Results 41 to 50 of about 217,206 (337)
Ciência Rural, 2021 : The domestic canary (Serinus canaria) has been bred for hundreds of years to improve the quality of its plumage and its song. Reproduction in this species occurs seasonally, stimulated by a gradual increase in day length.
Eduardo Koji Tamura +4 more
doaj +1 more source
Factors determining spawning success in Penaeus monodon Fabricius [PDF]
, 2001 Spawning success in relation to the size of spawner, clumping of eggs, percentage of spawning and frequency of spawning was studied in Penaeus monodon collected off Tamil Nadu, India. The results indicated positive correlation between the size of spawner
Babu, M. +3 more
core
The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada
Population Ecology, EarlyView.We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley +1 more source
Revista Brasileira de ZootecniaAn experiment was performed to evaluate the effect of the incubation system ― multiple-stage (MS) and single-stage (SS) ― on the characteristics at hatching, intestinal morphology, metabolism, and performance of Cobb-500 chickens from 1 to 40 d of age. A
Araceli Pacheco Villanueva +3 more
doaj +1 more source
Perbandingan Fertilitas Serta Susut, Daya dan Bobot Tetas Ayam Kampung pada Penetasan Kombinasi [PDF]
, 2013 Hatching chicken eggs can be grouped into three ways namely hatching naturally with the help of wild duck, artificial hatching machine, and a combination of natural and artificial means.
Kurtini, T. (Tintin) +2 more
core +2 more sources
Social context prevents heat hormetic effects against mutagens during fish development
FEBS Letters, EarlyView.This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere +5 more
wiley +1 more source
The effect of different cold period during maternal incubation on incubation efficiency and hatching term in Austropotamobius pallipes [PDF]
Knowledge and Management of Aquatic Ecosystems, 2009 This study tested the effect on the incubation efficiency (E in %) and hatching term during maternal incubation of Austropotamobius pallipes of five different cold periods (duration: 45, 60, 75, 90 and 105 days) under controlled conditions and one group ...
T. Policar +4 more
doaj
Brazilian Journal of Biology, 2023 Cattle egret Bubulcus ibis, feeds on insect pests in many agro-ecosystems. Thus, there is an urgent need to study the breeding chronology of cattle egret, in order to develop suitable protection programs for this beneficial bird to perform its role as ...
M. A. A. Issa +6 more
doaj +1 more source
Exploring protandry and pupal size selection for Aedes albopictus sex separation [PDF]
, 2018 Background: We explored the possibility to improve male/female separation (sexing) in Aedes albopictus by selection of two strains, one toward increasing sex dimorphism and another toward increasing protandry.
Balestrino, Fabrizio +4 more
core +1 more source