Results 61 to 70 of about 1,483 (201)

Rapid Decreases and Performance Declines in Northeast Pacific Seamount Foundation Species Detected in an Oxygen Minimum Zone

open access: yesGlobal Change Biology, Volume 32, Issue 4, April 2026.
Across 12 long‐term monitoring sites on three Northeast Pacific seamounts, 163 of 844 cold‐water coral and sponge individuals were lost between surveys 3–5 years apart, with abundance declining at five sites and condition (i.e., health) declining at nine.
Lindsay Clark   +3 more
wiley   +1 more source

FIGURE 1 in Diversity of marine bryozoans inhabiting demosponges in northeastern Brazil

open access: yes, 2017
FIGURE 1. Map of the study area in Bahia State (BA), northeastern Brazil. Sponges were collected at Todos os Santos Bay and Camamu Bay.Published as part of Almeida, Ana C. S., Souza, Facelucia B.
Souza, Facelucia B. C.   +7 more
core   +1 more source

On the dissolution of sponge silica: Assessing variability and biogeochemical implications

open access: yesFrontiers in Marine Science, 2022
The dissolution of the biogenic silica that constitutes the skeletons of silicifying organisms is an important mechanism for regenerating dissolved silicon in the ocean.
Manuel Maldonado   +8 more
doaj   +1 more source

Associations of Commercial Fisheries and Cold‐Water Corals and Sponges

open access: yesFish and Fisheries, Volume 27, Issue 2, Page 116-129, March 2026.
Three metrics for determining whether the marine life that are landed by commercial fisheries are associated with cold‐water corals and sponges: (a) Adjacent; (b) General Proximity; and (c) Habitat. The relationship between these structure forming invertebrates (SFI) and fisheries is robust across analytical approaches.
Jennifer Coyle Selgrath   +2 more
wiley   +1 more source

RNA interference in marine and freshwater sponges [PDF]

open access: yes, 2011
Background: The marine sponge Tethya wilhelma and the freshwater sponge Ephydatia muelleri are emerging model organisms to study evolution, gene regulation, development, and physiology in non-bilaterian animal systems. Thus far, functional methods (i.e.,
Posfai, Dora   +12 more
core   +1 more source

Eocene phymaraphiniid demosponges from South Western Australia: filling the gap

open access: yesActa Palaeontologica Polonica, 2023
We describe two new genera of phymaraphiniid lithistid sponges Twertupia gen. nov. and Pickettispongia gen. nov. from the upper Eocene Pallinup Formation of South Western (SW) Australia based on new, rich and very well preserved material. Type material
ANDRZEJ PISERA   +2 more
doaj   +1 more source

First Report on Chitin in a Non-Verongiid Marine Demosponge: The Mycale euplectellioides Case

open access: yesMarine Drugs, 2018
Sponges (Porifera) are recognized as aquatic multicellular organisms which developed an effective biochemical pathway over millions of years of evolution to produce both biologically active secondary metabolites and biopolymer-based skeletal structures ...
Sonia Żółtowska-Aksamitowska   +13 more
doaj   +1 more source

Arrested in Glass: Actin within Sophisticated Architectures of Biosilica in Sponges

open access: yesAdvanced Science, 2022
Actin is a fundamental member of an ancient superfamily of structural intracellular proteins and plays a crucial role in cytoskeleton dynamics, ciliogenesis, phagocytosis, and force generation in both prokaryotes and eukaryotes.
Hermann Ehrlich   +18 more
doaj   +1 more source

Genomic Connectivity and Adaptation Signals of the Freshwater Sponge Ephydatia muelleri Across Its Distribution

open access: yesJournal of Biogeography, Volume 53, Issue 1, January 2026.
ABSTRACT Aim Genetic connectivity and local adaptation were examined across the distribution of the freshwater sponge Ephydatia muelleri. Because it occupies an exceptional breadth of freshwater environments across a broad geographic range, this species offers key insights into biogeographic processes shaping genetic structure and adaptation in inland ...
Laura de la Cruz‐Castillejo   +18 more
wiley   +1 more source

FIGURES 66–71. Microporella curta n in Diversity of marine bryozoans inhabiting demosponges in northeastern Brazil

open access: yes, 2017
FIGURES 66–71. Microporella curta n. sp., UFBA 1580, holotype, Bahia State, Brazil. 66, Group of autozooids; 67, Detail of autozooid with four oral spines and a single avicularium; 68, Detail of D-shaped primary orifice and reniform ascopore; 69, Detail ...
Souza, Facelucia B. C.   +3 more
core   +1 more source

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