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Effect of Climate Change on Invasion Risk of Giant African Snail (Achatina fulica Férussac, 1821: Achatinidae) in India.

Sarma RR, Munsi M, Ananthram AN - PLoS ONE (2015)

Bottom Line: The Giant African Snail (Achatina fulica) is considered to be one the world's 100 worst invasive alien species.These regions include parts of Bihar, Southern Karnataka, parts of Gujarat and Assam.The Central Indian region is at low risk due to high temperature and low rainfall.

View Article: PubMed Central - PubMed

Affiliation: Suri Sehgal Center for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment (ATREE), Royal Enclave, Srirampura, Jakkur PO, Bangalore, 560064, India.

ABSTRACT
The Giant African Snail (Achatina fulica) is considered to be one the world's 100 worst invasive alien species. The snail has an impact on native biodiversity, and on agricultural and horticultural crops. In India, it is known to feed on more than fifty species of native plants and agricultural crops and also outcompetes the native snails. It was introduced into India in 1847 and since then it has spread all across the country. In this paper, we use ecological niche modeling (ENM) to assess the distribution pattern of Giant African Snail (GAS) under different climate change scenarios. The niche modeling results indicate that under the current climate scenario, Eastern India, peninsular India and the Andaman and Nicobar Islands are at high risk of invasion. The three different future climate scenarios show that there is no significant change in the geographical distribution of invasion prone areas. However, certain currently invaded areas will be more prone to invasion in the future. These regions include parts of Bihar, Southern Karnataka, parts of Gujarat and Assam. The Andaman and Nicobar and Lakshadweep Islands are highly vulnerable to invasion under changed climate. The Central Indian region is at low risk due to high temperature and low rainfall. An understanding of the invasion pattern can help in better management of this invasive species and also in formulating policies for its control.

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Percent number of records of A.fulica invasion along the altitudinal gradient.
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pone.0143724.g004: Percent number of records of A.fulica invasion along the altitudinal gradient.

Mentions: Among different climatic factors, average minimum monthly temperature (°C) (r = 0.672, P<0.05, df = 10;Fig 3a) and average monthly rainfall (mm) (r = 0.820, P<0.01, df = 10;Fig 3b) are significantly correlated with occurrence of A. fulica in India (Table 6). Most records of A. fulica were from altitudes ranging from 1-100m asl (62.45%; Fig 4). There were few records from above 1000m asl.


Effect of Climate Change on Invasion Risk of Giant African Snail (Achatina fulica Férussac, 1821: Achatinidae) in India.

Sarma RR, Munsi M, Ananthram AN - PLoS ONE (2015)

Percent number of records of A.fulica invasion along the altitudinal gradient.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4664396&req=5

pone.0143724.g004: Percent number of records of A.fulica invasion along the altitudinal gradient.
Mentions: Among different climatic factors, average minimum monthly temperature (°C) (r = 0.672, P<0.05, df = 10;Fig 3a) and average monthly rainfall (mm) (r = 0.820, P<0.01, df = 10;Fig 3b) are significantly correlated with occurrence of A. fulica in India (Table 6). Most records of A. fulica were from altitudes ranging from 1-100m asl (62.45%; Fig 4). There were few records from above 1000m asl.

Bottom Line: The Giant African Snail (Achatina fulica) is considered to be one the world's 100 worst invasive alien species.These regions include parts of Bihar, Southern Karnataka, parts of Gujarat and Assam.The Central Indian region is at low risk due to high temperature and low rainfall.

View Article: PubMed Central - PubMed

Affiliation: Suri Sehgal Center for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment (ATREE), Royal Enclave, Srirampura, Jakkur PO, Bangalore, 560064, India.

ABSTRACT
The Giant African Snail (Achatina fulica) is considered to be one the world's 100 worst invasive alien species. The snail has an impact on native biodiversity, and on agricultural and horticultural crops. In India, it is known to feed on more than fifty species of native plants and agricultural crops and also outcompetes the native snails. It was introduced into India in 1847 and since then it has spread all across the country. In this paper, we use ecological niche modeling (ENM) to assess the distribution pattern of Giant African Snail (GAS) under different climate change scenarios. The niche modeling results indicate that under the current climate scenario, Eastern India, peninsular India and the Andaman and Nicobar Islands are at high risk of invasion. The three different future climate scenarios show that there is no significant change in the geographical distribution of invasion prone areas. However, certain currently invaded areas will be more prone to invasion in the future. These regions include parts of Bihar, Southern Karnataka, parts of Gujarat and Assam. The Andaman and Nicobar and Lakshadweep Islands are highly vulnerable to invasion under changed climate. The Central Indian region is at low risk due to high temperature and low rainfall. An understanding of the invasion pattern can help in better management of this invasive species and also in formulating policies for its control.

Show MeSH
Related in: MedlinePlus