Cassandra G. Extavour Department of Organismic and Evolutionary Biology and Department of Molecular and Cellular Biology Harvard University Biography Publications Institution JoVE Articles Cassandra G. Extavour has not added a biography. If you are Cassandra G. Extavour and would like to personalize this page please email our Author Liaison for assistance. Publications Hox Genes Limit Germ Cell Formation in the Short Germ Insect Proceedings of the National Academy of Sciences of the United States of America. Aug, 2019 | Pubmed ID: 31346080 Insect Egg Size and Shape Evolve with Ecology but Not Developmental Rate Nature. 07, 2019 | Pubmed ID: 31270484 A Dataset of Egg Size and Shape from More Than 6,700 Insect Species Scientific Data. 07, 2019 | Pubmed ID: 31270334 Reproductive Capacity Evolves in Response to Ecology Through Common Changes in Cell Number in Hawaiian Drosophila Current Biology : CB. Jun, 2019 | Pubmed ID: 31130459 Ancestral and Offspring Nutrition Interact to Affect Life-history Traits in Drosophila Melanogaster Proceedings. Biological Sciences. Feb, 2019 | Pubmed ID: 30963851 Molecular Evolutionary Trends and Feeding Ecology Diversification in the Hemiptera, Anchored by the Milkweed Bug Genome Genome Biology. 04, 2019 | Pubmed ID: 30935422 Selection Shapes Turnover and Magnitude of Sex-biased Expression in Drosophila Gonads BMC Evolutionary Biology. 02, 2019 | Pubmed ID: 30786879 Contrasting Patterns of Molecular Evolution in Metazoan Germ Line Genes BMC Evolutionary Biology. 02, 2019 | Pubmed ID: 30744572 High-throughput Live-imaging of Embryos in Microwell Arrays Using a Modular Specimen Mounting System Biology Open. Jul, 2018 | Pubmed ID: 29712638 Corrigendum to "Bone Morphogenetic Protein (BMP) Signaling in Animal Reproductive System Development and Function" [Dev. Biol. 427(2) (2017) 258-269] Developmental Biology. 12, 2017 | Pubmed ID: 28992992 Convergent Evolution of Germ Granule Nucleators: A Hypothesis Stem Cell Research. 10, 2017 | Pubmed ID: 28801028 Expression and Function of Spineless Orthologs Correlate with Distal Deutocerebral Appendage Morphology Across Arthropoda Developmental Biology. 10, 2017 | Pubmed ID: 28764892 The House Spider Genome Reveals an Ancient Whole-genome Duplication During Arachnid Evolution BMC Biology. 07, 2017 | Pubmed ID: 28756775 Rapid Evolution of Ovarian-Biased Genes in the Yellow Fever Mosquito () Genetics. 08, 2017 | Pubmed ID: 28630112 Causes and Evolutionary Consequences of Primordial Germ-cell Specification Mode in Metazoans Proceedings of the National Academy of Sciences of the United States of America. 06, 2017 | Pubmed ID: 28584112 Bone Morphogenetic Protein (BMP) Signaling in Animal Reproductive System Development and Function Developmental Biology. 07, 2017 | Pubmed ID: 28284906 Editorial Overview: Developmental Mechanisms, Patterning and Evolution: New Models for Genetics and Development - Diversity at Last Current Opinion in Genetics & Development. 08, 2016 | Pubmed ID: 28314394 Refuting the Hypothesis That the Acquisition of Germ Plasm Accelerates Animal Evolution Nature Communications. 08, 2016 | Pubmed ID: 27577604 Editorial Overview: Development, Regulation and Evolution of Organ Systems Current Opinion in Insect Science. Feb, 2016 | Pubmed ID: 27436561 A Premeiotic Function for Boule in the Planarian Schmidtea Mediterranea Proceedings of the National Academy of Sciences of the United States of America. 