Steven H Ferguson, Jeff W Higdon, Chloe Schmidt, Corinne Pomerleau, Cory J D Matthews
{"title":"齿鲸体型与生活史特征的关系研究:体型能预测快-慢生活史吗?","authors":"Steven H Ferguson, Jeff W Higdon, Chloe Schmidt, Corinne Pomerleau, Cory J D Matthews","doi":"10.1007/s11692-023-09605-4","DOIUrl":null,"url":null,"abstract":"<p><p>A widespread pattern in vertebrate life-history evolution is for species to evolve towards either fast or slow life histories; however, the underlying causes of this pattern remain unclear. Toothed whales (Odontoceti) are a diverse group with a range of body sizes and life histories, making them an ideal model to investigate potential drivers of this dichotomy. Using ancestral reconstruction, we identified that certain groups of odontocetes evolved more-streamlined, presumably faster, body shapes around the same time that killer whales (<i>Orcinus orca</i>) evolved into whale predators approximately 1 Mya during the Pleistocene. This suggests that the evolution of a streamlined body shape may have been an adaptation to escape killer whale predation, leading to longer life-history events. To test this hypothesis, we performed a cluster analysis of odontocete whales and confirmed the dual pattern of life-history traits, with one group referred to as 'reproducers' characterized by early age of maturity, short gestation, short interbirth interval, and short lifespan, and the other group referred to as 'bet-hedgers' exhibiting the opposite pattern. However, we found that life history grouping was relatively unrelated to whale shape (i.e., more streamlined or less streamlined). Therefore, we incorporated principal component results into mixed effects models, and the model results indicated that body shape was positively related to neonate length (a measure of investment in progeny), but not significantly related to the temporal life-history traits. Thus, whale body shape is not a sufficient explanation for the evolution of fast-slow life histories in odontocete whales.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s11692-023-09605-4.</p>","PeriodicalId":50471,"journal":{"name":"Evolutionary Biology","volume":"50 3","pages":"300-317"},"PeriodicalIF":1.9000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10415445/pdf/","citationCount":"0","resultStr":"{\"title\":\"Investigating the Relationship Between Body Shape and Life History Traits in Toothed Whales: Can Body Shape Predict Fast-Slow Life Histories?\",\"authors\":\"Steven H Ferguson, Jeff W Higdon, Chloe Schmidt, Corinne Pomerleau, Cory J D Matthews\",\"doi\":\"10.1007/s11692-023-09605-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>A widespread pattern in vertebrate life-history evolution is for species to evolve towards either fast or slow life histories; however, the underlying causes of this pattern remain unclear. Toothed whales (Odontoceti) are a diverse group with a range of body sizes and life histories, making them an ideal model to investigate potential drivers of this dichotomy. Using ancestral reconstruction, we identified that certain groups of odontocetes evolved more-streamlined, presumably faster, body shapes around the same time that killer whales (<i>Orcinus orca</i>) evolved into whale predators approximately 1 Mya during the Pleistocene. This suggests that the evolution of a streamlined body shape may have been an adaptation to escape killer whale predation, leading to longer life-history events. To test this hypothesis, we performed a cluster analysis of odontocete whales and confirmed the dual pattern of life-history traits, with one group referred to as 'reproducers' characterized by early age of maturity, short gestation, short interbirth interval, and short lifespan, and the other group referred to as 'bet-hedgers' exhibiting the opposite pattern. However, we found that life history grouping was relatively unrelated to whale shape (i.e., more streamlined or less streamlined). Therefore, we incorporated principal component results into mixed effects models, and the model results indicated that body shape was positively related to neonate length (a measure of investment in progeny), but not significantly related to the temporal life-history traits. Thus, whale body shape is not a sufficient explanation for the evolution of fast-slow life histories in odontocete whales.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s11692-023-09605-4.</p>\",\"PeriodicalId\":50471,\"journal\":{\"name\":\"Evolutionary Biology\",\"volume\":\"50 3\",\"pages\":\"300-317\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10415445/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Evolutionary Biology\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1007/s11692-023-09605-4\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2023/5/23 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q3\",\"JCRName\":\"EVOLUTIONARY BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Evolutionary Biology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s11692-023-09605-4","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/5/23 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"EVOLUTIONARY BIOLOGY","Score":null,"Total":0}
Investigating the Relationship Between Body Shape and Life History Traits in Toothed Whales: Can Body Shape Predict Fast-Slow Life Histories?
A widespread pattern in vertebrate life-history evolution is for species to evolve towards either fast or slow life histories; however, the underlying causes of this pattern remain unclear. Toothed whales (Odontoceti) are a diverse group with a range of body sizes and life histories, making them an ideal model to investigate potential drivers of this dichotomy. Using ancestral reconstruction, we identified that certain groups of odontocetes evolved more-streamlined, presumably faster, body shapes around the same time that killer whales (Orcinus orca) evolved into whale predators approximately 1 Mya during the Pleistocene. This suggests that the evolution of a streamlined body shape may have been an adaptation to escape killer whale predation, leading to longer life-history events. To test this hypothesis, we performed a cluster analysis of odontocete whales and confirmed the dual pattern of life-history traits, with one group referred to as 'reproducers' characterized by early age of maturity, short gestation, short interbirth interval, and short lifespan, and the other group referred to as 'bet-hedgers' exhibiting the opposite pattern. However, we found that life history grouping was relatively unrelated to whale shape (i.e., more streamlined or less streamlined). Therefore, we incorporated principal component results into mixed effects models, and the model results indicated that body shape was positively related to neonate length (a measure of investment in progeny), but not significantly related to the temporal life-history traits. Thus, whale body shape is not a sufficient explanation for the evolution of fast-slow life histories in odontocete whales.
Supplementary information: The online version contains supplementary material available at 10.1007/s11692-023-09605-4.
期刊介绍:
The aim, scope, and format of Evolutionary Biology will be based on the following principles:
Evolutionary Biology will publish original articles and reviews that address issues and subjects of core concern in evolutionary biology. All papers must make original contributions to our understanding of the evolutionary process.
The journal will remain true to the original intent of the original series to provide a place for broad syntheses in evolutionary biology. Articles will contribute to this goal by defining the direction of current and future research and by building conceptual links between disciplines. In articles presenting an empirical analysis, the results of these analyses must be integrated within a broader evolutionary framework.
Authors are encouraged to submit papers presenting novel conceptual frameworks or major challenges to accepted ideas.
While brevity is encouraged, there is no formal restriction on length for major articles.
The journal aims to keep the time between original submission and appearance online to within four months and will encourage authors to revise rapidly once a paper has been submitted and deemed acceptable.