Results 61 to 70 of about 2,159 (212)

ParaHox Genes Revisited: From Gut Patterning to Integrated Axial and Neural Organization in Rotifera

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 346, Issue 4, Page 357-369, June 2026.
In rotifers, ParaHox genes show a dispersed genomic organization, with Xlox absent across gnathiferans. Exclusive neuronal expression of Gsx and Cdx reveals that ancestral ParaHox genes coordinated neural and epithelial development beyond gut patterning, suggesting an integrated role in early bilaterian body plan organization.
Andreas C. Fröbius, David B. Mark Welch, Holger Herlyn   +2 more
wiley   +1 more source

Still Enigmatic: Innate Immunity in the Ctenophore Mnemiopsis leidyi

, 2019
Innate immunity is an ancient physiological response critical for protecting metazoans from invading pathogens. It is the primary pathogen defense mechanism among invertebrates.
Browne, William E, Traylor-Knowles, Nikki, Vandepas, Lauren E   +2 more
core   +1 more source

Regeneration in the ctenophore Mnemiopsis leidyi occurs in the absence of a blastema, requires cell division, and is temporally separable from wound healing

BMC Biology, 2019
Background The ability to regenerate is a widely distributed but highly variable trait among metazoans. A variety of modes of regeneration has been described for different organisms; however, many questions regarding the origin and evolution of these ...
Julia Ramon-Mateu, S. Tori Ellison, Thomas E. Angelini, Mark Q. Martindale   +3 more
doaj   +1 more source

Acoustic evidence for topographic blocking on a steep submarine canyon wall

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Abstract Diel vertical migration (DVM) is the largest mass‐movement of animals on Earth, with profound ecological and biogeochemical consequences. DVM has mostly been studied in the open ocean; however, at steep slopes, pelagic animals including vertical migrators must contend with the seafloor, emphasizing the importance of understanding DVM in these ...
Astrid B. Leitner, Chad M. Waluk, Kim R. Reisenbichler, Rob E. Sherlock, Bruce H. Robison, Kelly J. Benoit‐Bird   +5 more
wiley   +1 more source

Distribution and reproduction of the Arctic ctenophore Mertensia ovum in the Baltic Sea [PDF]

, 2013
Species identification based on morphological characteristics has caused misidentifications and led to twisted views of abundances and roles of ctenophores.
Vuorinen, I., Katajisto, Tarja, Välipakka, P., Setala, Outi, Setälä, O, Lehtiniemi, Maiju, Haslob, Holger, Vuorinen, Ilppo, Gorokhova, E., Schaber, Matthias, Majaneva, S, Bolte, Sören, Gorokhova, E, Reusch, Thorsten B. H., Huwer, B., Valipakka, Pentti, Setälä, O., Reusch, Thorsten B.H., Põllumäe, A, Põllumäe, A., Lehtiniemi, M., Lennuk, L., Lehtiniemi, M, Pollumaee, Arno, Lennuk, L, Välipakka, P, Schaber, M, Viitasalo-Frösén, S., Gorokhova, Elena,, Huwer, Bastian, Katajisto, T., Bolte, S, Katajisto, T, Majaneva, Sanna, Huwer, B, Reusch, TBH, Viitasalo-Frosen, Satu, Majaneva, S., Schaber, M., Vuorinen, I, Viitasalo-Frösén, S, Lennuk, Lennart, Haslob, H   +42 more
core   +1 more source

Maneuverability and agility measurements for the simulated motor volume of a lobate ctenophore.

, 2023
Maneuverability and agility measurements for the simulated motor volume of a lobate ctenophore.
Adrian Herrera-Amaya (17409977), Margaret L. Byron (17409980)   +1 more
core   +1 more source

Feeding Behavior of Juvenile Notothenia rossii marmorata FISCHER at South Georgia Station

Antarctic Record, 1979
The feeding behavior of juveniles of Notothenia rossii marmorata was investigated by the examination of stomach contents of three fish and by the field observation.
Takao HOSHIAI
doaj   +1 more source

Lim homeobox genes in the Ctenophore Mnemiopsis leidyi: the evolution of neural cell type specification

EvoDevo, 2012
Background Nervous systems are thought to be important to the evolutionary success and diversification of metazoans, yet little is known about the origin of simple nervous systems at the base of the animal tree.
Simmons David K, Pang Kevin, Martindale Mark Q   +2 more
doaj   +1 more source

Sex Determination in Sponges

Molecular Reproduction and Development, Volume 93, Issue 6, June 2026.
ABSTRACT Sex determination in Porifera remains one of the least understood aspects of early metazoan biology despite the group's key phylogenetic position. Sponges display exceptional diversity in sexual systems—ranging from stable gonochorism to sequential hermaphroditism and sex reversal—yet lack morphological dimorphism and any discrete gonadal ...
Jose M. Lorente‐Sorolla, Ana Riesgo
wiley   +1 more source

Phosphorescence in ctenophores

Journal of Experimental Zoology, 1905
Mode of access: Internet.
openaire   +2 more sources