Katharine E. Criswell
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View article: The skate spiracular organ develops from a unique neurogenic placode that is distinct from lateral line placodes
The skate spiracular organ develops from a unique neurogenic placode that is distinct from lateral line placodes Open
The spiracular organ is an epithelial pouch or tube lined with mechanosensory hair cells that is found embedded in the wall of the spiracle in many non-teleost jawed fishes. It is innervated via a branch of the anterior lateral line nerve …
View article: Structural and developmental insights into the muscles involved in lionfish (<i>Pterois</i> spp.) vocalisations
Structural and developmental insights into the muscles involved in lionfish (<i>Pterois</i> spp.) vocalisations Open
Vocal signalling is an important mode of communication in fishes. The two species of lionfish in the Pterois complex, the Indo‐Pacific lionfish ( Pterois volitans) and the red lionfish ( Pterois miles ), are both known to produce different…
View article: Conservation of rib skeleton regionalization in the homoplastic evolution of the snake-like body form in squamates
Conservation of rib skeleton regionalization in the homoplastic evolution of the snake-like body form in squamates Open
Squamates have independently evolved an elongate, limb-reduced body form numerous times. This transition has been proposed to involve either changes to regulatory gene expression or downstream modification of target enhancers to produce a …
View article: The skate spiracular organ develops from a unique neurogenic placode, distinct from lateral line placodes
The skate spiracular organ develops from a unique neurogenic placode, distinct from lateral line placodes Open
The spiracular organ is an epithelial pouch or tube lined with mechanosensory hair cells, found embedded in the wall of the spiracle/spiracular chamber (remnant of the first pharyngeal cleft) in many non-teleost jawed fishes. It is innerva…
View article: <i>hox</i> gene expression predicts tetrapod-like axial regionalization in the skate, <i>Leucoraja erinacea</i>
<i>hox</i> gene expression predicts tetrapod-like axial regionalization in the skate, <i>Leucoraja erinacea</i> Open
Significance The tetrapod vertebral skeleton is subdivided into distinct regions that are determined by spatial expression of Hox genes in the early embryo. Fishes are thought to lack comparable regionalization, but the relationship betwee…
View article: hox gene expression predicts tetrapod-like axial regionalization in the skate, Leucoraja erinacea
hox gene expression predicts tetrapod-like axial regionalization in the skate, Leucoraja erinacea Open
The axial skeleton of tetrapods is organized into distinct anteroposterior regions of the vertebral column and ribs (cervical, trunk, sacral and caudal), and transitions between these regions are determined by colinear anterior expression …
View article: Conserved and unique transcriptional features of pharyngeal arches in the skate ( <i>Leucoraja erinacea</i> ) and evolution of the jaw
Conserved and unique transcriptional features of pharyngeal arches in the skate ( <i>Leucoraja erinacea</i> ) and evolution of the jaw Open
The origin of the jaw is a long-standing problem in vertebrate evolutionary biology. Classical hypotheses of serial homology propose that the upper and lower jaw evolved through modifications of dorsal and ventral gill arch skeletal elemen…
View article: Conserved and unique transcriptional features of pharyngeal arches in the skate (<i>Leucoraja erinacea</i>) and evolution of the jaw
Conserved and unique transcriptional features of pharyngeal arches in the skate (<i>Leucoraja erinacea</i>) and evolution of the jaw Open
The origin of the jaw is a long-standing problem in vertebrate evolutionary biology. Classical hypotheses of serial homology propose that the upper and lower jaw evolved through modifications of dorsal and ventral gill arch skeletal elemen…
View article: Resegmentation is an ancestral feature of the gnathostome vertebral skeleton
Resegmentation is an ancestral feature of the gnathostome vertebral skeleton Open
The vertebral skeleton is a defining feature of vertebrate animals. However, the mode of vertebral segmentation varies considerably between major lineages. In tetrapods, adjacent somite halves recombine to form a single vertebra through th…
View article: Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment
Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment Open
Animals detect light using opsin photopigments. Xenopsin, a recently classified subtype of opsin, challenges our views on opsin and photoreceptor evolution. Originally thought to belong to the Gαi-coupled ciliary opsins, xenopsins are now …
View article: Resegmentation is an ancestral feature of the gnathostome vertebral skeleton
Resegmentation is an ancestral feature of the gnathostome vertebral skeleton Open
The vertebral skeleton is a defining feature of vertebrate animals. However, the mode of vertebral segmentation varies considerably between major lineages. In tetrapods, adjacent somite halves recombine to form a single vertebra through th…
View article: Author response: Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment
Author response: Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment Open
Article Figures and data Abstract eLife digest Introduction Results Discussion Materials and methods Data availability References Decision letter Author response Article and author information Metrics Abstract Animals detect light using op…
View article: Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment
Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment Open
Animals detect light using opsin photopigments. One recently classified opsin clade, the xenopsins, found in lophotrochozoans, challenges our views on opsin and photoreceptor evolution. Originally thought to belong to the Gαi-coupled cilia…
View article: An early chondrichthyan and the evolutionary assembly of a shark body plan
An early chondrichthyan and the evolutionary assembly of a shark body plan Open
Although relationships among the major groups of living gnathostomes are well established, the relatedness of early jawed vertebrates to modern clades is intensely debated. Here, we provide a new description of Gladbachus , a Middle Devoni…
View article: Embryonic origin of the gnathostome vertebral skeleton
Embryonic origin of the gnathostome vertebral skeleton Open
The vertebral column is a key component of the jawed vertebrate (gnathostome) body plan, but the primitive embryonic origin of this skeleton remains unclear. In tetrapods, all vertebral components (neural arches, haemal arches and centra) …
View article: Trunk neural crest origin of dermal denticles in a cartilaginous fish
Trunk neural crest origin of dermal denticles in a cartilaginous fish Open
Significance The earliest mineralized skeleton of vertebrates was the dermal skeleton: superficial armor of tooth-like skeletal units composed of dentine and basal bone of attachment. Remnants of this dentinous armor have been retained as …