Results 71 to 80 of about 2,733 (168)
The moulting arthropod: a complete genetic toolkit review
ABSTRACT Exoskeletons are a defining character of all arthropods that provide physical support for their segmented bodies and appendages as well as protection from the environment and predation. This ubiquitous yet evolutionarily variable feature has been instrumental in facilitating the adoption of a variety of lifestyles and the exploitation of ...
Giulia Campli +10 more
wiley +1 more source
Origin and evolution of microvilli
Microvilli are widespread organelles of animal cells that frequently play a role in sensation and feeding. Ansel et al. reconstitute their origin and evolution by performing a broad morphological survey of microvilli in animals and their unicellular relatives, coupled with a bioinformatic study of the phylogenetic distribution of the main microvillar ...
Mylan Ansel +3 more
wiley +1 more source
Developmental and genomic insight into the origin of the tardigrade body plan
Three hypotheses for the homology of tardigrade segments to segments of other panarthropods. H, tardigrade head; T1‐T4, tardigrade trunk segment 1–trunk segment 4. Abstract Tardigrada is an ancient lineage of miniaturized animals. As an outgroup of the well‐studied Arthropoda and Onychophora, studies of tardigrades hold the potential to reveal ...
Frank W. Smith +5 more
wiley +1 more source
Ecdysis in a stem-group euarthropod from the early Cambrian of China
Moulting is a fundamental component of the ecdysozoan life cycle, but the fossil record of this strategy is susceptible to preservation biases, making evidence of ecdysis in soft-bodied organisms extremely rare. Here, we report an exceptional specimen of
Jie Yang +4 more
doaj +1 more source
Maternal age effects on offspring lifespan and reproduction vary within a species
We compared maternal age effects among four strains of rotifers in the Brachionus plicatilis species complex. For each strain, we measured lifespan, reproductive schedule, and lifetime reproductive output of offspring produced by young, middle‐aged, and old mothers.
Alyssa Liguori +4 more
wiley +1 more source
A vital feature in the success of Ecdysozoa is their ability to shed their exoskeleton (a process called ecdysis) such that they can grow or change their morphology.
Do Hee eLee +2 more
doaj +1 more source
Mixed evolutionary origins of endogenous biomass-depolymerizing enzymes in animals
Background Animals are thought to achieve lignocellulose digestion via symbiotic associations with gut microbes; this view leads to significant focus on bacteria and fungi for lignocellulolytic systems.
Wai Hoong Chang, Alvina G. Lai
doaj +1 more source
Palaeontological and Molecular Evidence Linking Arthropods, Onychophorans, and other Ecdysozoa [PDF]
Membership of Arthropoda in a clade of molting animals, the Ecdysozoa, has received a growing body of support over the past 10 years from analyses of DNA sequences from many genes together with morphological characters involving the cuticle and its molting.
openaire +1 more source
Background The new animal phylogeny established several taxa which were not identified by morphological analyses, most prominently the Ecdysozoa (arthropods, roundworms, priapulids and others) and Lophotrochozoa (molluscs, annelids, brachiopods and ...
von Döhren Jörn +4 more
doaj +1 more source
Detailed explorations of the model organisms Caenorhabditis elegans (elegant worm) and Drosophila melanogaster (vinegar fly) have substantially improved our knowledge and understanding of biological processes and pathways in metazoan organisms. Extensive
Túlio L. Campos +4 more
doaj +1 more source

