1
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Almeida JGL, Peixoto PEC. In search of the perfect web? Males of the golden silk orb‐web spider
trichonephila clavipes
do not aggregate in webs of high‐quality females. Ethology 2021. [DOI: 10.1111/eth.13132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- João Gabriel Lacerda Almeida
- Laboratório de Seleção Sexual e Interações Agonísticas (Lasexia) Departamento de Genética, Evolução Universidade Federal de Minas Gerais Belo Horizonte Brazil
| | - Paulo Enrique Cardoso Peixoto
- Laboratório de Seleção Sexual e Interações Agonísticas (Lasexia) Departamento de Genética, Evolução Universidade Federal de Minas Gerais Belo Horizonte Brazil
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2
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Wang W, Li J, Wang H, Ran Y, Wu H. Genetic evidence reveals male‐biased dispersal of the Omei tree frog. J Zool (1987) 2019. [DOI: 10.1111/jzo.12749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- W. Wang
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
| | - J. Li
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
| | - H. Wang
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
| | - Y. Ran
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
| | - H. Wu
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
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3
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Zhang W, Huang L, Li J, Li Y, Wei S, Cai L, Wu H. Transcriptomic analysis of differentially expressed genes in the oviduct of Rhacophorus omeimontis provides insights into foam nest construction. BMC Genomics 2019; 20:562. [PMID: 31286852 PMCID: PMC6615284 DOI: 10.1186/s12864-019-5931-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 06/24/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The production of foam nests is one of the strategies that has evolved to allow some anuran species to protect their eggs and larvae. Despite considerable knowledge of the biochemical components of and construction behavior leading to anuran foam nests, little is known about the molecular basis of foam nest construction. Rhacophorus omeimontis presents an arboreal foam-nesting strategy during the breeding season. To better understand the molecular mechanism of foam nest production, transcriptome sequencing was performed using the oviduct of female R. omeimontis during the period when foam nest production began and the period when foam nest production was finished. RESULTS The transcriptomes of six oviduct samples of R. omeimontis were obtained using Illumina sequencing. A total of 84,917 unigenes were obtained, and 433 genes (270 upregulated and 163 downregulated) were differentially expressed between the two periods. These differentially expressed genes (DEGs) were mainly enriched in extracellular space and extracellular region based on Gene Ontology (GO) enrichment analysis and in the pathways of two-component system, cell adhesion molecules, steroid hormone biosynthesis and neuroactive ligand-receptor interaction based on Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis. Specifically, genes encoding lectins, surfactant proteins and immunity components were highly expressed when the foam nest construction began, indicating that the constituents of foam nests in R. omeimontis were likely a mixture of surfactant, lectins and immune defense proteins. During the period when foam nest production was finished, genes related to lipid metabolism, steroid hormone and immune defense were highly expressed, indicating their important roles in regulating the process of foam nesting. CONCLUSIONS Our study provides a rich list of potential genes involved in the production of foam nests in R. omeimontis. These results provide insights into the molecular mechanisms underlying the process of foam nest construction and will facilitate further studies of R. omeimontis.
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Affiliation(s)
- Wei Zhang
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, College of Life Sciences, Central China Normal University, Wuhan, 430079 China
- College of Life Science, Zhengzhou Normal University, Zhengzhou, 450044 China
| | - Li Huang
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, College of Life Sciences, Central China Normal University, Wuhan, 430079 China
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, 466000 China
| | - Jun Li
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, College of Life Sciences, Central China Normal University, Wuhan, 430079 China
| | - Yinghua Li
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, College of Life Sciences, Central China Normal University, Wuhan, 430079 China
| | - Shichao Wei
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, College of Life Sciences, Central China Normal University, Wuhan, 430079 China
| | - Ling Cai
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, College of Life Sciences, Central China Normal University, Wuhan, 430079 China
| | - Hua Wu
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, College of Life Sciences, Central China Normal University, Wuhan, 430079 China
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4
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Hoogland JL, Trott R, Keller SR. Polyandry and Polygyny in a Social Rodent: An Integrative Perspective Based on Social Organization, Copulations, and Genetics. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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5
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Polyandrous mating increases offspring production and lifespan in female Drosophila arizonae. Behav Ecol Sociobiol 2018. [DOI: 10.1007/s00265-018-2589-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Boulton RA, Zuk M, Shuker DM. An Inconvenient Truth: The Unconsidered Benefits of Convenience Polyandry. Trends Ecol Evol 2018; 33:904-915. [PMID: 30376988 DOI: 10.1016/j.tree.2018.10.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 09/19/2018] [Accepted: 10/02/2018] [Indexed: 12/22/2022]
Abstract
Polyandry, or multiple mating by females with different males, is commonplace. One explanation is that females engage in convenience polyandry, mating multiple times to reduce the costs of sexual harassment. Although the logic underlying convenience polyandry is clear, and harassment often seems to influence mating outcomes, it has not been subjected to as thorough theoretical or empirical attention as other explanations for polyandry. We re-examine here convenience polyandry in the light of new studies demonstrating previously unconsidered benefits of polyandry. We suggest that true convenience polyandry is likely to be a fleeting phenomenon, even though it can profoundly shape mating-system evolution via potential feedback loops between resistance to males and the costs and benefits of mating.
