Results 31 to 40 of about 1,465 (171)
Scientia 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 +1 more source
Occurrence, inter-annual variability and zooplankton-predation impact of the invasive ctenophore Mnemiopsis leidyi and the native jellyfish Aurelia aurita in Limfjorden (Denmark) in 2010 and 2011 [PDF]
, 2012 In 2007, the invasive ctenophore Mnemiopsis leidyi was observed for the first time in Limfjorden (Denmark) where it exhibited mass occurrence in late summer while the indigenous and usually dominating common jellyfish, Aurelia aurita, was nearly absent ...
Jaspers, Cornelia +3 more
core +1 more source
Rapid evolution of the compact and unusual mitochondrial genome in the ctenophore, Pleurobrachia bachei [PDF]
Molecular Phylogenetics and Evolution, 2012 Ctenophores are one of the most basally branching lineages of metazoans with the largest mitochondrial organelles in the animal kingdom. We sequenced the mitochondrial (mtDNA) genome from the Pacific cidipid ctenophore, Pleurobrachia bachei. The circular mitochondrial genome is 11,016 nts, with only 12 genes, and one of the smallest metazoan mtDNA ...
Andrea B, Kohn +5 more
openaire +2 more sources
Distinct gelatinous zooplankton communities across a dynamic shelf sea
Limnology and Oceanography, Volume 64, Issue 4, Page 1802-1818, July 2019., 2019 Abstract Understanding how gelatinous zooplankton communities are structured by local hydrography and physical forcing has important implications for fisheries and higher trophic predators. Although a large body of research has described how fronts, hydrographic boundaries, and different water masses (e.g., mixed vs. stratified) influence phytoplankton
Damien Haberlin +3 more
wiley +1 more source
Zooglider: An autonomous vehicle for optical and acoustic sensing of zooplankton
Limnology and Oceanography: Methods, Volume 17, Issue 1, Page 69-86, January 2019., 2019 Abstract We present the design and preliminary results from ocean deployments of Zooglider, a new autonomous zooplankton‐sensing glider. Zooglider is a modified Spray glider that includes a low‐power camera (Zoocam) with telecentric lens and a custom dual frequency Zonar (200 and 1000 kHz). The Zoocam quantifies zooplankton and marine snow as they flow
Mark D. Ohman +6 more
wiley +1 more source
Limnology and Oceanography, Volume 63, Issue 4, Page 1741-1761, July 2018., 2018 Abstract While losses from mortality are as important as gains from reproduction in zooplankton population dynamics, the former are more challenging to quantify. We used two approaches to provide complementary insights into the mortality of a biomass‐dominant copepod, Calanus helgolandicus, at Station L4 in the English Channel.
Jacqueline L. Maud +4 more
wiley +1 more source
The phylogenetic position of ctenophores and the origin(s) of nervous systems [PDF]
, 2015 Ctenophores have traditionally been treated as eumetazoans, but some recent whole genome studies have revived the idea that they are, rather, the sister group to all other metazoans.
Jákely, Gáspár +2 more
core +3 more sources
International Journal of Oceanography, Volume 2015, Issue 1, 2015., 2015 Ctenophores exist throughout the Northeast U.S. Continental Shelf Ecosystem, but the underlying mechanisms that control ctenophore populations at this scale are not clear. Ctenophore population data over the last 30 years coincides with changes in several water masses on the shelf, but discovering which water mass was most influential was problematic ...
Rebecca Sparks +3 more
wiley +1 more source
The influence of the Atlantic and regional climate variability on the long-term changes in gelatinous carnivore populations in the northwestern Mediterranean [PDF]
, 2008 We investigated potential connections between climate and the population size of gelatinous carnivores in the northwestern Mediterranean. The interannual variability of large- and meso-scale climate factors was related to gelatinous carnivore dynamics by
Buecher, E. +2 more
core +1 more source
International Journal of Oceanography, Volume 2014, Issue 1, 2014., 2014 Previous descriptions have noted that the stomach samples of spiny dogfish, Squalus acanthias, showed a major increase in the overall occurrence and hence implied abundance of Ctenophora. This apparent and persistent gelatinous zooplankton outbreak is increasingly more common in the world’s oceans.
Michael D. Ford +2 more
wiley +1 more source