P1060410
Photo © Matt Muir, some rights reserved
Ocean's Beach, San Diego's "Mile of Birds" (Google, OSM)
32.7550967273, -117.2447990812
Accuracy: 50m
open

Description

Snail everywhere on edge of bike path.

May. 24, 2012 14:48:31 -0400
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Comments & Identifications

1000-thumb
White Italian Snail - Photo (c) Valter Jacinto | Portugal, some rights reserved (CC BY-NC-SA)
muir's ID: White Italian Snail (Theba pisana)
Posted by muir over 2 years ago (Flag)
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Hundreds, maybe thousands, of snails seen along bike path, attached high on vegetation. Also seen in other parts of San Diego. According to this U of Florida site, "The white garden snail, Theba pisana (Müller), is the worst potential agricultural pest of the helicid snails introduced to North America....This snail was first noticed in North America in La Jolla, San Diego County, California, in 1914 (Chace 1915, Basinger 1923). It is established only in San Diego County, but has been reported both Los Angeles and Orange counties (Flint 2011). Mead (1971) reported an infestation in Los Angeles County in 1966 which was declared eradicated in 1972 (William A. Edwards, personal communication). The snails were found and identified in August 1985, in San Diego, California, at several localities in about a 10 square mile area. Hanna (1966) stated that T. pisana has been introduced into several eastern localities in the United States. However, there are no published records for North American populations outside of California."

Posted by muir over 2 years ago (Flag)
2991-thumb
Posted by sea-kangaroo about 2 years ago (Flag)
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Identification Summary

White Italian Snail - Photo (c) Valter Jacinto | Portugal, some rights reserved (CC BY-NC-SA)
muir's ID: White Italian Snail (Theba pisana)
White Italian Snail - Photo (c) Valter Jacinto | Portugal, some rights reserved (CC BY-NC-SA)
Community ID: White Italian Snail (Theba pisana)
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sea-kangaroo 1 person agrees

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Data Quality Assessment

Community-supported ID? Yes
1 person agrees
0 people disagree
Date? Yes
Georeferenced? Yes
Photos or sounds? Yes
Is the organism wild/naturalized? Unknown
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Does the location seem accurate? Unknown
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Does the date seem accurate? Unknown
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Observation © Matt Muir
Cc-by-nc_small some rights reserved

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