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European Journal of Environmental Ecology

Volume 10, Issue 1, 2023
Mcmed International
European Journal of Environmental Ecology
Issn
XXX-XXXX (Print), 2393 - 9672 (Online)
Frequency
bi-annual
Email
editorejee@mcmed.us
Journal Home page
http://mcmed.us/about/ejee
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Abstract
Title
IMPACT OF RAINFALL AND WIND SPEED ON THE POPULATION DYNAMICS OF A FIDDLER CRAB, UCA ANNULIPES (H. Milne Edwards, 1837) AT MUTTUKADU ESTUARY, EAST COAST, TAMILNADU, INDIA
Author
P. Arunan* and P. Sekhar
Email
arunan_paul@yahoo.com
keyword
Uca annulipes, population dynamics, Sex ratio, Rainfall, Wind speed.
Abstract
Impact of rainfall and wind speed on the population dynamics of the fiddler crab Uca annulipes, was investigated during a one-year period in the Muttukadu estuary, East coast, Tamil Nadu, India. The study specifically addressed factors such as absolute density, sex ratio and population structure. Six transects were bordered in a mangrove area of Muttukadu estuary. Monthly, two transects were randomly selected and visited. On each transect, ten 0.50 m2 were sampled during low tide periods from April 2013 to March 2014. The data on monthly rainfall and wind speed was collected from the Regional Meteorological Centre, Nungambakkam, Chennai – 06. Totally 1158 crabs were collected of which 537 were male (46.37 %) 452 were female (39.03%) and 169 were young ones (14.60 %) during the study. Ovigerous females were present in all samples with greater frequencies in January 2014 whereas the highest young ones were present in October 2013.
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