Results 81 to 90 of about 6,474 (222)

The phylogenetic position of ctenophores and the origin(s) of nervous systems [PDF]

open access: yes, 2015
Ctenophores have traditionally been treated as eumetazoans, but some recent whole genome studies have revived the idea that they are, rather, the sister group to all other metazoans.
Jákely, Gáspár   +2 more
core   +3 more sources

Metazoan Diversity and Its Drivers: An eDNA Survey in the Pacific Gateway of a Changing Arctic Ocean

open access: yesEnvironmental DNA, Volume 7, Issue 2, March/April 2025.
In the face of climate change, organisms must adapt or shift their ranges to survive. Our study conducted the first COI marker‐based eDNA survey in the Pacific Gateway of the Arctic Ocean, analyzing seawater samples from the Bering Strait and Chukchi Sea.
Gerlien Verhaegen   +4 more
wiley   +1 more source

Parallel evolution of gravity sensing

open access: yesFrontiers in Cell and Developmental Biology
Omnipresent gravity affects all living organisms; it was a vital factor in the past and the current bottleneck for future space exploration. However, little is known about the evolution of gravity sensing and the comparative biology of gravity reception.
Daria Y. Romanova   +2 more
doaj   +1 more source

Is the Presence of Jellyfish Problematic or Beneficial?

open access: yesWalailak Journal of Science and Technology, 2013
Jellyfish are a diverse group of animals. The group consists of Chordata, Ctenophora and, mainly, Cnidaria. Jellyfish are often thought to be harmful, but few can cause fatality in humans.
Udomsak DARUMAS
doaj   +1 more source

The Ribosomal Operon Database: A Full‐Length rDNA Operon Database Derived From Genome Assemblies

open access: yesMolecular Ecology Resources, Volume 25, Issue 1, January 2025.
ABSTRACT Current rDNA reference sequence databases are tailored towards shorter DNA markers, such as parts of the 16/18S marker or the internally transcribed spacer (ITS) region. However, due to advances in long‐read DNA sequencing technologies, longer stretches of the rDNA operon are increasingly used in environmental sequencing studies to increase ...
Anders K. Krabberød   +4 more
wiley   +1 more source

Expansion microscopy in Placozoa: improving resolution and preservation of fragile samples during marine expedition

open access: yesFrontiers in Marine Science
Placozoa are small disc-shaped animals representing one of the early branching metazoan lineages with only a dozen cell types, fast effector reactions, and complex behaviors.
Daria Y. Romanova   +3 more
doaj   +1 more source

Species Distribution Models for Mesopelagic Mesozooplankton Community

open access: yesJournal of Biogeography, Volume 52, Issue 1, Page 13-26, January 2025.
ABSTRACT Aim We aimed to enhance our understanding of the distribution of mesopelagic mesozooplankton (MM) using species distribution models, assess the performance of various modelling techniques, identify key environmental predictors for MM distribution and compute their habitat suitability indices.
Yulia Egorova   +3 more
wiley   +1 more source

State of Mnemiopsis leidyi (Ctenophora: Lobata) and mesozooplankton in Iranian waters of the Caspian Sea during 2008 in comparison with previous surveys [PDF]

open access: yes, 2012
Mnemiopsis leidyi which was accidentally introduced into the Caspian Sea in 1999 and since then has colonized extensively. The horizontal distribution of M.
Babaei, H.   +4 more
core  

Deepwater Sharks at Their Northern Limits—Distribution, Diet and Trophic Relations

open access: yesMarine Ecology, Volume 46, Issue 1, January 2025.
ABSTRACT Deepwater areas and continental slope regions south and west off Iceland are characterized by a relatively high species diversity and abundance of sharks that likely play a critical ecological role within this ecosystem. The study investigates trophic ecology of the sharks employing stomach content analysis and stable isotope analysis of ...
Jón Sólmundsson   +2 more
wiley   +1 more source

Salmon lice biology, environmental factors, and smolt behaviour with implications for the Norwegian salmon farming management system: A critical review

open access: yesReviews in Aquaculture, Volume 17, Issue 1, January 2025.
Abstract In 2017, a new regulatory management system, the traffic light system (TLS), was implemented to estimate the effects of salmon lice from Norwegian salmon aquaculture on marine survival of wild Atlantic salmon and forms the basis of aquaculture capacity regulation.
Solveig van Nes   +2 more
wiley   +1 more source

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