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排序方式: 共有160条查询结果,搜索用时 125 毫秒
101.
Lobo Ailton Pinheiro da Camara Claudio Augusto Gomes de Melo João Paulo Ramos de Moraes Marcílio Martins 《植物病害和植物保护杂志》2019,126(1):79-87
Journal of Plant Diseases and Protection - Diaphania hyalinata is an important pest in organic melon crops and has caused considerable harm to growers in northeastern Brazil. The aim of the present... 相似文献
102.
Marcus Frederico Martins Pinheiro Silvia Maria Guimarães de Souza & Leonardo José Gil Barcellos 《Aquaculture Research》2003,34(12):1047-1052
This experiment was conducted to evaluate the seminal characteristics of Nile tilapia males exposed to water‐borne 17α,20β‐dihydroxy‐4‐pregnen‐3‐one (17,20βP). Male Nile tilapia (Oreochromis niloticus L.) were exposed to the steroidal pre‐ovulatory pheromone 17,20βP, added to water at a concentration of 5×10?9 M. The pheromone‐exposed males had higher sperm volume and concentration. In addition, the spermatozoa contained in the sperm had higher motility and the motility duration was longer than ethanol‐exposed males (control group). The percentage of live spermatozoa was not affected by the treatments. Our results suggest that this pheromone can improve sperm quality characteristics and could become a non‐invasive method for enhancing spawning in Nile tilapia. 相似文献
103.
Ramos Ana Paula Marques Gomes Felipe David Georges Pinheiro Mayara Maezano Faita Furuya Danielle Elis Garcia Gonçalvez Wesley Nunes Junior José Marcato Michereff Mirian Fernandes Furtado Blassioli-Moraes Maria Carolina Borges Miguel Alaumann Raúl Alberto Liesenberg Veraldo de Castro Jorge Lúcio André Osco Lucas Prado 《Precision Agriculture》2022,23(2):470-491
Precision Agriculture - The Spodoptera frugiperda (i.e., fall armyworm) causes irreversible damage in cotton cultivars, and its visual inspection on plants is a burdensome task for humans. A recent... 相似文献
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Garcia JS Hooper CS Simões RO Dos Santos MA Maldonado A Pinheiro J 《Veterinary parasitology》2011,178(1-2):86-92
Tests were performed to evaluate the biochemical alterations in Rattus norvegicus after infection by the intestinal trematode Echinostoma paraensei. The rodents received 150 metacercariae each, serum samples were collected and the parasite load was quantified weekly until the fifth week of infection. The levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALKP), gamma-glutamyl transferase (GGT), bilirubin, glucose, total proteins and fractions and hepatic glycogen were determined. All the animals exposed to the metacercariae were infected in the first week and worms were recovered up to the third week after infection. The levels of AST, ALT, GGT, bilirubin and globulin rose in the first and/or second week and declined thereafter to levels near those of the control group. In contrast, the level of total proteins in the plasma fell significantly in the first week while the ALKP activity went down only in the fourth and fifth weeks in relation to the control group. There was no significant difference in the levels of albumin, glycogen and glucose. Infection by E. paraensei in R. norvegicus causes changes in the hepatic function, possibly resulting from the cholestasis produced by the partial obstruction of the bile duct by the helminths. 相似文献
106.
Sevá Ada P Sercundes MK Martins J de Souza SO da Cruz JB Lisboa CS Correa SH Soares RM 《Journal of zoo and wildlife medicine》2011,42(2):326-329
The present study aimed to determine whether Cryptosporidium oocysts were present in stools from captive snakes at Funda??o Parque Zoológico (Zoological Park Foundation) in S?o Paulo, Brazil. Two collections were performed; the first in July 2008 and the second in February 2009. Fecal samples were collected from 74 enclosures that housed 101 individuals of 23 snake species. The stool specimens collected from 16 out of the 74 enclosures (21.6%) contained Cryptosporidium spp. oocysts; all of them were confirmed as Cryptosporidium serpentis, using molecular techniques. Only in three (18.7%) out of the 16 enclosures with positive samples were there animals with clinical signs compatible with infection by C. serpentis, such as regurgitation and significant progressive weight loss. From the results, it was concluded that diagnostic examinations need to be performed periodically, even on clinically healthy animals, as a preventive measure. 相似文献
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Camille E. Granada Letícia Arruda Bruno Brito Lisboa Luciane M. P. Passaglia Luciano K. Vargas 《Biology and Fertility of Soils》2014,50(1):123-132
In this study, rhizobia strains isolated from white clover (Trifolium repens) root nodules were evaluated in an effort to identify an efficient nitrogen-fixing rhizobia strain that can also improve the growth of rice plants (Oryza sativa). White clover plants were collected from seven sites in south Brazil, and 78 native rhizobia isolates were obtained. The genetic diversity analysis of those isolates was carried out by BOX-polymerase chain reaction. Overall, the native rhizobia isolated showed a high genetic diversity, but when the bacterial isolates from the same site were compared, the diversity was lower. One native rhizobia, POA3 (isolated from the Porto Alegre locality), was able to promote the growth of both plants and is therefore a good candidate for new inoculant formulation. Finally, we can conclude that the community of native rhizobia symbiont of white clover plants in southern Brazil is highly diverse and the growth promotion effect of rhizobia inoculation on rice plants was more pronounced in a poor nutrient substrate condition than in a rich nutrient substrate condition. 相似文献
110.
Camargo Letcia Kurchaidt Pinheiro Pilati Laura Zchonski Felipe Liss de Resende Juliano Tadeu Vilela Da-Silva Paulo Roberto 《Genetic Resources and Crop Evolution》2022,69(5):1879-1888
Genetic Resources and Crop Evolution - The cultivated strawberry [Fragaria × ananassa (Duchesne ex Weston) Duchesne ex Rozier] is one of the most valuable small fruits worldwide.... 相似文献