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1.
F. Romão B. R. Quintella T. J. Pereira P. R. Almeida 《Zeitschrift fur angewandte Ichthyologie》2012,28(1):26-30
The main purpose of this study was to gather swimming performance information for two endemic cyprinids of the Iberian Peninsula to contribute to the optimization of fish ways. Critical swimming speed (Ucrit) was determined for the Tagus nase Pseudochondrostoma polylepis (Steindachner, 1864) and for the bordallo Squalius carolitertii (Doadrio, 1988) in a swimming tunnel. From a total of 80 P. polylepis tested, the mean (± SD) Ucrit observed was 0.78 ± 0.15 ms?1 (c. 3.74 ± 0.93 BL s?1); the 68 S. carolitertii tested presented an Ucrit of 0.54 ± 0.1 ms?1 (c. 4.43 ± 0.74 BL s?1). Significant interspecific differences were found between the Ucrit of the tested cyprinids. Intraspecific comparisons between the Ucrit and the variables of size, sex, condition factor and gonado‐somatic index were also made. No sex‐or gonad maturation‐related differences between the Ucrit were identified, but the robust P. polylepis were found to be stronger swimmers. Water velocities in fish ways for P. polylepis and S. carolitertii should aim, on average, for lower than 0.7 and 0.5 ms?1, respectively. 相似文献
2.
Carla Oliveira-Ribeiro Maria Inês Fernandes Pimentel Liliane de Ftima Antonio Oliveira rica de Camargo Ferreira e Vasconcellos Fatima Conceio-Silva Armando de Oliveira Schubach Aline Fagundes Cintia Xavier de Mello Eliame Mouta-Confort Luciana de Freitas Campos Miranda Claudia Maria Valete-Rosalino Ana Cristina da Costa Martins Raquel de Vasconcellos Carvalhaes de Oliveira Leonardo Pereira Quintella Marcelo Rosandiski Lyra 《PLoS neglected tropical diseases》2021,15(9)
BackgroundTreatment of cutaneous leishmaniasis (CL) remains challenging since the drugs currently used are quite toxic, thus contributing to lethality unrelated to the disease itself but to adverse events (AE). The main objective was to evaluate different treatment regimens with meglumine antimoniate (MA), in a reference center in Rio de Janeiro, Brazil.MethodologyA historical cohort of 592 patients that underwent physical and laboratory examination were enrolled between 2000 and 2017. The outcome measures of effectiveness were epithelialization and complete healing of cutaneous lesions. AE were graded using a standardized scale. Three groups were evaluated: Standard regimen (SR): intramuscular (IM) MA 10–20 mg Sb5+/kg/day during 20 days (n = 46); Alternative regimen (AR): IM MA 5 mg Sb5+/kg/day during 30 days (n = 456); Intralesional route (IL): MA infiltration in the lesion(s) through subcutaneous injections (n = 90). Statistical analysis was performed through Fisher exact and Pearson Chi-square tests, Kruskal-Wallis, Kaplan-Meier and log-rank tests.ResultsSR, AR and IL showed efficacy of 95.3%, 84.3% and 75.9%, with abandonment rate of 6.5%, 2.4% and 3.4%, respectively. IL patients had more comorbidities (58.9%; p = 0.001), were mostly over 50 years of age (55.6%), and had an evolution time longer than 2 months (65.6%; p = 0.02). Time for epithelialization and complete healing were similar in IL and IM MA groups (p = 0.9 and p = 0.5; respectively). Total AE and moderate to severe AE that frequently led to treatment interruption were more common in SR group, while AR and IL showed less toxicity.Conclusions/SignificanceAR and IL showed less toxicity and may be good options especially in CL cases with comorbidities, although SR treatment was more effective. IL treatment was an effective and safe strategy, and it may be used as first therapy option as well as a rescue scheme in patients initially treated with other drugs. 相似文献
3.
Michael J. Hansen Charles P. Madenjian Jeffrey W. Slade Todd B. Steeves Pedro R. Almeida Bernardo R. Quintella 《Reviews in Fish Biology and Fisheries》2016,26(3):509-535
The sea lamprey Petromyzon marinus (Linnaeus) is both an invasive non-native species in the Laurentian Great Lakes of North America and an imperiled species in much of its native range in North America and Europe. To compare and contrast how understanding of population ecology is useful for control programs in the Great Lakes and restoration programs in Europe, we review current understanding of the population ecology of the sea lamprey in its native and introduced range. Some attributes of sea lamprey population ecology are particularly useful for both control programs in the Great Lakes and restoration programs in the native range. First, traps within fish ladders are beneficial for removing sea lampreys in Great Lakes streams and passing sea lampreys in the native range. Second, attractants and repellants are suitable for luring sea lampreys into traps for control in the Great Lakes and guiding sea lamprey passage for conservation in the native range. Third, assessment methods used for targeting sea lamprey control in the Great Lakes are useful for targeting habitat protection in the native range. Last, assessment methods used to quantify numbers of all life stages of sea lampreys would be appropriate for measuring success of control in the Great Lakes and success of conservation in the native range. 相似文献
4.
