scholarly journals Sperm parameters and biochemical components of goat seminal plasma in the rainy and dry seasons in the Brazilian Northeast: the season's influence on the cooling of semen

2013 ◽  
Vol 65 (1) ◽  
pp. 6-12 ◽  
Author(s):  
G.V. Aguiar ◽  
M.F. van Tilburg ◽  
A.G.V. Catunda ◽  
C.K.S. Celes ◽  
I.C.S. Lima ◽  
...  
Keyword(s):  
Citric Acid ◽  
Phospholipase A2 ◽  
Protein Concentration ◽  
Sperm Concentration ◽  
Dry Season ◽  
Motile Cells ◽  
Dry Seasons ◽  
Brazilian Northeast ◽  
Phospholipase A2 Activity ◽  
Dry And Rainy Seasons

The present study aimed to verify the caprine semen characteristics during dry and rainy seasons in the Brazilian Northeast, and the influence of these seasons on cooled semen. Seminal volume, concentration, percentage of motile cells, vigor and spermatic morphology, as well as biochemical profile (fructose, citric acid, P, Ca2+, Mg, total proteins and phospholipase A2 activity) were analyzed. It was observed a reduction (P<0.05) in normal sperm morphology, fructose, citric acid, P, Mg and total protein concentration during the dry season, which did not affect the motility, vigor, volume and sperm concentration. Phospholipase A2 activity was increased during the dry season (P<0.05). The analysis of the semen cooled at 4ºC during 48 hours showed reduction in total motility and vigor sperm during the dry season (P<0.05). Based on these results, we conclude that the best period of year for caprine semen cooling is the rainy season.

scholarly journals Zooplankton biomass of reservoirs in different trophic conditions in the State of São Paulo, Brazil

2006 ◽  
Vol 66 (1b) ◽  
pp. 337-350 ◽  
Author(s):  
S. Sendacz ◽  
S. Caleffi ◽  
J. Santos-Soares
Keyword(s):  
Sao Paulo ◽  
Zooplankton Biomass ◽  
Dry Season ◽  
The State ◽  
Numerical Density ◽  
Calanoid Copepods ◽  
Trophic Conditions ◽  
Density Data ◽  
Dry Seasons ◽  
Dry And Rainy Seasons

This paper reports on a study involving an estimate of the biomass of rotifers, cladocerans, and cyclopoid and calanoid copepods found in reservoirs in different trophic conditions, comparing and relating numerical density data and pointing out differences between the dry and rainy seasons. In terms of numerical densities, both reservoirs were dominated by rotifers, although cladocerans represented a higher biomass in the oligotrophic environment in both seasons. In the eutrophic environment, higher biomass values were found for cyclopoids during the dry season and for cladocerans during the rainy one. Different biomass patterns were observed relating to both the trophic conditions and the rainy and dry seasons.

scholarly journals COMPOSITION AND FREQUENCY OF FLOWER VISITORS IN SOME VARIETIES OF MELON UNDER DIFFERENT CROP CONDITIONS1

2021 ◽  
Vol 34 (4) ◽  
pp. 976-984
Author(s):  
EVA MONICA SARMENTO DA SILVA ◽  
MÁRCIA DE FÁTIMA RIBEIRO ◽  
LÚCIA HELENA PIEDADE KIILL ◽  
MÁRCIA DE SOUSA COELHO ◽  
MARA POLINE DA SILVA
Keyword(s):  
Apis Mellifera ◽  
Organic Farming ◽  
Honey Bee ◽  
Cucumis Melo ◽  
Dry Season ◽  
Flower Visitors ◽  
Main Production ◽  
Brazilian Northeast ◽  
And Behavior ◽  
Dry And Rainy Seasons

