Journal of Evolutionary Biology最新文献_第2页

Chickadees sing different songs in sympatry versus allopatry. 雏鸟在同栖和异栖时唱不同的歌。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2024-10-09 DOI: 10.1093/jeb/voae114

Olivia Taylor, Kathryn Grabenstein, Angela Theodosopoulos, Harriet Leeson, Scott Taylor, Carrie Branch

{"title":"Chickadees sing different songs in sympatry versus allopatry.","authors":"Olivia Taylor, Kathryn Grabenstein, Angela Theodosopoulos, Harriet Leeson, Scott Taylor, Carrie Branch","doi":"10.1093/jeb/voae114","DOIUrl":"https://doi.org/10.1093/jeb/voae114","url":null,"abstract":"Character displacement theory predicts that closely-related co-occurring species should diverge in relevant traits to reduce costly interspecific interactions such as competition or hybridization. While many studies document character shifts in sympatry, few provide corresponding evidence that these shifts are driven by the costs of co-occurrence. Black-capped (Poecile atricapillus) and mountain chickadees (P. gambeli) are closely-related, ecologically similar, and broadly distributed songbirds with both allopatric and sympatric populations. In sympatry, both species appear to suffer costs of their co-occurrence: 1) both species are in worse body condition compared to allopatry and 2) hybridization sometimes yields sterile offspring. Here, we explored character displacement in the songs of black-capped and mountain chickadees by characterizing variation in male songs from sympatric and allopatric populations. We found that mountain chickadees sing differently in sympatry versus allopatry. Specifically, they produced more notes per song, were more likely to include an extra introductory note, and produced a smaller glissando in their first notes compared to all other populations. Combined with previous research on social dominance and maladaptive hybridization between black-capped and mountain chickadees, we posit that differences in sympatric mountain chickadee song are population-wide shifts to reduce aggression from dominant black-capped chickadees and/or prevent maladaptive hybridization.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-fat and high-sugar diets induce rapid adaptations of fat storage in the house fly Musca domestica L. 高脂肪和高糖饮食诱导家蝇快速适应脂肪储存

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2024-10-07 DOI: 10.1093/jeb/voae122

F Francesco Boatta, Jurgen van Hal, Leo W Beukeboom, Jacintha Ellers

{"title":"High-fat and high-sugar diets induce rapid adaptations of fat storage in the house fly Musca domestica L.","authors":"F Francesco Boatta, Jurgen van Hal, Leo W Beukeboom, Jacintha Ellers","doi":"10.1093/jeb/voae122","DOIUrl":"https://doi.org/10.1093/jeb/voae122","url":null,"abstract":"Dietary change can be a strong evolutionary force and lead to rapid adaptation in organisms. High-fat and high-sugar diets can challenge key metabolic pathways, negatively affecting other life-history traits and inducing pathologies such as obesity and diabetes. In this study we use experimental evolution to investigate the plastic and evolutionary responses to nutritionally unbalanced diets. We reared replicated lines of larvae of the housefly Musca domestica on a fat-enriched (FAT), a sugar-enriched (SUG), and a control (CTRL) diet for thirteen generations. We measured development time in each generation, and larval growth and fat accumulation in generation 1, 7, and 13. Subsequently all lines were reared for one generation on the control diet to detect any plastic and evolutionary changes. In the first generation, time to pupation decreased on a fat-rich diet and increased on a sugar-rich diet. The fat-rich diet increased fat accumulation and, to a lesser extent, dry weight of the larvae. Multigenerational exposure to the unbalanced diets caused compensatory changes in development time, dry weight, as well as absolute and relative fat content, although pattern and timing depended on diet and trait. When put back on a control diet, many of the changes induced by the unbalanced diets disappeared, indicating that diet has large plastic effects. Nevertheless, fat-evolved lines still grew significantly larger than the sugar-evolved lines, and sugar-evolved lines had consistently lower fat content. This can be an effect of parental diet or an evolutionary change in nutrient metabolism as a consequence of multigenerational exposure to unbalanced diets.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The fecundity costs of building domed nests in birds. 鸟类建造圆顶巢的繁殖成本。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2024-10-01 DOI: 10.1093/jeb/voae117

