The Ecology Of Reproduction In Wild And Domestic Mammals by R.m. SadlerThe Ecology Of Reproduction In Wild And Domestic Mammals by R.m. Sadler

The Ecology Of Reproduction In Wild And Domestic Mammals

byR.m. Sadler

Paperback | March 1, 2012

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49 about six months ... to well over a year. If there is only one part of the year that is favourable, such as spring and early summer in the temperate climates, then each species must make an evolutionary choice, so to speak, as to which parts of the reproductive cycle - conception, gestation, lactation or weanin- must be protected and which can come in less favourable times of the year. The rhesus and langur monkeys of northern India give birth during the time of year when temperatures are hottest and wells and tanks are often dry. However, gestation and the later months oflactation come during the monsoon season when food and water are abundant. In contrast the east African baboons give birth at the beginning of the small rains, and gestation and the late part of lactation occur during the six months dry season. Whether any pattern of relationship will be found to hold true for other species of primates is still not clear. It may be that a wide variety of patterns have evolved depending on the lengths of gestation and lactation and the particular ecological complex in which each species or even subspecies lives' (pages 503, 504).
Title:The Ecology Of Reproduction In Wild And Domestic MammalsFormat:PaperbackDimensions:336 pages, 23.5 × 15.5 × 0.02 inPublished:March 1, 2012Publisher:Springer-Verlag/Sci-Tech/TradeLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:9401165297

ISBN - 13:9789401165297

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Table of Contents

One Puberty.- 1. Ecological factors in the attainment of puberty: Introduction.- 2. The effects of light on the onset of puberty.- 3. The effects of temperature on the onset of puberty.- 4. The effects of nutrition on the onset of puberty.- 5. The effects of 'density' and social factors on the onset of puberty.- 6. Delayed puberty.- 7. Miscellaneous factors in the attainment of puberty.- Two The Breeding Season.- 8. Ecological factors and the breeding season: Introduction.- 9. The effects of light on the breeding season.- A. The pattern of seasonal variation of light at different latitudes.- B. Observations on non-experimental animals suggesting the effects of light.- C. The experimental alteration of light regimes and their effects on breeding.- D. The role of an inherent annual rhythm in the maintenance of the breeding season.- 10. The effects of temperature on the breeding season.- A. Introduction: the separation of climatic variables.- B. The presence of winter breeding.- C. The effects of temperature on breeding.- D. The effects of the experimental alteration of temperatures on breeding.- E. The effects of temperature and its experimental manipulation on male fertility.- F. The relationship of hibernation to the breeding season.- 11. The effects of rainfall and nutrition on the breeding season.- A. Introduction.- B. The effects of precipitation on breeding.- C. The effects of precipitation and/or nutrition on breeding.- D. The effects of nutrition alone on breeding.- E. Experimental investigations into the effects of nutrition on breeding.- F. The effects of nutrition on male fertility.- 12. The effects of minor ecological factors on the breeding season.- A. The effects of altitude.- B. The phenomenon of interrupted breeding seasons.- C. Migration and breeding.- D. Breeding as affected by lunar variations.- E. The role of the male in breeding.- F. The effects of lactation.- Three Pregnancy.- 13. The effects of temperature on pregnancy.- 14. The effects of nutrition on pregnancy.- 15. The variation in litter size.- A. Litter size and latitude.- B. Litter size and season.- C. Discussion.- 16. Delayed implantation.- Four Parturition, Lactation, and Immediate Post-Natal Survival of Young.- 17. The effects of weather from parturition to weaning.- 18. The effects of nutrition from parturition to weaning.- 19. The role of predation in survival to weaning.- 20. The effects of miscellaneous factors from parturition to weaning.- Five 'Density' and Social Factors in Breeding, Pregnancy and Survival to Weaning.- 21. Social factors in adult reproduction: Introduction.- 22. Social factors in adult reproduction in natural populations.- A. 'Non-cyclic' species.- B. 'Cyclic' species.- 23. Social factors in adult reproduction in experimental populations.- A. Combined populations.- B. Freely growing but confined populations.- C. Unconfined field populations.- 24. The relevance of observations from experimental populations to natural populations with regard to the role of social factors in adult reproduction.- Six Human Interference.- 25. The role of humans in the ecology of breeding in mammals.- Taxonomic Index.- General Index.