ABSTRACT Previous investigations showed that diverse varieties of melon may have different attractiveness for bees. Therefore, the objective of this study was to evaluate the composition, frequency and behavior of flower visitors of some melon (Cucumis melo) cultivars (Amarelo, Pele de Sapo, Cantaloupe, Gália) in different conditions (conventional and organic farming, dry and rainy seasons, with and without mulching and introduction or not of honey bee hives) in the main production poles in the Brazilian Northeast (Petrolina-PE/Juazeiro-BA, Pacajus-CE and Mossoro-RN). Observations and collections of flower visitors occurred from 5p.m. to 6p.m, in non-consecutive days. We recorded 12 species of insects, mostly bees. The most frequent was Apis mellifera (99.68%), but other species appeared sporadically (less than 0.5%): Xylocopa grisescens, Trigona spinipes, Plebeia sp., Melipona mandacaia, Frieseomelitta doedereleini, Halicitidae. Apis mellifera was present in all studied cultivars and sites. Xylocopa grisescens appeared in two poles, but not in Pacajus-CE, Amarelo cultivar. In addition, Trigona spinipes, although present in the three poles, was not recorded on Pele de Sapo. The Amarelo cultivar, under organic farming, without the use of mulching, and presence of honey bee hives, in the Petrolina-PE/Juazeiro-BA pole, in the dry season, was the combination of factors showing the largest number of Apis mellifera as the main visitor of melon flowers.

scholarly journals Cyathostomin larvae: presence on Brachiaria humidicola grass during the rainy and dry seasons of Brazil

2012 ◽  
Vol 21 (1) ◽  
pp. 28-31
Author(s):  
Claudia Navarro dos Santos ◽  
Luciene Soares de Souza ◽  
Vivian Suane de Freitas Vieira ◽  
Jairo Pinheiro ◽  
Maria de Lurdes de Azevedo Rodrigues
Keyword(s):  
Climatic Conditions ◽  
Dry Season ◽  
Southeastern Brazil ◽  
Tropical Region ◽  
Brachiaria Humidicola ◽  
Significant Difference ◽  
Dry Seasons ◽  
The Mean ◽  
Janeiro State ◽  
Dry And Rainy Seasons

The presence of cyathostomin larvae is directly associated to climatic conditions of each region. This study aimed to evaluate the ecology of infective larvae on Brachiaria humidicola during the dry and rainy seasons from October 2007 to September 2008 in a tropical region, Rio de Janeiro state, southeastern Brazil. Stools were collected from the rectum of horses naturally infected with cyathostomins at the beginning of the rainy season (October to March) and dry season (April to September). They were divided into four samples of 500 g and deposited on a grass patch of B. humidicola. Seven days later and every 15 days thereafter samples of feces and grass were collected and processed by the Baermann technique. The mean number of larvae recovered from the grass varied according to the season, with greater recovery of larvae during the peak of the dry season (14,700 L3.kg-¹ DM). There was a statistically significant difference between L3 recovered from feces and grass, but not between L3 recovered from the grass base and apex. These results show that the region’s climate favors the development and survival of infective cyathostomin larvae throughout the year, with a greater number of larvae during the dry season.

scholarly journals Abundance and stratification of soil macroarthropods in a Caatinga Forest in Northeast Brazil

2010 ◽  
Vol 70 (3 suppl) ◽  
pp. 737-746 ◽  
Author(s):  
VFP Araújo ◽  
AG Bandeira ◽  
A Vasconcellos
Keyword(s):  
Rainy Season ◽  
Dry Season ◽  
Soil Biology ◽  
Taxa Richness ◽  
Abundant Taxon ◽  
Dry Seasons ◽  
Physical Effects ◽  
Arid And Semiarid Ecosystems ◽  
Arid And Semiarid ◽  
Dry And Rainy Seasons

In arid and semiarid environments, seasonality usually exerts a strong influence on the composition and dynamics of the soil community. The soil macroarthropods were studied in a Caatinga forest located in the Reserva Particular do Patrimônio Natural (RPPN) Fazenda Almas, São José dos Cordeiros, Paraíba, Brazil. Samples were collected during the dry and rainy seasons following the method proposed by the Tropical Soil Biology and Fertility Program (TSBF), with minor modifications. At each station, 15 soil blocks (20 × 20 × 30 cm: 12 L) were extracted and divided into three layers: A (0-10 cm), B (10-20 cm), and C (20-30 cm). In the rainy and dry seasons 1,306 ± 543(se) and 458 ± 212 ind.m-2 macroarthropods were found, respectively, with 35 and 18 respective taxa recorded. The abundance of individuals and taxa were significantly higher in the rainy season. Isoptera (57.8%) was the most abundant taxon, followed by Hymenoptera: Formicidae (17.2%), Coleoptera larvae (7.3%), and Araneae (3.5%). In the rainy season, abundance in layer A (576 ± 138 ind.m-2) was significantly higher than that of layer C (117 ± 64 ind.m-2), but was not different from layer B (613 ± 480 ind.m-2). There was also no difference between the layer B and C abundances. In the dry season, abundance in layer B (232 ± 120 ind.m-2) was not significantly different compared to layer A (182 ± 129 ind.m-2), but was significantly higher than abundance in layer C (44 ± 35 ind.m-2). During the rainy season, layer A (34 taxa) was significantly richer in taxa than layers B (19 taxa) and C (11 taxa). On the other hand, during the dry season the richness of layers A (12 taxa) and B (12 taxa) was equal, but significantly higher than that of layer C (6 taxa). Richness of taxa and abundance were positively correlated with soil organic matter and negatively correlated with soil temperature. The community of soil macroarthropods in the area of Caatinga studied has taxonomic and functional structures that are relatively complex and is therefore likely to exert an influence on ecosystem productivity due to its physical effects on soil profile and necromass fragmentation, as occurs in other arid and semiarid ecosystems throughout the world.