Claire J Taylor, Mark C Mainwaring, Iliana Medina

{"title":"The fecundity costs of building domed nests in birds.","authors":"Claire J Taylor, Mark C Mainwaring, Iliana Medina","doi":"10.1093/jeb/voae117","DOIUrl":"10.1093/jeb/voae117","url":null,"abstract":"Animal nests provide a beneficial environment for offspring development and as such contribute to fitness. Gathering and transporting materials to construct nests is energetically costly, but the life history trade-offs associated with the types of nests built are largely unknown. Who contributes to building the nest could also mediate these trade-offs, as building a nest as a couple is expected to be less costly per individual than building alone. Using a comparative analysis on 227 songbird species globally, we found a fecundity cost associated with the type of nest a species builds. Species that build domed nests produce fewer broods per year than species building cups or platforms. Dome nesting species also have larger clutch sizes than open nesting species, but only when the nest is built by a couple and not when females build nests alone. This suggests that building domed nests represents a trade-off with investment in young, especially when females are solely responsible for nest building. More broadly, our results could explain macroevolutionary patterns, such as the recent finding that females, building on their own, more often build open cup rather than domed nests.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fitness consequences of marine larval dispersal: the role of neighborhood density, arrangement, and genetic relatedness on survival, growth, reproduction, and paternity in a sessile invertebrate. 海洋幼虫散布的健康后果：邻近密度、排列和遗传亲缘关系对无柄无脊椎动物的生存、生长、繁殖和父子关系的作用。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2024-09-30 DOI: 10.1093/jeb/voae125

Danielle K Barnes, Scott C Burgess

{"title":"Fitness consequences of marine larval dispersal: the role of neighborhood density, arrangement, and genetic relatedness on survival, growth, reproduction, and paternity in a sessile invertebrate.","authors":"Danielle K Barnes, Scott C Burgess","doi":"10.1093/jeb/voae125","DOIUrl":"https://doi.org/10.1093/jeb/voae125","url":null,"abstract":"Dispersal can evolve as an adaptation to escape competition with conspecifics or kin. Locations with a low density of conspecifics, however, may also lead to reduced opportunities for mating, especially in sessile marine invertebrates with proximity-dependent mating success. Since there are few experimental investigations, we performed a series of field experiments using an experimentally tractable species (the bryozoan Bugula neritina) to test the hypothesis that the density, spatial arrangement, and genetic relatedness of neighbors differentially affects survival, growth, reproduction, paternity, and sperm dispersal. We manipulated the density and relatedness of neighbors and found that increased density reduced survival but not growth rate, and that there was no effect of relatedness on survival, growth, or fecundity, in contrast to previous studies. We also manipulated the distances to the nearest neighbor and used genetic markers to assign paternity within known mother-offspring groups to estimate how proximity affects mating success. Distance to the nearest neighbor did not affect the number of settlers produced, the paternity share, or the degree of multiple paternity. Overall, larger than expected sperm dispersal led to high multiple paternity, regardless of the distance to the nearest neighbor. Our results have important implications for understanding selection on dispersal distance: in this system there are few disadvantages to the limited larval dispersal that does occur, and limited advantages for larvae to disperse further than a few 10s of meters.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitonuclear effects on sex ratio persist across generations in interpopulation hybrids. 种间杂交种的有丝分裂核对性比的影响会跨代持续存在。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2024-09-26 DOI: 10.1093/jeb/voae123

Suzanne Edmands, Jacob R Denova, Ben A Flanagan, Murad Jah, Scott L Applebaum

{"title":"Mitonuclear effects on sex ratio persist across generations in interpopulation hybrids.","authors":"Suzanne Edmands, Jacob R Denova, Ben A Flanagan, Murad Jah, Scott L Applebaum","doi":"10.1093/jeb/voae123","DOIUrl":"https://doi.org/10.1093/jeb/voae123","url":null,"abstract":"Eukaryotic energy production requires tight coordination between nuclear and mitochondrial gene products. Because males and females often have different energetic strategies, optimal mitonuclear coordination may be sex-specific. Previous work found evidence for sex-specific mitonuclear effects in the copepod Tigriopus californicus by comparing two parental lines and their reciprocal F1 crosses. However, an alternative hypothesis is that the patterns were driven by the parental source of nuclear alleles. Here we test this alternative hypothesis by extending the same cross to F2 hybrids, who receive both maternal and paternal nuclear alleles from F1 hybrids. Results confirm mitonuclear effects on sex ratio, with distorted ratios persisting from the F1 to F2 generations, despite reduced fitness in F2 hybrids. No sex by cross interactions were found for other phenotypic traits measured. Mitochondrial DNA content was higher in females. Both routine metabolic rate and oxidative DNA damage were lower in F2 hybrids than in parentals. The persistence of sex-specific mitonuclear effects, even in the face of F2 hybrid breakdown, attests to the magnitude of these effects, which contribute to the maintenance of within-population mitochondrial DNA polymorphisms.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Testing the predictions of reinforcement: long-term empirical data from a damselfly mottled hybrid zone. 测试强化预测：来自豆娘斑驳杂交区的长期经验数据。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2024-09-26 DOI: 10.1093/jeb/voae124

Luis Rodrigo Arce-Valdés, Andrea Viviana Ballén-Guapacha, Anais Rivas-Torres, Jesús Ramsés Chávez-Ríos, Maren Wellenreuther, Bengt Hansson, Rosa Ana Sánchez Guillén

