Estudo comparativo do aparelho reprodutor do molusco Achatina fulica criado em cativeiro e asselvajado

Caetano, Flavia Aparecida Macedo

doi:10.11606/d.10.2005.tde-20092006-155805

Cited by 5 publications

(7 citation statements)

References 2 publications

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“…Comparing to the data obtained by Caetano (2005) and Ohbayashi & Takeuchi (2007), the weight and height average shell were lower than those obtained by this, as compared to Albuquerque (2003) the average obtained were higher. The specimen large and strong presence, probably with sexual development complete reflects the process of invasion of the species in Salvador, with the occupation of urban ecosystems, not only causing serious ecological and economical problems, but also possible damages to human and domestic animals health (Teles et al 1997, Vasconcellos & Pile 2001, Raut & Barker 2002, Bender et al 2003, Thiengo et al 2006, Thiengo et al 2007, Thiengo et al 2008.…”

Section: Aspects Of Population Dynamics Of Achatina Fulicacontrasting

confidence: 77%

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Population dynamics and reproductive biology ofAchatina fulica Bowdich, 1822 (Mollusca, Gastropoda) in Salvador - Bahia

Silva

Omena

2014

Biota Neotrop.

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Abstract:The risks following introduction of invasive species are enormous and incalculable. Achatina fulica is considered one of the 100 species of greatest invasive potential, stands out among the land pulmonate snails, mostly for its high reproductive potential that accelerates the process of dispersion, increasing the damages related to health (disease transmission), to economy (crops destruction) and to environment (biodiversity loss). In order to investigate the relationship of the African snail with the environment, trying to relate sexual activity with climatic variables (temperature, rainfall and humidity), a study was conducted on aspects of population dynamics and reproductive biology in Salvador city. The snails were collected by hand, monthly. Morphometric data were obtained in the field and dissections to analyze the reproductive system at laboratory. To test if there was a greater sexual activity in wet periods was performed first a Principal Component Analysis (PCA) with climatic variables, followed by a regression between precipitation (the most influential environmental variable) and the variable of interest (sexual activity). The results showed that there is an apparent annual cycle for A. fulica, with a recruitment period covering the end of rainy season and the dry season (August to December 2006 and February 2007). Increase of shell size (height) and of sexual activity were observed during the rainy season, although snails were found in full sexual activity during the whole period of study. The von Bertalanffy curve showed that the oldest specimen collected would have three years and eleven months. The regression between precipitation and sexual activity was significant (P = 0.002) showing that the higher rainfall increased sexual activity. In addition, it was observed that there is an increase in the thickness of peristome as the specimens reaches sexual maturity however this relationship isn't precise (it were found individuals with sexual structures not consistent with the reproductive stage given by the thickness of peristome) and should be set for each region studied. As the eradication becomes impossible because of high level of invasion found in Salvador, it is recommended to control the population of African snails by continuously removing specimens, especially in the rainy periods. Keywords: bioinvasion, invasive species, reproductive cycle, growth, giant African snail.SILVA, E.C., OMENA, E.P. Dinâmica populacional e biologia reprodutiva de Achatina fulica Bowdich, 1822 (Mollusca, Gastropoda) na cidade de Salvador -Bahia.http://dx. doi.org/10.1590/1676-0603000414Resumo: Os riscos com a introduçã o de espécies invasoras sã o enormes e incalculá veis. Constando como uma das 100 espécies de maior potencial invasor, Achatina fulica se destaca dos demais gastrópodes pulmonados terrestres, principalmente, pelo seu elevado potencial reprodutivo que acelera o processo de dispersão, aumentando os danos relacionados à saúde (transmissão de doenças), à economia (destruição de cultivos) e ao ...

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Section: Aspects Of Population Dynamics Of Achatina Fulicacontrasting

confidence: 77%

“…The structures of reproductive system were observed following the illustrations and descriptions by Tomiyama (1993Tomiyama ( , 2002, Caetano (2005), Fisher & Colley (2005) and Teixeira et al (2008), to A. fulica.…”

Section: Laboratorial Analysismentioning

confidence: 99%

Population dynamics and reproductive biology ofAchatina fulica Bowdich, 1822 (Mollusca, Gastropoda) in Salvador - Bahia

Silva

Omena

2014

Biota Neotrop.

