Larval abundance and its relation to macrofouling settlement pattern in the coastal waters of Kalpakkam, southeastern part of India

Abstract

The present work revealed that salinity, water temperature, and food availability were the most crucial factors affecting the abundance of larvae and their settlement as macrofouling community in the coastal waters of Kalpakkam. Quantitative as well as qualitative results showed that late post-monsoon (April-May) and pre-monsoon (June-September) periods were found to be suitable periods for larval growth, development, and survival to adult stages for most of the organisms. Clustering of physico-chemical and biological (including larval and adult availability) data yielded two major clusters; one formed by northeast (NE) monsoon months (October-January) and the other by post-monsoon/summer (February-May) months, whereas; pre-monsoon months (June-September) were distributed between these two clusters. Among all the major macrofouler groups, only bivalves established a successful relationship between its larval abundance and adult settlement. Principal component analysis indicated good associations of bivalve larvae with polychaete larvae and adult bivalves with adult barnacles. However, biotic relation between ascidians and bryozoans was observed both in the larval as well as adult community.

Associated fauna and effects of epibiotic barnacles on the relative growth and reproductive indices of <em>Stramonita haemastoma</em> (Gastropoda: Muricidae)

“…In fact, it has been shown that salinity influences all physical-chemical variables of seawater and controls the larval dispersal and recruitment patterns of epi-and endobiotic species (Nair 1965), while seawater temperature influences chemical and biological interaction and regulates the growth of benthic organisms (Sahu et al 2013). Consequently, the shells of smaller gastropods are usually less colonized by epifauna than those of larger gastropods, which also agrees with our observations.…”

“…Fouling is likely to be a function of time, food availability, seawater salinity and temperature (Wahl 1989, Sahu et al 2013. In fact, it has been shown that salinity influences all physical-chemical variables of seawater and controls the larval dispersal and recruitment patterns of epi-and endobiotic species (Nair 1965), while seawater temperature influences chemical and biological interaction and regulates the growth of benthic organisms (Sahu et al 2013).…”

Study on the Diversity of Marine Macro Fouling Organisms of Cuddalore Coast, India

“…Macro fouler's distribution and diversity in Port Blair, Andaman and Nicobar Islands were carried by Deepa et al, 2015. They also similarly reported the Balanus spp were dominant in all stations and arthropods and mollusks are predominant in fouling community. Our study in concurrent with the results of Sahu et al, 2015 who studied the biofouling diversity at Kalpakkam coastal waters and found that the barnacle sp. is pioneer as macro foulers and Perna viridis was climax in this community.…”

“…Biofouling causes great operational hazards in different marine artificial structures across the globe. Biofouling reported that Shut down of 235 MW power station (Sahu et al, 2015). Although a plethora of research has been carried out on biofouling organisms in and around world, most of the studies were focused on antifouling strategies (Dehmordi et al, 2011;Deepa et al, 2015).…”

Estrategias de control de mejillones invasores: una revisión

“…Por lo tanto, llevar a cabo una metodología para controlar estos organismos en diferentes etapas de la vida es de suma importancia. En seis estudios analizados se abordaron las diferentes etapas de vida de los mejillones (Folino-Rorem, et al, 2006;Matsuo, et al, 2009;Schaefer, et al, 2010;Sahu, et al, 2013;Yuan, et al, 2016).…”