PATERNAL GENETIC EFFECTS ON OFFSPRING FITNESS ARE CONTEXT DEPENDENT WITHIN THE EXTRAPAIR MATING SYSTEM OF A SOCIALLY MONOGAMOUS PASSERINE

Evolution ◽  
2005 ◽  
Vol 59 (3) ◽  
pp. 645 ◽  
Author(s):  
Tim Schmoll ◽  
Verena Dietrich ◽  
Wolfgang Winkel ◽  
Jörg T. Epplen ◽  
Frank Schurr ◽  
...  
Keyword(s):  
Mating System ◽  
Genetic Effects ◽  
Offspring Fitness ◽  
Extrapair Mating ◽  
Socially Monogamous ◽  
Context Dependent

PATERNAL GENETIC EFFECTS ON OFFSPRING FITNESS ARE CONTEXT DEPENDENT: WITHIN THE EXTRAPAIR MATING SYSTEM OF A SOCIALLY: MONOGAMOUS PASSERINE

Evolution ◽  
2005 ◽  
Vol 59 (3) ◽  
pp. 645-657 ◽  
Author(s):  
Tim Schmoll ◽  
Verena Dietrich ◽  
Wolfgang Winkel ◽  
Jörg T. Epplen ◽  
Frank Schurr ◽  
...  
Keyword(s):  
Mating System ◽  
Genetic Effects ◽  
Offspring Fitness ◽  
Extrapair Mating ◽  
Socially Monogamous ◽  
Context Dependent

scholarly journals Extrapair mating between relatives in the barn swallow: a role for kin selection?

2005 ◽  
Vol 1 (4) ◽  
pp. 389-392 ◽  
Author(s):  
Oddmund Kleven ◽  
Frode Jacobsen ◽  
Raleigh J Robertson ◽  
Jan T Lifjeld
Keyword(s):  
Kin Selection ◽  
Barn Swallow ◽  
Random Choice ◽  
Extrapair Mating ◽  
Female Promiscuity ◽  
Social Partners ◽  
Socially Monogamous ◽  
Insurance Mechanism ◽  
Genetic Parents ◽  
New Hypothesis

Why do females of many species mate with more than one male? One of the main hypotheses suggests that female promiscuity is an insurance mechanism against the potential detrimental effects of inbreeding. Accordingly, females should preferably mate with less related males in multiple or extrapair mating. Here we analyse paternity, relatedness among mating partners, and relatedness between parents and offspring, in the socially monogamous North American barn swallow ( Hirundo rustica erythrogaster ). In contrast to the inbreeding avoidance hypothesis, we found that extrapair mating partners were more related than expected by random choice, and tended to be more related than social partners. Furthermore, extrapair mating resulted in genetic parents being more related to their extrapair young than to their withinpair young. We propose a new hypothesis for extrapair mating based on kin selection theory as a possible explanation to these findings.

The relative role of invariant and context dependent genetic effects in predicting cardiovascular disease

2000 ◽  
Vol 151 (1) ◽  
pp. 235
Author(s):  
C. Sing ◽  
K. Zerba ◽  
M. Nelson ◽  
S. Lussier-Cacan ◽  
S. Kardia
Keyword(s):  
Cardiovascular Disease ◽  
Genetic Effects ◽  
Relative Role ◽  
Context Dependent

scholarly journals Parallel Evolution of Bower-Building Behavior in Two Groups of Bowerbirds Suggested by Phylogenomics

2020 ◽  
Vol 69 (5) ◽  
pp. 820-829
Author(s):  
Per G P Ericson ◽  
Martin Irestedt ◽  
Johan A A Nylander ◽  
Les Christidis ◽  
Leo Joseph ◽  
...  
Keyword(s):  
Mating System ◽  
Life History Traits ◽  
Parallel Evolution ◽  
Forest Environment ◽  
The Family ◽  
Socially Monogamous ◽  
Male Display ◽  
Building Behavior ◽  
Ancestral Character Reconstruction ◽  
Polygynous Mating System

Abstract The bowerbirds in New Guinea and Australia include species that build the largest and perhaps most elaborately decorated constructions outside of humans. The males use these courtship bowers, along with their displays, to attract females. In these species, the mating system is polygynous and the females alone incubate and feed the nestlings. The bowerbirds also include 10 species of the socially monogamous catbirds in which the male participates in most aspects of raising the young. How the bower-building behavior evolved has remained poorly understood, as no comprehensive phylogeny exists for the family. It has been assumed that the monogamous catbird clade is sister to all polygynous species. We here test this hypothesis using a newly developed pipeline for obtaining homologous alignments of thousands of exonic and intronic regions from genomic data to build a phylogeny. Our well-supported species tree shows that the polygynous, bower-building species are not monophyletic. The result suggests either that bower-building behavior is an ancestral condition in the family that was secondarily lost in the catbirds, or that it has arisen in parallel in two lineages of bowerbirds. We favor the latter hypothesis based on an ancestral character reconstruction showing that polygyny but not bower-building is ancestral in bowerbirds, and on the observation that Scenopoeetes dentirostris, the sister species to one of the bower-building clades, does not build a proper bower but constructs a court for male display. This species is also sexually monomorphic in plumage despite having a polygynous mating system. We argue that the relatively stable tropical and subtropical forest environment in combination with low predator pressure and rich food access (mostly fruit) facilitated the evolution of these unique life-history traits. [Adaptive radiation; bowerbirds; mating system, sexual selection; whole genome sequencing.]

