scholarly journals Coordination in parental effort decreases with age in a long‐lived seabird

Oikos ◽  
2020 ◽  
Vol 129 (12) ◽  
pp. 1763-1772
Author(s):  
Samantha C. Patrick ◽  
Alexandre Corbeau ◽  
Denis Réale ◽  
Henri Weimerskirch
Keyword(s):  
Parental Effort

Natural Variation in a Testosterone-Mediated Trade-off between Mating Effort and Parental Effort

2007 ◽  
Vol 170 (6) ◽  
pp. 864
Author(s):  
McGlothlin ◽  
Jodie M. Jawor ◽  
Ketterson
Keyword(s):  
Natural Variation ◽  
Mating Effort ◽  
Parental Effort ◽  
Trade Off

scholarly journals Tri-axial accelerometry shows differences in energy expenditure and parental effort throughout the breeding season in long-lived raptors

2021 ◽  
Author(s):  
Pascual LÓPEZ-LÓPEZ ◽  
Arturo M PERONA ◽  
Olga EGEA-CASAS ◽  
Jon ETXEBARRIA MORANT ◽  
Vicente URIOS
Keyword(s):  
Energy Expenditure ◽  
Parental Care ◽  
Breeding Season ◽  
Video Recording ◽  
Experimental Manipulation ◽  
Biparental Care ◽  
Breeding Ecology ◽  
Parental Effort ◽  
Ecological Data ◽  
Movement Trajectories

Abstract Cutting-edge technologies are extremely useful to develop new workflows in studying ecological data, particularly to understand animal behaviour and movement trajectories at the individual level. Although parental care is a well-studied phenomenon, most studies have been focused on direct observational or video recording data, as well as experimental manipulation. Therefore, what happens out of our sight still remains unknown. Using high-frequency GPS/GSM dataloggers and tri-axial accelerometers we monitored 25 Bonelli’s eagles (Aquila fasciata) during the breeding season to understand parental activities from a broader perspective. We used recursive data, measured as number of visits and residence time, to reveal nest attendance patterns of biparental care with role specialization between sexes. Accelerometry data interpreted as the Overall Dynamic Body Acceleration, a proxy of energy expenditure, showed strong differences in parental effort throughout the breeding season and between sexes. Thereby, males increased substantially their energetic requirements, due to the increased workload, while females spent most of the time on the nest. Furthermore, during critical phases of the breeding season, a low percentage of suitable hunting spots in eagles’ territories led them to increase their ranging behaviour in order to find food, with important consequences in energy consumption and mortality risk. Our results highlight the crucial role of males in raptor species exhibiting biparental care. Finally, we exemplify how biologging technologies are an adequate and objective method to study parental care in raptors as well as to get deeper insight into breeding ecology of birds in general.

Elevating perceived predation risk modifies the relationship between parental effort and song complexity in the song sparrowMelospiza melodia

2015 ◽  
Vol 47 (1) ◽  
pp. 57-68 ◽  
Author(s):  
Melissa L. Grunst ◽  
John T. Rotenberry ◽  
Andrea S. Grunst
Keyword(s):  
Predation Risk ◽  
Parental Effort ◽  
Song Complexity ◽  
The Relationship ◽  
Perceived Predation Risk

Sex, Coalitions, and Politics in Preindustrial Societies

1992 ◽  
Vol 11 (1) ◽  
pp. 63-80 ◽  
Author(s):  
Bobbi S. Low
Keyword(s):  
Sex Differences ◽  
Cross Cultural ◽  
Resource Acquisition ◽  
Political Activity ◽  
Mating Effort ◽  
Parental Effort ◽  
Male And Female

Broadly defined, political activity normally involves some form of coalition, usually centering upon resource acquisition, and is not restricted to humans. Male and female mammals appear to have evolved to seek and use resources differently—males to get mates (mating effort) and females to raise healthy, successful offspring (parental effort). Because the return curves for these two types of effort differ in shape, several predictions follow about sex differences in political activity. These predictions are tested using the 93 odd-numbered societies of the Standard Cross-Cultural Sample. Results offer insights into current patterns of male and female political activity in Western societies.

scholarly journals An Experimental study of reduced parental effort and future reproductive success in the puffin, Fratercula arctica

1998 ◽  
Vol 67 (1) ◽  
pp. 25-40 ◽  
Author(s):  
Christine V. Wernham ◽  
David M. Bryant
Keyword(s):  
Experimental Study ◽  
Reproductive Success ◽  
Parental Effort ◽  
Fratercula Arctica

scholarly journals Male parental investment reflects the level of partner contributions and brood value in tree swallows

2017 ◽  
Author(s):  
Ádám Z. Lendvai ◽  
Çağlar Akçay ◽  
Mark Stanback ◽  
Mark F. Haussmann ◽  
Ignacio T. Moore ◽  
...  
Keyword(s):  
Parental Care ◽  
Interesting Case ◽  
Temporary Increase ◽  
Southern Population ◽  
Tree Swallows ◽  
Parental Effort ◽  
Northern Population ◽  
Nestling Begging ◽  
Two Populations ◽  
Partial Compensation

