition more commonly observed during breeding is that of adult females and subadults, i.e., nursery herds. It was obtained a different habitat use depending on the season and sex-age class. These results are consistent with the dynamics of ungulates and their reproductive phenology. Suggestions for future research and conservation-management concerns in the area are provided.

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Section: Group Size and Compositionsupporting

confidence: 82%

Section: Group Size and Compositionsupporting

confidence: 77%

Section: Acknowledgementsmentioning

confidence: 74%

“…Habitat selection and group dynamics is thus exclusively reported from introduced American populations (e.g. Johnston, 1980;Gray and Simpson, 1982;1983).…”

Section: Introductionmentioning

confidence: 99%

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Cassinello

2000

Biodiversity and Conservation

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“…The imbalance in the adult sex-ratio, however, may be due to other factors. Berducou and Besson (1982) in roe deer and Gray and Simpson (1983) in Barbary sheep suggested that the dispersal of males into suitable habitats causes greater mortality in the younger males than females. Another factor suggested by Schaller (1977), and Gray and Simpson (1983) is hunter preference for animals with large horns.…”

Section: Discussionmentioning

confidence: 97%

Influence of weather and population characteristics of free-ranging Spanish ibex in the Sierra de Cazorla y Segura and in the eastern Sierra Nevada

Escós¹,

Alados²

1991

Mammalia

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Genetic investigations and pedigree analysis in captive barbary sheep (Ammotragus lerviapallas 1777)

Schreiber¹,

Matern

1989

Zoo Biology

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The electrophoretic variation of blood proteins (hemoglobin, transferrin, adenylatekinase, and phosphoglucomutase) was studied in a population of 2 1 barbary sheep (Ammotrugus lemiu) living at Frankfurt Zoological Gardens. A polymorphism in hemoglobin was sufficient for pedigree analysis in most cases. It could be demonstrated that one female Barbary sheep cared for a lamb that genetically was not its own descendant. "Mismothering" has also been reported from domestic sheep. We suggest this to be critical when basing pedigree assumptions for stud-book purposes merely on behavioral evidence. Biochemical pedigree control is recommended for the genetic management of endangered social caprines during bottleneck phases of population recovery.

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Population Characteristics of Free-Ranging Barbary Sheep in Texas

Cited by 11 publications

References 6 publications

Untitled

Untitled

Influence of weather and population characteristics of free-ranging Spanish ibex in the Sierra de Cazorla y Segura and in the eastern Sierra Nevada

Genetic investigations and pedigree analysis in captive barbary sheep (Ammotragus lerviapallas 1777)

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