Temporal dynamic and economic valuation of recreational fisheries of the lower Cuiabá River,Brazilian Pantanal     

Brayan Allan R. Massaroli  Joisiane Mendes Araújo  Jean C. G. Ortega  André Valle Nunes  Lúcia Mateus  Samuel Elias Silva  Jerry Penha 《Fisheries Management and Ecology》2021,28(4):328-337

Fisheries are the most common ecosystem service that fish provide to human populations, yet recreational fisheries are often overlooked when evaluating such services. Here, the socioeconomic profiles of fishers, the composition of their catches and catch per unit effort (CPUE) are described, to estimate the economic value of the recreational fishery on a stretch of the Cuiabá River in the Brazilian Pantanal. Questionnaires were used to obtain socioeconomic information and fishing yield from fishers for 2013 and 2014. Additionally, a census on the number of fishers and fishing platforms along the sampled region was conducted in 2018. This recreational fishery mostly involves middle class adult males, based mostly in the Cuiabá city metropolitan region. They invested, on average, US$41.1 (SD = US$16.5, median = $35.2) per fishing visit, catching around 19 fish species. Overall, mean CPUE from the recreational fishery was 42.20 fish/fisher.day (17.4 kg/fisher/day). Annual economic value of this recreational fishery was estimated at around US$1.8 million, which highlights the importance of this activity to the local economy. Greater environmental conservation efforts are recommend to ensure the long-term viability of this ecosystem service.  相似文献   

An analysis of the role of local fishermen in the conservation of the loggerhead turtle (Caretta caretta) in Pontal do Ipiranga, Linhares, ES, Brazil     

Antonio de Padua Almeida  Sérgio Lucena Mendes 《Biological conservation》2007,134(1):106-112

The role of researchers and fishermen in the clutch management of loggerhead sea turtles was evaluated for 10 nesting seasons at Pontal do Ipiranga TAMAR station, Linhares, ES. The comparison of nests transferred by researchers and locals (carebeiros) showed that clutches transferred by researchers presented higher clutch size. Clutch size between nests transferred by carebeiros and left in situ did not show significant differences. Hatching success was significantly higher for clutches left in situ than for those transferred to other places in the beach or to hatcheries. The clutches transferred exclusively by researchers achieved a higher hatching success than those transferred partially or totally by carebeiros. The relocation time of clutches collected by carebeiros and handed to researchers affected hatching success. It is recommended that clutches be left in situ, provided they have adequate conditions for monitoring, but careful clutch translocation, independent of the interval elapsed after laying, may also constitute a viable technique for the conservation of sea turtles in the region.  相似文献   

Study of the organic acids composition of quince (Cydonia oblonga Miller) fruit and jam     

Silva BM  Andrade PB  Mendes GC  Seabra RM  Ferreira MA 《Journal of agricultural and food chemistry》2002,50(8):2313-2317

The organic acids present in several samples of quince fruit (pulp and peel) and quince jam (homemade and industrially manufactured) were analyzed by HPLC. The sample preparation was simple, involving only extraction with methanol (40 degrees C) and filtration through a Sep-pack C18 cartridge. The chromatographic separation was achieved using an ion exclusion column, Nucleogel Ion 300 OA (300 x 7.7 mm), in conjunction with a column heating device at 30 degrees C. An isocratic elution with H(2)SO(4) 0.01 N as the mobile phase, with a flow rate of 0.1 mL/min, and UV detection at 214 nm were used. These analyses showed that all samples presented a similar profile composed of at least six identified organic acids: citric, ascorbic, malic, quinic, shikimic, and fumaric acids. Several samples also contained oxalic acid. This study suggests that the organic acids levels and ratios may be useful for the determination of percent fruit content of quince jams. The citric acid value can also be used in the differentiation of the type of manufacture of the commercial quince jams (homemade or industrially manufactured).  相似文献   

Characterization of two Acanthoscelides obtectus alpha-amylases and their inactivation by wheat inhibitors   总被引：1，自引：0，他引：1  

Franco OL  Melo FR  Mendes PA  Paes NS  Yokoyama M  Coutinho MV  Bloch C  Grossi-de-Sá MF 《Journal of agricultural and food chemistry》2005,53(5):1585-1590

Wheat alpha-amylase inhibitors represent an important tool in engineering crop plants against bean bruchids. Because Acanthoscelides obtectus is a devastating storage bean insect-pest, we attempted to purify and characterize its gut alpha-amylases, to study their interaction with active proteinaceous inhibitors. Two digestives alpha-amylases (AoA1 and AoA2) were purified from gut larvae, showing molecular masses of 30 and 45 kDa for each one, respectively. The stoichiometry interaction between these alpha-amylases with two wheat inhibitors (0.19 and 0.53) showed a binding complex of 1:1 enzyme:inhibitor. In vivo activities of these inhibitors against A. obtectus were also evaluated using a rich ammonium sulfate inhibitor fraction (F(20)(-)(40)) and purified inhibitors after reversed phase high-performance liquid chromatography columns. Incorporation of three different inhibitor concentrations (0.25, 0.5, and 1.0% w/w) into artificial seeds showed that addition of the purified 0.19 inhibitor at the highest concentration (1.0%) reduced the larval weight by 80%. Similar data were observed when 0.53 inhibitor was incorporated at 0.5%. When the concentration of purified 0.53 was enhanced to 1.0%, no larvae or adult emergence were observed. Our data suggest that these alpha-amylase inhibitors present great potential for use in Phaseolus genetic improvement programs.  相似文献   

Atypical necrotizing encephalitis associated with systemic canine distemper virus infection in pups     

Alexandre Mendes Amude  Selwyn Arlington Headley  Amauri Alcindo Alfieri  Suely Nunes Esteves Beloni  Alice Fernandes Alfieri 《Journal of veterinary science (Suw?n-si, Korea)》2011,12(4):409-411

