A5042659370- Insect and Arachnid Ecology and Behavior
- Neurobiology and Insect Physiology Research
- Developmental Biology and Gene Regulation
- Animal Behavior and Reproduction
- Hemiptera Insect Studies
- Plant Molecular Biology Research
- Insect-Plant Interactions and Control
- Insect symbiosis and bacterial influences
- Amphibian and Reptile Biology
- Genomics and Phylogenetic Studies
- Morphological variations and asymmetry
- Evolution and Paleontology Studies
- Insects and Parasite Interactions
- Insect Resistance and Genetics
- Fossil Insects in Amber
- Lepidoptera: Biology and Taxonomy
- RNA Research and Splicing
- Chromosomal and Genetic Variations
- Animal Ecology and Behavior Studies
- Physiological and biochemical adaptations
- Cephalopods and Marine Biology
- Genomics and Chromatin Dynamics
- Paleontology and Evolutionary Biology
- Spider Taxonomy and Behavior Studies
- Plant and animal studies
Hebrew University of Jerusalem
2015-2025
National Library of Israel
2013-2023
Google (United States)
2016-2023
Ariel University
2023
Institute of Life Sciences
2020
University of Cambridge
2002-2009
Myriapods (e.g., centipedes and millipedes) display a simple homonomous body plan relative to other arthropods. All members of the class are terrestrial, but they attained terrestriality independently insects. Myriapoda is only arthropod not represented by sequenced genome. We present an analysis genome centipede Strigamia maritima. It retains compact that has undergone less gene loss shuffling than previously arthropods, many orthologues genes conserved from bilaterian ancestor have been...
Abstract Background Arthropods comprise the largest and most diverse phylum on Earth play vital roles in nearly every ecosystem. Their diversity stems part from variations a conserved body plan, resulting recorded adaptive changes genome. Dissection of genomic record sequence change enables broad questions regarding genome evolution to be addressed, even across hyper-diverse taxa within arthropods. Results Using 76 whole sequences representing 21 orders spanning more than 500 million years...
Abstract Background The Hemiptera (aphids, cicadas, and true bugs) are a key insect order, with high diversity for feeding ecology excellent experimental tractability molecular genetics. Building upon recent sequencing of hemipteran pests such as phloem-feeding aphids blood-feeding bed bugs, we present the genome sequence comparative analyses centered on milkweed bug Oncopeltus fasciatus , seed feeder family Lygaeidae. Results 926-Mb is well represented by current assembly official gene set....
Evippinae (Araneae, Lycosidae) is a subfamily of old-world lycosids, comprising six genera and 67 species, most them typically found in xeric habitats. Although Israel located between the two distribution-centers subfamily, Africa central Asia, only species genus Evippa Simon, 1882, namely E. arenaria (Audouin, 1826) praelongipes (O. Pickard-Cambridge, 1871), doubtful record Xerolycosa nemoralis (Westring, 1861) were reported previously. Here we describe new species: amitaii sp. nov.,...
Abstract Constraints are factors that limit evolutionary change. A subset of constraints is developmental, and acts during embryonic development. There some uncertainty about how to define developmental constraints, formulate them as testable hypotheses. Furthermore, concepts such constraint‐breaking, universal forbidden morphologies present conceptual difficulties. One our aims clarify these issues. After briefly reviewing current classifications constraint, we those affecting morphogenetic...
Relatively little is known about the diversity of embryonic development across lineages spiders, even though study a primary step in evo-devo studies and essential for understanding phenotypic evolution. Practically nothing embryogenesis cave-dwelling animals which play an important role cave ecosystems may have remarkable adaptations to aphotic habitats such as loss eyes. Here, we describe expression patterns several genes Retinal Determination Network (RDN) troglophile (species that...
Summary Geophilomorph centipedes exhibit a number of unique characteristics that make them particular developmental and evolutionary interest. Segment numbers in geophilomorphs are higher than any other centipedes, ranging from 27 to 191. They may be constant within species, presenting extreme form the “counting” problem development, or they vary—a situation provides us with opportunity study naturally occurring variation segment numbers. All their segments generated during embryogenesis,...
