Saisons de reproduction des petits Ruminants dans le nord-est du Gabon, en fonction des variations des ressources alimentaires

  title={Saisons de reproduction des petits Ruminants dans le nord-est du Gabon, en fonction des variations des ressources alimentaires},
  author={G{\'e}rard Dubost and François Feer},
Les saisons de mise-bas et de conception de 7 especes de Ruminants ont ete determinees dans le secteur forestier du nord-est du Gabon par etude des variations du taux mensuel des naissances (observees directement ou calculees d'apres le poids des embryons), etabli en fonction du nombre de femelles gravides echantillonnees. Bien que toutes les especes se reproduisent toute l'annee, les 4 frugivores se distinguent nettement des 3 folivores-herbivores : les pics de naissances se produisent de… 

Figures from this paper

Saisons de reproduction chez trois Rongeurs et un Artiodactyle en Guyane française, en fonction des facteurs du milieu et de l’alimentation
Cette etude porte sur les saisons de reproduction de 4 especes forestieres de mammiferes terrestres guyanais comprenant 3 Rongeurs (Oryzomys capito velutinus, Proechimys cuvieri et Dasyprocta
L'exploitation durable de la faune dans un village forestier de la République Centrafricaine : une approche interdisciplinaire
Ce manuscrit presente les resultats d’une etude interdisciplinaire de l’exploitation de la faune a Banga, un village forestier Bofi de 300 habitants en Republique Centrafricaine. Dans la premiere
État des connaissances sur les céphalophes (genres Cephalophus et Philantomba) des forêts denses humides d’Afrique centrale (synthèse bibliographique)
Introduction. Cet article propose une synthèse des connaissances actuelles sur la classification, l’écologie et la biologie des céphalophes des forêts denses humides d’Afrique centrale (genres
Seasonal distribution of duikers in the different vegetation types of Taï National Park (Côte d’Ivoire)
Knowledge of species occurrence in a particular habitat and determining factors limiting its expansion are important in ecology and conservation planning. This study was carried out at Taï National
Seasonal Reproduction in Neotropical Rainforest Mammals.
French Guiana is considered to be a rainy region, despite a pronounced dry season, so even in this seemingly aseasonal region, the reproduction of mammals is mainly regulated by environmental factors at the time of birth.
What do we know about the life-history traits of widely hunted tropical mammals?
Abstract We synthesize information on parameters useful for managing the hunting of two common mammal species that are important for local people in the Neotropics and Africa: Cuniculus paca and
The influence of sex and reproductive state on diet preference in four terrestrial mammals of the French Guianan rain forest
  • O. Henry
  • Biology, Environmental Science
  • 1997
A comparative analysis of stomach contents showed that the diets of males and nonpregnant females were quite comparable, while significant differences occurred in gravid females (especially of the two smallest species).
Reproductive condition of Akodon montensis Thomas and Bolomys lasiurus (Lund) (Rodentia, Muridae) based on histological and histometric analyses of testes and external characteristics of gonads
It is suggested that the histological and histometric analysis of the gonads of males, together with the observations of external characteristics of gonad of males and females, may assist in identifying the reproductive condition of these animals.
Reproductive characteristics of the water chevrotain, Hyemoschus aquaticus
In terms of its reproduction, the water chevrotain (as well as the other Tragulids) is situated between these two taxa, which is in complete accordance with the results obtained in previous studies on its anatomy and behaviour.


Un aperçu sur l’écologie du chevrotain africain Hyemoschus aquaticus Ogilby, Artiodactyle Tragulidé
Dans cette region, les chevrotains ne rencontrant pas de barrieres terrestres, aquatiques ou ocologiques, on peut considorer qu'il s'agit d'une population unique, dans un rayon n'excedant ge'ne'ralement pas 30 km autour de cette localite.
Comparaison des régimes alimentaires de Cephalophus callipygus et C. dorsalis, Bovidés sympatriques de la fôret sempervirente africaine
The value of rhythm is discussed compared to other parameters involved in ecological separation of close coexisting species in the guild considered and the potential competition between these two sympatric species could be reduced by the contrasted pattern of space use which is more or less directly related to rhythm difference.
Results of quantitative sampling of small mammal populations at different grassland sites for a 3-yr period are compared to evaluate the energy requirements and con- sumption, according to trophic
Comparison of the Diets of Frugivorous Forest Ruminants of Gabon
Fruits constitute the major part of the stomach contents (70–80%) of seven species of sympatric forest ruminants of northeastern Gabon; there are large individual variations in the proportions of the
Climate and the food habits of ungulates on Galana Ranch
Feeding observations were made during 21 months on semi-domesticated buffalo, eland and oryx and on cattle using the feeding minutes technique and analyses of browse leaves show that during dry periods they are comparatively rich in protein when compared with grasses.
Estimates of reproductive parameters for free-rangingAteles geoffroyi
Six and a half years of data collected on the reproductive parameters of a population of free-rangingAteles geoffroyi show the following characteristics: seasonality of births; interbirth interval of
The size of African forest artiodactyls as determined by the vegetation structure
Non-ruminant artiodactyls (Suids), and the large rodent are apparently not subject to limitation by the vegetation density, and it appears that they are able to succeed in this niche because of etho-ecological features on the one hand, and anatomical ones on the other.
Bioenergetics of pregnancy and lactation in the bank vole
U samic nornicy rudej Clethrionomys glareolus określano zuzycie pokarmu i energie strawioną (asymilacje) w ciŅgu calego okresu ciązy i laktacji (18 + 18 dni).