This report describes the naturally occurring atypical neuropathological manifestation of systemic canine distemper virus (CDV) infection in two 16-day-old Pit Bull pups. CDV-induced changes affected the gray and white matter of the forebrain while sparing the hindbrain. Histologically, there was necrosis with destruction of the nervous parenchyma due to an influx of inflammatory and reactive cells associated with eosinophilic intranuclear inclusion bodies within glial cells. Positive immunoreactivity against CDV antigens was predominantly observed within astrocytes and neurons. RT-PCR was used to amplify CDV-specific amplicons from brain fragments. These findings suggest the participation of CDV in the etiopathogenesis of these lesions.  相似文献   

Reptarenaviruses in apparently healthy snakes in an Australian zoological collection     

TH Hyndman  RE Marschang  M Bruce  P Clark  SD Vitali 《Australian veterinary journal》2019,97(4):93-102

  相似文献   

Meta-analysis of the prevalence and risk factors associated with bovine neosporosis     

Ribeiro  Claudia Mello  Soares  Isabela Ribeiro  Mendes  Rodrigo Guerrero  de Santis Bastos  Paula Andrea  Katagiri  Satie  Zavilenski  Renato Bacarin  de Abreu  Hudson Felipe Porto  Afreixo  Vera 《Tropical animal health and production》2019,51(7):1783-1800

Tropical Animal Health and Production - Neospora caninum is one of the main infectious agents that cause reproductive disorders in cattle. However, knowledge about the prevalence and causal factors...  相似文献   

Comparative biochemical profiles,production and reproduction status of the post‐partum dairy cows with and without purulent vaginal discharge     

Renan B. Paiano  Camila G. P. Gonalves  Joo P. G. Mendes  Jeannine Bonilla  Daniela B. Birgel  Eduardo H. Birgel Junior 《Reproduction in domestic animals》2019,54(9):1188-1194

Purulent vaginal discharge (PVD) is a prevalent uterine disease of dairy cows during the puerperium that affects the milk production and affects the profitability of farms. The objectives of this study were to evaluate the biochemical profile, the body condition score, the milk production of cows with PVD and the effects PVD on reproductive performance. A total of 338 Holstein dairy cows aged from 3 to 5 years, from three commercial dairy farms, from Brazil, were used. Blood samples were collected within 25 ± 3 days post‐partum from Holstein dairy cows without PVD (control cows, n = 242) and cows with PVD (n = 96), based on scoring of the vaginal discharge. The body condition score and milk production were recorded on the day of sampling. The biochemical profile encompassed albumin, urea, gamma‐glutamyl transferase, calcium, fibrinogen and cholesterol concentrations. The number of services per pregnancy was lower (p < 0.01), and the number of days until first insemination and the median time to pregnancy were higher in cows with PVD (p < 0.01) when compared with control cows. Milk production and body condition score were lower (p < 0.01) in cows with PVD than in control group. Cows with PVD had lower (p < 0.05) serum albumin, urea, calcium and cholesterol concentrations, and higher serum gamma‐glutamyl transferase activity and fibrinogen concentration than cows without PVD. Our results show that cows with PVD have changes in the biochemical profile and negative effects on production and reproduction performance.  相似文献   

Hepatitis E virus infection of slaughtered healthy pigs in Brazil          下载免费PDF全文

A. R. Amorim  G. S. Mendes  G. P. A. Pena  N. Santos 《Zoonoses and public health》2018,65(5):501-504

Hepatitis E virus (HEV) is an emerging pathogen that can be transmitted through contaminated raw or undercooked meat derived from domestic pigs. HEV infections have been documented among pig herds, pig products and environmental samples raising concern about the spread of the virus. HEV genotypes 3 and 4 are considered zoonotic and have been linked to human cases. HEV was detected in 51 of 335 bile samples (15.2%) from healthy pigs in Minas Gerais, Brazil. Phylogenetic analysis of partial sequences from ORF1 and ORF2 regions yielded discordant results, assigning isolates to subtypes 3c and 3i, respectively, suggesting intragenotypic HEV recombination.  相似文献   

Use of the Larval Tarsal Test to determine acaricide resistance in Rhipicephalus (Boophilus) microplus Brazilian field populations     

L. Lovis  M.C. Mendes  J.-L. Perret  J.R. Martins  J. Bouvier  B. Betschart  H. Sager 《Veterinary parasitology》2013,191(3-4):323-331

Acaricide resistance of the cattle tick Rhipicephalus (Boophilus) microplus is widespread in most of the countries where this parasite is present. Bioassays are used to diagnose the level and pattern of resistance in tick populations. In the present study, we describe a detailed protocol of the Larval Tarsal Test (LTT) using simplified equipment and data on the resistance of 17 tick field populations originating from 5 Brazilian states. Nine acaricidal compounds from 5 major classes were tested: organophosphates (OP), synthetic pyrethroids (SP), macrocyclic lactones (ML), phenylpyrazols (PYZ) and amidines. For comparison, four of the tick populations were also tested with the Larval Packet Test (LPT) with one compound per class. The most common resistances were to SP, amitraz and OP, with frequencies of 94%, 88% and 82%, respectively. Resistance to PYZ was also found to be widespread (65%), suggesting a rapid development of fipronil resistance in Brazil. One case of ML resistance and 2 cases of suspected ML resistance were identified with the LTT. The LTT led to higher resistance ratios to all compounds than the LPT, reflecting its high sensitivity to detect resistance. Finally, the LTT allowed testing a larger number of compounds and doses with reduced labour in comparison to the LPT and turned out to be a reliable bioassay to detect resistance in field populations.  相似文献