Publication Date:
2021-07-24
Description:
Species diversity and abundance of four major groups of Echinoderms (Asteroidea, Ophiuroidea, Echinoidea and Holothuroidea) were recorded from two rocky shores Buleji and Sunehri during January to December 2014. Twenty surveys were done during low tides from intertidal zone. Twenty one (21) species of Echinoderms were identified including Asterina lorioli, Asteropectin indicus, Anthenea rudis, Asterina sp. Ophioplocus imbricatus, Ophionereis dubia, Macrophiothrix aspidota, Ophiothrix sp. Ophiothella sp., Echinometra mithai, Echinometra sp., Holothuria atra, Holothuria arenicola, Holothuria leucospilota, Holothuria pardalis, Holothuria verrucosa, Holothuria cinerascens, Aslia forbesi, Staurothyone rosacea, Stolus buccalis and Ohshimella ehrenbergii. A total of 1,062 specimens were collected from Buleji and 778 from Sunehri. Holothuria arenicola and Holothuria pardalis shows highest relative abundance in all seasons. The highest abundance (28.14%) and (34.45%) of Holothuria arenicola was recorded during pre-monsoon season and the lowest relative abundance (0.29%) was observed in Holothuria leucospilota and Aslia forbesi from Buleji in Southwest monsoon and Holothuria cinerascens (0.42%) from Sunehri in post-monsoon season.Highest Shannon –Wiener diversity index (H') at Buleji was recorded in Northeast monsoon season (2.24) and in post-monsoon season (1.97) at Sunehri. No significant difference was observed in between seasons and species at (P〉0.05, 0.49) and species between localities at (P〉0.05, 0.11).
Keywords:
Biology
;
Abundance
;
diversity
;
Asteroidea
;
Ophiuroidea
;
Echinoidea
;
Holothuroidea and Karachi coast.
Repository Name:
AquaDocs
Type:
article
,
TRUE
Format:
application/pdf
Format:
application/pdf
Format:
101-117
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