Results 61 to 70 of about 2,376 (198)

Zooplankton Distribution and Community Structure in the Pacific and Atlantic Sectors of the Southern Ocean during Austral Summer 2017–18: A Pilot Study Conducted from Ukrainian Long-Liners

open access: yesJournal of Marine Science and Engineering, 2020
Preliminary results of the pilot study of the zooplankton in the region between the Ross and Scotia Seas from November 2017 to April 2018 are presented. In total, 53 zooplankton samples were collected in the top 100 m water layer using vertical tows of a
Evgeny A. Pakhomov   +5 more
doaj   +1 more source

Turbulence and hypoxia contribute to dense biological scattering layers in a Patagonian fjord system [PDF]

open access: yesOcean Science, 2018
The aggregation of plankton species along fjords can be linked to physical properties and processes such as stratification, turbulence and oxygen concentration.
I. Pérez-Santos   +17 more
doaj   +1 more source

Predation Strategies of the Portuguese Man‐of‐War Physalia physalis

open access: yesMarine Ecology, Volume 46, Issue 6, November/December 2025.
ABSTRACT The Portuguese man‐of‐war Physalia physalis is widely known for causing poisoning on human beings. Physalia physalis is mostly described as a predator of fish eggs and larvae. Here, we report for the first time that large fish can also be preyed by P. physalis.
Jorge L. S. Nunes   +8 more
wiley   +1 more source

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

Chemotaxis of Arbacia punctulata spermatozoa to resact, a peptide from the egg jelly layer [PDF]

open access: yes, 1985
Resact, a peptide of known sequence isolated from the jelly layer of Arbacia punctulata eggs, is a potent chemoattractant for A. punctulata spermatozoa. The chemotactic response is concentration dependent, is abolished by pretreatment of the spermatozoa ...
Brokaw, Charles J.   +3 more
core   +3 more sources

Microbial and Metazoan Activity in Monterey Bay, CA Recorded in Nitrogen Isotope Ratios of Sinking and Suspended Particles

open access: yesJournal of Geophysical Research: Oceans, Volume 130, Issue 10, October 2025.
Abstract Particulate organic matter supports pelagic food webs, and the activity of these food webs attenuates the flux of carbon into the ocean interior. Understanding the extent to which microbial and metazoan heterotrophs influence particle dynamics is essential to describing the biological carbon pump and nutrient delivery to deep ecosystems.
S. C. Doherty   +3 more
wiley   +1 more source

Two New Calycophorae, Siphonophorae [PDF]

open access: yes, 1968
Volume: 22Start Page: 340End Page ...
Alvarino, Angeles
core  

Mortality of Calanus helgolandicus: Sources, differences between the sexes and consumptive and nonconsumptive processes [PDF]

open access: yes, 2018
While losses from mortality are as important as gains from reproduction in zooplankton population dynamics, the former are more challenging to quantify.
Atkinson, A   +4 more
core   +2 more sources

Visual information in the dark: Bioluminescence and perceptual design through evolution

open access: yesFunctional Ecology, Volume 39, Issue 10, Page 2611-2625, October 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Bioluminescence offers a powerful framework for understanding how organisms evolve to shape visual information in diverse ways. Complementing studies of colour, transparency and pattern in illuminated environments, bioluminescent systems instead rely on generated light,
Todd H. Oakley
wiley   +1 more source

Archangelopsis jagoa, a new species of benthic siphonophore (Physonectae, Rhodaliidae) collected by submersible in the Red Sea [PDF]

open access: yes, 1995
A new species of rhodaliid siphonophore, Archangelopsis jagoa sp, nov., is described from three specimens collected at depths between 250 and 370 m in the Gulf of Akaba, Red Sea, by the submersible JAGO.
Hissmann, Karen   +2 more
core  

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