Results 61 to 70 of about 343,438 (255)

Identificación molecular y relaciones evolutivas de Pomacea nobilis, base para la autenticación específica del churo negro de la Amazonia peruana

open access: yesRevista Peruana de Biología, 2020
En la Amazonia Peruana los caracoles dulceacuícolas de la familia Ampullariidae son conocidos como churos y originalmente han sido descritas para Perú alrededor de 20 especies.
Rina Ramírez   +8 more
doaj   +1 more source

The first genetic characterization of Setaria marshalli (Nematoda, Spirurida) with reliable DNA barcoding based on a mitochondrial genetic marker

open access: yesParasite, 2022
Setaria marshalli is a mosquito-borne filarial nematode that causes infection in calves younger than two years old. In the present study, nematodes were obtained from a calf in Japan and morphologically identified as S. marshalli.
Kitajima Chihiro   +2 more
doaj   +1 more source

Species delimitation and molecular dating of southern African Tetramesa (Hymenoptera: Eurytomidae): An understudied microhymenopteran group

open access: yesAustral Entomology, Volume 64, Issue 2, May 2025.
Abstract The genus Tetramesa Walker (Hymenoptera: Eurytomidae) comprises over 200 species of herbivorous wasps that feed exclusively on grasses. Recent field surveys in South Africa for grass biological control programs have uncovered a large diversity of potential Tetramesa on African grasses.
Clarke J. M. van Steenderen   +4 more
wiley   +1 more source

Effects of Simulated Student Interaction on Student Perceptions of Teaching Presence [PDF]

open access: yes, 2017
The purpose of this study was to explore the impact of the instructor posting in online discussions as a simulated student; particularly the impact simulated student interaction (SSI) had on the instructor/student relationship.
Allen, Julia, , M.S.   +2 more
core   +1 more source

Morphomolecular identification of Polylabris lingaoensis Tingbao, Kritsky, and Jun, 2007 infecting the twobar Seabream (Acanthopagrus bifasciatus)

open access: yesHelminthologia
A total of 40 fish samples of the twobar seabream, Acanthopagrus bifasciatus (Sparidae), were collected from January to June 2023 in the Arabian Gulf (Saudi Arabia). Fish samples were surveyed for ectoparasitic taxa.
Alojayri G.   +4 more
doaj   +1 more source

El género Herpisticus Germar, 1823 de las islas Canarias (Coleoptera: Curculionidae: Entiminae: Tanymecini)

open access: yesGraellsia, 2020
Se revisa la taxonomía del género Herpisticus Germar, 1823, endémico de las islas Canarias, con el apoyo de datos moleculares (mtCO1). El estudio morfológico incluye la descripción de la larva y pupa del género.
Antonio Machado, Daniel Suárez
doaj   +1 more source

An Assessment of the Fish Maw Trade in Singapore and Malaysia Reveals Threatened Species and Highlights the Need for a More Complete Assessment of the Conservation Status of the World's Fishes

open access: yesConservation Letters, Volume 18, Issue 3, May/June 2025.
ABSTRACT Fish maw, the dried swim bladder of teleost fish, is consumed throughout much of East and Southeast Asia. The serving of maw is seen as an indicator of wealth, prestige, and status in Chinese culture. While Hong Kong and mainland China are considered major fish maw importers, its trade in these countries remains largely understudied. This lack
Ying Giat Seah, Benjamin J. Wainwright
wiley   +1 more source

Thermal relaxation in charge ordered Pr$_{0.63}$ Ca$_{0.37}$ MnO$_3$ in presence of a magnetic field

open access: yes, 2001
We report observation of substantial thermal relaxation in single crystal of charge ordered system Pr$_{0.63}$Ca$_{0.37}$MnO$_3$ in an applied magnetic field of H = 8T.
A.K. Raychaudhuri   +14 more
core   +1 more source

DNA barcoding reveals the coral “laboratory-rat”, Stylophora pistillata encompasses multiple identities [PDF]

open access: yes, 2013
Stylophora pistillata is a widely used coral “lab-rat” species with highly variable morphology and a broad biogeographic range (Red Sea to western central Pacific).
A Budd   +34 more
core   +2 more sources

Description of Rotylenchus rhomboides n. sp. and a Belgian population of Rotylenchus buxophilus (Tylenchomorpha: Hoplolaimidae)

open access: yesJournal of Nematology, 2019
During a survey in the Botanical garden of Ghent University, a new species Rotylenchus rhomboides n. sp. and a population of Rotylenchus buxophilus were found. Rotylenchus rhomboides n. sp.
Nguyen Huu Tien   +5 more
doaj   +1 more source

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