{"title":"Testing the predictions of reinforcement: long-term empirical data from a damselfly mottled hybrid zone.","authors":"Luis Rodrigo Arce-Valdés, Andrea Viviana Ballén-Guapacha, Anais Rivas-Torres, Jesús Ramsés Chávez-Ríos, Maren Wellenreuther, Bengt Hansson, Rosa Ana Sánchez Guillén","doi":"10.1093/jeb/voae124","DOIUrl":"https://doi.org/10.1093/jeb/voae124","url":null,"abstract":"Theoretical work suggests that reinforcement can cause the strengthening of prezygotic isolation in sympatry by mitigating the costs of maladaptive hybridization. However, only a handful of studies have simultaneously tested multiple predictions of this theory in natural populations. We investigated reinforcement in a mottled hybrid zone between the damselflies Ischnura elegans and I. graellsii, which are characterized by incomplete and asymmetric reproductive isolation and exhibit reproductive character displacement in mating-related structures. We tested the conditions for reinforcement by quantifying whether hybridization was costly and prezygotic isolation stronger in sympatry compared with allopatry. Additionally, we investigated two specific predictions of reinforcement: i) greater premating asymmetries in sympatry; and ii) weaker postzygotic isolation in sympatry than in allopatry. Our findings indicate the presence of maladaptive hybrids, which suggests Bateson-Dobzhansky-Müller incompatibilities in allopatry. We also found that reinforcement has strengthened mechanical isolation, at least in one direction in sympatry. We observed evidence for greater premating asymmetries in sympatry than in allopatry, which is consistent with reinforcement. However, fully testing the prediction of weaker postzygotic isolation in sympatry compared to allopatry was hindered by the highly asymmetrical levels of reproductive isolation between the two reciprocal cross directions. Our study highlights a case where reinforcement and heterospecific gene flow exert opposite effects on reproductive isolation between reciprocal crosses, where reinforcement increases reproductive isolation in one direction while gene flow weakens it in the opposite direction.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Testing for heterogeneous rates of discrete character evolution on phylogenies. 测试系统进化中离散特征进化的异质性速率

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2024-09-20 DOI: 10.1093/jeb/voae119

Liam J Revell, Klaus P Schliep, D L Mahler, T Ingram

{"title":"Testing for heterogeneous rates of discrete character evolution on phylogenies.","authors":"Liam J Revell, Klaus P Schliep, D L Mahler, T Ingram","doi":"10.1093/jeb/voae119","DOIUrl":"https://doi.org/10.1093/jeb/voae119","url":null,"abstract":"Many hypotheses in the field of phylogenetic comparative biology involve specific changes in the rate or process of trait evolution. This is particularly true of approaches designed to connect macroevolutionary pattern to microevolutionary process. We present a method designed to test whether the rate of evolution of a discrete character has changed in one or more clades, lineages, or time periods. This method differs from other related approaches (such as the 'covarion' model) in that the 'regimes' in which the rate or process is postulated to have changed are specified a priori by the user, rather than inferred from the data. Similarly, it differs from methods designed to model a correlation between two binary traits in that the regimes mapped onto the tree are fixed. We apply our method to investigate the rate of dewlap color and/or caudal vertebra number evolution in Caribbean and mainland clades of the diverse lizard genus Anolis. We find little evidence to support any difference in the evolutionary process between mainland and island evolution for either character. We also examine the statistical properties of the method more generally and show that it has acceptable type I error, parameter estimation, and power. Finally, we discuss some general issues of frequentist hypothesis testing and model adequacy, as well as the relationship of our method to existing models of heterogeneity in the rate of discrete character evolution on phylogenies.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effects of intersexual interactions on survival can drive the evolution of female ornaments in the absence of mate limitation. 在没有配偶限制的情况下，两性相互作用对生存的影响会推动雌性装饰品的进化。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2024-09-20 DOI: 10.1093/jeb/voae121

