Fecundity
Mostrando 37-48 de 359 artigos, teses e dissertações.
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37. Biotic potential and reproductive parameters of Spodoptera dolichos (Lepidoptera: Noctuidae) in the laboratory
ABSTRACT The biotic potential and reproductive parameters of Spodoptera dolichos (Fabricius, 1794) were evaluated under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity, and fertility of 25 couples were evaluated. The longevity of females (12.9 days) was not significantly d
Zoologia (Curitiba). Publicado em: 2015-12
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38. EL TIEMPO DE LA COMUNICACIÓN DISCURSIVA. LA SEGUNDA VOZ DEL CARNAVAL Y LAS ESTRATEGIAS DE LA INVERSIÓN
ABSTRACT This paper proposes to relieve the place that Mikhail Bakhtin assigns to relationships between enunciation's time and discoursive's time. The concepts of conscience, intention, ideological creativity and understanding come to the delimitation of other concepts, structurants and decisive, as the strategic interaction's time. The dialogical perspectiv
Trab. linguist. apl.. Publicado em: 2015-12
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39. Reproductive aspects of Hyalella carstica (Amphipoda: Hyalellidae) in a natural environment in southeastern Brazil
Abstract The reproductive aspects of populations are important determinants of their ability to maintain themselves throughout time. In the case of amphipods from the genus Hyalella Smith, 1874, the reproductive period is easily determined by the presence of ovigerous females and pre-copula pairs in the population. This study evaluated the fecundity, pairing
Nauplius. Publicado em: 2015-12
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40. Effect of Leishmania spp infection on the survival, life expectancy, fecundity and fertility of Lutzomyia longipalpis s.l. and Lutzomyia pseudolongipalpis
We evaluated the effects of Leishmania spp infection on several population parameters of Lutzomyia longipalpis sensu lato and Lutzomyia pseudolongipalpis, vectors of visceral leishmaniasis in Venezuela, under experimental conditions during the first post-feeding period. Females of both species were allowed to feed and engorge on a suspension of fresh washed
Mem. Inst. Oswaldo Cruz. Publicado em: 30/06/2015
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41. Temporal variation in population structure of the isopod Urobopyrus processae Richardson, 1904 (Isopoda: Bopyridae) infesting the branchial chamber of the night shrimp Ambidexter symmetricus Manning and Chace, 1971 (Decapoda: Processidae)
ABSTRACTCaridean shrimps are often infested by ectoparasites from the isopod family Bopyridae. Urobopyrus processae is a widespread species of bopyrid parasitizing the branchial (gill) chambers of members of the caridean family Processidae, including Ambidexter symmetricus. We examined hypotheses on differential infestation based on gender, castration of the
Nauplius. Publicado em: 2015-06
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42. Maternal age influences on reproductive rates in Nile tilapia (Oreochromis niloticus)
In this study we examined the effects of the maternal age on the fecundity (absolute and relative), egg production, and fertilization rates of Nile tilapia (Oreochromis niloticus). Females were divided into three groups: Group 1 (6 years old), Group 2 (3 years old), and Group 3 (8 months old). Males of eight months were used in all groups. Twice a week, the
R. Bras. Zootec.. Publicado em: 2015-04
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43. Reproductive studies of Anchoa marinii Hildebrand, 1943 (Actinopterygii: Engraulidae) in the nearby-coastal area of Mar Chiquita coastal lagoon, Buenos Aires, Argentina
The aim of the present study provides the first results on the reproductive biology of the anchovy, Anchoa marinii, in a nearby-coastal area of Mar Chiquita coastal lagoon, 37º32'00"S 57º19'00"W, Argentina. To perform this, we employed mainly female gonads, at both microscopic and macroscopic levels. The oocyte diameter distribution and the microscopy anal
Neotrop. ichthyol.. Publicado em: 2015-03
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44. Reproductive biology of Cetengraulis edentulus (Cuvier, 1829), the major fishery resource in Guanabara Bay, Brazil
Cetengraulis edentulus is a broadely distributed engraulid in Southwest Atlantic, currently accounting for the main fish species commercially exploited at Guanabara Bay, Brazil. This study aimed to extend the knowledge on reproduction of C. edentulus at Guanabara Bay and to test whether some descriptors of reproductive activity, especially the gonadosomatic
Neotrop. ichthyol.. Publicado em: 02/12/2014
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45. Demography of the endangered tree species Ocotea porosa (Lauraceae) along a gradient of forest disturbance in southern Brazil
Ocotea porosa (Ness) Barroso (Lauraceae), a typical tree of the southern Atlantic Forest in Brazil, was heavily exploited for timber in the last century. With the aim of examining the status of the remaining populations, we surveyed five forest fragments in the state of Paraná, in southern Brazil, and evaluated whether disturbances caused by selective loggi
Acta Bot. Bras.. Publicado em: 2014-12
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46. 'BRS Vitória' - a novel seedless table grape cultivar exhibiting special flavor and tolerance to downy mildew (Plamopara viticola)
'BRS Vitória' is a novel cultivar of black seedless table grape. Its main traits meet the most important demands from the viticulture segment in Brazil.It is recommended for cultivation in tropical and subtropical areas, with excellent horticultural performance, high bud fecundity and resistance to downy mildew, the most important disease which affects grap
Crop Breed. Appl. Biotechnol.. Publicado em: 2014-10
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47. Biological aspects of the beetle Delphastus davidsoni fed with whitefly eggs laid on tomato genotypes
Many plant breeding programs have incorporated plant resistance characteristics without considering how this resistance may affect the natural enemies of plant pests. We evaluated the biological aspects of Delphastus davidsoni (Gordon) fed with Bemisia tabaci B biotype eggs laid on tomato genotypes with different trichome densities and types. On LA1335 and N
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-10
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48. Description of microsporidia in simulids: molecular and morphological characterization of microsporidia in the larvae of Simulium pertinax Kollar (Diptera: Simuliidae)
IntroductionMicrosporidia constitute the most common black fly pathogens, although the species' diversity, seasonal occurrence and transmission mechanisms remain poorly understood. Infections by this agent are often chronic and non-lethal, but they can cause reduced fecundity and decreased longevity. The objective of this study was to identify microsporidia
Rev. Soc. Bras. Med. Trop.. Publicado em: 2014-10