Results 41 to 50 of about 1,110 (176)

Not All Ctenophores Are Bioluminescent: Pleurobrachia

The Biological Bulletin, 1995
The traditional view has been that all species of the phylum Ctenophora are capable of producing light. Our inability to elicit luminescence from members of the well-known genus Pleurobrachia, as well as a lack of published documentation, led to an effort to determine whether this genus is truly bioluminescent.
Haddock, Steven H. D. (Steven Harold David),‏ ‎, Case, James F.   +1 more
openaire   +4 more sources

From the sea to DNA barcode: Optimized preservation method for gelatinous zooplankton integrative taxonomy

Limnology and Oceanography: Methods, EarlyView.
Abstract Assigning taxonomic identity and thus assessing taxonomic diversity in gelatinous zooplankton is challenging due to their fragility and difficult preservation. Formalin fixation compromises DNA integrity, while flash‐freezing, ethanol, and acetone preservation affect morphological features. In this study, we developed a methodological protocol
Claudia Traboni, Rade Garić, Rita Marino, Paolo Sordino, Priscilla Licandro   +4 more
wiley   +1 more source

Records of ctenophores from South Africa

PeerJ, 2021
Although ctenophores can be conspicuous components of the plankton in coastal marine ecosystems, only six species have been formally described from around South Africa. Using photographs from local community scientists, we add a further three species ( Cestum veneris, Beroe forskalii ?,
Gibbons, Mark J., Haddock, Steve H.D., Matsumoto, George I., Foster, Craig   +3 more
openaire   +3 more sources

Nuclear receptors from the ctenophore Mnemiopsis leidyi lack a zinc-finger DNA-binding domain: lineage-specific loss or ancestral condition in the emergence of the nuclear receptor superfamily?

EvoDevo, 2011
Background Nuclear receptors (NRs) are an ancient superfamily of metazoan transcription factors that play critical roles in regulation of reproduction, development, and energetic homeostasis.
Reitzel Adam M, Pang Kevin, Ryan Joseph F, Mullikin James C, Martindale Mark Q, Baxevanis Andreas D, Tarrant Ann M   +6 more
doaj   +1 more source

Concurrent tunable structural color, luminescence, and afterglow in single ZnS: X@SiO2 spheres via SiO2‐nanoarmor and calcination decoupling collaborative strategy

Smart Molecules, EarlyView.
For the first time, tunable structural color, luminescence, and afterglow are integrated into single ZnS:X@SiO2 spheres via a SiO2‐nanoarmor and calcination decoupling strategy, achieving 250–410 nm monodisperse wurtzite spheres with 91% phase conversion, 12.8% PLQY, and 12.27 s afterglow. Abstract The integration of structural color, photoluminescence,
Tianyi Liu, Rou Meng, Shufen Zhang, Suli Wu   +3 more
wiley   +1 more source

Contrasting Food Web Dynamics Across Oceanographic Boundaries in Subarctic Pelagic Ecosystems

Fisheries Oceanography, EarlyView.
ABSTRACT Understanding the structure of pelagic food webs across multiple trophic levels is critical for elucidating species interactions, energy flow, and anthropogenic impacts on production. This study presents a comprehensive analysis of the eastern North Pacific pelagic food webs, focusing on the Gulf of Alaska (GoA) during late winter of 2019.
Genyffer C. Troina, Evgeny A. Pakhomov, Laurie Weitkamp, Brian P. V. Hunt   +3 more
wiley   +1 more source

Circadian regulation of reproduction and neoblast cell division in the catenulid flatworm Stenostomum virginianum (Platyhelminthes)

Photochemistry and Photobiology, EarlyView.
The circadian clock and melatonin coordinate homeostasis in many animals, yet their influence on reproduction and neoblast proliferation has only been shown in triclads. This study demonstrates that the early‐branching catenulid Stenostomum virginianum contains photoreceptive refractile bodies, synthesizes endogenous melatonin, and that exogenous ...
Daniel L. Stanton, Ian D. Deas, J. Kennon Smith, Samuel B. Robinson, Adam M. Reitzel, Julian P. S. Smith III   +5 more
wiley   +1 more source

Molecular diversity of benthic ctenophores (Coeloplanidae) [PDF]

Scientific Reports, 2017
AbstractCoeloplanidae, the largest family of benthic ctenophores, comprises 33 species, all described based on traditional morphological characteristics, such as coloration, length, and number of aboral papillae, which are highly variable and can be affected by fixation methods and environmental conditions.
Ada Alamaru, Bert W. Hoeksema, Sancia E. T. van der Meij, Dorothée Huchon   +3 more
openaire   +3 more sources

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

The ctenophore Beroe cf. ovata in the Caspian Sea. The beginning of a new stage in the evolution of the Caspian ecosystem?

Юг России: экология, развитие, 2021
Aim. Analysis of the first data regarding the arrival of the predatory ctenophore Beroe cf. ovata in the Caspian Sea and assessment of possible effects of its introduction for the Caspian ecosystem.Material and Methods.
S. V. Vostokov, A. A. Gadzhiev, A. S. Vostokova, N. I. Rabazanov   +3 more
doaj   +1 more source