Nutrition and lactational control of fertility in red deer

Loudon, A. S. I.; McNeilly, Alan S.; Milne, J. A.

doi:10.1038/302145a0

Cited by 154 publications

(95 citation statements)

References 16 publications

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“…However, our results showed that body weight did not affect the timing of conception; good body condition does not necessarily lead to early conception in adult females. It is generally agreed that suckling stimuli prevent the initiation of reproductive activity in mammals (Tomogane 1999) and similar findings have been reported for red deer (Loudon et al 1983). Our results support this hypothesis that conception date correlates not with female body weight but with lactational status.…”

Section: Discussionsupporting

confidence: 91%

The effects of age, body weight and reproductive status on conception dates and gestation periods in captive sika deer

Matsuura

Satô²,

Suzuki

et al. 2004

Mammal Study

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Abstract. Variation in the parturition dates of captive sika deer (Cervus nippon) are explained by factors affecting conception date and gestation period. The timing of conception was related to lactational status, and all non-lactating females conceived before the median conception date. Young females were more likely to conceive after the median date of the conception than older females. We propose that females in poor body condition compensate for poor fetal growth with an extended gestation period after a severe winter. Estimates of conception dates from fetal age or parturition dates should consider these complicating factors.

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Section: Discussionsupporting

confidence: 91%

The effects of age, body weight and reproductive status on conception dates and gestation periods in captive sika deer

Matsuura

Satô²,

Suzuki

et al. 2004

Mammal Study

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show abstract

“…Details of the study subjects and the methodology used have been published elsewhere (GOMENDIO, 1989a(GOMENDIO, , b, 1990(GOMENDIO, , 1991. Among primates, as well as other mammals, the frequency of nipple stimulation has an important influence upon maternal reproduction and is thus a good measure of maternal investment (LouDON et al, 1983;SHORT, 1984;LEE, 1987;GOMENDIO, 1989a). A high frequency of nipple stimulation inhibits maternal reproduction in non-seasonally as well as seasonally breeding primates.…”

Section: Pletonmentioning

confidence: 99%

“…A high frequency of nipple stimulation inhibits maternal reproduction in non-seasonally as well as seasonally breeding primates. Mothers who suckle their infants frequently tend to be in poor physical condition and produce milk at slow rates (LOUDON et al, 1983;LUNN, 1988;GOMENDIO, 1989b;MENDL & PAUL, 1989). Infants respond to slow or insufficient milk yields by increasing suckling frequency in order to obtain adequate nourishment.…”

Section: Pletonmentioning

confidence: 99%

Sex-Biased Parent-Offspring Conflict

Redondo

Gomendio

Medina

1992

Behav

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In species showing sexual dimorphism, parents may obtain different fitness returns per unit of parental expenditure from sons and daughters. Under these circumstances, parents are expected to invest extra resources in offspring of the most profitable sex. However, it is unclear whether sex-biased expenditure is the result of selection acting on parents, their offspring, or both. Current parent-offspring conflict theory is used to investigate whether sex biases in parental expenditure should be accompanied by sex biases in parent-offspring conflict. It is suggested that, in general, greater conflict should be expected between parents and offspring of the favoured sex. Specifically, greater conflict is predicted among mother-son dyads than among mother-daughter dyads in most polygynous birds and mammals. Data on domestic sheep, as well as empirical evidence available for other species (mainly ungulates), lends support to the prediction. The prediction is further extended to cercopithecine primates, a group which lacks clear sex-biases in parental investment. In this case, differences in fitness returns per unit of parental expenditure between the daughters of dominant and subordinate mothers are positively related to differences in the extent of mother-daughter conflict. The results from this study highlight the important role that selective pressures acting on the offspring phenotype may have played in the evolution of sex-biased patterns of parental investment.

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“…Empirical data show that lactation imposes physiological stress on mothers (Kö nig et al 1988;Iverson et al 1993;Lovelady et al 1993) and may reduce their survival and future reproductive success (Loudon et al 1983;Clutton-Brock et al 1989). Further, the quantity and quality of milk has a strong impact on the survival prospects and growth of juveniles (Loudon 1985;Iverson et al 1993;Sams et al 1996).…”

Section: Introductionmentioning

confidence: 99%

Kin selection may influence fostering behaviour in Antarctic fur seals (Arctocephalus gazella)

Gemmell

2003

Proc. R. Soc. Lond. B

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Fostering confers obvious advantages to the offspring but is seemingly costly to the caregiver. Such behaviour is particularly paradoxical in seals where the energetic investment in milk is very high and has led to the suggestion that this behaviour may have evolved through either kin selection or reciprocity. We used a combination of genetic and behavioural data to investigate whether kin selection plays a role in the fostering behaviour observed in a well-studied population of Antarctic fur seals (Arctocephalus gazella) from Bird Island, South Georgia. Genotypic data from eight highly polymorphic microsatellite markers were used to estimate relatedness among mother-pup pairs, foster mother-pup pairs and the total population. Mean relatedness was found to be significantly higher for foster mother-pup pairs than that observed for the total population, suggesting that kin selection could have a role in the maintenance of fostering behaviour in this species.

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Nutrition and lactational control of fertility in red deer

Cited by 154 publications

References 16 publications

The effects of age, body weight and reproductive status on conception dates and gestation periods in captive sika deer

The effects of age, body weight and reproductive status on conception dates and gestation periods in captive sika deer

Sex-Biased Parent-Offspring Conflict

Kin selection may influence fostering behaviour in Antarctic fur seals (Arctocephalus gazella)

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