155,157 research outputs found
A polinização da pereira europeia (pyrus communis L. cv. Rocha) no sul do Brasil
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Recursos Genéticos Vegetais, Florianópolis, 2014No Brasil, a produção de pera é insuficiente para atender a demanda interna, gerando uma crescente necessidade de importação de frutas que podem ser produzidas nas regiões mais frias. Por isso, a pera é a fruta fresca importada em maior quantidade pelo Brasil. Por ser alógama devido à incompatibilidade gametofítica, a maioria das cultivares europeias de pereiras não produzem frutos com sementes sem a presença de insetos polinizadores. Neste contexto, foram realizados ensaios buscando elucidar os aspectos da biologia reprodutiva da pereira portuguesa (Pyrus communis L. cv. Rocha) e suas cultivares polinizadoras, assim como avaliar a qualidade das colmeias destinadas à polinização. Os resultados mostraram que a fenologia das cvs. Rocha e suas polinizadoras diferiu entre elas e entre os anos, podendo afetar significativamente a polinização. A data aproximada da plena floração das cultivares estudadas foi similar em 2012 (? 17//09), porém, diferiu em 2013. Foi observado que a cv. Rocha polinizada com pólen de cultivares compatíveis apresentou elevada frutificação efetiva, chegando a atingir até 67,8% de frutificação efetiva sem a aplicação exógena de giberelina. Além disso, nestes frutos observou-se maior número de sementes (>5 sementes.fruto-1), o que acarretou frutos com melhores índices de qualidade comparativamente com outros tratamentos de polinização. A autopolinização promoveu a formação de frutos (10,9% de frutificação efetiva em 2012 e 1,66% em 2013), mas em quantidade e qualidade inferiores aos frutos oriundos de polinização cruzada. A partenocarpia natural foi observada na cv. Rocha, mas esta incapaz de sustentar produções comercialmente viáveis (4,16% de frutificação efetiva). A aplicação exógena de ácido giberélico mostrou ser uma opção para o aumento da frutificação efetiva através do estímulo da formação de frutos partenocárpicos, contudo foi observada uma variação na sua eficiência entre os anos (frutificação efetiva de 74,1% em 2012, reduzindo para 30,0% no ano seguinte) e a tendência da redução da qualidade dos frutos formados, os quais eram menores e mais alongados do que os frutos com sementes. A produção de néctar variou entre cultivares e entre os anos, mas sendo sempre considerados volumes pequenos (Abstract: In Brazil, the pear production is insufficient to supply the domestic demand, creating a growing market for imported fruits that can be produced in south Brazil. Due to this, Brazil's fresh pear imports grow every year. Since pears are alogamous due to gametophytic incompatibility, most European pear cultivars do not produce fruit with seeds without the presence of pollinating insects. In this context, experiments were conducted to elucidate the aspects of the reproductive biology of the Portuguese pear (Pyrus communis L. cv. Rocha) and their pollinating cultivars, as well as the quality of the hives used for orchard pollination. The results show that the phenology of cvs. Rocha and their pollinators differs between them and years, which may significantly affect pollination. The approximate date of full bloom of the cultivars was similar in 2012 (~=17/09) while differ in 2013. We observed that cv. Rocha pollinated with pollen from compatible cultivars showed a high fruit set, reaching up to 67,8% of fruit set without exogenous gibberellin application. Moreover, in these fruits was observed a greater number of seeds (> 5 seeds.fruit-1), which resulted in higher quality fruits (scores compared with other pollination treatments). Self-pollination produced some fruits (10,9% of fruit set in 2012 and 1,66% in 2013), but in lower quantity and quality when