Antero-posterior patterning in the brittle star Amphipholis squamata and the evolution of echinoderm body plans [PDF]
EvoDevoAlthough the adult pentaradial body plan of echinoderms evolved from a bilateral ancestor, identifying axial homologies between the morphologically divergent echinoderms and their bilaterian relatives has been an enduring problem in zoology.
L. Formery +4 more
doaj +3 more sources
Having cake and eating too: The benefits of an intermediate larval form in a brittle star Amphiodia sp. opaque (Ophiuroidea). [PDF]
Ecol Evol, 2023 We describe an unusual brittle star larva that represents an intermediate evolutionary stage between feeding and nonfeeding larvae. Larvae of this species are capable of feeding, but can forego food and make a juvenile. Offspring that ate as larvae had shortened development times, higher percent metamorphosis, larger size, and longer juvenile survival ...
Nakata NN, Emlet RB.
europepmc +2 more sources
Genetic variation in the brooding brittle-star: a global hybrid polyploid complex? [PDF]
Royal Society Open ScienceThe widespread and abundant brooding brittle-star (Amphipholis squamata) is a simultaneous hermaphrodite with a complex mitochondrial phylogeography of multiple divergent overlapping mtDNA lineages, high levels of inbreeding or clonality and unusual ...
Andrew F. Hugall +2 more
doaj +2 more sources
Comparison of the complete mitochondrial genome of Phyllophorus liuwutiensis (Echinodermata: Holothuroidea: Phyllophoridae) to that of other sea cucumbers. [PDF]
FEBS Open Bio, 2020 In this paper, we analyzed the mitochondrial genome of Phyllophorus liuwutiensis. We examined genome composition, base composition, codon usage of protein‐coding genes and gene arrangement. In addition, we compared the gene arrangements of six echinoderms, revealing that the gene order of P. liuwutiensis was a new arrangement.
Yang F +10 more
europepmc +2 more sources
Description of a Novel Symbiotic Bacterium from the Brittle Star, Amphipholis squamata [PDF]
Applied and Environmental Microbiology, 1990 A gram-negative, marine, facultatively anaerobic bacterial isolate designated strain AS-1 was isolated from the subcuticular space of the brittle star, Amphipholis squamata. Its sensitivity to O/129 and novobiocin, overall morphology, and biochemical characteristics and the moles percent guanine-plus-cytosine ...
M. Lesser, R. Blakemore
semanticscholar +4 more sources
Experimental evidence of subsurface feeding by the burrowing ophiuroid Amphipholis gracillima (Echinodermata) [PDF]
Marine Ecology Progress Series, 1999 Knowledge of the feeding habits of infaunal deposit-feeders is essential to understand their role in the movement of sediment-bound material and nutrients and in trophic transfer. Depositfeeding ophiuroids are abundant in the world's oceans but many details of their intricate feeding behaviors are unknown.
M. Gielazyn, S. Stancyk, W. Piegorsch
semanticscholar +2 more sources
EMBRYONIC DEVELOPMENT OF THE BRITTLE-STAR AMPHIPHOLIS KOCHII IN LABORATORY CULTURE
The Biological Bulletin, 1985 The embryonic development of the brittle-star Amphipholis kochii, from fertilization through metamorphosis, was observed in a laboratory culture. Oocytes from spawning induced by a sudden change of sea water temperature remain in the first meiotic ...
M. Yamashita
semanticscholar +3 more sources
The Biological Bulletin, 1977 1. The distribution of luminescence in Ophiopsila californica and Amphipholis squamata is described on the basis of image intensification, fluorescence microscopy, and histological techniques. 2. Luminescence appears to be intracellular. 3.
P. Brehm, J. Morin
semanticscholar +4 more sources
Evolution; International Journal of Organic Evolution, 2002 Renate Sponer, M. S. Roy
exaly +2 more sources