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Previous issue date: 2007-02-16 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Snails are invertebrate of great importance for the human and veterinary medicine,
therefore they serve as intermediate host of some parasites, being able to acometer animal
or human people. The snail Achatina Fulica is an intermediate host of nematodes like
Angiostrongylus spp. These snails had been introduced in Brazil as an attempt to substitute
traditional escargot, however the great creations had not provided the waited profit and the
criation had been abandoned. The Euphorbia splendens var. hislopii is an originary plant of
the African continent and is largely used as ornamental plant. This plant, however, is
classified as toxic by the SINITOX Sistema Nacional de Informa??es T?xico-
Farmacol?gicas. So the present study intended to evaluate the consequences of the use of
the latex of Euphorbia splendens var hislopii on the metabolism of carbohydrates of
Achatina fulica. For the determination of the subletal Dose groups with thirty animals had
been displayed to the latex in the concentrations of 1%, 2,5%, 5%, 7,5%, 12,5%, 15%,
20%, 25%, 50%, 75% and 100%, being Concentration Dose 50 (CL50) 11,2%. The values
observed for the concentration of glycogen in the digestive gland and the cefalopodal mass
had demonstrated that the exposition after had extremely significant difference only in the
first day after displayed. The analysis of polynomial regression demonstrated to have one
strong positive relation (r2=0,95) enters the glycogen concentration in the cefalopodal mass
of snail displayed to the CL50 and snails of control group after to long of the time the
exposition to the latex. When comparing the glucose levels in hemolinfa of displayed snails
to CL50 and snails of control group in function of the time after the exposition in days, the
polynomial regression evidenced that these levels increase as the continuation of the days.
The exposition of the A. fulica to the CL50 of the latex of Euphorbia splendens var. hislopii
make a reduction in the deposits of glycogen in digestive gland of the clam, presented in a
delayed effect on the deposits of glycogen of the cefalopodal mass of the snails, did not
have significant variations in the glucose content in hemolinfa of A. fulica displayed to the
latex. Although in the first dissection day has been found a bigger concentration of free
glucose level in hemolinfa. The exposition to the latex of E. splendens var. hislopii make a
significant reduction in the concentration of galactogen in albumen gland of the snail. / Os moluscos s?o invertebrados de grande import?ncia para a medicina humana e
veterin?ria, pois servem como hospedeiros intermedi?rios de v?rios parasitos, podem
acometer animais ou o homem. O molusco Achatina fulica em especial, ? hospedeiro
intermedi?rio de nemat?ides do g?nero Angiostrongylus spp. Estes moluscos,foram
introduzidos no Brasil como uma tentativa de substituir o tradicional escargot, por?m as
grandes cria??es n?o proporcionaram o lucro esperado e os criadouros foram abandonados.
A Euphorbia splendens var. hislopii ? uma planta origin?ria do continente africano e ?
muito utilizada como planta ornamental, devido ao seu f?cil cultivo. Esta planta, por?m, ?
classificada como t?xica pelo SINITOX Sistema Nacional de Informa??es T?xico-
Farmacol?gicas. Assim sendo, o presente estudo pretendeu avaliar as conseq??ncias do uso
do l?tex de Euphorbia splendens var hislopii sobre o metabolismo de carboidratos de
Achatina fulica. Para a determina??o da dose subletal grupos com trinta animais foram
expostos ao l?tex nas concentra??es de 1%, 2.5%, 5%, 7.5%, 12.5%, 15%, 20%, 25%, 50%,
75% e 100%, sendo a concentra??o letal 50 (CL50) 11,2% . Os valores observados para a
concentra??o de glicog?nio na gl?ndula digestiva e na massa cefalopodal demonstraram
que houve diferen?a significativa apenas no primeiro dia ap?s a exposi??o a CL50. A an?lise
de regress?o polinomial demonstrou haver uma forte rela??o positiva (r2=0,95) entre a
concentra??o de glicog?nio na massa cefalopodal de moluscos expostos a CL50 e moluscos
do grupo controle ao longo do tempo ap?s a exposi??o ao l?tex. Ao comparar os n?veis de
glicose na hemolinfa de moluscos expostos a CL50 e de moluscos controles em fun??o do
tempo ap?s a exposi??o em dias, a regress?o polinomial evidenciou que esses n?veis
aumentam conforme o prosseguimento dos dias. A exposi??o de A. fulica ? CL50 do l?tex de
E. splendens var. hislopii provocou a redu??o nos dep?sitos de glicog?nio na gl?ndula
digestiva, e um efeito tardio sobre os dep?sitos de glicog?nio da massa cefalopodal, e n?o
apresentou varia??es significativas no conte?do de glicose na hemolinfa de A. fulica
exposta ao l?tex. Embora nos primeiros dias de disseca??o tenha sido encontrado um maior
n?vel de glicose livre circulante na hemolinfa. A exposi??o ao l?tex de E. splendens var.
hislopii provocou uma significativa redu??o na concentra??o de galactog?nio na gl?ndula
de alb?men de A. fulica.
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:tede/756 |
| Date | 16 February 2007 |
| Creators | Oliveira, Camila Silva de |
| Contributors | Silva, Jairo Pinheiro da, Vasconcellos, Mauricio Carvalho de |
| Publisher | Universidade Federal Rural do Rio de Janeiro, Curso de P?s-Gradua??o em Ci?ncias Veterin?rias, UFRRJ, Brasil, Parasitologia Veterin?ria |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ |
| Rights | info:eu-repo/semantics/openAccess |
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