Seasonal influence on sexual hormones and semen plasma parameters of Arabian sand gazelles (Gazalla subgutrosa marica) in Saudi Arabia

Alkahtane, Abdullah A.

doi:10.5897/ajb2014.114131

Cited by 1 publication

(2 citation statements)

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“…A seasonal anestrus have been found in North America captive Addra gazelle although births occurred throughout the year [ 15 ]. On the other hand, testosterone levels increased in August preceding this rise in conception rates, as was found in Arabian sand gazelle ( Gazella subgutrosa marica ) [ 29 ]. It could be proposed that behavior plays an important role at this stage for conception rates and more aggressive activities are displayed by males in response to higher testosterone levels that could be associated with higher mating rate.…”

Section: Discussionmentioning

confidence: 81%

“…Seasonality of male reproduction has been studied in some wild bovids, revealing both species-specific differences and variations between captive and free-living populations [ 19 , 20 , 21 , 22 , 23 ]. In addition, many bovids show variation of semen quality, testicular function and/or testosterone throughout the year [ 16 , 19 , 21 , 24 , 25 , 26 , 27 , 28 , 29 ]. Sperm parameters have been characterized for these three species of gazelle kept at EEZA [ 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Season and Social Environment on Semen Quality and Endocrine Profiles of Three Endangered Ungulates (Gazella cuvieri, G. dorcas and Nanger dama)

Arregui

Garde

Espeso

et al. 2021

Animals

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Knowledge of factors affecting semen quality could be of great importance for the collection and preservation of semen from threatened animals. To assess the effect of seasonality, sperm parameters and testosterone levels were examined throughout the year and compared with the distribution of conceptions. Cuvier’s gazelle showed higher sperm quantity in April, coinciding with one peak of conceptions. In dorcas gazelle, sperm parameters showed a drop in October. However, percentage of conceptions increased during that month. In Mohor gazelle, sperm quality was best in April and August, in agreement with higher conception rates and high testosterone levels. Percentage of conceptions was correlated with photoperiod and rainfall in Cuvier’s gazelle and with temperature in Mohor gazelle. To assess the effect of social environment, semen quality, testosterone and cortisol levels were quantified in males housed alone, in bachelor groups or with females. No differences were seen in Cuvier’s and Mohor gazelles’ semen traits, whereas dorcas males housed with females showed lower semen quality than males kept alone or with other males. Overall, ejaculate quality is influenced by seasonal factors in the three gazelle species, while social factors only appear to affect that of dorcas gazelle.

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Section: Discussionmentioning

confidence: 81%