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Tagging News OCEANOGRAPHIC RESEARCH INSTITUTE TAGGING NEWS NEWS FROM THE ORI TAGGING PROJECT NUMBER 26 Published July 2013, Results from 2012 Welcome to the 26th edition of the Tagging their numbers in 2011, which is very encouraging IN THIS ISSUE News! bearing in mind that the populations of both these Over the last four years the Tagging Project has fish species are considered to be overfished. Are Progress to date (2) seen some of the best years it has ever we perhaps seeing the results of the stricter fishing experienced, with over 10 000 fish tagged each regulations imposed in 2005? Only time will tell… Percentage of fish tagged year since 2009 (numbers we haven't seen since The Eastern Cape (22.9%) and Western Cape along the SA coast (3) 1996 even with our strict motto of 'quality rather (20.3%) remained the regions where the bulk of than quantity'), and we hope to continue this the tagging took place. This result is expected as Top 10 species tagged (3) achievement well into the future. Despite these there are far more tagging members residing in Institutional scientific increased tag numbers, the membership of the these areas as well as a greater abundance of fish tagging (4) project has remained fairly consistent with species that can be targeted all year round both previous years, with 2012 producing a further 152 from the shore and offshore, including estuaries. KwaZulu-Natal Sharks new members, bringing the total number of The Southern Cape (13.8%), Transkei (12.3%) Board tagging (4) participants to 5 282 anglers since the project's and Zululand (10.0%) also had good tag numbers, inception in 1984. although Zululand decreased by 2% from 2011. Commercial charter groups (4) Third highest number tagged since 1996 A recent publication in the African Journal of A total of 10 858 fish (the third highest number Marine Science, Volume 35(2), has highlighted Special thanks (4) tagged since 1996 (see graphs overleaf) were some of the remarkable achievements of the ORI tagged and a remarkable 781 (7.2%) recaptures Tagging Project. Amongst these are more than Anglers who have tagged were reported during 2012, which was the second 632 publications, which include over 268 formal 10 or more fish (5) highest recapture rate after the record breaking publications in scientific journals, books and Main species tagged (8) recapture rate achieved in 2010 (8.8%). A students' theses. Despite these successes there comparison of tagging effort by five major is no room for complacency. Linefish management “Spotties” of the cooperative tagging projects worldwide revealed in South Africa is facing some of its toughest that the ORI challenges yet and Langebaan Lagoon MPA A comparison of tagging effort by five major cooperative tagging projects from around (9) Tagging Project the world as of the end of 2011 (ORICFTP = Oceanographic Research Institute despite its obvious Cooperative Fish Tagging Project; NSWGTP = New South Wales Gamefish Tagging definitely ranks as Project; NZGTP = New Zealand Gamefish Tagging Project; SCMGFTP = South Carolina socio-economic Movements and dispersal one of the more Marine Game Fish Tagging Project; SUNTAG = Australian National Sportsfishing importance to the Association Tagging Project; CTCNMFS = Cooperative Tagging Centre of the National of leervis (10) successful projects Marine Fisheries Service) country as a whole, Tagging Total Percent of its kind and has Initiated Area of operation the recreational Comparison of growth one of the highest Programme tagged recaptured sector is still only South East Atlantic & South ORICFTP 1984 251969 5.2 rates for couta (11) recapture rates West Indian Oceans being paid lip Indian & South Western NSWGTP 1973 384243 1.8 service by the (see table). This is Pacific Oceans Seven simple steps for South Western Pacific despite the larger NZGTP 1975 61685 3.1 powers that be. As reporting a recaptured diversity of fish that Ocean such it is really SCMGFTP 1974 North Atlantic Ocean 134578 9 fish (12) we allow our South Western Pacific important to keep SUNTAG 1987 643200 7.9 members to tag Ocean successful, long- Atlantic & North Pacific CTCNMFS 1954 314868 4.4 compared to other Ocean term projects such projects. Our as the ORI Tagging EDITED BY current priority species list spans some 100 fish Project going because ultimately wise decision- species from elasmobranchs (i.e. sharks and rays) making must be based on sound data and this is Stuart Dunlop to game and reef fish. To date 374 different fish exactly what the TaggingProject strives to provide. species have been tagged and the information The fact that this