Results 41 to 50 of about 115,613 (166)

Indicadores de condición larvaria aplicados al camarón de río del norte Cryphiops caementarius (Molina, 1782), en condiciones de cultivo controlado Larval condition indicators applied to the northern river shrimp Cryphiops caementarius (Molina, 1782), under condition of controlled cultivation

open access: yesLatin American Journal of Aquatic Research, 2012
Se estudia el desarrollo larvario del camarón de río del norte de Chile, Cryphiops caementarius, desde el estado de zoea 1 hasta el primer juvenil, caracterizando y analizando criterios que verificaron la aplicación de indicadores de tipo morfológico y ...
María C Morales, Jaime Meruane
doaj  

The effects of six species of aphids on some life history parameters of the ladybird Propylea quatuordecimpunctata (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2005
One of the factors affecting the effectiveness of predatory coccinellids in an aphid infested crop is the food specificity of the predator. The response towards six species of aphids (Sternorrhyncha: Aphididae) was therefore tested in one of the most ...
Plamen KALUSHKOV, Ivo HODEK
doaj   +1 more source

Study on the developmental function of CT14 using the model organism Caenorhabditis elegans

open access: yesShanghai Jiaotong Daxue xuebao. Yixue ban
Objective·To investigate the effects of the cancer-testis antigen 14 (CT14) on embryonic and larval development in nematodes by using the model organism Caenorhabditis elegans (C.
YANG Shuwen   +4 more
doaj   +1 more source

Histology and histochemistry of Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae) fat body during the post embrionary development

open access: yesRevista Chilena de Entomología, 2019
Phyllocnistis citrella (Stainton), is one of the most worrying pests in the citrus growing sector. Insects’ fat body is an important tissue where numerous metabolic processes take place; its significance can be clearly seen in its main functions, i.e ...
Gloria Valeria Vaca   +2 more
doaj   +1 more source

Impact of higher temperatures on yolk sac absorption and early development in hybrid catfish between Clarias gariepinus and C. macrocephalus

open access: yesJournal of the World Aquaculture Society
Climate change has driven global temperature increases, resulting in severe heat waves, altered precipitation patterns, and extreme weather events. In April 2024, a massive die‐off of hybrid catfish larvae and fry occurred in Thai aquaculture farms ...
Juniman Rey   +16 more
doaj   +1 more source

Growth and survival of silver catfish larvae, Rhamdia quelen (Heptapteridae), at different calcium and magnesium concentrations

open access: yesNeotropical Ichthyology
Since the relative ratios of Ca2+ and Mg2+ can vary greatly from one water body to another, and lime used for the increase of water hardness or pH can have different ratios of Ca2+ and Mg2+ in its composition, the objective of this study was to analyze ...
Lenise Vargas Flores da Silva   +2 more
doaj   +1 more source

Morphology of the first larval stage of Macrobrachium brasiliense (Heller, 1868) (Caridea: Palaemonidae)

open access: yesNauplius
In this paper, we describe and illustrate the morphology of the first larval stage of the prawn Macrobrachium brasiliense. Two ovigerous females were obtained in a stream environment, which belongs to Paraná River Basin, Southeastern of Brazil, and were ...
João Alberto Farinelli Pantaleão   +3 more
doaj  

Larval Development and Metamorphosis in Sipuncula [PDF]

open access: yesAmerican Zoologist, 1976
In a brief review of development of the phylum Sipuncula, four patterns of development are recognized: (1) direct with no pelagic stage; (2) one larval stage, a lecithotrophic trochophore; (3) two larval stages, a lecithotrophic trochophore and a lecithotrophic pelagosphera; (4) two larval stages, a lecithotrophic trochophore and a planktotrophic ...
openaire   +2 more sources

LARVAL DEVELOPMENT IN THE ASTEROID ECHINASTER ECHINOPHORUS

open access: yesThe Biological Bulletin, 1973
1. Echinaster echinophorus off the west coast of Florida was observed to spawn, from early April to late July, two different egg types: one type is pelagic, brown to black in color and 1.0-1.3 mm in diameter, while the second is bright orange, ranges from 0.84 to 0.88 mm in diameter and settles immediately to the substratum after spawning. 2.
openaire   +4 more sources

Home - About - Disclaimer - Privacy