Ulva rigida   C. Agardh,  1823 (Algae)
Organism information awaits expert curation
Taxonomy
Kingdom:Plantae
Phylum:Chlorophyta
Class: Ulvophyceae
Order:Ulvales
Family:Ulvaceae

Image copyrights: Michael Guiry

Description
Size: up to 20 cm long but up to 1m when free-floating

Thallus form and type: Leafy and leathery

Color: Plant dark green in color.

Substratum: Intertidal rocks, calcareous stones.

Occurrence: Lower mid littoral and intertidal pools, sheltered rocks

Season: November-April

Blades mostly irregularly orbicular to lanceolate or obovate, sometimes expanded, often more or less lobed. Sometimes curved with a firm stipe ending in a disciform holdfast. The middle and basal parts of the blade springing back after being folded, margins often membranaceous. Cells in surface view polygonal.

Chloroplast cap-shaped, filling outer two-thirds of cell cavity. Pyrenoids 2 to 3 per cells.

Asexual reproduction may be by fission (splitting), fragmentation or by zoospores (motile spores). Sexual reproduction may be isogamous (gametes both motile and same size); anisogamous (both motile and different sizes-female bigger) or oogamous (female non-motile and egglike; male motile).


Synonym (s)
Letterstedtia petiolata J. Agardh, 1883
(Heterotypic synonym)
Phycoseris gigantea var. perforata Kutzing, 1849
(Heterotypic synonym)
Phycoseris rigida (C. Agardh) Kutzing, 1843
(Heterotypic synonym)
Phycoseris ulva Sonder, 1845
(Homotypic synonym)
Ulva australis Areschoug, 1854
(Heterotypic synonym)
Ulva lactuca var. rigida (C. Agardh) Le Jolis, 1863
(Homotypic synonym)
Ulva petiolata (J. Agardh) Womersley, 1956
(Heterotypic synonym)
Ulva spathulata Papenfuss, 1960
(Heterotypic synonym)
Ulva scandinavica Bliding, 1969
(Heterotypic synonym)
Ulva armoricana P. Dion, B. de Reviers & G. Coat, 1998
(Heterotypic synonym)
Ulva thuretii B. Foyn, 1955
(Heterotypic synonym)

Common Name (s)
Economic Importance and Threats
Importance:  Commercial
(Human food preparations, animal feed formulations and in medicines. Recently, many researchers considering the use of this biomass for energy needs due to their widespread distribution and abundance in nature. )

Ecology
Habitat:  Reef Associated, Estuarine, Coastal
Trophic Level:  Producer

Biogeography


• Kerala, Tangasseri INDIA (Record: 06/2003-05/2004)
• Maharashtra, Mumbai (Lat: 18.98) (Long: 72.83) INDIA
• Gujarat, Saurashtra (Lat: 21.97) (Long: 70.5) INDIA
• Gujarat, Gopnath (Lat: 21.36) (Long: 72.23) INDIA
• Gujarat, Okha (Lat: 22.47) (Long: 69.08) INDIA
• Gujarat INDIA
• Kerala INDIA
• Andhra Pradesh INDIA
• Karnataka INDIA
• Lakshadweep (Lat: 10) (Long: 73) INDIA
• Andaman and Nicobar Islands, Nicobar Island (Lat: 7.24) (Long: 93.74) INDIA
• Gujarat, Gopnath (Lat: 21.18) (Long: 72.1) INDIA
• Lakshadweep (Lat: 10.5) (Long: 73) INDIA
• Andaman and Nicobar Islands, Nicobar Islands (Lat: 8) (Long: 93.5) INDIA
• Goa, Anjuna INDIA
• West Bengal, Hugli Estuary INDIA
• Kerala, Thirumullavaram INDIA (Record: 06/2003-05/2004)
• Kerala, Neendakara INDIA (Record: 06/2003-05/2004)
• Kerala, Ashtamudi Estuary INDIA (Record: 06/2003-05/2004)
• INDIA
• KUWAIT
• Lakshadweep INDIA
• MADAGASCAR
• MAURITIUS
• MOZAMBIQUE
• Andaman and Nicobar Islands, Nicobar Islands INDIA
• SEYCHELLES
• SOUTH AFRICA
• SRI LANKA
• YEMEN
• Gujarat, Gopnath INDIA
• Lakshadweep, Bassas de Pedro (Lat: 13.5) (Long: 72.58) INDIA (Record: 12/1988) (Depth: 18-70 mts)
• Lakshadweep, Cora Divh (Lat: 13.75) (Long: 72.25) INDIA (Record: 12/1988) (Depth: 18-70 mts)
• Lakshadweep, Sesostris (Lat: 12.91) (Long: 72.08) INDIA (Record: 12/1988) (Depth: 18-70 mts)
• Kerala, Kollam Coast (Lat: 8.9) (Long: 76.63) INDIA
• Karnataka, Bhatkal INDIA (Record: 01/1985-12/1985)
• Andhra Pradesh, Visakhapatnam INDIA
• Gujarat, Porbandar (Lat: 21.63) (Long: 69.6) INDIA

