Results 1 to 10 of about 140 (72)

Long-term changes in the planktonic cnidarian community in a mesoscale area of the NW Mediterranean. [PDF]

open access: yesPLoS ONE, 2018
In the present work, possible long-term changes in the planktonic cnidarian community were investigated by analyzing (1) species and community spatial distribution patterns, (2) variations in abundance and (3) changes in species richness during three ...
Elena Guerrero   +4 more
doaj   +3 more sources

Biodiversity and frequency of occurrence of jellyfish (cnidaria) in Al Hoceima Bay (North coast of Morocco, Alboran Sea) [PDF]

open access: yesE3S Web of Conferences, 2023
Jellyfish are the best-known group of gelatinous zooplankton; they refer to organisms from the phylum Cnidaria, including animals with cnidocytes (stinging cells).
Benyoub B.   +4 more
doaj   +2 more sources

Phylogenetics of swimming behaviour in Medusozoa: the role of giant axons and their possible evolutionary origin.

open access: yesJ Exp Biol, 2022
Although neural tissues in cnidarian hydroids have a nerve net structure, some cnidarian medusae contain well-defined nerve tracts. As an example, the hydrozoan medusa Aglantha digitale has neural feeding circuits that show an alignment and condensation,
Meech RW.
europepmc   +2 more sources

Omnivory by the small cosmopolitan hydromedusa Aglaura hemistoma [PDF]

open access: yesLimnology and Oceanography, 2005
We investigated the feeding of the small hydromedusa, Aglaura hemistoma(bell diameter , 4 mm), to determine if it occupies a trophic position similar to that of large medusae. Feeding was examined using gut-content analysis of preserved and unpreserved medusae and by analyzing prey-capture events using microvideographic techniques.
Colin, Sean   +3 more
openaire   +2 more sources

Diel Vertical Dynamics of Gelatinous Zooplankton (Cnidaria, Ctenophora and Thaliacea) in a Subtropical Stratified Ecosystem (South Brazilian Bight). [PDF]

open access: yesPLoS ONE, 2015
The diel vertical dynamics of gelatinous zooplankton in physically stratified conditions over the 100-m isobath (~110 km offshore) in the South Brazilian Bight (26°45'S; 47°33'W) and the relationship to hydrography and food availability were analyzed by ...
Miodeli Nogueira Júnior   +2 more
doaj   +2 more sources

High spatial heterogeneity of two planktonic cnidarian species related to the variability of a shelf-slope front at short time scales

open access: yesScientia Marina, 2016
We investigated the variability in the mesoscale distribution of the siphonophore Muggiaea atlantica and the hydromedusa Aglaura hemistoma in relation to the rapid spatial oscillations of the shelf-slope front off the Catalan coast (NW Mediterranean ...
Elena Guerrero   +4 more
doaj   +2 more sources

Estructura poblacional del zooplancton gelatinoso en el mar ecuatoriano

open access: yesRevista Científica de Ciencias Naturales y Ambientales, 2019
El presente estudio analiza la composición y distribución del zooplancton gelatinoso en el mar ecuatoriano desde Julio 2017 hasta Abril 2018. Se dividió el perfil costero en dos zonas: la ZI abarcó la provincia de Esmeraldas hasta la parte norte de la ...
Paulina Castillo   +2 more
doaj   +2 more sources

Interannual variation in the composition of the assemblages of medusae and ctenophores in St. Helena Bay, Southern Benguela Ecosystem

open access: yesScientia Marina, 2000
The assemblages of medusae and ctenophores were examined from samples collected each winter from St Helena Bay, over the 10-year period 1988-1997.
Emmanuelle Buecher, Mark John Gibbons
doaj   +2 more sources

Distribución y ecología de medusas y sifonóforos en tres estaciones de la zona marino costera de la Península de Santa Elena, Ecuador

open access: yesRevista Científica y Tecnológica UPSE, 2019
Con la finalidad de incrementar el conocimiento sobre los cnidarios se estudió la composición, distribución, abundancia y ecología de la comunidad de medusas y sifonóforos durante la época húmeda desde diciembre del 2015 a mayo del 2016 en seis ...
Katherine Mujica Rodríguez   +1 more
doaj   +2 more sources

Influence of Lunar Periodicity on Medusae (Cnidaria) Composition in a Western Caribbean Reef: Community Structure Before Sargassum Blooms

open access: yesDiversity
The medusae of the Mahahual reef, in the Mexican Caribbean Sea, were studied to document changes in species composition and abundance over a lunar cycle in 2001–2002.
Edgar Tovar-Juárez   +3 more
doaj   +2 more sources

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