06, 2016 | Pubmed ID: 27330085 Expression-Linked Patterns of Codon Usage, Amino Acid Frequency, and Protein Length in the Basally Branching Arthropod Parasteatoda Tepidariorum Genome Biology and Evolution. 09, 2016 | Pubmed ID: 27017527 The Transcriptional Repressor Blimp-1 Acts Downstream of BMP Signaling to Generate Primordial Germ Cells in the Cricket Gryllus Bimaculatus Development (Cambridge, England). Jan, 2016 | Pubmed ID: 26786211 Embryonic Development of the Cricket Gryllus Bimaculatus Developmental Biology. Mar, 2016 | Pubmed ID: 25907229 Codon and Amino Acid Usage Are Shaped by Selection Across Divergent Model Organisms of the Pancrustacea G3 (Bethesda, Md.). Sep, 2015 | Pubmed ID: 26384771 The Significance and Scope of Evolutionary Developmental Biology: a Vision for the 21st Century Evolution & Development. May-Jun, 2015 | Pubmed ID: 25963198 A Conserved Genetic Mechanism Specifies Deutocerebral Appendage Identity in Insects and Arachnids Proceedings. Biological Sciences. Jun, 2015 | Pubmed ID: 25948691 The Hippo Pathway Regulates Homeostatic Growth of Stem Cell Niche Precursors in the Drosophila Ovary PLoS Genetics. Feb, 2015 | Pubmed ID: 25643260 Vasa and Piwi Are Required for Mitotic Integrity in Early Embryogenesis in the Spider Parasteatoda Tepidariorum Developmental Biology. Jun, 2015 | Pubmed ID: 25257304 The First Myriapod Genome Sequence Reveals Conservative Arthropod Gene Content and Genome Organisation in the Centipede Strigamia Maritima PLoS Biology. Nov, 2014 | Pubmed ID: 25423365 Hox Gene Duplications Correlate with Posterior Heteronomy in Scorpions Proceedings. Biological Sciences. Oct, 2014 | Pubmed ID: 25122224 A Comprehensive Reference Transcriptome Resource for the Common House Spider Parasteatoda Tepidariorum PloS One. 2014 | Pubmed ID: 25118601 BMP Signaling is Required for the Generation of Primordial Germ Cells in an Insect Proceedings of the National Academy of Sciences of the United States of America. Mar, 2014 | Pubmed ID: 24591634 Insulin Signalling Underlies Both Plasticity and Divergence of a Reproductive Trait in Drosophila Proceedings. Biological Sciences / The Royal Society. Mar, 2014 | Pubmed ID: 24500165 Patterns of Molecular Evolution of the Germ Line Specification Gene Oskar Suggest That a Novel Domain May Contribute to Functional Divergence in Drosophila Development Genes and Evolution. Mar, 2014 | Pubmed ID: 24407548 Subdivision of Arthropod Cap-n-collar Expression Domains is Restricted to Mandibulata EvoDevo. 2014 | Pubmed ID: 24405788 Identification of a Putative Germ Plasm in the Amphipod Parhyale Hawaiensis EvoDevo. 2013 | Pubmed ID: 24314239 Distal-less and Dachshund Pattern Both Plesiomorphic and Apomorphic Structures in Chelicerates: RNA Interference in the Harvestman Phalangium Opilio (Opiliones) Evolution & Development. Jul-Aug, 2013 | Pubmed ID: 23809698 Live Long and Prosper: Germline Stem Cell Maintenance Revisited (retrospective on DOI: 10.1002/bies.201000085) BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology. Sep, 2013 | Pubmed ID: 23801082 Evidence Against a Germ Plasm in the Milkweed Bug Oncopeltus Fasciatus, a Hemimetabolous Insect Biology Open. Jun, 2013 | Pubmed ID: 23789106 Developmental Gene Discovery in a Hemimetabolous Insect: De Novo Assembly and Annotation of a Transcriptome for the Cricket Gryllus Bimaculatus PloS One. 2013 | Pubmed ID: 23671567 Germ Cell Specification Requires Zygotic Mechanisms Rather Than Germ Plasm in a Basally Branching Insect Current Biology : CB. May, 2013 | Pubmed ID: 23623552 ASGARD: an Open-access Database of Annotated Transcriptomes for Emerging Model Arthropod Species Database : the Journal of Biological Databases and Curation. 