Segments are formed simultaneously in the blastoderm of fly Drosophila melanogaster through a hierarchical cascade interacting transcription factors. Conversely, many insects and all non-insect arthropods most segments sequentially from posterior. We have looked at segmentation milkweed bug Oncopeltus fasciatus. Posterior sequentially, what is probably ancestral arthropod mechanism. Formation anterior bears similarities to mode. These appear nearly blastoderm, via that involves orthologues...
Segmentation is fundamental to the arthropod body plan. Understanding evolutionary steps by which arthropods became segmented being transformed integration of data from developmental biology (evo-devo), Cambrian fossils that allow stepwise acquisition segmental characters be traced in stem-group, and incorporation into an increasingly well-supported phylogenetic framework for extant based on genomic-scale datasets. Both evo-devo palaeontology make novel predictions about evolution...
The anterior-most unit of the crown-group arthropod body plan includes three segments, pre-gnathal that contain neuromeres together comprise brain. Recent work on development this anterior region has shown its units exhibit many developmental differences to more posterior extent they should not be considered serial homologs. Building revised understanding we suggest a novel scenario for head evolution. We posit an expansion ancestral single-segmented at transition from Radiodonta Deuteropoda...
The evolution of arthropod segment number provides us with a paradox, because, whereas there is more than 20-fold variation in this character overall, most classes and orders arthropods are composed species that lack any the segments. So, what origin higher-level variation? centipede order Geophilomorpha unusual exception one its families, all exhibit intraspecific number. Hence it an opportunity to investigate how may change microevolutionary context. Here, we show can be directly altered...
SUMMARY The process of head development in insects utilizes a set widely conserved genes, but this and its evolution are not well understood. Recent data from Tribolium castaneum have provided baseline for an understanding insect development. However, work on wider range species, including members the hemimetabolous orders, is needed order to draw general conclusions about differentiation regionalization. We cloned studied expression function number candidate genes hemipteran Oncopeltus...
We describe the dynamic process of abdominal segment generation in milkweed bug Oncopeltus fasciatus. present detailed morphological measurements growing germband throughout segmentation. Our data are complemented by cell division profiles and expression patterns key genes, including invected even-skipped as markers for different stages formation. mechanistic changes growth zone nascent segments during individual segmentation, examine relative contribution newly formed versus existing tissue...
Our understanding of the genetics arthropod body plan development originally stems from work on Drosophila melanogaster late 1970s and onward. In Drosophila, there is a relatively detailed model for network gene interactions that proceeds in sequential-hierarchical fashion to define main features plan. Over years, we have growing networks involved defining an increasing number species. It now becoming possible tease out conserved aspects these try reconstruct their evolution. this...
Abstract Background Our understanding of the early evolution arthropod body plan has recently improved significantly through advances in phylogeny and developmental biology new interpretations fossil record. However, there been limited effort to synthesize data from these different sources. Bringing an embryological perspective into record is a useful way integrate knowledge disciplines single coherent view evolution. Results I have used current on development extant arthropods, together...
One of the best studied developmental processes is Drosophila segmentation cascade. However, this cascade generally considered to be highly derived and unusual, with segments being patterned simultaneously, rather than ancestral sequential mode. We present a detailed analysis milkweed bug Oncopletus fasciatus, an insect more primitive mode, as comparison Drosophila, aim reconstructing evolution modes. document expression 12 genes, representing different phases in process. Using double...
Signaling networks are redeployed across different developmental times and places to generate phenotypic diversity from a limited genetic toolkit. Hormone signaling in particular have well-studied roles multiple processes. In insects, the ecdysone pathway controls critical events late embryogenesis throughout post-embryonic development. While this has not been shown function earliest stage of embryonic development model insect Drosophila melanogaster, one component network, nuclear receptor...