Recent speciation and hybridization in Icelandic deep‐sea isopods: an integrative approach using genomics and proteomics

Genome Analysis of Deep-Sea Thermophilic Phage D6E

Applied and Environmental Microbiology ◽

10.1128/aem.01270-10 ◽

2010 ◽

Vol 76 (23) ◽

pp. 7861-7866 ◽

Cited By ~ 24

Author(s):

Yiqian Wang ◽

Xiaobo Zhang

Keyword(s):

Comparative Genomics ◽

Genome Analysis ◽

Deep Sea ◽

Genomics And Proteomics

ABSTRACT In deep-sea hydrothermsal vent communities, viruses play very important roles. However vent thermophilic bacteriophages remain largely unexplored. In this investigation, a novel vent Geobacillus bacteriophage, D6E, was characterized. Based on comparative genomics and proteomics analyses, the results showed an extensive mosaicism of D6E genome with other mesophilc or thermophilic phages.

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Recent speciation and hybridization in Icelandic deep-sea isopods: an integrative approach using genomics and proteomics

10.22541/au.161773761.10234925/v1 ◽

2021 ◽

Author(s):

Eva Paulus ◽

Saskia Brix ◽

Annabelle Siebert ◽

Pedro Martínez Arbizu ◽

Sven Rossel ◽

...

Keyword(s):

Gene Flow ◽

Laser Scanning ◽

Laser Scanning Microscopy ◽

Integrative Approach ◽

Confocal Laser ◽

Hybrid Zones ◽

Genetic Lineages ◽

Mitochondrial Coi ◽

Genomics And Proteomics ◽

Wide Range

The isopod species Haploniscus bicuspis (G.O. Sars, 1877) shows circum-Icelandic distribution in a wide range of environmental conditions and along well-known geographic barriers, such as the Greenland-Iceland-Faroe (GIF) Ridge. We wanted to explore population genetics, phylogeography and cryptic speciation as well as to investigate whether previously described, but unaccepted subspecies have any merit. Using the same set of specimens, we combined mitochondrial COI sequences, thousands of nuclear loci (ddRAD), and proteomic profiles, plus selected morphological characters using Confocal Laser Scanning Microscopy (CLSM). Five divergent genetic lineages were identified by COI and ddRAD, two south and three north of the GIF Ridge. Assignment of populations to the three northern lineages varied and detailed analyses revealed hybridization and gene flow between them, suggesting a single northern species with a complex phylogeographic history. No apparent hybridization was observed among lineages south of the Ridge, inferring the existence of two more species. Differences in proteomic profiles between the three putative species were minimal, implying an ongoing or recent speciation process. Population differentiation was high, even among closely associated populations, and higher in mitochondrial COI than nuclear ddRAD loci. Gene flow is apparently male-biased, leading to hybrid zones and instances of complete exchange of the local nuclear genome through immigrating males. This study did not confirm the existence of subspecies defined by male characters, which probably characterize different male developmental stages present in all species.

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Perceptions of a Collaborative Professional Learning Program: Seeing the “Bigger Picture”

Perspectives of the ASHA Special Interest Groups ◽

10.1044/2019_persp-19-00041 ◽

2020 ◽

Vol 5 (1) ◽

pp. 290-303

Author(s):

P. Charlie Buckley ◽

Kimberly A. Murza ◽

Tami Cassel

Keyword(s):

Data Analysis ◽

Professional Learning ◽

Social Communication ◽

Special Educators ◽

Service Providers ◽

Integrative Approach ◽

Theory Approach ◽

Learning Program ◽

Speech Language Pathologists ◽

Related Service

Purpose The purpose of this study was to explore the perceptions of special education practitioners (i.e., speech-language pathologists, special educators, para-educators, and other related service providers) on their role as communication partners after participation in the Social Communication and Engagement Triad (Buckley et al., 2015 ) yearlong professional learning program. Method A qualitative approach using interviews and purposeful sampling was used. A total of 22 participants who completed participation in either Year 1 or Year 2 of the program were interviewed. Participants were speech-language pathologists, special educators, para-educators, and other related service providers. Using a grounded theory approach (Glaser & Strauss, 1967 ) to data analysis, open, axial, and selective coding procedures were followed. Results Three themes emerged from the data analysis and included engagement as the goal, role as a communication partner, and importance of collaboration. Conclusions Findings supported the notion that educators see the value of an integrative approach to service delivery, supporting students' social communication and engagement across the school day but also recognizing the challenges they face in making this a reality.

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