scholarly journals Decapod abundance and species richness in the bycatch of Xiphopenaeus kroyeri (Heller, 1862) fishery, Santa Catarina, southern Brazil

Nauplius ◽  
2019 ◽  
Vol 27 ◽  
Author(s):  
Gilson Stanski ◽  
Geslaine R. L. Goncalves ◽  
Raphael C. Grabowski ◽  
Milena R. Wolf ◽  
Antonio Leão Castilho
Keyword(s):  
Species Richness ◽  
Southern Brazil ◽  
Santa Catarina ◽  
Xiphopenaeus Kroyeri

scholarly journals Mosquitoes (Diptera: Culicidae) from crepuscular period in an Atlantic Forest area in Southern Brazil

2017 ◽  
Vol 77 (1) ◽  
pp. 60-67 ◽  
Author(s):  
E. Orlandin ◽  
E. B. Santos ◽  
M. Piovesan ◽  
M. A. Favretto ◽  
A. H. Schneeberger ◽  
...  
Keyword(s):  
Species Richness ◽  
Atlantic Forest ◽  
Abiotic Factors ◽  
Abundant Species ◽  
Forest Area ◽  
Peak Activity ◽  
Southern Brazil ◽  
Santa Catarina ◽  
Specific Composition ◽  
Etiological Agents

Abstract Crepuscular period is one of the factors that may influence the biting activity of mosquitoes. Many of these insects have a peak activity in this period. The purpose of this study was to investigate the afternoon crepuscular activity of Culicidae in a remaining area of Atlantic Forest in western Santa Catarina, southern Brazil. Moreover, the possible influence of abiotic factors, the abundance and species richness were verified. In order to better analyze the influence of crepuscular period in specific composition and abundance of mosquitoes, the dusk was divided into three periods: pre-sunset, sunset and post-sunset. At the end of the study, nine hundred and eight four specimens distributed in 12 genera and 23 species were collected. Trichoprosopon pallidiventer (Lutz, 1905) (59.76%), Aedes crinifer (Theobald, 1903) (8.13%), Ae. scapularis (Rondani, 1848) (5.89%) were the most abundant species. Spring time presented the greatest abundance and species richness. During the study, among the three periods evaluated, pre-sunset had the greatest abundance and post-sunset the lowest. Pre-sunset and sunset had the greatest similarity between species. Regarding to the abiotic factors evaluated seven and 15 days before sampling, they did not present significant correlation for the three most abundant species. However, temperature had a positive correlation to these species. Moreover, the correlation between collected species and its possible role as vectors of etiological agents of diseases was discussed.

scholarly journals Bee diversity (Hymenoptera, Apoidea) in Araucaria forest in southern Brazil

2016 ◽  
Vol 3 (2) ◽  
Author(s):  
Denise Monique Dubet da Silva Mouga ◽  
Paulo Nogueira-Neto ◽  
Manuel Warkentin ◽  
Vanessa Feretti ◽  
Enderlei Dec
Keyword(s):  
Species Richness ◽  
Apis Mellifera ◽  
Flowering Plants ◽  
Southern Brazil ◽  
Santa Catarina ◽  
Araucaria Forest ◽  
Accumulation Curve ◽  
Bee Diversity ◽  
Richness Estimators

The apifauna of an araucaria forest in southern Brazil was studied during 2001 – 2003, using entomological nets on flowering plants. A total of 2,749 individuals were sampled from five subfamilies and 93 species of bees. A total of 82 species with up to 10 individuals were sampled and 29 species had no distribution for Santa Catarina. Non-corbiculate Apidae and Halictidae species predominated as well as individuals of corbiculate Apidae and Halictidae. There was a decrease in species richness in cold seasons, being then sampled only Augochloropsis sp. 01, Augochloropsis sp. 10, Exomalopsis tomentosa, Neocorynura aenigma, Paroxystoglossa brachycera, Trigona spinipes and Apis mellifera. A bivoltine pattern was noticed, with a peak in May and in September-November, for richness and abundance. Ecological indexes over the months were different with and without A. mellifera. The bee accumulation curve remained in elevation until the end of sampling. The richness estimators indicated values of 142 and 175 species. The bee species were sampled on 125 species of plants of 40 famillies and the most visited were Asteraceae, Fabaceae/Solanaceae, Euphorbiaceae/Lamiaceae, Malvaceae/Rosaceae and Commelinaceae/Cucurbitaceae/ Liliaceae/Verbenaceae. A total of 48 species of plants characteristics of araucaria forests were sampled.

