Results 51 to 60 of about 47,550 (221)

Stream Invertebrate Responses to Fine Sediment Depend on the Organic and Inorganic Components

Freshwater Biology, Volume 70, Issue 3, March 2025.
ABSTRACT Excess fine sediment ( < 2 mm) is a pervasive stressor of aquatic systems at a global scale. To date, most research quantifying ecological response to deposited fine sediment has been conducted without distinguishing between the organic and inorganic components of fine sediment, leaving mechanistic understanding of how fine sediment affects ...
Morwenna McKenzie, Adrian L. Collins, Noah G. Davis, Roger Hodson, J. Iwan Jones, Christoph D. Matthaei, John F. Murphy, Annika Wagenhoff, Kate L. Mathers   +8 more
wiley   +1 more source

Life cycle and morphology of a cambrian stem-lineage loriciferan.

PLoS ONE, 2013
Cycloneuralians form a rich and diverse element within Cambrian assemblages of exceptionally preserved fossils. Most resemble priapulid worms whereas other Cycloneuralia (Nematoda, Nematomorpha, Kinorhyncha, Loricifera), well known at the present day ...
John S Peel, Martin Stein, Reinhardt Møbjerg Kristensen   +2 more
doaj   +1 more source

Evolution of the Cdk4/6–Cdkn2 system in invertebrates

Genes to Cells, Volume 29, Issue 11, Page 1037-1051, November 2024.
Hypothesis on the evolution of the Cdkn2 locus. (a) Loss of Cdkn2 occurred multiple times. (b) Evolution of microsynteny at the Cdkn2 locus. Cdkn2e is a hypothetical transient gene. Abstract The cell cycle is driven by cyclin‐dependent kinases (Cdks). The decision whether the cell cycle proceeds is made during G1 phase, when Cdk4/6 functions.
Shiori Yuki, Shunsuke Sasaki, Yuta Yamamoto, Fumika Murakami, Kazumi Sakata, Isato Araki   +5 more
wiley   +1 more source

Physicochemical Characteristics and Macroinvertebrate Assemblages of Riffles Upstream and Downstream of a Streambank Impacted by Unrestricted Cattle Access [PDF]

, 2000
Riparian zones are important contributors to stream ecosystem health. Alteration of such areas can change stream structure and function, resulting in modified productivity and hydrologic patterns.
Grippo, Richard S., Johnson, Ronald L., Ward, Daniel D.   +2 more
core   +1 more source

Optimizing eDNA Replication for Standardized Application in Lotic Systems in Aotearoa, New Zealand

Environmental DNA, Volume 6, Issue 5, September–October 2024.
The objective of this study was to optimize eDNA sample replication for the consistent characterization of freshwater fish and aquatic macroinvertebrate communities in flowing New Zealand waters, and ultimately, to inform the development of robust national monitoring standards. Results indicated that six replicates were needed to consistently detect 89.
Josh Smith, Bruno David, Andy Hicks, Shaun Wilkinson, Nicolas Ling, Daniel Fake, Alastair Suren, Amy Gault   +7 more
wiley   +1 more source

Redescription and new records of freshwater Nematomorpha (Gordiida) from Chile, with the description of two new species Redescripción y nuevos registros de Nematomorpha (Gordiida) de Chile con la descripción de dos nuevas especies

Revista Chilena de Historia Natural, 2005
Only four species of Gordiida (Nematomorpha) are known from Chile. This paper describes two new species Gordionus enigmaticus and Gordius austrinus.
CRISTINA DE VILLALOBOS, FERNANDA ZANCA, HÉCTOR IBARRA-VIDAL   +2 more
doaj  

Aquatic Macroinvertebrates Collected from Thirty-two Missouri Ozark Streams [PDF]

, 2008
A previously reported study of the distribution and status of an endemic dragonfly in Missouri emphasized data collected by aerial netting and examination of specimens housed in the Wilbur Enns Museum of Entomology.
Harp, George L., Harp, Phoebe A., McCord, Samuel B.   +2 more
core   +1 more source

Paleoethology : fossilized behaviours in amber [PDF]

, 2007
When organisms became trapped in sticky resin they usually expired so quickly that they could fossilize in almost lifelike circumstances. Based on frequent description in literature of many examples we propose in this paper a classification of these ...
Arillo, A.
core   +2 more sources

Symbiotic species diversity can explain invasion success and host–parasite system stability: The case of gammarid hosts

Ecosphere, Volume 15, Issue 7, July 2024.
Abstract A major current challenge related to invasions is the absence of a comprehensive theoretical basis for preventing the introduction of alien species and controlling their populations. By using a macroecological framework, we aim to examine patterns of symbiotic species diversity across native and invasive hosts to understand the mechanisms ...
Volodimir Sarabeev, Juan Antonio Balbuena, Mikuláš Oros, Valerii Domnich, Rosa Ana Sueiro, Jose Manuel Leiro, Mykola Ovcharenko   +6 more
wiley   +1 more source

The collection of Nematomorpha in the Zoological Museum Hamburg, including description of a new species, Chordodes jelkae sp. n.

Zoosystematics and Evolution, 2016
The collection of horsehair worms in the Zoological Museum of the Centrum für Naturkunde (CeNak) of the University of Hamburg has been revised. All specimens have been investigated by Scanning Electron Microscopy (SEM).
Andreas Schmidt-Rhaesa
doaj   +3 more sources