compared with cross-pollination. Natural parthenocarpy was observed in cv. Rocha, but it was unable to sustain commercially viable yields (4,16% of fruit set). The exogenous gibberellic acid application was an option for increasing fruit set by stimulating the formation of parthenocarpic fruits, however we observed a variation of it's efficiency between years (fruit set of 74,1% in 2012, decreasing to 30,0% in 2013) and showed a trend of reduced quality of formed fruits, which were smaller and more elongated than the fruit with seeds produced by cross-pollination. Nectar production varied among cultivars and years, but always being considered small volumes (<3µL) and whith low sugar content (<20ºBrix), which resulted in low attractiveness of pollinators (<1 bee.tree-1.minute-1). In the surrounding area of the orchard we observed strong competition with Mimosa scabrella and Piptocarpha angustifolia wich bear more and richer nectar. We observed poor natural pollination due to the non-pollen deposition on the stigmas of 'Rocha' after a legitimate flower visit by Apis mellifera, possibly due to lack of pollinating plants and low density of quality beehives in the orchard. The hives used for pollination showed a variation in their population between years, wich can be observed in the significant reduction in the number of combs covered with larvae and honey reserves from 2012 to 2013, resulting in lower activity of foraging bees in the period of maximum flight activity (100,8 foraging bees entering in the hive.minute-1 in 2012 and 59,3 foraging bees entering in the hive.minute-1 in 2013). We also observed the presence of Varroa destructor (infestation of 1.89 and 1.45% in 2012 and 2013, respectively) and Nosema ceranae (712.000 spores.bee-1 in 2012)
Chvalaea masneri Ale-Rocha 2006
No full textChvalaea masneri Ale-Rocha, 2006 (Figs 14, 15, 17, 42, 50, 53) Chvalaea masneri Ale-Rocha, 2006: 26, figs 27–32, 40. Type-locality: Chulumani, Apa-Apa, La Paz, Bolivia. Diagnosis. As in Ale-Rocha (2006), plus frons narrow (at mid-length narrower than width of anterior ocellus) (Fig. 14). Veins M 1 and M 4 reaching the wing margin (Fig. 50). Hind femur slightly clavate. Fore and mid tarsomeres 3– 4 and hind tarsomeres 3–5 ventrally with short, blunt, black spine-like setae. Type material examined. PARATYPES: Bolivia. La Paz, Chulumani, Apa-Apa, 16°22′S, 67°30′W, 1– 4.v.1997, 1800 m, L. Masner s.s. B-09 (7 ♂, INPA). Remarks. In the original description, a photo of the wing of C. masneri was presented (Ale-Rocha 2006, fig. 40), which highlighted the sinuosity near the apex of vein R 1 as diagnostic of the species. After re-examining the paratypes and a photo of the holotype, we noted that vein R 1 is not so sinuous near the apex and does not run closely to R 2+3 (Fig. 50) as previously described, indicating that the wing in Ale-Rocha (2006) does not belong to this species. Therefore, we provide here a new wing photograph of a male paratype. Geographical distribution. This species is known from Bolivia (La Paz) and Guatemala (Sacatepequez) (Fig. 53).Published as part of Barros, Luana Machado, Soares, Matheus Mickael Mota, Freitas-Silva, Rafael Augusto Pinheiro De & Ale-Rocha, Rosaly, 2019, Neotropical Chvalaea Papp & Földvári (Diptera: Hybotidae: Ocydromiinae): new records, an illustrated key to species and description of three new species, pp. 347-362 in Zootaxa 4571 (3) on pages 355-356, DOI: 10.11646/zootaxa.4571.3.3, http://zenodo.org/record/261270
Chvalaea boliviana Ale-Rocha 2006
