Gigantyczne ryby z głębin

Evidence: — • authority: 92

Novel insights into microbial DMSP/DMS cycling: from surface to deep ocean.. The microbial cycling of dimethylsulfoniopropionate (DMSP) and dimethyl sulfide (DMS) constitutes a crucial component of the global sulfur cycle, influencing climate regulation through the release of climate-active gases. Since DMSP production has historically been attributed to planktonic algae, research on its cycling has consequently centered on the surface ocean. However, the continuous discovery of bacterial DMSP synthesis genes ( dsyB , mmtN, and dsyGD ) has confirmed that the DMSP/DMS cycling process may also exist in the aphotic deep-sea environment. Further supporting this, the recently identified hydrogen…

Evidence: — • authority: 92

Milestones in <i>Vibrio</i> Science and their Contributions to Microbiology and Global Health.. Background: Vibrio , a group of Gram‑negative bacteria found in the ocean, has become a significant global threat, intensified by climate change, owing to its crucial roles in environmental, human, and animal health. Research on these bacteria and the diseases they cause has greatly influenced scientific progress, resulting in major advancements in the fields of microbiology, epidemiology, and public health. Objectives: This review aims to highlight the early groundbreaking discoveries in Vibrio research, particularly those that have significantly impacted the science of microbiology…

Evidence: — • authority: 92

Host-Associated Biofilms: <i>Vibrio fischeri</i> and Other Symbiotic Bacteria Within the Vibrionaceae.. Biofilm formation is important for microbial survival, adaptation, and persistence within mutualistic and pathogenic systems in the Vibironaceae. Biofilms offer protection against environmental stressors, immune responses, and antimicrobial treatments by increasing host colonization and resilience. This review examines the mechanisms of biofilm formation in Vibrio species, focusing on quorum sensing, cyclic-di-GMP signaling, and host-specific adaptations that influence biofilm structure and function. We discuss how biofilms differ between mutualistic and pathogenic species bas…

Evidence: — • authority: 92

The <i>Siphamia-Photobacterium</i> symbiosis: a binary vertebrate model for host-microbe interactions.. SUMMARYAs microbial communities are increasingly recognized as central to animal development and health, simplified animal models have become valuable tools for exploring the complex dynamics of these interactions. The mutualism between siphonfish ( Siphamia spp.) and the bioluminescent bacterium Photobacterium mandapamensis offers a naturally occurring, binary, gut-associated symbiosis within a vertebrate host that is a promising system for investigating host-microbe interactions. Over the past decade, the application of genomic, ecological, and microbiological approaches has…

Evidence: — • authority: 88

The Deep Network - Curating and co-producing quality ocean-education information for adults. The Deep Network is an initiative which brings together multidisciplinary practitioners who in some way support adults outside of formal learning environments. Deep Network members are supporting adults to become ocean literate and effectively motivating learners to actively participate in pro-climate action and marine sustainability. To achieve the ambitious targets set out in the SDGs, our adult population must learn not only to recognise economic, social, and environmental challenges but also act upon this knowledge. In this session, we will present specific barriers that adult learners experienc…

Evidence: — • authority: 72

Siphonophores (from Ancient Greek σίφων (siphōn), meaning "tube" and -φόρος (-phóros), meaning "bearing") are cnidarian animals of the hydrozoan order Siphonophorae. According to the World Register of Marine Species, the order contains 194 species described thus far. Siphonophores are highly polymorphic and complex organisms, which blur the line between individual organisms ("regular" animals, built from organs and cells) and colonial organisms (e.g., corals, where each polyp can in principle live on its own). Each specimen is composed of medusoid and polypoid zooids that are morphologically and functionally specialized. Zooids are multicellular units that develop from a single fertilized e…

Evidence: — • authority: 72

Deep-sea fish are fish that live in the darkness below the sunlit surface waters, that is below the epipelagic or photic zone of the sea. The lanternfish is, by far, the most common deep-sea fish. Other deep-sea fishes include the flashlight fish, cookiecutter shark, bristlemouths, anglerfish, viperfish, and some species of eelpout. Only about 2% of known marine species inhabit the pelagic environment. This means that they live in the water column as opposed to the benthic organisms that live in or on the sea floor. Deep-sea organisms generally inhabit bathypelagic (1–4 km; 0.62–2.49 mi deep) and abyssopelagic (4–6 km; 2.5–3.7 mi deep) zones. However, characteristics of deep-sea organisms,…

Evidence: — • authority: 72

Marine microorganisms are defined by their habitat as microorganisms living in a marine environment, that is, in the saltwater of a sea or ocean or the brackish water of a coastal estuary. A microorganism (or microbe) is any microscopic living organism or virus, which is invisibly small to the unaided human eye without magnification. Microorganisms are very diverse. They can be single-celled or multicellular and include bacteria, archaea, viruses, and most protozoa, as well as some fungi, algae, and animals, such as rotifers and copepods. Many macroscopic animals and plants have microscopic juvenile stages. Some microbiologists also classify viruses as microorganisms, but others consider th…

Evidence: — • authority: 72

Hydrothermal vents are fissures on the seabed from which geothermally heated water discharges. They are commonly found near volcanically active places, areas where tectonic plates are moving apart at mid-ocean ridges, ocean basins, and hotspots. The dispersal of hydrothermal fluids throughout the global ocean at active vent sites creates hydrothermal plumes. Hydrothermal deposits are rocks and mineral ore deposits formed by the action of hydrothermal vents. Hydrothermal vents exist because the Earth is both geologically active and has large amounts of water on its surface and within its crust. Under the sea, they may form features called black smokers or white smokers, which deliver a wide…

Evidence: — • authority: 72

The deep sea is broadly defined as the ocean depth where light begins to fade, at an approximate depth of 200 m (660 ft) or the point of transition from continental shelves to continental slopes. Conditions within the deep sea are a combination of low temperatures, darkness, and high pressure. The deep sea is considered the least explored Earth biome as the extreme conditions make the environment difficult to access and explore. Organisms living within the deep sea have a variety of adaptations to survive in these conditions. Organisms can survive in the deep sea through a number of feeding methods including scavenging, predation and filtration, with a number of organisms surviving by feedi…

Evidence: — • authority: 72

Bioluminescent bacteria are light-producing bacteria that are predominantly present in sea water, marine sediments, the surface of decomposing fish and in the gut of marine animals. While not as common, bacterial bioluminescence is also found in terrestrial and freshwater bacteria. Bioluminescent bacteria may be free-living (such as Vibrio harveyi) or in symbiosis with animals such as the Hawaiian Bobtail squid (Aliivibrio fischeri) or terrestrial nematodes (Photorhabdus luminescens). The host organisms provide bioluminescent bacteria a safe home and sufficient nutrition. In exchange, the hosts use the light produced by the bacteria for camouflage, prey and/or mate attraction. Bioluminescen…

Evidence: — • authority: 72

Bioluminescence is the production of light by an organism as the result of a chemiluminescence reaction. It occurs in a wide variety of organisms, including marine vertebrates and invertebrates, terrestrial arthropods such as fireflies, some fungi, and microorganisms such as some bacteria and dinoflagellates. In some animals, the light is bacteriogenic, produced by symbiotic bacteria such as those from the genus Vibrio; in others, it is autogenic, produced by the animals themselves. Bioluminescence has evolved independently at least 94 times, first emerging in octocorals some 540 million years ago. In most cases, the principal chemical reaction in bioluminescence involves the reaction of a…