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Affiliation(s)
- Rebecca A Boulton
- College of Life and Environmental Sciences, University of Exeter, Penryn, Cornwall TR10 9FE, UK; Department of Entomology, University of Minnesota, St Paul, MN 55108, USA; School of Biology, University of St Andrews, St Andrews KY16 9TH, UK.
| | - Marlene Zuk
- Department of Ecology, Evolution and Behavior, University of Minnesota, St Paul, MN 55108, USA
| | - David M Shuker
- School of Biology, University of St Andrews, St Andrews KY16 9TH, UK
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7
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Lee PLM, Schofield G, Haughey RI, Mazaris AD, Hays GC. A Review of Patterns of Multiple Paternity Across Sea Turtle Rookeries. ADVANCES IN MARINE BIOLOGY 2017; 79:1-31. [PMID: 30012274 DOI: 10.1016/bs.amb.2017.09.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Why females would mate with multiple partners and have multiple fathers for clutches or litters is a long-standing enigma. There is a broad dichotomy in hypotheses ranging from polyandry having benefits to simply being an unavoidable consequence of a high incidence of male-female encounters. If females simply give in to mating when it is too costly to avoid being harassed by males (convenience polyandry), then there should be a higher rate of mating as density increases. However, if females actively seek males because they benefit from multiple mating, then mating frequency, and consequently the incidence of multiple paternity of clutches, should be high throughout. To explore these competing explanations, here we review the incidence of multiple paternity for sea turtles nesting around the World. Across 30 rookeries, including all 7 species of sea turtle, the incidence of multiple paternity was only weakly linked to rookery size (r2=0.14). However, using high resolution at-sea GPS tracking we show that the specifics of movement patterns play a key role in driving packing density and hence the likely rate of male-female encounters. When individuals use the same focal areas, packing density could be 100× greater than when assuming individuals move independently. Once the extent of adult movements in the breeding season was considered so that movements and abundance could be combined to produce a measure of density, then across rookeries we found a very tight relationship (r2=0.96) between packing density and the incidence of multiple paternity. These findings suggest that multiple paternity in sea turtles may have no benefit, but is simply a consequence of the incidence of male-female encounters.
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Affiliation(s)
- Patricia L M Lee
- Centre for Integrative Ecology, Deakin University, Geelong, VIC, Australia
| | - Gail Schofield
- Centre for Integrative Ecology, Deakin University, Geelong, VIC, Australia
| | - Rebecca I Haughey
- Centre for Integrative Ecology, Deakin University, Geelong, VIC, Australia
| | - Antonios D Mazaris
- School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Graeme C Hays
- Centre for Integrative Ecology, Deakin University, Geelong, VIC, Australia.
