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- Deacon, Francois; Nel, Pierre J; Bercovitch, Fred B
- African zoology 2015 v.50 no.4 pp. 331-334
- Giraffa camelopardalis; breeding; calves; conception; cows; embryogenesis; lactation; ovulation; pregnancy
- ... Lactation boosts reproductive costs by depleting maternal condition and delaying subsequent conception. However, some evidence suggests that giraffes (Giraffa camelopardalis) have evolved a mechanism to minimise the time allocated to suckling-induced suppression of ovulation. Here, we show for the first time that wild giraffe cows are impregnated while nursing a young calf. We suggest that a trio ...
- Fouzari, Aicha; Samraoui, Farrah; Alfarhan, Ahmed H; Samraoui, Boudjéma
- African zoology 2015 v.50 no.4 pp. 299-305
- Alnus glutinosa; Aythya; attitudes and opinions; breeding; brood parasitism; clutch size; conservation areas; ducks; eggs; habitats; hatching; lakes; monitoring; nesting; nests; oviposition; population dynamics; predation; reproductive success; threatened species; vegetation cover; water birds; Algeria
- ... The status of waterbirds breeding in protected areas in North Africa needs constant monitoring because of a naturally fluctuating environment and permissive attitudes towards illegal activities likely to negatively affect population dynamics of threatened species. We present the results of a study conducted at a protected site, Lake Tonga, north-eastern Algeria, on a breeding population of Ferrugi ...