“DISTRIBUTION AND DIVERSITY OF ECHINODERMATA FROM SIKKA COAST OF GUJARAT”, T3222
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Date
2020-12
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Volume Title
Publisher
JAU JUNAGADH
Abstract
he present study on distribution and diversity of Echinodermata from Sikka
coast of Gujarat were carried out during September-19 to February-20. During the study
period total 159 echinoderms were recorded and the dominant class were Holothuroidea
and Asteroidea. During the research time, a total of eight species belonging to eight
families and seven orders were observed. Echinoderms Viz., Astropecten sp.,
Aquilonastra burtoni, Anthenea rudis, Euantedon sp., Salmacis bicolor, Holothuria
(Lessonothuria) pardalis, Ophioplocusimbricatus and Ophiocomella sp. were recorded
during the study period. During the research period, highest Shannon diversity index
recorded in January at GSFC (H’) - 1.709 while at Vador highest Shannon diversity
index was reported in December - 1.82. Highest evenness index (J’) 0.8415 and 0.9391
were recorded in February at GSFC and VADOR respectively. Highest Margalef
species richness indexes (d) 2.216 were observed in January at GSFC while at Vador
highest value 0.9391 observed in December. Correlation of number of species with
water quality parameter were carried out and negative correlation was observed among
temperature and number of species and positive correlation was observed in pH,
Salinity, Dissolved oxygen, and Total suspended solids Vs number of species. The
range of different water quality parameters were as: Temperature (28⁰C to 33⁰C), pH
(7.9 to 8.14), Salinity (32 ppt to 34 ppt), DO (7.3 mg/L to 8.2 mg/L), Total suspended
solids (1.2 mg/L to 4.6 mg/L).