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8
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Li J, Shen H, Wang H, Zhao M, Luo Z, Wu H. Diversifying selection is the dominant factor affecting the geographical variation of
MHC
class
II
genes in the Omei tree frog. J Zool (1987) 2016. [DOI: 10.1111/jzo.12373] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. Li
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
| | - H. Shen
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
| | - H. Wang
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
| | - M. Zhao
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
| | - Z. Luo
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
| | - H. Wu
- Institute of Evolution and Ecology School of Life Sciences Central China Normal University Wuhan China
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9
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Multiple paternity in a viviparous toad with internal fertilisation. Naturwissenschaften 2016; 103:51. [PMID: 27262290 DOI: 10.1007/s00114-016-1377-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/16/2016] [Accepted: 05/25/2016] [Indexed: 10/21/2022]
Abstract
Anurans are renowned for a high diversity of reproductive modes, but less than 1 % of species exhibit internal fertilisation followed by viviparity. In the live-bearing West African Nimba toad (Nimbaphrynoides occidentalis), females produce yolk-poor eggs and internally nourish their young after fertilisation. Birth of fully developed juveniles takes place after 9 months. In the present study, we used genetic markers (eight microsatellite loci) to assign the paternity of litters of 12 females comprising on average 9.7 juveniles. In 9 out of 12 families (75 %), a single sire was sufficient; in three families (25 %), more than one sire was necessary to explain the observed genotypes in each family. These findings are backed up with field observations of male resource defence (underground cavities in which mating takes place) as well as coercive mating attempts, suggesting that the observed moderate level of multiple paternity in a species without distinct sperm storage organs is governed by a balance of female mate choice and male reproductive strategies.
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10
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Li J, Zhao M, Wei S, Luo Z, Wu H. Geologic events coupled with Pleistocene climatic oscillations drove genetic variation of Omei treefrog (Rhacophorus omeimontis) in southern China. BMC Evol Biol 2015; 15:289. [PMID: 26690899 PMCID: PMC4687352 DOI: 10.1186/s12862-015-0572-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 12/16/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Pleistocene climatic oscillations and historical geological events may both influence current patterns of genetic variation, and the species in southern China that faced unique climatic and topographical events have complex evolutionary histories. However, the relative contributions of climatic oscillations and geographical events to the genetic variation of these species remain undetermined. To investigate patterns of genetic variation and to test the hypotheses about the factors that shaped the distribution of this genetic variation in species of southern China, mitochondrial genes (cytochrome b and NADH dehydrogenase subunit 2) and nine microsatellite loci of the Omei tree frog (Rhacophorus omeimontis) were amplified in this study. RESULTS The genetic diversity in the populations of R. omeimontis was high. The phylogenetic trees reconstructed from the mitochondrial DNA (mtDNA) haplotypes and the Bayesian genetic clustering analysis based on microsatellite data both revealed that all populations were divided into three lineages (SC, HG and YN). The two most recent splitting events among the lineages coincided with recent geological events (including the intense uplift of the Qinghai-Tibet Plateau, QTP and the subsequent movements of the Yun-Gui Plateau, YGP) and the Pleistocene glaciations. Significant expansion signals were not detected in mismatch analyses or neutrality tests. And the effective population size of each lineage was stable during the Pleistocene. CONCLUSIONS Based on the results of this study, complex geological events (the recent dramatic uplift of the QTP and the subsequent movements of the YGP) and the Pleistocene glaciations were apparent drivers of the rapid divergence of the R. omeimontis lineages. Each diverged lineages survived in situ with limited gene exchanges, and the stable demographics of lineages indicate that the Pleistocene climatic oscillations were inconsequential for this species. The analysis of genetic variation in populations of R. omeimontis contributes to the understanding of the effects of changes in climate and of geographical events on the dynamic development of contemporary patterns of genetic variation in the species of southern China.
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Affiliation(s)
- Jun Li
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, School of Life Sciences, Central China Normal University, 152 Luoyulu, Hongshan District, Wuhan, 430079, China.
| | - Mian Zhao
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, School of Life Sciences, Central China Normal University, 152 Luoyulu, Hongshan District, Wuhan, 430079, China.
| | - Shichao Wei
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, School of Life Sciences, Central China Normal University, 152 Luoyulu, Hongshan District, Wuhan, 430079, China.
| | - Zhenhua Luo
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, School of Life Sciences, Central China Normal University, 152 Luoyulu, Hongshan District, Wuhan, 430079, China.
| | - Hua Wu
- Institute of Evolution and Ecology, International Research Centre of Ecology and Environment, School of Life Sciences, Central China Normal University, 152 Luoyulu, Hongshan District, Wuhan, 430079, China.
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