Results 61 to 70 of about 1,635 (199)

The Hunger Games: Stable Isotopes Indicate Winter Inter‐Guild Competition for Resources by Marine Meso‐Predators in the Sub‐Arctic North Pacific

open access: yesEcology and Evolution, Volume 14, Issue 11, November 2024.
There is high niche overlap and potential for competition between Pacific salmon and non‐salmonid meso‐predators in the open ocean during winter. Food web structure and the level of niche overlap varied spatially and depending on the species. The biomass of the competitor species may exceed that of Pacific salmon, with potential implications for ...
Genyffer C. Troina   +4 more
wiley   +1 more source

Variation Among Hydromedusæ

open access: yesScience, 1900
THE announcement of Bateson ('94), that "in the whole range of natural history there is no more striking case of the discontinuity and perfection of meristic variation than in the genus Sarsia, and the further proposition whether it is a mere coincidence that the specimens presenting this variation, so rare among the free-swimming Hydromedusae, should ...
openaire   +4 more sources

Fluorescence patterns and diversity of hydrozoans from Bocas del Toro, Panama

open access: yesCiencias Marinas
Many metazoans contain molecules capable of fluorescence, the absorption and re-emission of light. Since the anatomical distribution, or patterning, of these molecules is variable across taxa, patterns of fluorescence may serve as a powerful diagnostic ...
Lara M Beckmann   +5 more
doaj   +1 more source

Novo registro altitudinal de Trichodactylus fluviatilis (Latreille, 1828) (Decapoda, Trichodactylidae) no Brasil - DOI: 10.4025/actascibiolsci.v31i3.785

open access: yesActa Scientiarum: Biological Sciences, 2009
Trichodactylus fluviatilis (Latreille, 1828) (Decapoda, Trichodactylidae) é uma espécie de caranguejo que habita rios e riachos montanhosos em altitudes até aproximadamente 500 m.
Samuel Campos Gomides   +4 more
doaj   +1 more source

Functional Characteristics of Nematocysts Found on the Scyphomedusa Cyanea Capillata [PDF]

open access: yes, 2007
Although prey capture by cnidarians is mediated through nematocysts, their influence on prey selection by cnidarians remains poorly documented. The difficulty in visualizing nematocyst–prey interactions remains the chief obstacle to understanding how the
Colin, Sean, Costello, John H.
core   +1 more source

High‐Resolution Longitudinal eDNA Metabarcoding and Morphological Tracking of Planktonic Threats to Salmon Aquaculture

open access: yesEnvironmental DNA, Volume 6, Issue 5, September–October 2024.
In the current study, we present and assess an exhaustive approach to identify the planktonic drivers of farmed Atlantic salmon complex gill disease (CGD) and fish mortality. We explored delayed or “lagged” effects of plankton abundances on gill health and undertook a comparison of environmental DNA (eDNA) metabarcoding and microscopy in their ability ...
María Algueró‐Muñiz   +15 more
wiley   +1 more source

First record of the invasive stinging medusa Gonionemus vertens in the southern hemisphere (Mar del Plata, Argentina)

open access: yesLatin American Journal of Aquatic Research, 2014
In this paper we report the first finding of the hydromedusa Gonionemus vertens Agassiz, 1862 in the southern hemisphere. About 30 newly released medusae were found within an aquarium on September 2008. The aquarium contained benthic samples collected in
Carolina S Rodriguez   +3 more
doaj  

Underwater turning movement during foraging in Hydromedusa maximiliani (Testudines, Chelidae) from southeastern Brazil

open access: yesBrazilian Journal of Biology
A type of locomotor behavior observed in animals with rigid bodies, that can be found in many animals with exoskeletons, shells, or other forms of body armor, to change direction, is the turning behavior.
O Rocha-Barbosa   +5 more
doaj   +1 more source

The topological organization of the turtle cranium is constrained and conserved over long evolutionary timescales

open access: yesThe Anatomical Record, Volume 307, Issue 8, Page 2713-2748, August 2024.
Abstract The cranium of turtles (Testudines) is characterized by the secondary reduction of temporal fenestrae and loss of cranial joints (i.e., characteristics of anapsid, akinetic skulls). Evolution and ontogeny of the turtle cranium are associated with shape changes.
Eve Miller   +3 more
wiley   +1 more source

Effect of growth conditions on production of green fluorescent protein from escherichia coli fermentation [PDF]

open access: yes, 2014
Effect of growth conditions (temperature, agitation rate and working volume) on production of enhanced green fluorescent protein (EGFP) from Escherichia coli (E.coli) fermentation was studied in this research.
Malini, Subramaniam
core  

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