![Page 1: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/1.jpg)
Biology of Aspatharia sinuata
Delivered bySHITTU OlalereDept. of Zoology,
University of Ilorin, Nigeria
![Page 2: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/2.jpg)
External Shell Characteristics
![Page 3: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/3.jpg)
Internal Shell Characteristics
![Page 4: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/4.jpg)
Internal Shell Characteristics
![Page 5: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/5.jpg)
Internal Shell Characteristics
![Page 6: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/6.jpg)
The Mantle Cavity
The posterior edges of the mantle folds are modified to form dorsal excurrent and ventral incurrent openings.
![Page 7: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/7.jpg)
Gills
The mantle and gills of bivalves are involved in gaseous exchange.
The gills are modified for filter feeding, they originated from the primitive ctenidia by elongation of the filaments on both sides of the central axis.
The end of the filaments folds backward to make the ctenidia filament assume a slender W shape.
![Page 8: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/8.jpg)
Section through heart and Gills
![Page 9: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/9.jpg)
Feeding
Feeding mechanism
![Page 10: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/10.jpg)
Anatomy of the Internal Organs of Bivalves
![Page 11: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/11.jpg)
Anatomy of the Heart
![Page 12: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/12.jpg)
Reproduction and Development
The glochidia larvae seeks, attach to fins and gills of fishes where they encyst.
Fishes serve as agent of dispersal.
Encysted glochidia larvae undergo metamorphosis into adults which escape from the cyst and sink to the bottom of muds.
![Page 13: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/13.jpg)
Marine forms exhibits external fertilization
Veliger larva swims for about two weeks before spat formation.
Four years to reach adulthood.
Life Cycle of Bivalves
![Page 14: Biology of Aspatharia sinuata Delivered by SHITTU Olalere Dept. of Zoology, University of Ilorin, Nigeria](https://reader036.vdocuments.mx/reader036/viewer/2022081420/56649d6e5503460f94a4eabf/html5/thumbnails/14.jpg)
End of presentationThanks for Listening