Offspring desertion and parental care in the Whiskered TernChlidonias hybrida

Ibis ◽  
2017 ◽  
Vol 159 (4) ◽  
pp. 860-872 ◽  
Author(s):  
Mateusz Ledwoń ◽  
Grzegorz Neubauer
Keyword(s):  
Parental Care ◽  
Offspring Desertion

scholarly journals Female offspring desertion and male-only care increase with natural and experimental increase in food abundance

2009 ◽  
Vol 276 (1662) ◽  
pp. 1713-1721 ◽  
Author(s):  
Katrine Eldegard ◽  
Geir A Sonerud
Keyword(s):  
Parental Care ◽  
Male Partner ◽  
Ecological Factors ◽  
Female Offspring ◽  
Food Abundance ◽  
Food Supplementation ◽  
Aegolius Funereus ◽  
Important Benefit ◽  
Radio Transmitters ◽  
Offspring Desertion

In species with biparental care, one parent may escape the costs of parental care by deserting and leaving the partner to care for the offspring alone. A number of theoretical papers have suggested a link between uniparental offspring desertion and ecological factors, but empirical evidence is scarce. We investigated the relationship between uniparental desertion and food abundance in a natural population of Tengmalm's owl Aegolius funereus , both by means of a 5-year observational study and a 1-year experimental study. Parents and offspring were fitted with radio-transmitters in order to reveal the parental care strategy (i.e. care or desert) of individual parents, and to keep track of the broods post-fledging. We found that 70 per cent of the females from non-experimental nests deserted, while their partner continued to care for their joint offspring alone. Desertion rate was positively related to natural prey population densities and body reserves of the male partner. In response to food supplementation, a larger proportion of the females deserted, and females deserted the offspring at an earlier age. Offspring survival during the post-fledging period tended to be lower in deserted than in non-deserted broods. We argue that the most important benefit of deserting may be remating (sequential polyandry).

Ageing: Parental Care and Reproduction Strategies

1995 ◽  
Vol 5 (12) ◽  
pp. 1689-1695 ◽  
Author(s):  
John Thoms ◽  
Peter Donahue ◽  
Doug Hunter ◽  
Naeem Jan
Keyword(s):  
Parental Care ◽  
Reproduction Strategies

Experimentally increased costs of parental care are shunted to offspring in species with extended care

2019 ◽  
Author(s):  
Gretchen F. Wagner ◽  
Emeline Mourocq ◽  
Michael Griesser
Keyword(s):  
Life History ◽  
Parental Care ◽  
Total Duration ◽  
Bird Species ◽  
Life History Strategy ◽  
Experimental Treatment ◽  
Cost Of Care ◽  
Adult Survival ◽  
Supporting Evidence ◽  
Trade Offs

Biparental care systems are a valuable model to examine conflict, cooperation, and coordination between unrelated individuals, as the product of the interactions between the parents influences the fitness of both individuals. A common experimental technique for testing coordinated responses to changes in the costs of parental care is to temporarily handicap one parent, inducing a higher cost of providing care. However, dissimilarity in experimental designs of these studies has hindered interspecific comparisons of the patterns of cost distribution between parents and offspring. Here we apply a comparative experimental approach by handicapping a parent at nests of five bird species using the same experimental treatment. In some species, a decrease in care by a handicapped parent was compensated by its partner, while in others the increased costs of care were shunted to the offspring. Parental responses to an increased cost of care primarily depended on the total duration of care that offspring require. However, life history pace (i.e., adult survival and fecundity) did not influence parental decisions when faced with a higher cost of caring. Our study highlights that a greater attention to intergenerational trade-offs is warranted, particularly in species with a large burden of parental care. Moreover, we demonstrate that parental care decisions may be weighed more against physiological workload constraints than against future prospects of reproduction, supporting evidence that avian species may devote comparable amounts of energy into survival, regardless of life history strategy.

A family with oedipal dynamics

2020 ◽  
Vol 3 (1) ◽  
pp. 111-118
Author(s):  
Li Yanling ◽  
David E. Scharff
Keyword(s):  
Family Therapy ◽  
Parental Care ◽  
Young Woman ◽  
Discussion Group ◽  
Entire Group ◽  
Group Leaders ◽  
Couple And Family Therapy ◽  
Supervision Group ◽  
The Way

The following case presents the way that overtly oedipal identification in a young woman covered failure in early parental care and discontent between her parents. The case was presented by Li Yanling to her supervision group, and the commentary and elaboration have been gathered from comments from the entire group of advanced supervisees, all of whom were discussion group leaders in the Beijing Continuous Program in Psychoanalytic Couple and Family Therapy.

FORMATION OF ORPHANAGES IN THE FERGANA VALLEY

2020 ◽  
Vol 12 (3) ◽  
pp. 67-74
Author(s):  
Nodira Safikhodzhaeva ◽  
Keyword(s):  
Parental Care ◽  
The State ◽  
State Protection

This article discusses the establishment of orphanages in Ferghana Yalley, the state protection of orphans and children deprived of parental care, and the conditions created for them

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