Social organization and demography of reintroduced Dorcas gazelle (Gazella dorcas neglecta) in North Ferlo Fauna Reserve, Senegal
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Teresa Abáigar
, Mar Cano
Abstract
As part of a reintroduction project in Senegal, 23 (9.14) captive-born Dorcas gazelles were released into a 440-ha fenced-in area in Katané (North Ferlo Fauna Reserve, Senegal) in March 2009. After 4 years of seasonal monitoring, the gazelles showed progressive adaptation of their behavior to semi-wild living conditions. Breeding gradually became seasonal, and 53.8% of births occurred during the rainy season (July to September). Gazelle group size and composition varied seasonally. Groups were smallest during the dry season (2.29±1.72) and largest at the beginning of the rainy season (4.18±2.73). Social group composition also showed seasonal variation. There were always a larger proportion of solitary males than solitary females and mixed couples were observed throughout the year. All-male groups were found the least. The proportion of adult females with subadults and juveniles decreased during the early rainy season, while mixed adults, subadults and juveniles groups increased during this period. The mortality rate during the first weeks after release was 13%. Four years of monitoring after release, demographic traits of this released population reveal its adaptation from captive to natural-living conditions.
Acknowledgments
The authors thank the staff of the Direction of National Parks in Dakar as well as in Ranérou and Katané for providing technical and field assistance. This study was funded by The Spanish National Research Council (CSIC, Economic and Innovation Ministry), the Barcelona Zoo (BSMSA, Barcelona Municipality) and the Direction of National Parks of Senegal (Environment Ministry).
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©2016 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original Studies
- The mammals of Mt. Amuyao: a richly endemic fauna in the Central Cordillera of northern Luzon Island, Philippines
- Social organization and demography of reintroduced Dorcas gazelle (Gazella dorcas neglecta) in North Ferlo Fauna Reserve, Senegal
- Reproductive characteristics of the water chevrotain, Hyemoschus aquaticus
- First data on the presence and diet of common genet (Genetta genetta, Linnaeus 1758) in the Ebro Delta (NE Iberian Peninsula)
- Band size, activity pattern and occupancy of the coati Nasua narica (Carnivora, Procyonidae) in the Southeastern Mexican rainforest
- Partial support for the classical ring species hypothesis in the Chaerephon pumilus species complex (Chiroptera: Molossidae) from southeastern Africa and western Indian Ocean islands
- Recording at water bodies increases the efficiency of a survey of temperate bats with stationary, automated detectors
- Effect of wheat (Triticum aestivum L.) seed color and hardness genes on the consumption preference of the house mouse (Mus musculus L.)
- Short Notes
- New records of Isothrix (Wagner 1845) (Rodentia: Echimyidae) from Ecuador
- Notes on the distribution of the genus Andalgalomys (Rodentia, Cricetidae), with the first record of A. pearsoni (Myers 1978) from Argentina
- Reviewer acknowledgement Mammalia volume 80 (2016)
Artikel in diesem Heft
- Frontmatter
- Original Studies
- The mammals of Mt. Amuyao: a richly endemic fauna in the Central Cordillera of northern Luzon Island, Philippines
- Social organization and demography of reintroduced Dorcas gazelle (Gazella dorcas neglecta) in North Ferlo Fauna Reserve, Senegal
- Reproductive characteristics of the water chevrotain, Hyemoschus aquaticus
- First data on the presence and diet of common genet (Genetta genetta, Linnaeus 1758) in the Ebro Delta (NE Iberian Peninsula)
- Band size, activity pattern and occupancy of the coati Nasua narica (Carnivora, Procyonidae) in the Southeastern Mexican rainforest
- Partial support for the classical ring species hypothesis in the Chaerephon pumilus species complex (Chiroptera: Molossidae) from southeastern Africa and western Indian Ocean islands
- Recording at water bodies increases the efficiency of a survey of temperate bats with stationary, automated detectors
- Effect of wheat (Triticum aestivum L.) seed color and hardness genes on the consumption preference of the house mouse (Mus musculus L.)
- Short Notes
- New records of Isothrix (Wagner 1845) (Rodentia: Echimyidae) from Ecuador
- Notes on the distribution of the genus Andalgalomys (Rodentia, Cricetidae), with the first record of A. pearsoni (Myers 1978) from Argentina
- Reviewer acknowledgement Mammalia volume 80 (2016)