By H. Abdul Jaffar Ali, M. Tamilselvi
This e-book addresses the desires and novice taxonomists just about ascidians in Asia. this can be the 1st ebook of its style and lines colour illustrations performed via the authors in Asia. This booklet presents a quick assessment of ascidians as well as either the taxonomy and distribution of ascidians alongside India’s southern coast. It additionally opens a brand new area for marine researchers within the box of ascidians in Asia. This ebook is the end result of the authors’ 15 years of study adventure within the box of ascidians, making it very invaluable for researchers, coastal planners, port experts and the right kind administration of coastal thermal crops and atomic energy plants.
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Extra resources for Ascidians in Coastal Water: A Comprehensive Inventory of Ascidian Fauna from the Indian Coast
The prosobranch molluscs Erata voluta controls Botryllus schlosseri and Botrylloides leachi, and nudibranch molluscs Goniodoris nodosus, G. custanea and Ancula cristata feed on the colonial ascidians, Diplosoma listerianum, Botryllus schlosseri and Botrylloides leachi. 2 Abiotic Factors Even though the effect of biotic factors drive to control the population of tunicates, abiotic factors in the habitat also influence the distribution and population of ascidians. The abiotic factors include temperature, salinity, light, dissolved oxygen, nitrogen content, turbidity, water current etc.
Lack of job opportunities and the strenuous exercise involved in collection and preservation of the material, and lack of necessary funding may be the major reasons in this regard. Early knowledge on the flora and fauna needs updating to have a better understanding of the present status of the biodiversity. To attain this goal, more intensive collections of materials as well as literature reviews are needed. In this scenario, ascidians are gaining signiﬁcant role in raising the biodiversity of Indian marine ecoysystem.
Kott (2001) described about 30 didemnids as host species. A larger number of photosymbiotic ascidian species are generally distributed at lower latitudes, and thus the distribution of these species is a potential indicator of the warming of seawater. Thus, water temperature may be crucial in limiting the distribution of photosymbiotic ascidians. On the other hand, an increase in water temperature caused by global warming may alter the range of species in the near future. Chapter 5 Commercial Importance From the last two decades, scientists have paid great attention on ascidians, the phylogenetically important species belong to the subphylum Urochordata, as they contribute more in the ﬁeld of biotechnology, biomedicine, aquaculture, biochemistry, microbiology, immunology etc.