scholarly journals Population Dynamics of a Clam, Ruditapes philippinarum, on an Artificially-created Sand Cover on the Tidal Flats at the River Mouth of Midorikawa River.

2002 ◽  
Vol 57 ◽  
pp. 177-187 ◽  
Author(s):  
Hiroaki TSUTSUMI ◽  
Kouko ISHIZAWA ◽  
Miho TOMISHIGE ◽  
Midori MORIYAMA ◽  
Kaori SAKAMOTO ◽  
...  
Keyword(s):  
Population Dynamics ◽  
River Mouth ◽  
Ruditapes Philippinarum ◽  
Tidal Flats

scholarly journals Seasonal changes in short-neck clam (Ruditapes philippinarum) population and its controlling factors on Sashiki Tidal Flats

2018 ◽  
Vol 73 (1) ◽  
pp. 1-10
Author(s):  
Hiroaki TSUTSUMI ◽  
Tasuku NISHIOKA ◽  
Noboru KITAGAWA ◽  
Yoshihiro FUJIYOSHI ◽  
Moriyuki KOZAKI ◽  
...  
Keyword(s):  
Seasonal Changes ◽  
Ruditapes Philippinarum ◽  
Tidal Flats ◽  
Controlling Factors ◽  
Short Neck

scholarly journals Population dynamics of a commercially harvested, non-native bivalve in an area protected for shorebirds: Ruditapes philippinarum in Poole Harbour, UK

2019 ◽  
Vol 32 ◽  
pp. 10 ◽  
Author(s):  
Leo John Clarke ◽  
Luciana S. Esteves ◽  
Richard A. Stillman ◽  
Roger J.H. Herbert
Keyword(s):  
Population Dynamics ◽  
Marine Protected Area ◽  
Condition Index ◽  
Ruditapes Philippinarum ◽  
Ecological Interactions ◽  
Fishing Season ◽  
Before And After ◽  
Harvesting Efficiency ◽  
The Uk ◽  
Lower Biomass

The Manila clam Ruditapes philippinarum is one of the most commercially valuable bivalve species worldwide and its range is expanding, facilitated by aquaculture and fishing activities. In existing and new systems, the species may become commercially and ecologically important, supporting both local fishing activities and populations of shorebird predators of conservation importance. This study assessed potential fishing effects and population dynamics of R. philippinarum in Poole Harbour, a marine protected area on the south coast of the UK, where the species is important for oystercatcher Haematopus ostralegus as well as local fishers. Sampling was undertaken across three sites of different fishing intensities before and after the 2015 fishing season, which extends into the key overwintering period for shorebird populations. Significant differences in density, size and condition index are evident between sites, with the heavily dredged site supporting clams of poorer condition. Across the dredge season, clam densities in the heavily fished area were significantly reduced, with a harvesting efficiency of legally harvestable clams of up to 95% in this area. Despite occurring at significantly higher densities and growing faster under heavy fishing pressure, lower biomass and condition index of R. philippinarum in this area, coupled with the dramatic reduction in densities across the fishing season, may be of concern to managers who must consider the wider ecological interactions of harvesting with the interest of nature conservation and site integrity.

Population dynamics of naturalised Manila clams Ruditapes philippinarum in British coastal waters

2007 ◽  
Vol 151 (6) ◽  
pp. 2255-2270 ◽  
Author(s):  
John Humphreys ◽  
Richard W. G. Caldow ◽  
Selwyn McGrorty ◽  
Andrew D. West ◽  
Antony C. Jensen
Keyword(s):  
Population Dynamics ◽  
Coastal Waters ◽  
Ruditapes Philippinarum

scholarly journals Population dynamics of Ruditapes philippinarum in the man-made seashores of Tokyo Bay

2004 ◽  
Vol 30 (1) ◽  
pp. 193-198 ◽  
Author(s):  
Takayuki TANAKA ◽  
Yusuke SUGAMOTO ◽  
Ikumi MIYAZAKI ◽  
Yuta ITOU ◽  
Masami HAMAGUCHI ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Ruditapes Philippinarum ◽  
Tokyo Bay
Sign in / Sign up

Export Citation Format

Share Document