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Intraspecific regulation in the population densities of the intertidal gastropod <i><span style="font-size:14.0pt;line-height:115%;font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";color:black;mso-ansi-language:EN-IN; mso-fareast-language:EN-IN;mso-bidi-language:HI" lang="EN-IN">Planaxis sulcatus(</span></i><span style="font-size:14.0pt;line-height:115%;font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";color:black;mso-ansi-language:EN-IN; mso-fareast-language:EN-IN;mso-bidi-language:HI" lang="EN-IN">Gastropoda<i>, </i>Planaxidae) in the Suez Canal</span>

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Title Intraspecific regulation in the population densities of the intertidal gastropod Planaxis sulcatus(Gastropoda, Planaxidae) in the Suez Canal
 
Creator Mohammed, S Z
 
Description 325-328
Monthly monitoring of the intertidal gastropod (Planaxis sulcatus) population
in the Suez Canal rocky shores revealed a
decrease in the adult abundance during recruitment peaks. This produced a
periodical imbalance on the adult densities and reflect the regulatory roles of
recruits on Planaxis population. Results of experimental manipulations
to investigate these roles indicated that an increase in the overall densities
reduced the rate of individual growth and declined the adult abundance. The
results agreed with the hypothesis that recruits and juveniles have a
competitive advantage over adults as, they are small and require less energy to
survive. It is postulated, therefore that, the rapid decline in the individual
numbers during intense competition could be one of the regulatory agents in the
Planaxis population dynamics in the Suez Canal.
 
Date 2014-01-13T10:57:19Z
2014-01-13T10:57:19Z
1999-09
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/25607
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.28(3) [September 1999]