Catarina Sofia Mateus Pedro Raposo Almeida Natacha Mesquita Bernardo Ruivo Quintella Maria Judite Alves 《PloS one》2016,11(2)
Ice ages are known to be the most dominant palaeoclimatic feature occurring on Earth, producing severe climatic oscillations and consequently shaping the distribution and the population structure of several species. Lampreys constitute excellent models to study the colonization of freshwater systems, as they commonly appear in pairs of closely related species of anadromous versus freshwater resident adults, thus having the ability to colonize new habitats, through the anadromous species, and establish freshwater resident derivates. We used 10 microsatellite loci to investigate the spatial structure, patterns of gene flow and migration routes of Lampetra populations in Europe. We sampled 11 populations including the migratory L. fluviatilis and four resident species, L. planeri, L. alavariensis, L. auremensis and L. lusitanica, the last three endemic to the Iberian Peninsula. In this southern glacial refugium almost all sampled populations represent a distinct genetic cluster, showing high levels of allopatric differentiation, reflecting long periods of isolation. As result of their more recent common ancestor, populations from northern Europe are less divergent among them, they are represented by fewer genetic clusters, and there is evidence of strong recent gene flow among populations. These previously glaciated areas from northern Europe may have been colonized from lampreys expanding out of the Iberian refugia. The pair L. fluviatilis/L. planeri is apparently at different stages of speciation in different locations, showing evidences of high reproductive isolation in the southern refugium, and low differentiation in the north. 相似文献
5.
B. R. Quintella C. S. Mateus J. L. Costa I. Domingos P. R. Almeida 《Zeitschrift fur angewandte Ichthyologie》2010,26(3):432-435
The prime objective of this study was to evaluate differences between the swimming performance of two distinct life stages of European eels. The critical swimming speed (Ucrit) of 29 yellow‐ and 33 silver‐phase eels was evaluated in a swim tunnel. Silver‐phase eels showed a better swimming performance (Ucrit = 0.66 ms?1) than yellow individuals (Ucrit = 0.43 ms?1). Male and female silver eels reached an identical Ucrit despite their different sizes, which may be a strategy to increase the synchronization of arrival at the spawning grounds. 相似文献
6.
Daniel Cesar Silva da Costa Mariana Reuter Palmeiro Jo?o Soares Moreira Ana Cristina da Costa Martins Aline Fagundes da Silva Maria de Fátima Madeira Leonardo Pereira Quintella Eliame Mouta Confort Armando de Oliveira Schubach Fátima da Concei??o Silva Cláudia Maria Valete-Rosalino 《PloS one》2014,9(11)
7.
Maria Jo?o Lan?a Maria Machado Catarina S. Mateus Marta Louren?o Ana F. Ferreira Bernardo R. Quintella Pedro R. Almeida 《PloS one》2014,9(9)
This study hypothesizes the existence of three groups of sea lamprey Petromyzon marinus L. in Portugal (North/Central group, Tagus group, and Guadiana group), possibly promoted by seabed topography isolation during the oceanic phase of the life cycle. Within this context, our purpose was to analyze the existence of a stock structure on sea lamprey populations sampled in the major Portuguese river basins using both morphological characters and heart tissue fatty acid signature. In both cases, the multiple discriminant analysis revealed statistically significant differences among groups, and the overall corrected classification rate estimated from cross-validation procedure was particularly high for the cardiac muscle fatty acid profiles (i.e. 83.8%). Morphometric characters were much more useful than meristic ones to discriminate stocks, and the most important variables for group differentiation were eye length, second dorsal fin length and branchial length. Fatty acid analysis showed that all lampreys from the southern Guadiana group were correctly classified and not mixing with individuals from any other group, reflecting a typical heart fatty acid signature. Our results revealed that 89.5% and 72.2% of the individuals from the Tagus and North/Central groups, respectively, were also correctly classified, despite some degree of overlap between individuals from these groups. The fatty acids that contributed to the observed segregation were C16:0; C17:0; C18:1ω9; C20:3ω6 and C22:2ω6. Detected differences are probably related with environmental variables to which lampreys may have been exposed, which leaded to different patterns of gene expression. These results suggest the existence of three different sea lamprey stocks in Portugal, with implication in terms of management and conservation. 相似文献
8.
The swimming capacity of Barbus bocagei was measured with the critical swimming speed (Ucrit) standard test in a modified Bla?ka‐type swim tunnel. Sixty B. bocagei were tested and they exhibited a mean ±s .d . Ucrit of 0·81 ± 0·11 m s?1 or 3·1 ± 0·86 total lengths per second (LT s?1). Sex had no effect on Ucrit but significant differences were found between the swimming performance of fish with distinct sizes. 相似文献
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10.
R. Almeida S. E. Tanner C. S. Mateus F. Ribeiro B. R. Quintella 《Journal of fish biology》2024,104(4):1241-1246
European sea bass (Dicentrarchus labrax [Linnaeus, 1758]) is a euryhaline marine migrant fish highly valuable for fisheries and aquaculture. Although juveniles are known to use estuaries and occasionally move to freshwater environments, these freshwater incursions had not been reported for adults. Recently, this behavior was observed in the Tagus River (Portugal) for adults occurring up to 150 km from the river mouth, about 80 km upstream from the tidal influence, suggesting the existence of a freshwater contingent. Fisheries management of sea bass should consider the putative existence of a freshwater contingent. 相似文献