scholarly journals Simple does not mean poor: grasslands and forests harbor similar ant species richness and distinct composition in highlands of southern Brazil

2018 ◽  
Vol 18 (3) ◽  
Author(s):  
Cristian Luan Klunk ◽  
Eduardo Luís Hettwer Giehl ◽  
Benedito Cortês Lopes ◽  
Frederico Rottgers Marcineiro ◽  
Félix Baumgarten Rosumek
Keyword(s):  
Species Richness ◽  
Species Composition ◽  
Atlantic Forest ◽  
The State ◽  
Brazilian Coast ◽  
Mountain Range ◽  
Southern Brazil ◽  
Santa Catarina ◽  
Ant Communities ◽  
Mixed Forests

Abstract: Several studies addressed ant communities in the dense Atlantic Forest that runs along the Brazilian coast. However, comparatively little is known about the mixed forests and grasslands that occur in the southern range of the Atlantic Forest domain. In this study we performed the first standardized assessment of ants in the forest-grassland mosaic found in the highlands of the state of Santa Catarina. We aimed to investigate and compare ant richness and composition between mixed forests and grasslands in the main mountain range of south Brazil. Ants were collected in two years with ground pitfalls, tree pitfalls and litter samples. Sixty ant species were recorded, resulting in 22 new records for "Planalto Serrano" region and three for the state of Santa Catarina: Eurhopalothrix depressa, Pheidole radoszkowskii and Wasmannia williamsoni. There was significant dissimilarity in ant species composition between grasslands and forests, but no difference in ant species richness, even considering the higher number of strata in mixed forests. Similar richness and low number of arboreal species suggest that this ant community is structured similarly to temperate ones. Both habitats presented a large proportion of exclusive species. The fact that species composition between grassland and forest areas differed, coupled with the similarity in species richness between habitats and the record of new ant species for the region, calls for strong conservation efforts in grasslands of southern Brazil, which still are little protected by conservation areas.

Cyclone Bomb hits Southern Brazil in 2020

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Ricardo Gobato ◽  
Alireza Heidari
Keyword(s):  
High Pressure ◽  
Atmospheric Pressure ◽  
High Speed ◽  
Satellite Images ◽  
The State ◽  
Southern Brazil ◽  
Santa Catarina ◽  
High Area ◽  
South Of Brazil ◽  
Rapid Drop

An “explosive extratropical cyclone” is an atmospheric phenomenon that occurs when there is a very rapid drop in central atmospheric pressure. This phenomenon, with its characteristic of rapidly lowering the pressure in its interior, generates very intense winds and for this reason it is called explosive cyclone, bomb cyclone. With gusts recorded of 116 km/h, atmospheric phenomenon – “cyclone bomb” (CB) hit southern Brazil on June 30, the beginning of winter 2020, causing destruction in its influence over. One of the cities most affected was Chapecó, west of the state of Santa Catarina. The satellite images show that the CB generated a low pressure (976 mbar) inside it, generating two atmospheric currents that moved at high speed. In a northwest-southeast direction, Bolivia and Paraguay, crossing the states of Parana and Santa Catarina, and this draft that hit the south of Brazil, which caused the destruction of the affected states.  Another moving to Argentina, southwest-northeast direction, due to high area of high pressure (1022 mbar). Both enhanced the phenomenon.

scholarly journals Toward a better understanding of the subtropical Atlantic Forest in the state of Santa Catarina, Brazil: tree sampling accuracy, species richness and frequency of rare species

2014 ◽  
Vol 28 (3) ◽  
pp. 382-391 ◽  
Author(s):  
Vanessa Leite Rezende ◽  
Pedro V. Eisenlohr ◽  
André Luís de Gasper ◽  
Alexander Christian Vibrans ◽  
Ary Teixeira de Oliveira-Filho
Keyword(s):  
Species Richness ◽  
Atlantic Forest ◽  
Rare Species ◽  
The State ◽  
Santa Catarina

scholarly journals Ictiofauna acompanhante na pesca artesanal do camarão sete-barbas (Xiphopenaeus kroyeri) no litoral sul do Brasil

