Ocorrência de Achatina fulica no Vale do Paraíba, Estado do Rio de Janeiro, Brasil

Vasconcellos, Maurício Carvalho de; Pilé, Edwin

doi:10.1590/s0034-89102001000600013

Cited by 31 publications

(23 citation statements)

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“…However, locally, this snail has a great potential to extend its distribution beyond the colonized area (Frankiel, 1989;Schotmamm, 1990). This pattern has also been observed in Rio de Janeiro (Brazil), around residential houses (Vasconcelos and Pile, 2001). In general, there is a tendency for this species to thrive in the presence of man, especially in urban sites (Barquet, 1950;Wolfenbarger, 1971;Takeuchi et al, 1991) and farms (Ahmed and Raut, 1991).…”

Section: Discussionsupporting

confidence: 68%

Distribution, feeding behavior and control strategies of the exotic land snail Achatina fulica (Gastropoda: Pulmonata) in the northeast of Brazil

2008

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The goal of this study was to document the distribution and establishment A. fulica such as their feeding preference and behavior in situ. The study was carried out at the city of Lauro de Freitas, Bahia state, Brazil, between November 2001 and November 2002. We used catch per unit effort methods to determine abundance, distribution, habitat choice and food preferences. The abundance and distribution of A. fulica was most representative in urban area, mainly near to the coastline. Lots and house gardens were the most preferred sites during active hours. The results indicated that A. fulica started their activity at the end of the evening and stopped in mid-morning.

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Section: Discussionsupporting

confidence: 68%

Distribution, feeding behavior and control strategies of the exotic land snail Achatina fulica (Gastropoda: Pulmonata) in the northeast of Brazil

2008

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“…O fato da presente pesquisa não evidenciar a existência de impactos econômicos no Paraná pode ser devido à predominân-cia da espécie invasora na área urbana (FISCHER & COLLEY 2004, SIMIÃO & FISCHER 2004, causando principalmente danos em jardins e hortas. No entanto, A. fulica é reconhecida mundialmente como uma praga agrícola voraz, causando sérios prejuízos principalmente sobre culturas tropicais (PAIVA 2001, VASCONCELLOS & PILE 2001, RAUT & BARKER 2002, TELES et al 2004, consumindo diariamente em torno de 10% do peso do seu corpo (RAUT & BARKER 2002). Todavia, MEAD (1979) afirma que A. fulica causa apenas danos locais sobre algumas espécies de vegetais e plantas ornamentais e considera que a comunidade cientí-fica e a mídia têm exagerado na divulgação do caramujo como praga.…”

Section: Discussionunclassified

Avaliação dos problemas enfrentados no manejo do caramujo gigante africano Achatina fulica (Gastropoda: Pulmonata) no Brasil

Colley¹,

Fischer²

2009

Zoologia (Curitiba, Impr.)

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ABSTRACT. Evaluation of the problems faced in the management of the giant African snail Achatina fulica (Gastropoda: Pulmonata) in Brazil. The giant African snail Achatina fulica Bowdich, 1822 was introduced into Paraná, Brazil, in the 1980s. Since then, it has spread across the country, despite its known invasive status on a global scale. The main objective of this study was to assess the problems faced in the management of the giant African snail. To accomplish that, we gathered and analyzed information available on the internet, scientific databases, field studies, as well as interviews and consultations with official agencies, NGOs, museums, the scientific community and people that coexist with the species.Despite the fact that extensive information has been generated regarding A. fulica (1,340 articles, 65 summaries in national annals, 40,700 pages on the internet), essential to promote control measures to hinder the propagation of this species, the majority of the available information remains inaccessible to the world at large. Moreover, the environmental, economic and health impacts of this species remain unclear, which may contribute to discouraging the initiation of management actions. Finally, control measures are still inefficient due to the generalist profile of this species and the lack of knowledge concerning its biology and ecology. Thus, in conclusion, even though A. fulica has been an invasive species for over a century in many other countries, it is difficult to find evidence supporting the need to subsidize its management. This may be an indication that many other, poorly known exotic species will have time and the proper conditions to become established and cause problems before they come to be recognized as invasive.

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“…Known as giant African snail, the land pulmonate mollusc Achatina fulica Bowdich, 1822, reaches considerable dimensions, nearly 20 cm shell length and weigh up 200 g (Teles et al 1997, Vasconcellos & Pile 2001, but in Brazil the maximum average records vary in about 11 cm and little over 100 g (Vasconcellos & Pile 2001, Carvalho et al 2003, Simião & Fischer 2004, Fischer & Colley 2005, Fischer et al 2006). …”

Section: Introductionmentioning

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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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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Ocorrência de Achatina fulica no Vale do Paraíba, Estado do Rio de Janeiro, Brasil

Cited by 31 publications

References 3 publications

Distribution, feeding behavior and control strategies of the exotic land snail Achatina fulica (Gastropoda: Pulmonata) in the northeast of Brazil

Distribution, feeding behavior and control strategies of the exotic land snail Achatina fulica (Gastropoda: Pulmonata) in the northeast of Brazil

Avaliação dos problemas enfrentados no manejo do caramujo gigante africano Achatina fulica (Gastropoda: Pulmonata) no Brasil

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

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