2012 | Pubmed ID: 23180770 Evolution of the Chelicera: a Dachshund Domain is Retained in the Deutocerebral Appendage of Opiliones (Arthropoda, Chelicerata) Evolution & Development. Nov-Dec, 2012 | Pubmed ID: 23134210 Oskar Predates the Evolution of Germ Plasm in Insects Current Biology : CB. Dec, 2012 | Pubmed ID: 23122849 Convergent Evolution of a Reproductive Trait Through Distinct Developmental Mechanisms in Drosophila Developmental Biology. Dec, 2012 | Pubmed ID: 23022298 Hox Gene Expression in the Harvestman Phalangium Opilio Reveals Divergent Patterning of the Chelicerate Opisthosoma Evolution & Development. Sep, 2012 | Pubmed ID: 22947318 The Roles of Cell Size and Cell Number in Determining Ovariole Number in Drosophila Developmental Biology. Mar, 2012 | Pubmed ID: 22200592 De Novo Assembly and Characterization of a Maternal and Developmental Transcriptome for the Emerging Model Crustacean Parhyale Hawaiensis BMC Genomics. 2011 | Pubmed ID: 22118449 Notch/Delta Signalling is Not Required for Segment Generation in the Basally Branching Insect Gryllus Bimaculatus Development (Cambridge, England). Nov, 2011 | Pubmed ID: 22028033 Patterns of Cell Lineage, Movement, and Migration from Germ Layer Specification to Gastrulation in the Amphipod Crustacean Parhyale Hawaiensis Developmental Biology. Nov, 2011 | Pubmed ID: 21827744 Long-lost Relative Claims Orphan Gene: Oskar in a Wasp PLoS Genetics. Apr, 2011 | Pubmed ID: 21552332 Counting in Oogenesis Cell and Tissue Research. May, 2011 | Pubmed ID: 21384182 The Maternal and Early Embryonic Transcriptome of the Milkweed Bug Oncopeltus Fasciatus BMC Genomics. 2011 | Pubmed ID: 21266083 The Molecular Machinery of Germ Line Specification Molecular Reproduction and Development. Jan, 2010 | Pubmed ID: 19790240 Are We There Yet? Tracking the Development of New Model Systems Trends in Genetics : TIG. Jul, 2008 | Pubmed ID: 18514356 Injektion af Gryllus-bimaculatus -æg Samantha K. Barry1, Taro Nakamura2, Yuji Matsuoka3, Christoph Straub4, Hadley W. Horch4, Cassandra G. Extavour5 1Colby College, 2Division of Evolutionary Developmental Biology, National Institute for Basic Biology, 3Department of Biological Sciences, National University of Singapore, 4Department Biology and Department of Neuroscience, Bowdoin College, 5Department of Organismic and Evolutionary Biology and Department of Molecular and Cellular Biology, Harvard University JoVE 59726 Developmental Biology
Injektion af Gryllus-bimaculatus -æg Samantha K. Barry1, Taro Nakamura2, Yuji Matsuoka3, Christoph Straub4, Hadley W. Horch4, Cassandra G. Extavour5 1Colby College, 2Division of Evolutionary Developmental Biology, National Institute for Basic Biology, 3Department of Biological Sciences, National University of Singapore, 4Department Biology and Department of Neuroscience, Bowdoin College, 5Department of Organismic and Evolutionary Biology and Department of Molecular and Cellular Biology, Harvard University JoVE 59726 Developmental Biology