2013 ◽  
Vol 13 (1) ◽  
pp. 165-175 ◽  
Author(s):  
Mário Cesar Sedrez ◽  
Joaquim Olinto Branco ◽  
Felipe Freitas Júnior ◽  
Herbert Silva Monteiro ◽  
Edison Barbieri
Keyword(s):  
Santa Catarina ◽  
Xiphopenaeus Kroyeri

A pesca artesanal dirigida ao camarão sete-barbas (Xiphopenaeus kroyeri), usando o método de arrasto motorizado com portas, tem sido praticada na costa de Santa Catarina, onde ele gera emprego e renda, e ajuda a manter a tradição cultural tradicional açoriana viva, desde 1960. Com o objectivo de analisar a qualidade e a quantidade das capturas acidentais da ictiofauna, efetuou-se sazonalmente, dois arrastos por isóbata (10-20‑30 m) entre novembro/2009 e agosto/2010, duração de 20 min/cada, velocidade média dois nós e, registrados temperaturas e salinidades da água de fundo. As capturas totalizaram 10868 peixe (208.34 kg), distribuídos em 31 famílias e 62 espécies, com uma proporção de peixe/camarão de 5,19/1 kg. A família mais abundante foi Sciaenidae (86.13%), seguido por Batrachoididae (2.70%) e Trichiuridae (2,44%). Os índices de diversidade e equabilidade apresentaram padrões similares de variação, os maiores valores ocorreram na Primavera na profundidade de 30 m e a mais baixa no inverno, a 20 m. A análise de Cluster formou quatro agrupamentos, sendo um deles, pequeno e dominante de Sciaenidae Stellifer brasiliensis, S. rastrifer, Paralonchurus brasiliensis, Isopisthus parvipinnis e Larimus breviceps. Os exemplares jovens dessas espécies e de outras, com pouco ou sem valor comercial, camarões miúdos e demais macro-invertebrados acompanhantes capturados são descartados ao mar, geralmente mortos. Além do impacto nas cadeias tróficas, essa prática contínua, pode agravar ainda mais a situação do pescador artesanal com o declínio desses recursos nas capturas futuras

scholarly journals Occurrence of abortions induced by Neospora caninum in dairy cattle from Santa Catarina, southern Brazil

2017 ◽  
Vol 26 (3) ◽  
pp. 292-298 ◽  
Author(s):  
Cesar Augusto Barbosa de Macedo ◽  
Madlaine Frigo Silveira Barbosa de Macedo ◽  
Ana Carolina Miura ◽  
Alessandra Taroda ◽  
Sergio Tosi Cardim ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
High Frequency ◽  
Neospora Caninum ◽  
Enzyme Linked Immunosorbent Assay ◽  
Southern Brazil ◽  
Chain Reaction ◽  
Santa Catarina ◽  
Tissue Samples ◽  
Polymerase Chain

Abstract The aim of the present study was to investigate the occurrence of N. caninum associated with abortions of dairy cattle from Santa Catarina state, southern Brazil by using enzyme-linked immunosorbent assay (ELISA), immunohistochemistry (IHC), and polymerase chain reaction (PCR). Blood from dairy cows that aborted along with intrathoracic fluid and tissue samples (brain, heart, liver, and lung) from their fetuses were collected and used for serology; PCR, histopathological, and immunohistochemistry (IHC) evaluations were also conducted. Twenty-one cows (51.2%) out of 41, and eight fetuses (26.7%) out of 30 were ELISA (HerdCheck, IDEXX) positive for N. caninum. Dams > 36 months of age had a higher risk of being serum positive than younger animals. PCR and IHC revealed that 38.8% (14/36) and 25.0% (9/36) of the fetuses were positive for N. caninum, respectively for each of the tests. Seropositive cows had a higher frequency of fetuses that were also positive by either intrathoracic fluid, PCR, or IHC. In summary, the present study observed a high frequency of N. caninum in abortions from dairy cows from southern Brazil, with a higher N. caninum prevalence found in cows that were older than 36 months. In addition, serology, PCR, and IHC should be used all together for better diagnosis of neosporosis in cattle.

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