Invasion dynamics of a non-indigenous bivalve clam; Venerupis aurea (Gmelin, 1791), in Lake Qarun, Egypt.
The invasive clam Venerupis aurea is native to the Mediterranean Sea. The species has now become established in Lake Qarun, Egypt. This is the first record of the establishment of this clam in the Lake. The histograms of the length-frequency distribution indicated multiple consecutive cohorts and the species is able to establish self-sustaining population. Total weight increased relatively slower than shell length in summer. Isometric growth pattern was recorded in other seasons. Negative allometric growth pattern during summer may explain spawning. The female to male ratio is 1: 0.87. Sexual maturity is attained at 11.8 mm shell length in summer and 16.6 mm shell length in winter. Histological studies revealed two different stages in both male and female clams namely, immature and developing. The results from these preliminary studies have indicated that V. aurea is able to reproduce and survive in Lake Qarun and has an important impact in the local community of the Lake.
2. Baily, N. T. J. 1995. Statistical Methods in Biology. Cambridge University Press. Cambridge. 255 pp.
3. Ball, J. 1939. Geography of Egypt.Buluq Press, Cairo, 221 pp.
4. Bedir, M. A., El-Shershaby, A. M., Hanafy, M. H. and Kandeel, K.E. 2008. Ecological and biological studies on two Indo-Pacific bivalves in the Suez Canal lakes. 1- Seasonal variations in population structure and growth rates. J. Egypt. Ger. Soc. Zool., 56 D: 135-165.
5. Bownes, S .J and McQuaid. 2006. Will the invasion mussel Mytilus galloprovicialis Lamarck replace the indigenous Perna perna L? On the south coast of South Africa? J. Exp. Mar. Biol. Ecol. 338: 140-151.
6. Branch, G. M and Stefani, C. N. 2004. Can we predict the effects of alien species?: A case-history of the invasion of South African by Mytilus galloprovicialis (Lamarck). J. Exp. Mar. Biol. Ecol. 300: 189-215.
7. El-Ghobashy, A. E., Mahmad, S. Z., Kandeel, S. K. and El-Ghitany, A. H. 2011. Factors associated with the distribution of the invasive bivalve clams" Donax variabilis (Say, 1822)" at the area of the Mediterranean Coast preferred by marine fish larvae, New Damietta, Egypt. J. Ameri. .Sci., 7(1): 1051-1062
8. El-Menif, N. T, Guezzi, Y, Lahbib, Y, Ramdani, M and Flower,,R. J. 2008. Effects of biogenic concretions, epibionts, and endobionts on the relative growth of the clam Venus verrucosa in Bizerta Lagoon, Tunisia. J. Shellfish Res. 27(5): 1087-1092.
9. El-Shabrawy, G. M. 2001. Ecological studies on macrobenthos of Lake Qarun, El-Fayoum, Egypt. J. Egypt. Acad. Soc. Environ .Dev. (B-Aquaculture) 1: 29â€“49.
10. El-Shabrawy, G.and Dumont, H. J. 2016. First record of a ctenophore in lakes: the comb-jelly Mnemiopsis leidyi A. Agassiz, 1865 invades the Fayum, Egypt. BioInvas. Records 5(1): 21â€“24
11. FAO. 2005. FISAT II version 1. 2. 2. Food and Agriculture Organization, Romr, Italy.
12. Fathi, A. A. and Flower, R. J. 2005. Water quality and phytoplankton communities in Lake Qarun (Egypt). Aquat. Sci., 67: 350-362.
13. Fishar M. R. A. 2000. Long-term changes (1974 -1996) of benthic macroinvertebrates in Lake Qarun (Faiyoum â€“ Egypt). Egypt. J. Aquat. Biol. Fish., 4: 61-73.
14. Fouda, M. M. and M. M. Abou-Zied. 1990. Bivalves of the Suez Canal Lakes. Proc. Zool. Soc. Egypt. 21, 231-240.
15. Gabr, H. R. 1991. Ecological and biological studies on molluscs of Lake Timsah. M. Sc. Thesis, Suez Canal University, Egypt.
