Ecosystem influences of natural and cultivated populations of suspension-feeding bivalve molluscs: A review Essay

Newell, Roger I.E. “Ecosystem influences of natural and cultivated populations of suspension-feeding bivalve molluscs: A review.“ Journal of Shellfish Research 23.1 (2004):51-62.

The biodeposition abilities of suspension-feeding bivalves were recognized to have an important use in coastal waters. Bivalves were found out to regulate water column processes by excreting Nitrogen and Phosphorus that affect phytoplankton production. Consequently, this has opened the possibility of using bivalves in watershed management initiatives to curb phytoplankton growth.

 

Prezant, Robert S., and Eric J. Chapman. “Freshwater molluscs of the United States Military Academy drainages (West Point, NY) and comparative regional biodiversity of gastropods.”  Northeastern Naturalist 11.3 (2004): 273-294.

A survey of mollusc species was done in various United States Military Academy drainage systems to check if military activities affected the natural habitats of gastropods. The samples in the test sites were procured using fine-meshed dip nets, after which the specimens were preserved. Results showed a higher level of biodiversity in those areas as compared to other gastropod habitats in New York.

 

Vermeij, Geerat J. and Frank P. Wesselingh. “Neogastropod molluscs from the Miocene of western Amazonia, with comments on marine to freshwater transitions in molluscs” Journal of Paleontology 76.2 (2002): 65-70.

The gastropod clade, Neogastropada, as with the majority of the living biota, lacks representatives in freshwater habitats. The discovery of two species, Purpura woodwardi and Nassarius reductus, in low-salinity (freshwater) environments was a chance to explain certain processes that make the transition of marine organisms to freshwater habitats possible.

 

Rawlings, Timothy A. “Adaptations to physical stresses in the intertidal zone: The egg capsules of neogastropod molluscs.” American Zoologist 39 (1999): 230-243.

The protective nature of egg capsules in intertidal neogastropod molluscs were explored, particularly their resistance to the physical stresses commonly found in marine intertidal environments. It was found out that the egg capsule itself may not actually be the factor affecting the egg’s survival but adult’s site selection and the embryo’s innate self-protecting ability.

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Carter, Joseph G. “ Evolutionary implications of a duplivincular ligament in the Carboniferous pinnid Pteronites (Mollusca, Bivalvia, Pteriomorphia).” Journal of Paleontology 78.1 (2004): 235-239.

The paper presents examinations of the duplivincular ligament and other structural features in pinnid Pteronites, an early representative of the clade Pinniodea. These studies were presented as morphological and ligamental evidence, together with recent molecular findings, that the pinnids were not derived from Pterineid ancestors.

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Norekian, Tigran P. and Richard A Satterlie.“Serotonergic neural system not only activates swimming but also inhibits competing neural centers in a pteropod mollusc.” American Zoologist 41.4 (2001): 293-300.

This is a review of how the serotonergic neural system in Clione limacina, a representative pteropod mollusc controls both physical and neural processes. The studies affirm how the mollusc’s neural system, as with all other animals, prevent the occurrence of incompatible behaviors. It was also found out that aside from increasing the mollusc’s swimming speed, they also influence its reproductive behavior.

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