Results 21 to 30 of about 9,138 (199)

Planktonic associations between medusae (classes Scyphozoa and Hydrozoa) and epifaunal crustaceans [PDF]

open access: yesPeerJ, 2021
Jellyfish are known to carry various epibionts, including many of the subphylum Crustacea. However, the associations between gelatinous zooplankton and other invertebrates have been chronically overlooked.
Kaden Muffett, Maria Pia Miglietta
doaj   +2 more sources

Evidence of Cnidarians sensitivity to sound after exposure to low frequency underwater sources [PDF]

open access: yes, 2016
Jellyfishes represent a group of species that play an important role in oceans, particularly as a food source for different taxa and as a predator of fish larvae and planktonic prey.
André, Michel   +5 more
core   +5 more sources

On the enigma of Palaenigma wrangeli (Schmidt), a conulariid with a partly non-mineralized skeleton [PDF]

open access: yesPeerJ, 2021
Palaenigma wrangeli (Schmidt) is a finger-sized fossil with a tetraradiate conical skeleton; it occurs as a rare component in fossiliferous Upper Ordovician strata of the eastern Baltic Basin and is known exclusively from north Estonia.
Björn Kröger   +5 more
doaj   +2 more sources

Estado actual del conocimiento de la medusa bola de cañón (Stomolophus meleagris)

open access: yesEpistemus, 2022
Las medusas son un grupo taxonómico de los más ancestrales dentro de la filogenia animal. Han habitado el planeta aproximadamente hace 500 millones de años sobreviviendo ante múltiples eventos de extinciones masivas, lo que las convierte en un grupo de ...
Carlos Daniel Sastré Velásquez   +3 more
doaj   +1 more source

Medusae and ctenophores from the Bahia Blanca Estuary and neighboring inner shelf (Southwest Atlantic Ocean, Argentina) [PDF]

open access: yes, 2017
An updated checklist of medusae and ctenophores is presented for the first time for the area comprised by the Bahía Blanca Estuary, the adjacent shelf El Rincón and Monte Hermoso beach, on the southwest coast of Buenos Aires province (Argentina).
Dutto, María Sofía   +5 more
core   +1 more source

Cnidom analysis combined with an in vitro evaluation of the lytic, cyto- and neurotoxic potential of Cyanea capillata (Cnidaria: Scyphozoa)

open access: yesScientia Marina, 2012
The cnidocysts and the lytic, cyto- and neurotoxic potency of a large specimen of Cyanea capillata (L.) with 55 cm umbrella diameter were compared with those of a pooled C.
Heike Helmholz   +5 more
doaj   +1 more source

Not all jellyfish are equal: isotopic evidence for inter- and intraspecific variation in jellyfish trophic ecology [PDF]

open access: yes, 2015
Jellyfish are highly topical within studies of pelagic food-webs and there is a growing realisation that their role is more complex than once thought.
Fleming, Nicholas E.C.   +3 more
core   +3 more sources

Compartments in Scyphozoa

open access: yesThe International Journal of Developmental Biology, 2007
Polyps of Scyphozoa have a cup-shaped body. At one end is the mouth opening surrounded by tentacles, at the other end is an attachment disc. The body wall consists of two tissue layers, the ectoderm and the endoderm, which are separated by an extracellular matrix, the mesoglea.
Stefan, Berking, Klaus, Herrmann
openaire   +3 more sources

Medusan Morphospace: Phylogenetic Constraints, Biomechanical Solutions, and Ecological Consequences [PDF]

open access: yes, 2008
Medusae were the earliest animals to evolve muscle-powered swimming in the seas. Although medusae have achieved diverse and prominent ecological roles throughout the world\u27s oceans, we argue that the primitive organization of cnidarian muscle tissue ...
Ahlborn   +114 more
core   +2 more sources

Questioning the rise of gelatinous zooplankton in the World's oceans [PDF]

open access: yes, 2012
During the past several decades, high numbers of gelatinous zooplankton species have been reported in many estuarine and coastal ecosystems. Coupled with media-driven public perception, a paradigm has evolved in which the global ocean ecosystems are ...
Acuña   +81 more
core   +4 more sources

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