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Role of conspecific cues and sugars in the settlement of cyprids of the barnacle, Balanus amphitrite

DRS at CSIR-National Institute of Oceanography

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Title Role of conspecific cues and sugars in the settlement of cyprids of the barnacle, Balanus amphitrite
 
Creator Khandeparker, L.
Anil, A.C.
 
Subject Balanus amphitrite
arthropodin protein complex
 
Description Gregarious settlement in barnacle is attributed to the settlement-inducing protein complex of cuticular glycoprotein, arthropodin. In this study, we characterized arthropodin protein complex (APC) from crude protein extracts of whole barnacle (AE), and also from soft body (SbE) and shell (ShE). The settlement of cyprids exposed to surfaces coated with different crude protein extracts and APC components was evaluated. In the natural environment, larvae are also exposed to different dissolved sugars. Therefore, the cyprids were tagged with different sugars and exposed to AE, SbE and ShE in order to elucidate their specific role in determining the way barnacle cyprids identify conspecifics. A previously undescribed 66-kDa subunit was observed in shell and soft body APC, and a 98-kDa subunit was observed in shell APC. Both the subunits were shown to inhibit settlement when alone but promoted settlement in combination (ShE), suggesting that these proteins interact in a coordinated manner. The crude adult extract (AE) facilitated higher settlement compared with shell or soft body extract. However, when cyprids were tagged with different sugars and exposed to the surfaces coated with different crude protein extracts, settlement response differed and was jointly determined by the type and concentration of sugars. Such interactions could play an important role in nature as larvae encounter surfaces covered with different glycoproteins and also experience different dissolved cues
 
Date 2011-07-29T07:26:31Z
2011-07-29T07:26:31Z
2011
 
Type Journal Article
 
Identifier Journal of Zoology, vol.284(3); 2011; 206?214
no
http://drs.nio.org/drs/handle/2264/3886
 
Language en
 
Relation J_Zool_London_284_206.jpg
 
Rights Copyright [2011]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher The Zoological Society of London