Literature Source(s)
  • (2006) Algaebase Available at - http://www.algaebase.org/
  • Sahoo, D; Nivedita and Debasish (2001) Seaweeds of Indian coast S. B. Nangia, A. P. H. Publishing Corporation, New Delhi 283 pp Available at - NIO, Goa
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Kothi, RS (1971) The growth of excised pieces of Ulva rigida C. Ag. under different photoperiods Seaweed Research and Utilization 1 39820 Available at - NIO, Goa
  • Wynne, MJ and Jupp, BP (1998) The benthic marine algal flora of the Sultanate of Oman: new records Botanica Marina Walter de Gruyter 41 40008 Available at - NIO, Goa
  • Saifullah, SM and Nizamuddin, M (1977) Studies of the marine algae from Pakistan: Ulvales Botanica Marina Walter de Gruyter, Berlin 20 521-536 Available at - NIO, Goa
  • Schilsa, T; Clerck, OD; Leliaerta, F; Bolton, JJ and Coppejans, E (2001) The change in macroalgal assemblages through the Saldanha Bay/ Langebaan lagoon ecosystem (South Africa) Botanica Marina Walter de Gruyter, Berlin, Germany 44 295-305 Available at - NIO, Goa
  • Silva, PC; Basson, PW and Moe, RL (1996) Catalogue of the benthic marine algae of the Indian Ocean University of California Press 79 1259 pp Available at - NIO, Goa
  • Bolton, JJ; Oyieke, HA and Gwada, P (2007) The seaweeds of Kenya: Checklist, history of seaweed study, coastal environment, and analysis of seaweed diversity and biogeography South African Journal of Botany 73 76-88 Available at - NCL, Pune
  • Divekar, RB; Kerkar, V (2008) Present status of seaweed diversity at Anjuna and Vagatore (Goa) Available at - Library Goa University, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Pal, R (2000) A brief report on the taxonomy and in vitro culture of Enteromorpha and Ulva from West Bengal coast Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Tamil Nadu 22 (1 & 2) 51-60 Available at - NIO, Goa
  • Sulekha, S and Panikkar, MVN (2006) Marine green algal flora of Kollam Coast, Kerala, South India Seaweed Research and Utilisation Seaweed Research and Utilisation Association and Suganthi Devadason Marine Research Institute 28(1) 5-21 Available at - NIO, Goa
  • Krishnamurthy, V (2006) Key to the taxonomic identification of green and brown marine algae of India Recent advances on applied aspects of Indian marine algae with reference to global scenario. Seaweed taxonomic identification, aquaculture, resource, environment, fouling and disease Central Salt and Marine Chemicals Research Institute, Bhavnagar 1 1-146 Available at - NIO, Goa
  • Rao, MU (1970) The economic Seaweeds of India Bulletin Of Central Marine Fisheries Research Institute CMFRI, Cochin 20 1-82 Available at - http://eprints.cmfri.org.in/608/1/Bulletin_20.pdf
  • Ambiye, V and Untawale, AG (1992) Deep water marine algal flora of the submerged banks off west coast of India Oceanography of the Indian Ocean Oxford and IBH, New Delhi 247-252 Available at - http://drs.nio.org/drs/handle/2264/2975
  • Manilal, A; Sujith, S; Selvin, J; Kiran, GS; Shakir, C and Lipton, AP (2010) Antimicrobial potential of marine organisms collected from the southwest coast of India against multiresistant human and shrimp pathogens Scientia Marina CSIC 74(2) 287-296 Available at - http://dx.doi.org/10.3989/scimar.2010.74n2287
  • Untawale, AG; Reddy, CRK and Deshmukhe, GV (1989) Ecology of intertidal benthic algae of northern Karnataka coast Indian Journal of Marine Sciences Scientific Publishers 18 73-81 Available at - NIO, Goa
  • Jagtap, T.G. (1992) Marine flora of Nicobar group of islands in Andaman Sea. Indian Journal of Marine Sciences National Institute of Science Communication & Information Resources 21(1) 56-58 Available at - NIO,Goa
  • Kaladharan, P; Zacharia, PU and Vijayakumaran, K (2011) Coastal and marine floral biodiversity along the Karnataka coast Journal of the Marine Biological Association of India Marine Biological Association of India, Cochin, India 53 (1) 121 - 129 Available at - http://eprints.cmfri.org.in/8710/1/121--129--P._Kaladharan.pdf
  • Kaladharan, P; Zacharia, PU and Vijayakumaran, K (2011) Coastal and Marine floral biodiversity along the Karnataka coast Journal of the Marine Biological Association of India The Marine Biological Association of India 53(1) 121-129 Available at - NIO,Goa
  • Jha B, Reddy C.R.K, Thakur M C and Rao M (2009) Seaweeds of India The Diversity and Distribution of seaweeds of Gujarat Coast Springer 211pp Available at - NIO

Page last updated on:2012-11-23

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