No full textChvalaea boliviana Ale-Rocha, 2006 (Figs 9, 11, 39, 47, 53) Chvalaea boliviana Ale-Rocha, 2006: 22, figs 11–17, 38. Type locality: Chulumani, Apa-Apa, La Paz, Bolivia. Diagnosis. As in Ale-Rocha (2006), plus scutellum with 2–3 pairs of subequally short and slender setae (Fig. 11). Pleura pale yellow, except narrow upper margin of anepisternum darkened (Fig. 9). Wing with veins M 1 and M 4 evanescent near wing margin (Fig. 47). Hind femur slightly clavate. Fore and mid tarsomeres 3–4 and hind tarsomeres 3–5 with stout, blunt, black spine-like ventral setae. Type material examined. PARATYPE: Bolivia, La Paz, Chulumani, Apa-Apa, 16°22′S, 67°30′W, 1– 4.v.1997, 1800 m, L. Masner, B-09 (1 ♀, INPA). Geographical distribution. This species is known from Bolivia (La Paz) (Fig. 53).Published as part of Barros, Luana Machado, Soares, Matheus Mickael Mota, Freitas-Silva, Rafael Augusto Pinheiro De & Ale-Rocha, Rosaly, 2019, Neotropical Chvalaea Papp & Földvári (Diptera: Hybotidae: Ocydromiinae): new records, an illustrated key to species and description of three new species, pp. 347-362 in Zootaxa 4571 (3) on page 352, DOI: 10.11646/zootaxa.4571.3.3, http://zenodo.org/record/261270
Chvalaea catarinensis Ale-Rocha 2006
No full textChvalaea catarinensis Ale-Rocha, 2006 (Figs 4, 10, 12, 40, 48, 53) Chvalaea catarinensis Ale-Rocha, 2006: 24, figs 18–26, 39. Type locality: Nova Teutônia, Seara, Santa Catarina, Brazil. Diagnosis. As in Ale-Rocha (2006), plus scutellum with strong, long apical setae (Fig. 12). Pleura brown (Fig. 10). Wing with veins M 1 and M 4 not reaching wing margin (Fig. 48). Hind femur slightly clavate. Fore and mid tarsomeres 3–4 and hind tarsomeres 3–5 with blunt, black spine-like ventral setae. Type material examined. PARATYPES: Brasilien [Brazil, Santa Catarina, Seara], Nova Teutonia, 27°11′B 52°23′L [sic. 27°11′S 52°23′W], xi.1971, Fritz Plaumann, 300–500 m (2 ♂, MZUSP); idem, ii.1972 (1 ♂, INPA); idem, xi.1972 (2 ♂, INPA). Geographical distribution. This species is known from Brazil (Santa Catarina) (Fig. 53).Published as part of Barros, Luana Machado, Soares, Matheus Mickael Mota, Freitas-Silva, Rafael Augusto Pinheiro De & Ale-Rocha, Rosaly, 2019, Neotropical Chvalaea Papp & Földvári (Diptera: Hybotidae: Ocydromiinae): new records, an illustrated key to species and description of three new species, pp. 347-362 in Zootaxa 4571 (3) on page 352, DOI: 10.11646/zootaxa.4571.3.3, http://zenodo.org/record/261270
El Colegio de las Fronteras y los trabajadores agrícolas temporales en Canadá. Antropología. Boletín Oficial del Instituto Nacional de Antropología e Historia: Trabajadores agrícolas temporales mexicanos en Canada, 1974-2004. Num. 74 Nueva Época (2004) abril-junio
No full textBasok, T.; Tortillas and Tomatoes: Transmigrant Mexican harvesters in Canada, Montreal, McGill-Queen’s University Press, 2002.Krotz. L.; An Elegantly Simple Idea, Imperial Oil Review, Winter, 1999.Rocha, A. L.; Frontier College Report, 2003
Invenção em trânsito/transe: Glauber Rocha, Hélio Oiticica e Tropicália
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Literatura, Florianópolis, 2013.Terra em Transe, Tropicália. É já conhecida a relação criadora, propulsora entre o filme e a canção. Em retrospectivas tropicalistas, é oficial esta associação: o longa-metragem de Glauber Rocha ? a música que desencadeou o tropicalismo ? a instalação de Hélio Oiticica - a montagem do texto de Oswald de Andrade, O Rei da Vela, pelo teatro Oficina. Pretendemos aqui, além desse reconhecimento, compreender de que forma a obra cinematográfica de Glauber Rocha e a cena, o momento, o comportamento tropicalista, em alguns de seus aspectos, abrem pontos de aproximação e distanciamento, (des)encontram-se. Propomos, para isso, algumas leituras que partem primeiramente da análise de Terra em Transe, filme de 1967; seu impacto, fissura aberta em contexto, cenário cultural/estético/político, e dentro do próprio cinema do diretor; sua relação com os desdobramentos do conceito Tropicália, de Hélio Oiticica, vinculados às ideias políticas em torno da construção/arquitetura de Brasília, que desembocam na letra da composição de