AbstractBiparental care presents an interesting case of cooperation and conflict between unrelated individuals. Several models have been proposed to explain how parents should respond to changes in each other’s parental care to maximize their own fitness, predicting no change, partial compensation, or matching effort as a response. Here, we present an experiment in tree swallows (Tachycineta bicolor) in which we increased the parental care of females by presenting them, but not their mates, with additional nestling begging calls using automated playbacks. We performed this experiment in two populations differing in future breeding opportunities and thus the intensity of conflict over current parental care. We found that in response to a temporary increase in female parental effort, males in the northern population with lower sexual conflict matched the increased effort, whereas males in the southern population did not. We also found that increases in parental care during playbacks were driven by the females (i.e., females initiated the increased effort and their mates followed them) in the northern population but not the southern population. These results support the idea that with incomplete information about the brood value and need, cues or signals from the partner might become important in coordinating parental care.

Co-evolution of Traits

2020 ◽  
pp. 111-140
Author(s):  
John M. McNamara ◽  
Olof Leimar
Keyword(s):  
Selection Criteria ◽  
Evolutionary Stability ◽  
Disruptive Selection ◽  
Prosocial Behaviour ◽  
Parental Effort ◽  
Social Sensitivity ◽  
Parental Ability

Often traits interact, so that considering the evolution of each in isolation gives too limited an account. As is demonstrated in this chapter, it is then crucial to allow for the co-evolution of traits when analysing evolutionary stability. In particular this is important when there there is disruptive selection. Criteria for stability are presented and are applied to a variety of systems. It is shown that role asymmetries can lead to different predictions compared with the analogous situation with the same payoffs but without such asymmetries. Disruptive selection can lead to the evolution of anisogamy. When parental ability and parental effort co-evolve, disruptive selection can lead to one sex evolving to be better at care and doing most of the care. Furthermore, disruptive selection can lead to multiple ESSs, as when prosocial behaviour and the propensity to disperse from the natal site co-evolve. As is shown, disruptive forces can also act when there is learning, leading to specialization. This chapter sets the scene for the chapter that follows, where the level of cooperation shown by individuals co-evolves with choosiness and social sensitivity.

Energy Expenditure in Reproductive Effort of Male and Female Killdeer (Charadrius vociferus)

The Auk ◽  
1988 ◽  
Vol 105 (3) ◽  
pp. 553-564 ◽  
Author(s):  
Dianne H. Brunton
Keyword(s):  
Reproductive Success ◽  
Energy Expenditure ◽  
Parental Care ◽  
Breeding Season ◽  
Reproductive Effort ◽  
Mating Effort ◽  
Parental Effort ◽  
Nest Failure ◽  
Male And Female ◽  
Charadrius Vociferus

Abstract The reproductive investment strategies of the sexes during the breeding season are detailed for Killdeer (Charadrius vociferus), a monogamous plover. I measured the energy investments of the sexes in reproductive, mating, and parental effort. As predicted, males expend more mating effort than females; however, the sexes expend equal amounts of parental effort. Total energy expenditure in reproductive effort (mating and parental effort) during a successful nesting attempt was also equal for the sexes. However, early parental effort expenditures by females, early mating effort expenditures by males, and high rates of nest failure combine to result in female reproductive energy expenditures being significantly higher over the breeding season. This suggests that energy expenditure alone is not adequate for accurate comparisons of the relative investments of the sexes. Studies investigating male and female investments need to consider the degree and pattern of nest failures along with patterns of energy expenditure. The advantages to male and female Killdeer of sharing parental care is demonstrated using adult removal experiments. In general, a deserted parent expends more energy in parental effort than a bi-parental parent and has significantly lower reproductive success. However, males are able to hatch chicks, whereas females lose or abandon their nests within a few days of mate removal. Thus, monogamy in Killdeer appears to result from high nest failure rates, the necessity of two parents for any reproductive success, and the generalizable nature of Killdeer parental care.

Evolutionary Consequences of a Trade-off Between Parental Effort and Mating Effort

1996 ◽  
Vol 183 (2) ◽  
pp. 139-158 ◽  
Author(s):  
Kevin J. Dawson
Keyword(s):  
Mating Effort ◽  
Parental Effort ◽  
Trade Off ◽  
Evolutionary Consequences

An Evolutionary Analysis of Variation in Parental Effort: Determinants and Assessment

Parenting ◽  
2012 ◽  
Vol 12 (2-3) ◽  
pp. 94-104 ◽  
Author(s):  
Tomás Cabeza De Baca ◽  
Aurelio José Figueredo ◽  
Bruce J. Ellis
Keyword(s):  
Evolutionary Analysis ◽  
Parental Effort ◽  
Analysis Of Variation
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