scholarly journals Genetic Effects at Pleiotropic Loci Are Context-Dependent with Consequences for the Maintenance of Genetic Variation in Populations

PLoS Genetics ◽  
2011 ◽  
Vol 7 (9) ◽  
pp. e1002256 ◽  
Author(s):  
Heather A. Lawson ◽  
Janet E. Cady ◽  
Charlyn Partridge ◽  
Jason B. Wolf ◽  
Clay F. Semenkovich ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Genetic Effects ◽  
Context Dependent

scholarly journals Harvesting of males delays female breeding in a socially monogamous mammal; the beaver

2006 ◽  
Vol 3 (1) ◽  
pp. 107-109 ◽  
Author(s):  
Howard Parker ◽  
Frank Rosell ◽  
Atle Mysterud
Keyword(s):  
Mating System ◽  
Reproductive Cycle ◽  
Negative Impact ◽  
Sex Ratios ◽  
Castor Fiber ◽  
Adult Males ◽  
Timing Of Reproduction ◽  
Pregnant Females ◽  
Socially Monogamous

Human exploitation may skew adult sex ratios in vertebrate populations to the extent that males become limiting for normal reproduction. In polygynous ungulates, females delay breeding in heavily harvested populations, but effects are often fairly small. We would expect a stronger effect of male harvesting in species with a monogamous mating system, but no such study has been performed. We analysed the effect of harvesting males on the timing of reproduction in the obligate monogamous beaver ( Castor fiber ). We found a negative impact of harvesting of adult males on the timing of parturition in female beavers. The proportion of normal breeders sank from over 80%, when no males had been shot in the territories of pregnant females, to under 20%, when three males had been shot. Harvesting of males in monogamous mammals can apparently affect their normal reproductive cycle.

scholarly journals An atypical mating system in a neotropical manakin

2020 ◽  
Vol 7 (1) ◽  
pp. 191548 ◽  
Author(s):  
Milene G. Gaiotti ◽  
Michael S. Webster ◽  
Regina H. Macedo
Keyword(s):  
Sexual Selection ◽  
Mating System ◽  
Mating Systems ◽  
Evolutionary Development ◽  
Selective Pressures ◽  
Exclusive Territories ◽  
Monogamous Species ◽  
Socially Monogamous ◽  
Mixed Paternity ◽  
Close Relatives

Most of the diversity in the mating systems of birds and other animals comes at higher taxonomic levels, such as across orders. Although divergent selective pressures should lead to animal mating systems that diverge sharply from those of close relatives, opportunities to examine the importance of such processes are scarce. We addressed this issue using the Araripe manakin ( Antilophia bokermanni ), a species endemic to a forest enclave surrounded by xeric shrublands in Brazil. Most manakins exhibit polygynous lekking mating systems that lack territoriality but exhibit strong sexual selection. In sharp contrast, we found that male Araripe manakins defended exclusive territories, and females nested within male territories. However, territoriality and offspring paternity were dissociated: males sired only 7% of nestlings from the nests within their territories and non-territorial males sired numerous nestlings. Moreover, female polyandry was widespread, with most broods exhibiting mixed paternity. Apparently, territories in this species function differently from both lekking arenas and resource-based territories of socially monogamous species. The unexpected territoriality of Araripe manakins and its dissociation from paternity is a unique evolutionary development within the manakin clade. Collectively, our findings underscore how divergences in mating systems might evolve based on selective pressures from novel environmental contexts.

scholarly journals No evidence for increased fitness of offspring from multigenerational effects of parental size or natal carcass size in the burying beetle Nicrophorus marginatus

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0253885
Author(s):  
Ethan P. Damron ◽  
Ashlee N. Smith Momcilovitch ◽  
Dane Jo ◽  
Mark C. Belk
Keyword(s):  
Body Size ◽  
Maternal Effects ◽  
Genetic Effects ◽  
Burying Beetle ◽  
Lifetime Fitness ◽  
Offspring Fitness ◽  
Lifetime Number ◽  
Parental Phenotype ◽  
Multigenerational Effects ◽  
Nicrophorus Marginatus

Multigenerational effects (often called maternal effects) are components of the offspring phenotype that result from the parental phenotype and the parental environment as opposed to heritable genetic effects. Multigenerational effects are widespread in nature and are often studied because of their potentially important effects on offspring traits. Although multigenerational effects are commonly observed, few studies have addressed whether they affect offspring fitness. In this study we assess the effect of potential multigenerational effects of parental body size and natal carcass size on lifetime fitness in the burying beetle, Nicrophorus marginatus (Coleoptera; Silphidae). Lifespan, total number of offspring, and number of offspring in the first reproductive bout were not significantly related to parental body size or natal carcass size. However, current carcass size used for reproduction was a significant predictor for lifetime number of offspring and number of offspring in the first brood. We find no evidence that multigenerational effects from larger parents or larger natal carcasses contribute to increased fitness of offspring.

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