Results 21 to 30 of about 896,121 (306)
Semina: Ciências Agrárias, 2008 The present experimentwas undertaken out to evaluate the performance and the survival of Nile tilapia (Oreochromis niloticus) in the sexual reversion phase.
Adilson Reidel +5 more
doaj +1 more source
Rapid evolution of sex pheromone-producing enzyme expression in Drosophila. [PDF]
PLoS Biology, 2009 A wide range of organisms use sex pheromones to communicate with each other and to identify appropriate mating partners. While the evolution of chemical communication has been suggested to cause sexual isolation and speciation, the mechanisms that govern
Troy R Shirangi +3 more
doaj +1 more source
Proporción Sexual y parámetros de producción de Oreochromis niloticus “Tilapia”
Manglar, 2023 El cultivo de Oreochromis niloticus se ve afectado por la reproducción excesiva en los sistemas de cultivo, lo que provoca un retraso en el crecimiento y tamaños pequeños en el momento de la cosecha, volviéndose no comercializables, creando la necesidad ...
Katicsa Natalie De La Cruz Barrueto +3 more
doaj +1 more source
Neotropical Ichthyology, 2021 Morphoanatomical or physiological changes coupled with changes in body size are known as allometric relationships. The objective of this study was to identify the points of growth changes in Centropomus based on otolith morphometry and morphogeometry ...
Reginaldo Medeiros +4 more
doaj +1 more source
On sexual behavior and sex-role reversal
Journal of Psychosomatic Obstetrics & Gynecology, 2005 Sex is not about reproduction; sex is about (re-)combination of DNA. Sex, not reproduction, always involves physical contact between two individuals; to achieve this, strategies of sexual behavior evolved. Sexual behavior, therefore, did not evolve as part of a reproductive strategy, but evolved to enable exchange of genetic material.
openaire +2 more sources
Revista Brasileira de Zootecnia, 2008 Foram utilizadas 800 larvas com 2 dias de idade com o objetivo de testar o uso de farelo de soja em rações para tilápias-do-nilo durante o período de reversão sexual (30 dias).
Fábio Meurer +5 more
doaj +1 more source
Revista Brasileira de Zootecnia, 2005 Este trabalho foi realizado com o objetivo de se avaliar o efeito de diferentes níveis de energia digestível na ração sobre o desempenho de larvas de tilápia-do-nilo (Oreochromis niloticus), durante a fase de reversão sexual.
Wilson Rogério Boscolo +5 more
doaj +1 more source
New Avenues to Design Toxoplasma Vaccines Based on Oocysts and Cysts
Frontiers in Immunology, 2022 Toxoplasmosis is a worldwide disease affecting all warm-blooded animals, including humans. Vaccination strategies aimed at inducing an efficient immune response while preventing transmission have been attempted in the past.
David Arranz-Solís, Jeroen P. J. Saeij
doaj +1 more source
PHENOMENON OF FLORAL REVERSION IN BOLTING GARLIC (Allium sativum L.)
Acta Scientiarum Polonorum: Hortorum Cultus, 2018 In this study, we present investigations of morphological changes in the inflorescence of bolting Allium sativum L., which forms umbel-like inflorescences with small, inconspicuous flowers, bulbils, and leaf-like membranous bracts.
Krystyna Winiarczyk +2 more
doaj +1 more source
From mice to humans—divergent strategies for intestinal homeostasis and regeneration
FEBS Letters, EarlyView.Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
wiley +1 more source