Results 31 to 40 of about 781 (169)

First records of Hubrechtella ijimai (Nemertea, Hubrechtiiformes) from Korea and China [PDF]

open access: yesCheck List, 2017
Hubrechtella ijimai is reported for the first time from South Korea (East China Sea) and China (Yellow Sea), about 260 and 930 km from the nearest locality in Japan.
Alexei V Chernyshev   +3 more
doaj   +3 more sources

Tetrodotoxins in Ribbon Worms Cephalothrix cf. simula and Kulikovia alborostrata from Peter the Great Bay, Sea of Japan

open access: yesToxins, 2022
Tetrodotoxin, an extremely potent low-molecular-weight neurotoxin, and its analogues (TTXs) are widely distributed in aquatic and terrestrial ecosystems. Most investigations concerning TTXs have been conducted mainly on puffer fish, octopus, and mollusks,
Anna E. Vlasenko, Timur Yu. Magarlamov
doaj   +1 more source

Tetrodotoxin and Its Analogues (TTXs) in the Food-Capture and Defense Organs of the Palaeonemertean Cephalothrix cf. simula

open access: yesToxins
Tetrodotoxin (TTX), an extremely potent low-molecular-weight neurotoxin, is widespread among marine animals including ribbon worms (Nemertea). Previously, studies on the highly toxic palaeonemertean Cephalothrix cf.
Grigorii V. Malykin   +2 more
doaj   +1 more source

An Overview of Hox Genes in Lophotrochozoa: Evolution and Functionality

open access: yesJournal of Developmental Biology, 2016
Hox genes are regulators of animal embryonic development. Changes in the number and sequence of Hox genes as well as in their expression patterns have been related to the evolution of the body plan.
Marco Barucca   +2 more
doaj   +1 more source

Review of the fauna associated with wild and farmed mussels and oysters in the Mediterranean

open access: yesBiological Reviews, EarlyView.
ABSTRACT Mussels and oysters are important ecosystem engineers which modify the physical and chemical characteristics of the environment and create habitats that support highly diverse associated communities. In the Mediterranean Sea, the native Mediterranean mussel Mytilus galloprovincialis and the European flat oyster Ostrea edulis, together the ...
Barbara Mikac   +5 more
wiley   +1 more source

Evidence for adaptive explanations of semelparity in animals

open access: yesBiological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher   +1 more
wiley   +1 more source

Ultrastructure and phylogenetic significance of spermatozoa in Nemertea

open access: yesZoomorphology, 2023
Abstract Sperm ultrastructure is frequently employed as a source for phylogenetic inference due to the ease of accessing spermatozoa. Despite being unicellular, sperm cells exhibit a relatively high number of diverse characters and character states.
Thomas Bartolomaeus   +3 more
openaire   +1 more source

Warm‐wet transition restructures arid lake microbiomes and functional potential

open access: yesiMetaOmics, EarlyView.
This study summarizes how a long‐term warm‐dry to warm‐wet transition restructures microbiomes and functional potential in Lake Bosten, an arid lake in northwestern China. Warm‐wet hydroclimatic change increased water level and hydrological connectivity, while decreasing salinity and total nitrogen.
Zhen Shen   +8 more
wiley   +1 more source

Rediscovery of the nemertean Prostoma graecense from Xochimilco, 75 years after its first and only record

open access: yesRevista Mexicana de Biodiversidad, 2018
The identity of the freshwater nemertean Prostoma graecense (Böhming, 1892) from Lake Xochimilco is solved 75 years after its first recording. Identification of the specimens was accomplished via both morphological and molecular means, the latter ...
Omar Lagunas-Calvo   +6 more
doaj   +1 more source

Correction: Development of the Nervous System of Carinina ochracea (Palaeonemer-tea, Nemertea). [PDF]

open access: yesPLoS ONE, 2016
[This corrects the article DOI: 10.1371/journal.pone.0165649.].
PLOS ONE Staff
doaj   +1 more source

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