Caetano Veloso. Em um segundo momento do trabalho, é a análise mais detida de Deus e o Diabo na Terra do Sol (longa-metragem de Glauber, de 1964) que abre uma série de diálogos - em transe pela terra - com os processos de criação-invenção de Hélio Oiticica: os Penetráveis (marcadamente os de sua Tropicália); os Bólides (a proposição de obra aberta no Contra-Bólide N°1 Devolver a terra à Terra, e o "momento ético" no Bólide B33 Caixa 18 Homenagem a Cara de Cavalo); o Parangolé. É este que, através da dança, leva/conduz ao corpo, como elemento de desestruturação da linguagem cinematográfica, da música popular brasileira, e dos parâmetros estabelecidos do que seja arte. Nesses exercícios de aproximação e distanciamento, muitas vezes, o que entendemos por "teoria" sobressai dos escritos, críticas, pensamentos dos próprios criadores, colocados em (des)espelhamento no processo de apagamento das fronteiras entre vivência do cotidiano/criação artística, vida/obra.<br
The impact of plant-based coatings in “ROCHA” pear preservation during cold storage: a metabolomic approach
No full textAlthough new storage technologies have been emerging in recent years, preservation of pear (Pyrus communis L.) remains a challenge for suppliers. Maintenance of desired organoleptic properties throughout cold storage using non-chemical strategies has been investigated and the use of edible coatings has shown potential to delay fruit quality deterioration during cold storage. Thus, the objective of this study is to evaluate the impact of pectin coatings including plant extracts, in “Rocha” pear (Pyrus communis L. cv. Rocha) preservation. A four-month pilot scale assay was performed in both dynamic controlled atmosphere (DCA) (−0.5 °C, 0.5% O2, and 0.4% CO2) and normal atmospheric (NA) conditions (2 °C). For each storage condition, the following three coatings were tested: pectin (3% w/v) (PCT), pectin (3% w/v) + strawberry tree leaves extract (9.5 mg/mL) (CT1), and pectin (3% w/v) + apple pomace extract (16 mg/mL) (CT2). Volatile compounds, potentially related to aroma or ripening status of “Rocha” pear, were monitored alongside with conjugated trienols (CTs) and maturity parameters. The combination of DCA conditions and the application of pectin coatings were able to reduce the release of Rocha pear volatiles associated with ripening status, (particularly esters and sesquiterpenes), as well as reduce CTs, which could contribute to the preservation of Rocha pear for longer periods.info:eu-repo/semantics/publishedVersio
Getting beyond "ground zero" : an interview with Pascal Da Rocha
No full textCITATION: Botha, L. with Lumerman, P. (2015). Getting beyond “ground zero”: an interview with Pascal Da Rocha. Reflections from Practice Series No. 15 (B. Ganson, ed.). The Hague: ACCESS Facility.Pascal Da Rocha has over 18 years of experience in crisis negotiations in volatile environments. He
provides political advisory and political mediation activities for organizations such as UN, NATO, and
EU. His thematic expertise is in extractive industries, gender, national dialogue and reconciliation and
security arrangements. Pascal also provides advisory services for Fortune 500 companies in change
management strategies and intercultural communication. Pascal holds lecturing appointments at
Columbia University in New York and IESEG School of Management in Paris/Lille, France. He has
published on diversity management, political mediation and collective leadership in organizations
FIGURE 1. Vestalenula carinata n in Contribution to the knowledge of the genus Vestalenula Rossetti & Martens, 1998 (Crustacea, Ostracoda, Darwinulidae), with the description of a new species, V. carinata n. sp., from the island of Florianópolis, Brazil
