Interactions between translocated and native queen conch Strombus gigas: evaluating a restoration strategy
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Published source details
Delgado G. & Glazer R. (2007) Interactions between translocated and native queen conch Strombus gigas: evaluating a restoration strategy. Endangered Species Research, 3, 259-266.
Published source details Delgado G. & Glazer R. (2007) Interactions between translocated and native queen conch Strombus gigas: evaluating a restoration strategy. Endangered Species Research, 3, 259-266.
Actions
This study is summarised as evidence for the following.
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Translocate species - Translocate molluscs Action Link |
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Translocate species - Translocate molluscs
A replicated study in 2001 of two sites of seagrass, coral rubbles, and sandy seabed in the Florida Keys, between the North Atlantic Ocean and the Gulf of Mexico, USA (Delgado & Glazer 2007) found that non-reproductive adult queen conch Strombus gigas translocated to aggregations of reproductive conch typically displayed similar behaviour to non-translocated resident conch, but effects varied with sites. At Looe Key, there were no differences between translocated and resident conch in total distances travelled (translocated: 203 vs resident: 270 m), movement rates (1.2 vs 1.1 m/day), migration patterns (reported as an index), home-range sizes (13,900 vs 13,200 m2), and conch-conch interactions (reported as a sociability coefficient). At Easter Sambo, there were no differences between translocated and resident conch in total distances travelled (186 vs 144 m), movement rates (1.2 vs 0.8 m/day), and migration patterns, but translocated conch had larger home-range sizes (30,300 m2) than resident conch (3,700 m2) and interacted more with other translocated conch than with resident conch. Authors suggested that differences in conch behaviour were associated with differences in habitats between sites. In 2001, non-reproductive adult queen conch were translocated from a near-shore site to two offshore sites in an enforced protected area with aggregations of reproductive adult queen conch (Eastern Sambo: 132 conch; Looe Key: 255 conch). Conch were tagged with acoustic transmitters and their movements followed bimonthly for 10 months (Eastern Sambo: six translocated, six resident; Looe Key: five translocated, five resident).
(Summarised by: Anaëlle Lemasson)
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