International journal of evolutionary biology最新文献_第10页

New insights into ligand-receptor pairing and coevolution of relaxin family peptides and their receptors in teleosts. 硬骨鱼弛豫素家族肽及其受体的配体-受体配对和共同进化的新见解。

International journal of evolutionary biology Pub Date : 2012-01-01 DOI: 10.1155/2012/310278

Sara Good, Sergey Yegorov, Joran Martijn, Jens Franck, Jan Bogerd

{"title":"New insights into ligand-receptor pairing and coevolution of relaxin family peptides and their receptors in teleosts.","authors":"Sara Good, Sergey Yegorov, Joran Martijn, Jens Franck, Jan Bogerd","doi":"10.1155/2012/310278","DOIUrl":"https://doi.org/10.1155/2012/310278","url":null,"abstract":"Relaxin-like peptides (RLN/INSL) play diverse roles in reproductive and neuroendocrine processes in placental mammals and are functionally associated with two distinct types of receptors (RXFP) for each respective function. The diversification of RLN/INSL and RXFP gene families in vertebrates was predominantly driven by whole genome duplications (2R and 3R). Teleosts preferentially retained duplicates of genes putatively involved in neuroendocrine regulation, harboring a total of 10-11 receptors and 6 ligand genes, while most mammals have equal numbers of ligands and receptors. To date, the ligand-receptor relationships of teleost Rln/Insl peptides and their receptors have largely remained unexplored. Here, we use selection analyses based on sequence data from 5 teleosts and qPCR expression data from zebrafish to explore possible ligand-receptor pairings in teleosts. We find support for the hypothesis that, with the exception of RLN, which has undergone strong positive selection in mammalian lineages, the ligand and receptor genes shared between mammals and teleosts appear to have similar pairings. On the other hand, the teleost-specific receptors show evidence of subfunctionalization. Overall, this study underscores the complexity of RLN/INSL and RXFP ligand-receptor interactions in teleosts and establishes theoretical background for further experimental work in nonmammals.","PeriodicalId":73449,"journal":{"name":"International journal of evolutionary biology","volume":"2012 ","pages":"310278"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/310278","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9368125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

170 Years of "Lock-and-Key": Genital Morphology and Reproductive Isolation. 170年的“锁与钥匙”:生殖形态和生殖隔离。

International journal of evolutionary biology Pub Date : 2012-01-01 DOI: 10.1155/2012/247352

John P Masly

{"title":"170 Years of \"Lock-and-Key\": Genital Morphology and Reproductive Isolation.","authors":"John P Masly","doi":"10.1155/2012/247352","DOIUrl":"https://doi.org/10.1155/2012/247352","url":null,"abstract":"The divergent genital morphology observed among closely related animal species has long been posited as a mechanism of reproductive isolation. Despite the intuitive appeal that rapidly evolving genitalia might cause speciation, evidence for its importance-or even its potential-in reproductive isolation is mixed. Most tests of genital structural isolation between species often fail to find convincing evidence that differences in morphology prevent copulation or insemination between species. However, recent work suggests that differences in genital morphology might contribute to reproductive isolation in less obvious ways through interactions with sensory mechanisms that result in lowered reproductive fitness in heterospecific matings. In this paper, I present a brief history of the \"lock-and-key\" hypothesis, summarize the evidence for the involvement of genital morphology in different mechanisms of reproductive isolation, discuss progress in identifying the molecular and genetic bases of species differences in genital morphology, and discuss prospects for future work on the role of genitalia in speciation.L'armure copulatrice est un organe ou mieux un instrument ingénieusement compliqué, destiné à s'adapter aux parties sexuelles externes de la femelle pour l'accomplissement de l'acte copulatif; elle est la garantie de la conservation des types, la sauvegarde de la légitimité de l'espèce. [The copulation armor is an organ or better an instrument ingeniously complicated, destined to adapt to sexual parts external to the female for the completion of copulation; it is the guarantee of the preservation of the standards, the safeguard of the legitimacy of the species.]L. Dufour, 1844.","PeriodicalId":73449,"journal":{"name":"International journal of evolutionary biology","volume":"2012 ","pages":"247352"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/247352","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9374532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 138

Why chromosome palindromes? 为什么是染色体回文?