No full textFIGURE 1. Vestalenula carinata n. sp., scanning electron microscopy of carapace and valve details. A. Left valve, internal view (paratype, MZUSP28272). B. Right valve, internal view (idem). C. Left valve, internal view, detail of anterior tooth (idem). D. Right valve, internal view, detail of posterior keel (idem). E. Left valve, internal view, detail of central muscle scars (idem). F. Right valve, internal view, detail of central muscle scars (idem). G. Carapace, right lateral view (paratype, MZUSP28273). H. Carapace, dorsal view (idem). I. Carapace, ventral view (idem). Scale bars: A–B, G–I = 100 µm; C–D = 50 µm; E–F = 20 µm.Published as part of Pinto, Ricardo L., Rocha, Carlos E. F., Rossetti, Giampaolo & Martens, Koen, 2013, Zootaxa 3666 (1), DOI: 10.11646/zootaxa.3666.1.6, http://zenodo.org/record/21644
Pyura vittata Rocha et al. 2005
No full textPyura vittata (Stimpson, 1852) (Figures 15–17) Pyura vittata: Van Name, 1945 (part): 321, fig 213 (upper figures); Monniot C., 1983: 1024, fig. 2, and synonymy; Monniot F., 2018: 423, fig 21–23; not Monniot F., 2016: 237, fig. 29 (= P. beta). Material Examined: DZUP PYU-76, Isla Pastores, Bocas del Toro, 9°14'N 82°20'W, leg. R. M. Rocha, 10.08.2003; DZUP PYU-77, Isla Pastores, Bocas del Toro, 9°14'N, 82°20'W, leg. R. M. Rocha, 10.08.2003; DZUP PYU-78, Solarte, Bocas del Toro, 9°17'30”N 82°10'20”W, leg. R. M. Rocha, 11.08.2003; DZUP PYU-79, Isla Pastores, Bocas del Toro, 9°14'N, 82°20'W, leg. R. M. Rocha, 10.08.2003; DZUP PYU-80, Crawl Key, Bastimentos, Bocas del Toro, 9°15’2.6”N 82°07’38”W, leg. R. M. Rocha, 03.08.2003; DZUP PYU-81, Isla Pastores, Bocas del Toro, 9°14'N 82°20'W, leg. R. M. Rocha, 10.08.2003; DZUP PYU-82, STRI Point, Isla Colon, Bocas del Toro, 9°21’08”N, 82°15'35.2”W, leg. R. M. Rocha, 10.08.2003; DZUP PYU-83, Isla Pastores, Bocas del Toro, 9°14'N, 82°20'W, leg. R. M. Rocha, 10.08.2003; DZUP PYU-106, Solarte, Bocas del Toro, 9°16'38.9”N 82°12'24.1”W, leg. R. M. Rocha, 19.06.2014; DZUP PYU-136, Isla Pastores, Bocas del Toro, 9°14'19.92”N 82°19'58.08”W, leg. R. M. Rocha, 17.08.2006; DZUP PYU-148, 8 individuals, Punta Galeta, Colon 9°24'15”N 79°51'49”W, leg. R. M. Rocha, 06.01.2009; DZUP PYU-149, Isla Pastores, Bocas del Toro, 9°14'19.92”N 82°19'58.08”W, leg. R. M. Rocha, 17.08.2006; DZUP PYU-165, Isla Pastores, Bocas del Toro, 9°14'19.92”N 82°19'58.08”W, leg. R. M. Rocha, 15.08.2006. Description. Animals can reach 5.5 cm at the longest length. The tunic is leathery and rough with numerous organisms encrusting the brown or light brown surface (Fig. 15). The tunic is white inside and has a yellowish soft membrane. In the field, the siphons show four small triangular lobes, the oral siphon is usually apical and the atrial more lateral. There are long spines (~160 µm) lining both siphons with a very distinctive shape: narrow with a round enlargement in the middle and at the posterior extremity (Fig. 16C, D). Iridescent spots of blue, green or yellow color caused by the reflection of light by the enlarged areas of the spines are seen against a brown or reddish background (Fig. 15). After long fixation, the tunic turns light brown. Often, a tinge of red can still be seen around the siphons. The body wall has many longitudinal muscles radiating from the siphons; they form thin bands that cross each other making a musculature net. Circular muscles densely surround both siphons. The U-shaped right gonad and the enlarged secondary loop of the alimentary canal on the left side are visible through the transparent body wall (Fig. 16A, B). The tentacles project at the level of a strong muscular sphincter, the number ranging between 16–29. They are flat, very wide at the base and ramifying two or three times, with primary ramifications projecting along the posterior margin (Fig. 16E, F). The third order ramifications are minute and only appear in the largest tentacles that can reach 7 mm in length. The peritubercle region