Results 31 to 40 of about 896,409 (189)

Isotopic profile and mercury concentration in fish of the lower portion of the rio Paraíba do Sul watershed, southeastern Brazil

Neotropical Ichthyology
The aim of this study was to evaluate the isotopic profile and mercury (Hg) concentrations in fish (carnivores, omnivores and detritivores) in the lower portion of the rio Paraíba do Sul watershed, southeastern Brazil.
Adélia R. M. Rocha, Ana Paula M. Di Beneditto, Inácio A. Pestana, Cristina Maria M. de Souza   +3 more
doaj   +1 more source

Three‐dimensional digital analysis of musteloid masticatory muscle architecture

The Anatomical Record, EarlyView.
Musteloids span an enormous breadth of dietary modes within a single superfamily. In this study, we utilize digital dissection techniques to reconstruct the internal 3D anatomy of muscles within the musteloid feeding apparatus, and explore how dietary specializations might alter the size, orientation, and curvature of fascicles therein.
Cassidy E. Davis, Edwin Dickinson, Madison Manzo, Ashley R. Deutsch, Jillian S. Davis, Michael C. Granatosky, Adam Hartstone‐Rose   +6 more
wiley   +1 more source

Determination and evaluation of mercury concentration in fish in the São Francisco River Watershed, Brazil

Revista Ambiente & Água, 2021
The objective of this work was to evaluate the bioaccumulation of mercury in 13 species of fish with different eating habits, captured in the Três Marias Reservoir, São Francisco Basin, from March 2012 to April 2013.
Marcos Vinícius Teles Gomes, Carlos Alexandre Borges Garcia, Yoshimi Sato, Érica Araújo Mendes, Mário Olindo Tallarico de Miranda, Silvânio Silvério Lopes da Costa   +5 more
doaj   +1 more source

Postnatal craniomandibular growth in Harbor seals (Phoca vitulina vitulina)

The Anatomical Record, EarlyView.
Postnatal ontogeny in Harbor seals (Phoca vitulina vitulina). Cranium and mandible grow rapidly until 5 years of age, followed by a deceleration and finally a stagnation. Abstract As secondarily aquatic carnivores, seals display several phenotypic differences compared to their terrestrial relatives.
Elisabeth Steinbach, Julia Schaar, Christine Böhmer   +2 more
wiley   +1 more source

Assessment of total mercury content in fish muscle tissue from the middle basin of the Pastaza River, Ecuador.

PLoS ONE
One of the most toxic metals is mercury, which exhibits high toxicity during short exposure periods. This study aimed to determine the concentration of total mercury (THg) in fish muscle tissue from various species captured from two locations in the ...
Fernanda Paz-Suconota, Lenys Fernández, Natalia Carpintero-Salvador, Melany Ruiz-Urigüen, Stefan Alexander Brück, Fidel Ernesto Rodríguez Galarza, Ricardo Burgos-Morán, Patricio J Espinoza-Montero   +7 more
doaj   +1 more source

Computational Fluid Dynamics Reveal Hydromechanical Adaptations of <i>Ceriodaphnia dubia</i> as an Inducible Defence Against the Carnivorous Plant <i>Utricularia</i> × <i>neglecta</i>. [PDF]

Ecol Evol
This study investigates an inducible defence of Ceriodaphnia dubia against the carnivorous plant Utricularia × neglecta using computational fluid dynamics. Simulations comparing the typical and plant‐exposed morph show that the induced morphology reduces drag and, together with proportionally smaller second antennae, likely lowers the probability of ...
Schulenberg EM, Piske P, Tomcic M, Weiss LC, Horstmann M.   +4 more
europepmc   +2 more sources

Exceptional preservation informs the paleobiology of tapinocephalid dinocephalians

The Anatomical Record, EarlyView.
Abstract The tapinocephalid dinocephalian Moschops is one of the most iconic taxa of the middle Permian, yet its paleobiology remains one of the least well‐known. Here, we address some aspects of paleoneurology and paleobiology of Moschops using CT scanning of four well preserved skulls from the upper Abrahamskraal Formation of South Africa. Two of the
Julien Benoit, Lars Schmitz, Kenneth D. Angielczyk, Luke A. Norton, Andrew D. Bolton, Adam Midzuk, Roger M. H. Smith   +6 more
wiley   +1 more source

The impact of feeding pattern on heavy metal accumulation and associated health risks in fishes from the Dhaleshwari River Bangladesh

Heliyon
Heavy metals in aquatic ecosystems accumulate in fish tissues, posing significant ecological and health hazards due to their toxic effects on both the environment and human consumers.
Evena Parvin Lipy, Liton Chandra Mohanta, Dipa Islam, Chadni Lyzu, Samina Akhter, Mahmuda Hakim   +5 more
doaj   +1 more source

Comparative histological, histochemical, and histometric evaluation of the esophagus in two avian species with different feeding habits (Ciconia ciconia and Buteo buteo)

The Anatomical Record, EarlyView.
Histological structure of esophagus. Abstract The aim of this study was to conduct a comparative evaluation of the histological and histochemical organization of the esophagus in two avian species with different feeding ecologies. A total of 6 individuals were used for this purpose (3 storks, 3 common buzzards).
Serap İlhan Aksu, Dilem Gülece Ermutlu, Burak Büyükbaki, Turgay Deprem, Serap Koral Taşçi, Şahin Aslan, Rumeysa Nur Aslan, Hatice Gizem Büyükbaki, Mete Cihan   +8 more
wiley   +1 more source

Crustaceans as Key Prey: Insights Into the Dietary Partitioning of Four Carnivorous Fishes in the Nansha Islands, South China Sea

Ecology and Evolution
Small carnivorous fishes serve as important mesopredators in coral reef ecosystems. However, the habitat and prey availability degradation within these ecosystems has intensified the trend of body size miniaturization and interspecific competition among ...
Chen Zhang, Simin Hu, Xianzhi Lin, Hui Huang, Sheng Liu   +4 more
doaj   +1 more source