Results 41 to 50 of about 447,945 (246)

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

The Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison, James Gregory, Christopher Jackson, Jordan Bestwick, Katlin Schroeder, Samuel J.L. Gascoigne, Paul Bills, Laura B. Porro, Philip D. Mannion, Paul M. Barrett   +9 more
wiley   +1 more source

Evidence for Conductivity- and Macroinvertebrate-Driven Segregation of Ostracod Assemblages in Endorheic Depression Wetlands in North West Province of South Africa

Diversity, 2023
Our knowledge of the ecology of non-marine Ostracoda inhabiting endorheic wetlands (pans) of the semi-arid regions of South Africa is very scarce. The present study investigates the distribution of ostracod species in grass, open, and salt pans in the ...
Agata Szwarc, Koen Martens, Włodzimierz Meissner, Tadeusz Namiotko   +3 more
doaj   +1 more source

The biological effects of antidepressants on the molluscs and crustaceans:a review [PDF]

, 2014
Antidepressants are among the most commonly detected human pharmaceuticals in the aquatic environment. Since their mode of action is by modulating the neurotransmitters serotonin, dopamine, and norepinephrine, aquatic invertebrates who possess ...
Fong, Peter P., Ford, Alex T.
core   +1 more source

Different shape but the same topographical complexity—The lingual gross anatomy of the Saimaa (Pusa saimensis) and Baltic ringed seals (Pusa hispida botnica)

The Anatomical Record, EarlyView.
Abstract Despite the distinctly different shapes of their tongues, the tongue gross anatomy of Saimaa ringed seal closely resembled that of Baltic ringed seal. There were no differences in the extrinsic and intrinsic tongue muscles or their associated vascularization and innervation between Saimaa and Baltic ringed seals.
Juha Laakkonen, Heini Nihtilä
wiley   +1 more source

Duckling body mass increases with abundant aquatic invertebrates: Experimental approach

Global Ecology and Conservation
In Fennoscandia, waterbirds have declined over several decade, and this decline could be linked to problems in the breeding success and loss of foraging habitat provided by wetlands.
Basile Marteau, Janne Sundell, Roosa Pesonen, Petri Nummi   +3 more
doaj   +1 more source

Aquatic and Terrestrial Invertebrate Welfare

Animals, 2023
Invertebrates are a diverse group of animals that make up the majority of the animal kingdom and encompass a wide array of species with varying adaptations and characteristics.
Gregory A. Lewbart, Trevor T. Zachariah
doaj   +1 more source

Effects of the pyrethroid insecticide gamma-cyhalothrin on aquatic invertebrates in laboratory and outdoor microcosm tests [PDF]

, 2009
The sensitivity of a range of freshwater lentic invertebrates to gamma-cyhalothrin (GCH), a single enantiomer of the synthetic pyrethroid lambda-cyhalothrin, was assessed in single species laboratory tests and an outdoor multi-species ecosystem test. The
Wijngaarden, R.P.A., van, Brock, T.C.M., Barber, I.   +2 more
core   +1 more source

Male reproductive system in stenopodidean shrimps: Unveiling basal reproductive traits in shrimp‐like Pleocyemata (Stenopodidae and Spongicolidae)

The Anatomical Record, EarlyView.
Abstract Stenopodidea represents one of the basal lineages within Pleocyemata, yet the male reproductive system (MRS) of this group remains poorly understood, with limited information available regarding its morphology and function. This study provides the first detailed description of the MRS in four stenopodidean shrimp species from two families ...
Caio Santos Nogueira, Lucas Rezende Penido Paschoal, Fernando José Zara   +2 more
wiley   +1 more source

From stress to response: a systematic review of epigenetic pathways underlying gene expression and phenotypic plasticity in aquatic invertebrates

Frontiers in Marine Science
Marine and freshwater ecosystems are undergoing rapid transformations propelled by human activity, placing unprecedented pressure on aquatic species and threatening critical ecosystem services. Aquatic invertebrates, which underpin aquaculture industries,
Emma C. Johnson, Juliet M. Wong
doaj   +1 more source

Influence of Hydrological Situations on Benthic Organisms in a Small River in Saxony (Germany)

Journal of Hydrology and Hydromechanics, 2013
This research was focused on the relationship between river discharge and organism drift. It was carried out for three years in a small heavily modified river in Saxony (Germany). The amount and species composition of drifting invertebrates were observed,
Kändler Matthias, Seidler Christina
doaj   +1 more source