scholarly journals Diet of Physalaemus cf. cicada (Leptodactylidae) and Bufo granulosus (Bufonidae) in a semideciduous forest

2007 ◽  
Vol 67 (1) ◽  
pp. 125-131 ◽  
Author(s):  
AS. Santana ◽  
FA. Juncá
Keyword(s):  
Rainy Season ◽  
Dry Season ◽  
Pitfall Traps ◽  
Invertebrate Fauna ◽  
Semideciduous Forest ◽  
Electivity Index ◽  
Anuran Species ◽  
Dry Seasons ◽  
Dry And Rainy Seasons

We determined the diet of the two most abundant anuran species which occur in the litter of a semideciduous forest (Lençóis, Bahia, Brazil), Physalaemus cf. cicada and Bufo granulosus in the dry and rainy seasons. Pitfall traps were used to collect anuran and invertebrate fauna, which showed the availability of prey in the environment. Physalaemus cf. cicada was present in both seasons and Bufo granulosus only in the rainy season. Both species fed mainly on Isoptera and Formicidae. However, there is a difference between the rainy and dry seasons concerning the diet of P. cf. cicada. During the rainy season P. cf. cicada consumed less Isoptera and more Formicidae than in the dry season. In the volumetric sense, Orthoptera was the most important alimentary category for P. cf. cicada and B. granulosus. The Jacobs’ electivity index indicated that Physalaemus cf. cicada and Bufo granulosus were specialists in Isoptera.

Study of phospholipase A2 activity in umbilical endothelial cells in toxemia of pregnancy.

1987 ◽  
Vol 18 (6) ◽  
pp. 582-588
Author(s):  
Hiroyuki SEKI ◽  
Toshiharu JIMBO ◽  
Kazuo SATOH
Keyword(s):  
Endothelial Cells ◽  
Phospholipase A2 ◽  
Phospholipase A2 Activity

STUDI BIONOMIK VEKTOR MALARIA DI KECAMATAN KALIBAWANG, KULONPROGO

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Sardjito Eko Windarso dkk
Keyword(s):  
Land Use ◽  
Malaria Vector ◽  
Rainy Season ◽  
Dry Season ◽  
Physical Factors ◽  
Mosquito Vector ◽  
Anopheles Species ◽  
Commercial Farming ◽  
Study Results ◽  
Dry And Rainy Seasons

The increasing of malaria cases in recent years at Kecamatan Kalibawang has been suspected correspond with the conversion of farming land-use which initiated in 1993. Four years after the natural vegetation in this area were changed become cocoa and coffee commercial farming estates, the number of malaria cases in 1997 rose more than six times, and in 2000 it reached 6085. This study were aimed to observe whether there were any differences in density and diversity of Anopheles as malaria vector between the cocoa and mix farming during dry and rainy seasons. The results of the study are useful for considering the appropriate methods, times and places for mosquito vector controlling. The study activities comprised of collecting Anopheles as well as identifying the species to determine the density and diversity of the malaria vector. Both activities were held four weeks in dry season and four weeks in rainy season. The mea-surement of physical factors such as temperature, humidity and rainfall were also conducted to support the study results. Four dusuns which meet the criteria and had the highest malaria cases were selected as study location. Descriptively, the results shows that the number of collected Anopheles in cocoa farming were higher compared with those in mix horticultural farming; and the number of Anopheles species identifi ed in cocoa farming were also more varied than those in the mix horticultural farming.Key words: bionomik vektor malaria, anopheles,

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