Results 21 to 30 of about 1,025 (146)

On the junior subjective synonyms of Coullia Hamond, 1973 (Copepoda, Harpacticoida, Laophontidae): an and key to species and related genera

open access: yesZooKeys, 2009
Morphological comparison of the genera Coullia Hamond, 1973 and Phycolaophonte Pallares, 1975 (Copepoda, Harpacticoida, Laophontidae) shows that the latter should be relegated to a junior synonym of the former.
Rony Huys
doaj   +1 more source

The first complete 3D reconstruction of a Spanish fly primary larva (Lytta vesicatoria, Meloidae, Coleoptera). [PDF]

open access: yesPLoS ONE, 2012
The first detailed anatomical study of a primary larva of Meloidae is presented. Thereby techniques such as three-dimensional reconstructions, microtome sections, SEM (scanning electronic microscopy) and CLSM (confocal laser scanning microscopy) are ...
Si-Qin Ge   +6 more
doaj   +1 more source

'Cand. Actinochlamydia clariae' gen. nov., sp. nov., a unique intracellular bacterium causing epitheliocystis in catfish (Clarias gariepinus) in Uganda. [PDF]

open access: yesPLoS ONE, 2013
BACKGROUND AND OBJECTIVES: Epitheliocystis, caused by bacteria infecting gill epithelial cells in fish, is common among a large range of fish species in both fresh- and seawater. The aquaculture industry considers epitheliocystis an important problem. It
Andreas Steigen   +10 more
doaj   +1 more source

Evolution of pollen grain morphology in Amorimia and allies evidences the importance of palynological apomorphies and homoplasies in Malpighiaceae systematics

open access: yesPlant Ecology and Evolution, 2023
Background and aims – Pollen grain morphology is an important morphological character for aiding the systematics of flowering plants. For Malpighiaceae, only a single unpublished palynological study has comprehensively sampled ca 60 of this family’s 75 currently accepted genera.
Carolina Prandi da Silva   +3 more
openaire   +4 more sources

A Nature’s Curiosity: The Argonaut “Shell” and Its Organic Content

open access: yesCrystals, 2020
Molluscs are known for their ability to produce a calcified shell resulting from a genetically controlled and matrix-mediated process, performed extracellularly.
Morgane Oudot   +6 more
doaj   +1 more source

Mammalian enamel maturation: Crystallographic changes prior to tooth eruption. [PDF]

open access: yesPLoS ONE, 2017
Using the distal molar of a minipig as a model, we studied changes in the microstructural characteristics of apatite crystallites during enamel maturation (16-23 months of postnatal age), and their effects upon the mechanical properties of the enamel ...
Anna Kallistová   +4 more
doaj   +1 more source

Lithobius (Chinobius) yuchernovi, a new lithobiid species from northeastern Siberia and the Kamchatka Peninsula, Russia (Chilopoda, Lithobiomorpha)

open access: yesZooKeys, 2017
Lithobius yuchernovi sp. n. is described, based on type material from the Ola Plateau, Magadan Region, Russia. The new species is widely distributed in northeastern Siberia, ranging from the Magadan Region, until the eastern Chukot Autonomous Region and ...
Gyulli Sh. Farzalieva   +2 more
doaj   +3 more sources

Osteology and relationships of Libanopycnodus wenzi gen. et sp. nov. and Sigmapycnodus giganteus gen. et sp. nov. (Pycnodontiformes) from the Late Cretaceous of Lebanon

open access: yesEuropean Journal of Taxonomy, 2018
The skeleton and the relationships of Libanopycnodus wenzi gen. et sp. nov. and of Sigmapycnodus giganteus gen. et sp. nov., two pycnodontiform fishes from the marine Cenomanian (Late Cretaceous) of Lebanon, are studied in detail.
Louis Taverne, Luigi Capasso
doaj   +1 more source

Reassessment of the enigmatic crocodyliform "Goniopholis" paulistanus Roxo, 1936: Historical approach, systematic, and description by new materials. [PDF]

open access: yesPLoS ONE, 2018
The Crocodyliformes are the most represented vertebrate clade in the Upper Cretaceous sequences of the Bauru Group, Paraná Basin. However, some of the species described have an uncertain taxonomic status and phylogenetic position.
André E Piacentini Pinheiro   +7 more
doaj   +1 more source

Comparative study of the ovarian morphology in the order Polydesmida (Diplopoda) and description of unusual structures in the female reproductive system

open access: yesBrazilian Journal of Biology
Polydesmida is the largest order in the class Diplopoda in terms of the number of species, genera and families, but there are few studies of the ovarian morphology of species in this order.
TG Pinheiro, MI Marques, CS Fontanetti
doaj   +1 more source

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