J Colton Watts, Courtney L Fitzpatrick

{"title":"The effects of intersexual interactions on survival can drive the evolution of female ornaments in the absence of mate limitation.","authors":"J Colton Watts, Courtney L Fitzpatrick","doi":"10.1093/jeb/voae121","DOIUrl":"https://doi.org/10.1093/jeb/voae121","url":null,"abstract":"The evolution of sexual ornaments in animals is typically attributed to reproductive competition. However, sexual ornaments also arise in contexts where the ornamented sex is neither mate nor gamete limited, and explanations for ornamentation in these cases remains incomplete. In many species, particularly those with slow life histories, lifetime reproductive success depends more strongly on adult survival than fecundity, and survival can depend on intersexual interactions. We develop a population genetic model to investigate how the effect of intersexual interactions on survival may contribute to ornament evolution in the absence of competition for mates. Using female ornamentation in polygynous mating systems as a case study, we show that, indeed, ornaments can evolve when the ornament functions to modify interactions with males in ways that enhance a female's own survival. The evolutionary dynamics depend on qualitatively on the specific behavioral mechanism by which the ornament modifies social interactions. In all cases, the ornament's long-term persistence is ultimately determined by the coevolution of the male locus that determines how males affect female survival. We outline the scenarios that are most likely to favor the evolution of female ornaments through effects of intersexual interactions on survival, and we urge empirical researchers to consider the potential for this social selection mechanism to shape traits of interest across taxa.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In the presence of rivals, males allocate less ejaculate per mating in Japanese pygmy squid with female sperm rejection. 在日本侏儒鱿的交配过程中，如果存在竞争对手，雄性侏儒鱿每次交配的射精量会减少，但雌性侏儒鱿的精子会被排斥。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2024-09-20 DOI: 10.1093/jeb/voae120

Ryohei Tanabe, Nobuhiko Akiyama, Noriyosi Sato

{"title":"In the presence of rivals, males allocate less ejaculate per mating in Japanese pygmy squid with female sperm rejection.","authors":"Ryohei Tanabe, Nobuhiko Akiyama, Noriyosi Sato","doi":"10.1093/jeb/voae120","DOIUrl":"https://doi.org/10.1093/jeb/voae120","url":null,"abstract":"When mating is promiscuous, the ejaculate volume allocated to each female is expected (intuitively) to be linked with the presence and number of rival males. Previous theories have indicated that, in the absence of rival males, males will allocate the minimum ejaculate volume sufficient for fertilization of all available oocytes. However, it is unclear if this ejaculation strategy is still effective where females have a mechanism to remove sperm after copulation ('female sperm rejection'). In the Japanese pygmy squid, Idiosepius paradoxus, female sperm rejection was observed to occur frequently, but males were able to increase the remaining sperm volume available for fertilization, suggesting that there is no significant impact of female sperm rejection on male ejaculation strategy. However, males decreased ejaculate volume in the presence of rival males and increased it in their absence, a pattern counterintuitive to predictions from previous theories. Females reject sperm at every copulation, so, after copulation, the amount of a given male's sperm remaining with the female may decrease after each subsequent rival copulates with the female. Perhaps in this species the presence of rivals signals the risk of further sperm rejection, so males choose to conserve their resources and move on.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antler size in red deer: declining selection and increasing genetic variance with age, but little senescence. 红鹿的鹿角大小：随着年龄的增长，选择减少，遗传变异增加，但衰老程度很小。

IF 2.1 3区生物学

Journal of Evolutionary Biology Pub Date : 2024-09-20 DOI: 10.1093/jeb/voae112

Elizabeth A Mittell, Priyam Mandaliya, Josephine M Pemberton, Alison Morris, Sean Morris, Susan E Johnston, Loeske E B Kruuk

{"title":"Antler size in red deer: declining selection and increasing genetic variance with age, but little senescence.","authors":"Elizabeth A Mittell, Priyam Mandaliya, Josephine M Pemberton, Alison Morris, Sean Morris, Susan E Johnston, Loeske E B Kruuk","doi":"10.1093/jeb/voae112","DOIUrl":"https://doi.org/10.1093/jeb/voae112","url":null,"abstract":"While senescence is a common occurrence in wild populations, not all traits decline with age simultaneously and some do not show any senes- cence. A lack of senescence in secondary sexual traits is thought to be due to their importance for reproductive success. However, if reproduc- tive success senesces, why would secondary sexual traits apparently not senesce? Here we explored this question in a wild population of red deer (Cervus elaphus) using antler form (number of points), a secondary sexual trait which shows little senescence, despite the occurrence of reproductive senescence. In line with expectations for traits that senesce, genetic vari- ance in antler form increased with age and selection weakened with age. Therefore, there was no indication that stronger selection on individu- als that survived to older ages was countering the dilution of selection due to fewer individuals being alive. Furthermore, the effect of selec- tive disappearance masking a slight decline in antler form in the oldest years was small. Interestingly, although genetic variance and positive se- lection of antler form were found, there was no evidence of a response to selection, supporting a genetic decoupling of antler senescence and re- productive senescence. Finally, a positive genetic covariance in antler form among age classes provides a possible explanation for the the lack of senescence. These findings suggest that antler form is under a genetic constraint that prevents it from senescing, providing an interesting evolu- tionary explanation for negligible senescence in a secondary sexual trait, and consequently, the existence of asynchrony in senescence among traits within populations.","PeriodicalId":50198,"journal":{"name":"Journal of Evolutionary Biology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0