16. Gaspar, M. B, Santos, M. N. and Vasconcelos, P. 2001. Weight-length relationships of 25 bivalve species (Mollusca: Bivalvia) from the Algarve coast (southern Portugal). J. Mar. Biol. Assoc. UK 81: 805-807.
17. General Authority for Development of Fish Resources, 2000. Annual Fish Statistical Yearbook 1999. Ministry of Agriculture and Land Reclamation.
18. Howard, D. W. and Smith, C. S. 1983. Histological techniques for marine bivalve mollusks. NOAA Tech.Memo. NMFS-F/NEC-25.Northeast Fisheries Center, Woods Hole, USA.
19. Johannessen, O. H. 1973. Length and weight relationships and the potential production of the bivalve Venerupis pullastra (Montagu) on a sheltered beach in western Norway. Sarsia 53: 41-48.
20. Kandeel, K. E. 2008. Length-weight relationships and monthly variations in body weights and condition indices of two clam's species; Venerupies aurea and Tapes decussata in Lake Timsah, Egypt. Catrina 3 (1): 111-124.
21. Kandeel, K. E., 2006. Quantitative assessment of gamete production in two commercially harvested clams, Venerupis aurea and Tapes decussata (Bivalvia: Veneridae) in Lake Timsah, Suez Canal, Egypt. Cartina. 1: 41-52.
22. Mansour, S. A. Messeha, S. S, and Sidky, M. M. 2000. Ecotoxicological Studies. 1. Qualitative and quantitative determination of salt composition in Lake Qarun water and its sources. Egypt. J. Aquat. Biol. Fish., 4: 271-303.
23. Mohammad, S. H, Belal, A. A. M and Hassan, S. S. Z,. 2014. Growth, age and reproduction of the commercially clams Venerupis aurea and Ruditapes decussatus in Timsah Lake, Suez Canal,Egypt.Indian. J. Geo-Mar. Sci. 43(4): 589-600.
24. Mollison, D. 1986. Modelling biological invasion: change, explanation, prediction. Philosophical Transactions Royal Soci.Lond.Ser: B 314: 675-693
25. Monti, D., Frenkiel, L. and Moueza, M., 1991. Demography and growth of Anomalocardia brasiliana(Gmelin) (Bivalvia: Veneridae) in a mangrove, in Guadeloupe (French West Indies). J. Moll. Stud., 57: 249-257.
26. Purcell, J. E., Shiganova, T. A., Decker M. B. and Houde, E. D. 2001. The ctenophore Mnemiopsis in native and exotic habitats: U.S. estuaries versus the Black Sea basin. Hydrobiologia 451: 145â€“176.
27. Reise, K, Olenin S, and Thieltges D.W. 2006. Are aliens threatening European aquatic coastal ecosystems? Helgoland Mar. Res.60: 77-83.
28. Ricker, W. E. 1975. Computation and interpretation of biological statistics of fish population. Bull. Fish. Res. Board Canada 191: 1-382.
29. Schmidt, A, Wehrmann, A. and Dittmann, S. 2008 .Population dynamics of the invasive Pacific oyster Crassostrea gigas during the early stages of an outbreak in the Wadden Sea (Germany). Helgoland Marine Research 62: 367- 376.
30. Shadrin, N. V, EL-Shabrawy, G. M ,Anufriieva, E.V; Goher, M. E, and Ragab, E. 2016. Long-term changes of physicochemical parameters and benthos in Lake Qarun (Egypt): Can we make a correct forecast of ecosystem future? Knowledge and Management of Aquatic Ecosystems: 417: 18-31.
31. Tan, K. S and Morton, B. 2006. The invasive Caribbean bivalve Mytilopsis sallei (Dreissenidae) introduced to Singapore and Johor Bahru, Malaysia Baffles. Bull. Zool. 54(2): 429-434.
32. Tillier, L. and Bavay. A. 1905. Les mollusques testaces du Canal du Suez. Bull. Soci. Zool. Fran., 30: 170-181.
33. Waangkulangkul, K, and Lheknim, V. 2008. The occurrence of an invasive alien mussel Mytilopsis adamsi Morrison, 1946 (Bivalvia: Derissenidae) in estuaries and lagoons of the lower south of The Gulf of Thailand with comments on their establishment. Aquat. Invas. 3(3): 325-330.
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