project involves the voluntary Bruce Mann gained has helped to develop species-specific support of anglers who are contributing towards regulations to enable more sustainable use of our the wise management and conservation of our Bernadine Everett linefish resources. Some examples include linefish resources (recently termed “Citizen management of roman, garrick/leervis, shad/elf, Science”) makes it so much more important. The slinger, galjoen, dusky kob, red steenbras, white bottom line is that as anglers and taggers we must CONTACT DETAILS steenbras and many others. Furthermore, the keep doing the job well; every suitable fish caught Tagging Project has also made a major must be carefully handled, properly tagged, contribution towards evaluating the effectiveness quickly released and the relevant data correctly Oceanographic Research of our marine protected areas and enabling recorded and all recaptures reported. By sticking Institute quantification of the amount of spill over of fish to these basic principles we can all make a PO Box 736 from these protected areas. valuable contribution to ensure the sustainable Durban future of our precious linefish. 4000 Almost double their numbers in 2011 South Africa In terms of species tagging composition, galjoen Citizen scientists Cell: +27 079 529 0711 (12.6%), garrick/leervis (10.3%), dusky kob We sincerely hope that you enjoy this exciting Tel: +27 31 328 8222 (9.5%), spotted grunter (4.6%) and white issue of the Tagging News. We would like to say a Fax: +27 31 328 8188 steenbras (3.5%) were the top five species tagged big thank you to all of our tagging members for Email: [email protected] in 2012. Interestingly, the number of garrick/leervis their ongoing support as well as to the numerous and dusky kob tagged in 2012 was almost double anglers who have provided information on Web: www.oritag.org.za continued on page 2 PROGRESS TO DATE continued from page 1 FISH TAGGED PER YEAR AND PER ANGLER tag recaptures. The long-term success of this project is entirely thanks to your on-going contributions towards the wise use and 14000 Average no. tagged per angler 25 conservation of our marine linefish species. For those of you who Total no. tagged Average fish tagged.angler 12000 have not already seen your tagging profile, please go to 20 www.oritag.org.za (to login you need to enter your tagging reference 1 - 10000 number as a six digit number, e.g. TA4218 and repeat this number as 15 your password). The tagging instruction booklet and this edition of 8000 the Newsletter are also available on the website. Furthermore, the electronic data sheets for tag release and recapture submissions via 6000 10 email/fax are also available for download. If possible, we prefer this Fish tagged.year 4000 method of data submission as it guarantees that we receive the data. 1 .year Please feel free to distribute this edition of the Newsletter to your 5 2000 - fellow anglers. -1 0 0 We wish you tight lines and happy tagging! 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Year % FISH RECAPTURE PER YEAR AND NUMBER OF TAGS BOUGHT FROM SUPPLIER, CUMULATIVE NUMBER OF FISH TAGGED ISSUED TO MEMBERS AND USED BY MEMBERS 10 300000 30000 9 Bought Issued Used 25000 250000 Cumulative number tagged 8 7 200000 20000 6 15000 5 150000 4 10000 100000 Number of tags 3 Percenatge recaptured 2 50000 5000 Recap % Cumulative no. tagged 1 0 0 0 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Year Year Average no. New Active Total no. tagged per Cumulative Cumulative Species Max Years Max Km Year Members members tagged angler no. members no. tagged Tagged Recap # Recap % Free Moved 1984 283 277 2553 9.2 283 2553 103 23 0.9 0.6 723 1985 441 502 8088 16.1 724 10641 153 237 2.9 1.1 804 1986 304 586 7434 12.7 1028 18075 170 217 2.9 2.8 1227 1987 271 569 8823 15.5 1299 26898 180 249 2.8 2.8 1374 1988 218 547 8894 16.2 1517 35792 176 384 4.3 4.1 1443 1989 232 569 11237 19.7 1749 47029 192 530 4.7 4.1 1016 1990 289 597 10435 17.5 2038 57464 162 515 4.9 4.0 1892 1991 208 586 11982 20.4 2246 69446 185 697 5.8 6.3 1625 1992 213 611 12777 20.9 2459 82223 188 689 5.4 7.2 1408 1993 299 591 12056 20.4 2758 94279 175 643 5.3 7.5 1606 1994 242 604 10442 17.3 3000 104721 181 501 4.8 8.1 1670 1995 249 593 11733 19.8 3249 116454 171 498 4.2 8.6 1676 1996 229 558 10930 19.6 3478 127384 175 350 3.2 7.8 1554 1997 141 449 9601 21.4 3619 136985 174 553 5.8 11.0 1897 1998 127 444 7412 16.7 3746 144397 152 443 6.0 8.4 1820 1999 123 424 6575 15.5 3869 150972 158 311 4.7 12.0 1186 2000 68 371 6101 16.4 3937 157073 148 227 3.7 10.6 1679 2001 65 391 6820 17.4 4002 163893 144 306
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