forms a deep V with the dorsal tubercle has U- or C-shaped aperture with enrolled ends. The dorsal lamina is divided in numerous thin and long densely packed languets. The pharynx has six folds per side and is orange when fresh (Fig. 16G), but quickly loses coloration after fixation. The number of longitudinal vessels range from 305 to 410. Longitudinal vessels fray toward the base of the animal, making languets around the esophageal opening. Parastigmatic vessels are present. Endocarps are present along the intestine, especially along the descending limb (Fig. 17B). Both gonads have large endocarps on each lobe, particularly the distal ones (Fig. 17C). Identification Key This tabular key includes all of the Pyura spp. that are known from the shallow waters on the Pacific and Atlantic sides of Panama. The table is based on observed and literature characteristics. 1. Distribution: A. Atlantic; P. Pacific 2. Maximum length of specimen including tunic 3. Color in living specimen (tunic or siphons): B. Brown; Dr. Dark Red; O. Orange; P. Pink; Pu. Purple; R. Red; Y. Yellow; W. Wine color 4. Color inside of the tunic: B. Brown; O. Orange; R. Red; W. White; Y. Yellow 5. Presence of spinules: P. present; A. absent 6. Maximum length of spinules (Μm) 7. Position of the siphons: C. Close to each other; D. Distant from each other (opposite sides); I. Intermediate distance (atrial siphon in half the distance between oral and posterior region) 8. Total number of longitudinal vessels 9. Number of oral tentacles 10. Degree of tentacle ramification: F. First order; S. Second order; T. Third order 11. Number of gonad lobes on the right side 12. Number of gonad lobes on the left side 13. Margin of the anus: L. Lobed; S. Smooth 14. Presence of endocarps: B. Body wall; G. Gonads; I. Intestine 15. Peculiar characteristics: E. numerous endocarps on the body wall; F. Enlarged siphon vellum forming a flap in atrial siphon; I. Enlarged intestinal pouch; T. Extremely thick tunic; V. Ventral right gonad. 1 character variation includes information in Monniot (1994), 2 character variation includes information in Monniot (1983) and Monniot (2018); 3 character variation includes information in Tokioka (1972) The alimentary canal occupies 2/3 of the left side. The primary loop does not reach the peripharyngeal groove, forms a close curve with a vertical descending limb that forms another close second loop with the ascending rectum (Fig. 17A). The intestine is not isodiametric; the secondary loop and rectum are enlarged. The anus is lobed. The digestive gland is dark green and forms lobes connected by long tubes as in a cauliflower. It has two main connections to the stomach. On the left side, the gonad completely fill the space within the primary intestinal loop, the number of gonad lobes ranging from 30–47. The right side of the animal is occupied by a large characteristic Ushaped gonad with 26 to 42 gonadal lobes. The gonoducts are long, the oviduct slightly longer than the sperm duct, both opening at the level of the anus. Remarks. This is one of the most common species both in mangrove and reefs around Bocas del Toro province (Rocha et al. 2005) and also found in Colon region but it has not been found on a survey of the Pacific coast (Carman et al. 2011). The specimens from Panama agree well with the description of P. vittata from Guadeloupe and Martinique (Monniot, C. 1983; Monniot, F. 2018). We believe that P. vittata reported by F. Monniot (2016) from French Guiana is actually P. beta Skinner, Rocha & Counts, 2019.Published as part of Rocha, Rosana M. & Counts, Bailey Keegan, 2019, Pyura (Tunicata: Ascidiacea: Pyuridae) on the coasts of Panama, pp. 491-513 in Zootaxa 4564 (2) on pages 509-512, DOI: 10.11646/zootaxa.4564.2.9, http://zenodo.org/record/258940
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