Results 21 to 30 of about 20,823 (188)

Traits of eggshells and shell membranes of translucent eggs

open access: yesPoultry Science, 2017
Translucent eggshells negatively affect the appearance of eggs and decrease their economic value. Translocation and accumulation of water from the contents to the shells of eggs are frequent occurrences. Causes of translucent eggshell formation have been investigated, but the primary reason is uncertain.
De-He, Wang   +7 more
openaire   +3 more sources

Características histológicas del útero de Sympterygia acuta (Garman, 1877) y Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes; Rajidae) [PDF]

open access: yes, 2013
Los condrictios constituyen un clado sumamente conservado y vulnerable a la explotación, que ha cobrado una importancia creciente en los últimos años. Sin embargo, existe poca información sobre los aspectos morfológicos relacionados con la reproducción ...
Díaz Andrade, María Constanza   +2 more
core   +1 more source

Embryogenesis of the stinging catfish, Heteropneustes fossilis (Actinopterygii: Siluriformes: Heteropneustidae) [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2010
Background. The stinging catfish, Heteropneustes fossilis (Bloch, 1794), has recently raised interest among fish farmers, ornamental fish keepers, and pathologists. Its natural populations are threatened due to habitat loss and high fishing pressure.
A. Korzelecka-Orkisz   +6 more
doaj   +3 more sources

Study of measurement methods on phenotype of translucent eggs

open access: yesPoultry Science, 2019
Scoring is a common method to evaluate eggshell translucency, and it mainly depends on the area and the density of translucent spots in eggshells. However, the lack of common scoring criteria and the difficulty of quantitatively measuring spots in eggshells impede effective comparisons between research papers and greatly hinder the progress of research
De-He Wang   +7 more
openaire   +2 more sources

Research Note: Three-dimensional microstructural basis for chicken eggshell translucency

open access: yesPoultry Science, 2023
: Eggshell translucency, an externally observable feature, can influence consumer purchase intentions. The eggshell quality often deteriorates in aging laying hens, leading to increased eggshell translucency.
Lin Xuan   +3 more
doaj   +1 more source

The only surviving Medieval codex of Galician-Portuguese secular poetry: tracing history through luxury pink colors

open access: yesHeritage Science, 2023
The Ajuda Songbook is an exceptional illuminated manuscript being the only surviving codex of Galician-Portuguese secular poetry; it was produced in the end of the thirteenth century, beginning of the fourteenth century.
Márcia Vieira   +4 more
doaj   +1 more source

Submicroscopic structure of the egg shell of helminth II. A study on Trichuris vulpis [PDF]

open access: yes, 1960
Electron microscopic structures of the egg shell and the plug of the ova of Trichuris vulpis have been demonstrated. The shell is of one thick membrane of about 4 microns in thickness and consisted of several opaque and less opaque layers arranged in ...
Inatomi, Seiiti
core   +1 more source

Life History and Laboratory Rearing of \u3ci\u3eCorythucha Juglandis\u3c/i\u3e (Hemiptera: Tingidae) With Descriptions of Immature Stages [PDF]

open access: yes, 2017
The life history of Corythucha juglandis was investigated in Jackson and Alexander counties. Illinois. August 1981-December 1985 and the immature stages were described.
McPherson, J. E, Vogt, T. E
core   +2 more sources

A new species of Carcinonemertes, Carcinonemertes conanobrieni sp. nov. (Nemertea: Carcinonemertidae), an egg predator of the Caribbean spiny lobster, Panulirus argus. [PDF]

open access: yesPLoS ONE, 2017
A new species of nemertean worm belonging to the genus Carcinonemertes is described from egg masses of the Caribbean spiny lobster Panulirus argus from the Florida Keys, Florida, USA.
Lunden Alice Simpson   +2 more
doaj   +1 more source

Morphology of immatures of Euschistus (Mitripus) grandis (Insecta: Hemiptera: Pentatomidae)

open access: yesZoologia (Curitiba), 2013
Immatures are important sources of information about characters, thus potentially improving classification and phylogenies. Euschistus (Mitripus) grandis Rolston, 1978 occurs in southern and southeastern Brazil.
Larissa Donida Biasotto   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy