Results 31 to 40 of about 1,635 (199)

Reynolds number limits for jet propulsion: A numerical study of simplified jellyfish [PDF]

, 2010
The Scallop Theorem states that reciprocal methods of locomotion, such as jet propulsion or paddling, will not work in Stokes flow (Reynolds number = 0).
Herschlag, Gregory, Miller, Laura A.
core   +3 more sources

Modeling neck mobility in fossil turtles [PDF]

, 2014
Turtles have the unparalleled ability to retract their heads and necks within their shell but little is known about the evolution of this trait. Extensive analysis of neck mobility in turtles using radiographs, CT scans, and morphometry reveals that ...
Anquentin, Anquentin, Brinkman, Christian, Christian, Cobley, de Queiroz, Dzemski, Gaffney, Gaffney, Gaffney, Gaffney, Geomagic_Inc, Hay, Herrel, Hoffstetter, Jaekel, Jones, Joyce, Joyce, Joyce, Li, Lyson, Lyson, Matzke, Müller, Młynarski, Nagashima, Nesbitt, Ogushi, Rieppel, Romer, Samman, Schwarz-Wings, Snively, Sterli, Sterli, Stevens, Taylor, Thomson, Tsuihiji, Vaillant, Vaillant, Van Damme, van der Leeuw, van der Leeuw, Wedel, Weisgram, Weisgram, Werneburg, Werneburg, Werneburg, Wild, Williams, Witmer   +54 more
core   +1 more source

Hydromedusae: Pandeidae, Tiarannidae [PDF]

Journal of the Marine Biological Association of the United Kingdom, 1955
The nematocysts of the three species of Leptomedusae, Aequorea forskalea, A. vitrina, and A. pensilis, and of the two siphonophores Agalma elegans and Velella velella are described.The specific characters of the three species of Aequorea are discussed and it is shown that A.
openaire   +3 more sources

Deep-water Hydromedusae from the Lacaze-Duthiers submarine canyon (Banyuls, northwestern Mediterranean) and description of two new genera, Guillea and Parateclaia

Scientia Marina, 2000
Several species of hydromedusae are reported from material collected by sediment traps placed in the Lacaze-Duthiers submarine canyon, off Banyuls (north-western Mediterranean). Two new taxa Guillea canyonincolae gen. nov. et sp. nov.
J. Bouillon, F. Pagès, J. M. Gili, A. Palanques, P. Puig, S. Heussner   +5 more
doaj   +1 more source

Estimating dispersal and gene flow in the neotropical freshwater turtle Hydromedusa maximiliani (Chelidae) by combining ecological and genetic methods

Genetics and Molecular Biology, 2002
Hydromedusa maximiliani is a vulnerable neotropical freshwater turtle endemic to mountainous regions of the Atlantic rainforest in southeastern Brazil.
Franco L. Souza, Anderson F. Cunha, Marcos A. Oliveira, Gonçalo A.G. Pereira, Sérgio F. dos Reis   +4 more
doaj   +1 more source

Ptychogena lactea A. Agassiz, 1865 (Hydrozoa; Laodiceidae): What We Know on Taxonomy, Life-Cycle and Distribution

Taxonomy, 2022
The hydromedusa Ptychogena lactea A. Agassiz, 1865 is a large and remarkable jellyfish; it has been found in many Arctic and even boreal localities and at various depths, from the mesopelagial to the surface.
Alexander E. Antsulevich
doaj   +1 more source

Checklist of freshwater symbiotic temnocephalans (Platyhelminthes, Rhabditophora, Temnocephalida) from the Neotropics [PDF]

, 2014
Fil: Martínez-Aquino, Andrés. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología Invertebrados; ArgentinaFil: Brusa, Francisco. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo.
Brusa, Francisco, Damborenea, María Cristina, Martínez-Aquino, Andrés   +2 more
core   +2 more sources

A New Species of Zanclea innocens and New Record of Zanclea medusopolypata (Hydrozoa, Anthoathecata) from Japan

Taxonomy
Cnidarian jellyfish (Medusozoa) comprise approximately 3800 known species which play important roles for marine ecosystem. This study aimed to understand the diversity of cnidarian jellyfish and symbiosis among marine organisms.
Sho Toshino, Gaku Yamamoto, Yuichi Nozoe, Hisashi Akiyama   +3 more
doaj   +1 more source

Passive Energy Recapture in Jellyfish Contributes to Propulsive Advantage over other Metazoans [PDF]

, 2013
Gelatinous zooplankton populations are well known for their ability to take over perturbed ecosystems. The ability of these animals to outcompete and functionally replace fish that exhibit an effective visual predatory mode is counterintuitive because ...
Colin, Sean, Costello, John H., Dabiri, John O., Gemmell, Brad J., Priya, Shashank, Stewart, Colin J., Tafti, Danesh   +6 more
core   +3 more sources

Karyotypic characterization of Hydromedusa tectifera (Testudines, Pleurodira) from the upper Iguaçu River in the Brazilian state of Paraná

Genetics and Molecular Biology, 2006
We present the karyotypic characterization of 26 specimens of the side-necked turtle Hydromedusa tectifera collected in the upper Iguaçu River, Paraná state, Brazil.
Rafael Bueno Noleto, Daniel Luis Zanella Kantek, Ana Cláudia Swarça, Ana Lúcia Dias, Alberto Sergio Fenocchio, Marta Margarete Cestari   +5 more
doaj   +1 more source