International journal of evolutionary biology Pub Date : 2012-01-01 DOI: 10.1155/2012/207958

Esther Betrán, Jeffery P Demuth, Anna Williford

{"title":"Why chromosome palindromes?","authors":"Esther Betrán, Jeffery P Demuth, Anna Williford","doi":"10.1155/2012/207958","DOIUrl":"https://doi.org/10.1155/2012/207958","url":null,"abstract":"We look at sex-limited chromosome (Y or W) evolution with particular emphasis on the importance of palindromes. Y chromosome palindromes consist of inverted duplicates that allow for local recombination in an otherwise nonrecombining chromosome. Since palindromes enable intrachromosomal gene conversion that can help eliminate deleterious mutations, they are often highlighted as mechanisms to protect against Y degeneration. However, the adaptive significance of recombination resides in its ability to decouple the evolutionary fates of linked mutations, leading to both a decrease in degeneration rate and an increase in adaptation rate. Our paper emphasizes the latter, that palindromes may exist to accelerate adaptation by increasing the potential targets and fixation rates of incoming beneficial mutations. This hypothesis helps reconcile two enigmatic features of the \"palindromes as protectors\" view: (1) genes that are not located in palindromes have been retained under purifying selection for tens of millions of years, and (2) under models that only consider deleterious mutations, gene conversion benefits duplicate gene maintenance but not initial fixation. We conclude by looking at ways to test the hypothesis that palindromes enhance the rate of adaptive evolution of Y-linked genes and whether this effect can be extended to palindromes on other chromosomes.","PeriodicalId":73449,"journal":{"name":"International journal of evolutionary biology","volume":"2012 ","pages":"207958"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/207958","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9375000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 29

Is Evolution of Mating Preferences Inevitable? Random Mating in the Multisex System of Tetrahymena thermophila. 交配偏好的进化是不可避免的吗?嗜热四膜虫多性别系统中的随机交配。

International journal of evolutionary biology Pub Date : 2012-01-01 DOI: 10.1155/2012/201921

Sujal S Phadke, Lauren Cooper, Rebecca A Zufall

{"title":"Is Evolution of Mating Preferences Inevitable? Random Mating in the Multisex System of Tetrahymena thermophila.","authors":"Sujal S Phadke, Lauren Cooper, Rebecca A Zufall","doi":"10.1155/2012/201921","DOIUrl":"https://doi.org/10.1155/2012/201921","url":null,"abstract":"Ciliate mating systems are highly diversified, providing unique opportunities to study sexual differentiation and its implications for mating dynamics. Many species of ciliates have multiple (>2) sexes. More sexes may mean more choice and an opportunity for evolution of preferential mating. We asked if the multiple sexes of the ciliate Tetrahymena thermophila mate preferentially among each other. We quantified pairing frequencies among four sexes of T. thermophila using experiments that allowed the sexes to compete as mating partners. We found that all sexes mated equally frequently among each other, that is, we found no evidence of preferential mating with respect to sex. This suggests that the “mate choice” in this ciliate is binary, between whether to form a pair or not and, in this regard, sex facilitates only self-/non-self-distinction. Thus, presence of multiple sexes does not necessarily result in the evolution of mating bias, which could decrease the maximum amount of mating that would otherwise be possible in a population. Our result of random mating verifies a key assumption in the theoretical model of sex ratio evolution in T. thermophila. Investigation into molecular differences between the sexes will be necessary to reveal the mechanistic basis of random mating among them.","PeriodicalId":73449,"journal":{"name":"International journal of evolutionary biology","volume":"2012 ","pages":"201921"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/201921","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9375132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

The role of reticulate evolution in creating innovation and complexity. 网状进化在创造创新和复杂性中的作用。

International journal of evolutionary biology Pub Date : 2012-01-01 DOI: 10.1155/2012/418964

Kristen S Swithers, Shannon M Soucy, J Peter Gogarten

{"title":"The role of reticulate evolution in creating innovation and complexity.","authors":"Kristen S Swithers, Shannon M Soucy, J Peter Gogarten","doi":"10.1155/2012/418964","DOIUrl":"https://doi.org/10.1155/2012/418964","url":null,"abstract":"Reticulate evolution encompasses processes that conflict with traditional Tree of Life efforts. These processes, horizontal gene transfer (HGT), gene and whole-genome duplications through allopolyploidization, are some of the main driving forces for generating innovation and complexity. HGT has a profound impact on prokaryotic and eukaryotic evolution. HGTs can lead to the invention of new metabolic pathways and the expansion and enhancement of previously existing pathways. It allows for organismal adaptation into new ecological niches and new host ranges. Although many HGTs appear to be selected for because they provide some benefit to their recipient lineage, other HGTs may be maintained by chance through random genetic drift. Moreover, some HGTs that may initially seem parasitic in nature can cause complexity to arise through pathways of neutral evolution. Another mechanism for generating innovation and complexity, occurring more frequently in eukaryotes than in prokaryotes, is gene and genome duplications, which often occur through allopolyploidizations. We discuss how these different evolutionary processes contribute to generating innovation and complexity.","PeriodicalId":73449,"journal":{"name":"International journal of evolutionary biology","volume":"2012 ","pages":"418964"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/418964","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9432583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 23

Divergent evolution of male aggressive behaviour: another reproductive isolation barrier in extremophile poeciliid fishes? 雄性攻击行为的分化进化:嗜极鱼类的另一生殖隔离屏障?

