Florida State College Jacksonville (FSCJ) South Campus |
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As part of an on-going
project to formally document the presence of
Pomacea paludosa (Say, 1829)
[Florida
Applesnail] in northeast Florida, this reporter conducted a visit to a
medium sized lake on the property of the Florida State College
Jacksonville (FSCJ) South Campus in southeastern Duval County at 11901
Beach Boulevard on January 21, 2006.
Upon arrival at the lake, what
tenuously appeared to be an old Pomacea paludosa egg clutch was
discovered on a concrete drainage pipe near the campus administrative
building. This prompted a more thorough investigation of the lake
shoreline which included circumnavigating the entire lake. During this
trek, hundreds of dead Pomacea shells were
seen on both the lake bottom and bank as well as a limited number of egg
clutches. Ultimately, a limited number of live specimens were found in
the south end of the lake closest to Beach Boulevard. The unusually
large number of dead shells (both freshly deceased and obviously much
older) indicate that the species has been present in the lake for many
years and the lake has a large breeding Pomacea population. One unusual aspect of the lake was the presence of a large number of small leeches which were found clinging to the shells of both live and dead specimens. One such live Pomacea found during a February 3, 2006 visit had nearly a dozen leeches on the ventral surface to include the operculum . This is the first time that this reporter has found leeches in such large numbers and also attached to a Pomacea paludosa shell. It's also worth noting that the Pomacea specimens from this lake show considerable variation in shell shape as compared to those from other impoundments in Duval County - specifically in regards to the height of the spire [see image]. Also an unusual freak specimen was found [see image]. Other aquatic species seen in the lake included: Planorbella duryi (Wetherby, 1879) Seminole Rams-horn, Physella heterostropha (Say, 1817) Pewter Physa, Elliptio jayensis (I. Lea, 1838) Florida Spike, Utterbackia imbecillis (Say, 1829) Paper Pondshell, and Melanoides tuberculata (Müller, 1774) Red-rim Melania - the latter two being exotic species. |
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Southern End Of The Lake Looking North |
Southwestern End Of The Lake Looking Northeast |
Pomacea paludosa At The Lake In Search Of food |
Pomacea paludosa At The Lake Mating |