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2012. Review of Significant Trade - Cites

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Tridacna spp.<br />

Province, densities <strong>of</strong> 0-17 individuals per ha were recorded by Ramohia et al. (2005a).<br />

Ramohia (2004) reported a mean density <strong>of</strong> less than one individual per hectare in transect<br />

surveys conducted in 2004 in the Marapa and Simeruka MPAs in Marau Sound,<br />

Central Province.<br />

Threats: Subsistence harvesting was considered to be the main threat to the species<br />

(IUCN, 2006b, Teitelbaum and Friedman, 2008b); it was also reported to be marketed in<br />

aquarium trade (Mingoa-Licuanan and Gomez, 2002) and have a high demand in the<br />

adductor muscle market (Shang et al., 1991).<br />

Tridacna spp. were reported to be frequently used for subsistence purposes in the Solomon<br />

Islands (Horokou et al., 2010), although Hviding (1993) noted that it was the species <strong>of</strong><br />

Tridacna <strong>of</strong> least importance in subsistence harvesting.<br />

<strong>Trade</strong>: As the Solomon Islands has not yet submitted a CITES annual report, trade figures<br />

are based on data submitted by importers. According to data in the CITES <strong>Trade</strong> Database,<br />

direct trade in T. derasa from the Solomon Islands reported by importers in the period 2000-<br />

2010 principally comprised live specimens (Table 2). In total, 35 693 live specimens and<br />

181 kg <strong>of</strong> live specimens were imported, <strong>of</strong> which the majority were wild-sourced<br />

(68 per cent <strong>of</strong> live individuals and 100 per cent <strong>of</strong> live recorded by weight). The remaining<br />

live specimens were captive-bred (24 per cent) and to a lesser extent captive-born<br />

(7 per cent). Over the same period, 4920 shells were imported, <strong>of</strong> which 89 per cent were<br />

captive-born, 6 per cent were wild-sourced and 4 per cent were captive-bred. The<br />

United States reported the majority <strong>of</strong> imports <strong>of</strong> live specimens (30 574 animals), including<br />

24 147 wild-sourced specimens.<br />

Live, wild-sourced T. derasa imports decreased between 2000 and 2006, but subsequently<br />

increased to a peak <strong>of</strong> 7187 individuals in 2009. Similarly, captive-born and captive-bred live<br />

imports decreased in the first half <strong>of</strong> the period, but subsequently increased to a total <strong>of</strong><br />

1320 individuals in 2009. <strong>Trade</strong> in shells was generally low with the exception <strong>of</strong> 2006, when<br />

the import <strong>of</strong> 4400 shells was reported by Australia.<br />

Table 2. Direct trade in Tridacna derasa from the Solomon Islands, 2000-2010 (all trade reported by<br />

importers).<br />

Term Source 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Total<br />

live W 5543 1815 45 205 30 38 3983 5501 7187 24528<br />

C 4638 1542 1322 5 125 100 997 8729<br />

F 700 100 1 375 817 323 100 2416<br />

I 201 201<br />

live (kg) W 181 181<br />

shells W 100 48 169 317<br />

C 200 3 203<br />

F 4400 4400<br />

meat (kg) F 100 100<br />

Source: CITES <strong>Trade</strong> Database, UNEP-World Conservation Monitoring Centre, Cambridge, UK<br />

Re-exports <strong>of</strong> T. derasa originating in the Solomon Islands over the period 2000 to 2010<br />

comprised 1064 live specimens and 1700 shells as reported by importers and 519 live<br />

specimens and 3400 shells as reported by re-exporters. Live specimens were principally<br />

wild-sourced (52 per cent according to importers; 80 per cent according to re-exporters) and<br />

captive-bred (47 per cent according to importers; 19 per cent according to re-exporters), and<br />

shells were all recorded as captive-born. The majority <strong>of</strong> trade (including all wild-sourced<br />

trade) was re-exported by the United States.<br />

173

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