International journal of evolutionary biology Pub Date : 2012-01-01 DOI: 10.1155/2012/148745

David Bierbach, Moritz Klein, Vanessa Saßmannshausen, Ingo Schlupp, Rüdiger Riesch, Jakob Parzefall, Martin Plath

{"title":"Divergent evolution of male aggressive behaviour: another reproductive isolation barrier in extremophile poeciliid fishes?","authors":"David Bierbach, Moritz Klein, Vanessa Saßmannshausen, Ingo Schlupp, Rüdiger Riesch, Jakob Parzefall, Martin Plath","doi":"10.1155/2012/148745","DOIUrl":"https://doi.org/10.1155/2012/148745","url":null,"abstract":"Reproductive isolation among locally adapted populations may arise when immigrants from foreign habitats are selected against via natural or (inter-)sexual selection (female mate choice). We asked whether also intrasexual selection through male-male competition could promote reproductive isolation among populations of poeciliid fishes that are locally adapted to extreme environmental conditions [i.e., darkness in caves and/or toxic hydrogen sulphide (H(2)S)]. We found strongly reduced aggressiveness in extremophile P. oecilia mexicana, and darkness was the best predictor for the evolutionary reduction of aggressiveness, especially when combined with presence of H(2)S. We demonstrate that reduced aggression directly translates into migrant males being inferior when paired with males from non-sulphidic surface habitats. By contrast, the phylogenetically old sulphur endemic P. sulphuraria from another sulphide spring area showed no overall reduced aggressiveness, possibly indicating evolved mechanisms to better cope with H(2)S.","PeriodicalId":73449,"journal":{"name":"International journal of evolutionary biology","volume":"2012 ","pages":"148745"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/148745","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9728857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 29

Comparative analyses of base compositions, DNA sizes, and dinucleotide frequency profiles in archaeal and bacterial chromosomes and plasmids. 古细菌和细菌染色体和质粒的碱基组成、DNA大小和二核苷酸频率谱的比较分析。

International journal of evolutionary biology Pub Date : 2012-01-01 DOI: 10.1155/2012/342482

Hiromi Nishida

{"title":"Comparative analyses of base compositions, DNA sizes, and dinucleotide frequency profiles in archaeal and bacterial chromosomes and plasmids.","authors":"Hiromi Nishida","doi":"10.1155/2012/342482","DOIUrl":"https://doi.org/10.1155/2012/342482","url":null,"abstract":"In the present paper, I compared guanine-cytosine (GC) contents, DNA sizes, and dinucleotide frequency profiles in 109 archaeal chromosomes, 59 archaeal plasmids, 1379 bacterial chromosomes, and 854 bacterial plasmids. In more than 80% of archaeal and bacterial plasmids, the GC content was lower than that of the host chromosome. Furthermore, most of the differences in GC content found between a plasmid and its host chromosome were less than 10%, and the GC content in plasmids and host chromosomes was highly correlated (Pearson's correlation coefficient r = 0.965 in bacteria and 0.917 in archaea). These results support the hypothesis that horizontal gene transfers have occurred frequently via plasmid distribution during evolution. GC content and chromosome size were more highly correlated in bacteria (r = 0.460) than in archaea (r = 0.195). Interestingly, there was a tendency for archaea with plasmids to have higher GC content in the chromosome and plasmid than those without plasmids. Thus, the dinucleotide frequency profile of the archaeal plasmids has a bias toward high GC content.","PeriodicalId":73449,"journal":{"name":"International journal of evolutionary biology","volume":"2012 ","pages":"342482"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/342482","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9374564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 69

Deep phylogenetic divergence and lack of taxonomic concordance in species of astronotus (cichlidae). 天蛾属(慈蝇科)种间系统发育差异及分类一致性缺失。

International journal of evolutionary biology Pub Date : 2012-01-01 DOI: 10.1155/2012/915265

Olavo Pinhatti Colatreli, Natasha Verdasca Meliciano, Daniel Toffoli, Izeni Pires Farias, Tomas Hrbek