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“…Segundo Demétrio (1985), essa discordância se justifica porque no caso multivariado o critério de rejeição de H 0é mais rigoroso por levar em consideração um nível de significância con- No geral, as médias das variáveis por grupos foram maiores em LAB, com exceção da variável razão corporal. Segundo Caetano (2005), os maiores valores para peso, largura e comprimento já eram esperados para os animais criados em cativeiro (LAB), uma vez que a prática de criação destes animais obedece a um rigor técnico de criação, norteado pela pesquisa gerada no próprio setor. Acrescenta-se o fato de que estes animais não necessitam de muito esforço para se alimentarem e não sofrem os efeitos das mudanças climáticas bruscas, como ocorre com os animais asselvajados.…”

Section: Resultados E Discussão -Experimento IIunclassified

“…Os dados utilizados nesta seção, foram obtidos da dissertação de Caetano (2005). Os dados foram submetidosà MANOVA, com o intuito de comparar os quatro tratamentos simultaneamente para todas as variáveis e confrontar os seus resultados com os obtidos por Caetano (2005). As estatísticas descritivas dos dados se encontram no Apêndice C.…”

Section: Materials E Métodos -Experimento IIunclassified

Aplicações de técnicas de análise multivariada em experimentos agropecuários usando o software R

Sartorio¹

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Application of multivariate analysis in agricultural experiments using R software The use of the techniques of multivariate analysis is restricted to large centers of research, the higher companies and the academic environment. These techniques are very interesting because of the use of all answers variables simultaneously in theoretical interpretation of the data set, considering the correlations between them. One of the main obstacle to the usage of these techniques is that researchers interested in the quantitative research do not know them. The other difficulty is that most of the software that allow this type of analysis (SAS, MINITAB, BMDP, STATISTICA, S-PLUS, SYSTAT etc.) are not in public domain. Publishing the use of Multivariate techniques can improve the quality of the research, decrease the time spend and the cost, and make easy the interpretation of the structures of the data without cause damage of the information. In this report, were confirmed some advantages of the multivariate techniques in a univariate analysis for data of agricultural experiments. The analysis were taken with R software, a open software, "friendly" and free, with many statistical resources available.

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“…Fisher (1948) já sugeriu que o muco é ativamente anti séptico e inócuo e para avaliar como substâncias antimicrobianas podem auxiliar no tratamento de feridas de origem diversas, Martins, et al (1996) , 1998) Como já relatado anteriormente em pesquisas realizadas por Lorenzi, et.al. (2006);Sírio, et al (2005);Caetano, et al (2005) há muitos indícios demonstrando que o muco de escargots contem propriedades relacionadas ao processo de cicatrização o que confirma a possibilidade de utilizá-lo como agente zooterápico.…”

Section: Análise Citotóxica Do Muco De Escargot Achatina Fulicaunclassified

O Achatina fulica e sua utilização zooterápica através de dietas acrescidas de própolis

Silva¹

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Estudo comparativo do aparelho reprodutor do molusco Achatina fulica criado em cativeiro e asselvajado

Abstract: RESUMO CAETANO, F. A. M. Estudo comparativo do aparelho reprodutor do molusco Achatina fulica criado em cativeiro e asselvajado. [Comparative study on the reproductive system in mollusk Achatina fulica raised in captivity and in the wild]. 2005. 61 f. Dissertação (Mestrado em

Cited by 5 publications

References 2 publications

Population dynamics and reproductive biology ofAchatina fulica Bowdich, 1822 (Mollusca, Gastropoda) in Salvador - Bahia

Population dynamics and reproductive biology ofAchatina fulica Bowdich, 1822 (Mollusca, Gastropoda) in Salvador - Bahia

Aplicações de técnicas de análise multivariada em experimentos agropecuários usando o software R

O Achatina fulica e sua utilização zooterápica através de dietas acrescidas de própolis

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