1. Dai PF, Rao XZ, Chen YS (2004) Ultrastructural studies on spermatozoon and spermatogenesis of Ruditapes philippinarum. Chin J Zool 39:26–32
2. De Rosa M, Zarrilli S, Paesano L, Carbone U, Boggia B, Petretta M, Maisto A, Cimmino F, Puca G, Colao A, Lombardi G (2003) Traffic pollutants affect fertility in men. Hum Reprod 18:1055–1061
3. Deng DG, Tan QK (2000) Ultrastructural studies of spermatogenesis of the fresh-water mussel, Cristaris plicata (Bivalva, Unionidae). Acta Hydrobiol Sin 25:63–66
4. Dong QX, Huang CJ, Tiersch TR (2005) Spermatozoal ultrastructure of diploid and tetraploid Pacific oysters. Aquaculture 39:115–125
5. Dorange G, Le Pennec M (1989) Ultrastructural characteristics of spermatogenesis in Pecten maximus (Mollusca, Bivalvia). Invertebr Reprod Dev 15:109–117