{"title":"Deep phylogenetic divergence and lack of taxonomic concordance in species of astronotus (cichlidae).","authors":"Olavo Pinhatti Colatreli, Natasha Verdasca Meliciano, Daniel Toffoli, Izeni Pires Farias, Tomas Hrbek","doi":"10.1155/2012/915265","DOIUrl":"https://doi.org/10.1155/2012/915265","url":null,"abstract":"The neotropical cichlid genus Astronotus currently comprises two valid species: A. ocellatus Agassiz, 1831 and A. crassipinnis Heckel, 1840. The diagnosis is based on color pattern and meristics counts. However, body color pattern is highly variable between regions and the meristic counts show a considerable overlap between populations differing in color patterning. They do not represent true synapomorphies that diagnose species. Purportedly the only truly diagnostic character is the presence or absence of one or more ocelli at the base of the dorsal fin, diagnosing A. ocellatus and A. crassipinnis, respectively. Using the 5' portion of the mitochondrial COI gene and EPIC nuclear markers, the validity of the dorsal ocelli as diagnostic character was tested in individuals sampled from ten localities in the Amazon basin. Analyses rejected the hypothesis that dorsal ocelli are diagnostic at the species level. However, they revealed the existence of five hypothetical, largely allopatrically distributed morphologically cryptic species. The phylogeographic structure is not necessarily surprising, since species of the genus Astronotus have sedentary and territorial habits with low dispersal potential. The distribution of these hypothetical species is coincident with patterns observed in other Amazonian aquatic fauna, suggesting the role of common historical processes in generating current biodiversity patterns.","PeriodicalId":73449,"journal":{"name":"International journal of evolutionary biology","volume":"2012 ","pages":"915265"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/915265","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9374987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Microsatellites Cross-Species Amplification across Some African Cichlids. 一些非洲慈鲷的微卫星跨种扩增。

International journal of evolutionary biology Pub Date : 2012-01-01 DOI: 10.1155/2012/870935

Etienne Bezault, Xavier Rognon, Karim Gharbi, Jean-Francois Baroiller, Bernard Chevassus

{"title":"Microsatellites Cross-Species Amplification across Some African Cichlids.","authors":"Etienne Bezault, Xavier Rognon, Karim Gharbi, Jean-Francois Baroiller, Bernard Chevassus","doi":"10.1155/2012/870935","DOIUrl":"https://doi.org/10.1155/2012/870935","url":null,"abstract":"The transfer of the genomic resources developed in the Nile tilapia, Oreochromis niloticus, to other Tilapiines sensu lato and African cichlid would provide new possibilities to study this amazing group from genetics, ecology, evolution, aquaculture, and conservation point of view. We tested the cross-species amplification of 32 O. niloticus microsatellite markers in a panel of 15 species from 5 different African cichlid tribes: Oreochromines (Oreochromis, Sarotherodon), Boreotilapiines (Tilapia), Chromidotilapines, Hemichromines, and Haplochromines. Amplification was successfully observed for 29 markers (91%), with a frequency of polymorphic (P(95)) loci per species around 70%. The mean number of alleles per locus and species was 3.2 but varied from 3.7 within Oreochromis species to 1.6 within the nontilapia species. The high level of cross-species amplification and polymorphism of the microsatellite markers tested in this study provides powerful tools for a wide range of molecular genetic studies within tilapia species as well as for other African cichlids.","PeriodicalId":73449,"journal":{"name":"International journal of evolutionary biology","volume":"2012 ","pages":"870935"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/870935","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9375092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

The genetic basis of female mate preference and species isolation in Drosophila. 果蝇雌性择偶偏好和物种隔离的遗传基础。

International journal of evolutionary biology Pub Date : 2012-01-01 DOI: 10.1155/2012/328392

Meghan Laturney, Amanda J Moehring

{"title":"The genetic basis of female mate preference and species isolation in Drosophila.","authors":"Meghan Laturney, Amanda J Moehring","doi":"10.1155/2012/328392","DOIUrl":"https://doi.org/10.1155/2012/328392","url":null,"abstract":"The processes that underlie mate choice have long fascinated biologists. With the advent of increasingly refined genetic tools, we are now beginning to understand the genetic basis of how males and females discriminate among potential mates. One aspect of mate discrimination of particular interest is that which isolates one species from another. As behavioral isolation is thought to be the first step in speciation, and females are choosy more often than males in this regard, identifying the genetic variants that influence interspecies female mate choice can enhance our understanding of the process of speciation. Here, we review the literature on female mate choice in the most widely used model system for studies of species isolation Drosophila. Although females appear to use the same traits for both within- and between-species female mate choice, there seems to be a different genetic basis underlying these choices. Interestingly, most genomic regions that cause females to reject heterospecific males fall within areas of low recombination. Likely, candidate genes are those that act within the auditory or olfactory system, or within areas of the brain that process these systems.","PeriodicalId":73449,"journal":{"name":"International journal of evolutionary biology","volume":"2012 ","pages":"328392"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2012/328392","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9375481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 40