Pacific Spirorbids In The East Atlantic

Knight‐Jones, E. W.; Knight-Jones, Phyllis

doi:10.1017/s0025315400028472

Cited by 9 publications

(5 citation statements)

References 12 publications

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“…The barnacle cyprid is discriminating in its choice of settlement site [36,37,38]. The capacity to recognize specific molecular configurations by contact was first described for cypris larvae of Balanus balanoides (L.) [37,38].…”

Section: Attachment Of Barnaclesmentioning

confidence: 99%

“…The laboratory and field studies have demonstrated that barnacle cyprids prefer to metamorphose on or near conspecifics. The settlement pheromone has been recognized as arthropodin or settlement factor (SF+), a glycoprotein present in the adults [36,38,39]. A soluble form of arthropodin was reported to be six orders of magnitude more potent than the native glycoprotein [40].…”

Section: Attachment Of Barnaclesmentioning

confidence: 99%

“…The cyprid after settling on a surface molts its carapace and the body exoskeleton except for the embedded parts of the antennule and metamorphoses into an adult. The secretion of the cement is most likely linked to the moulting cycle as the cement cells are modified epidermal cells [35].The barnacle cyprid is discriminating in its choice of settlement site [36,37,38]. The capacity to recognize specific molecular configurations by contact was first described for cypris larvae of Balanus balanoides (L.) [37,38].…”

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confidence: 99%

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Underwater adhesion: The barnacle way

Khandeparker

Anil

2007

International Journal of Adhesion and Adhesives

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Barnacle cement is an underwater adhesive insoluble protein complex. Marine proteins secreted by the invertebrates such as barnacles and mussels have potential application as powerful adhesives as they insolubilize and adhere to variety of substrates in aqueous environment. The adhesive properties of the barnacle adhesive proteins have been utilized for various dental and medical purposes. These polyphenolic proteins are currently in demand as they are non-toxic biomaterial, highly effective glues and it is very difficult to raise antibodies against these proteins and owing to this low immunogenicity is also attractive for human applications. This review provides a brief account of biochemical composition of barnacle adhesive proteins and their applications. On immersion of a surface in the marine environment the fouling process is initiated instantly. Biofouling is one of the most serious problems and costs the US Navy an estimated $1 billion per annum [1]. In general, the first stage is conditioning of the surface by the adsorption of organic and inorganic compounds. Conditioned surfaces are then colonized by various microorganisms such as bacteria, diatoms etc. [2,3] followed by attachment of algal spores and invertebrate larvae [4]. These biofilms play an important role in mediating settlement and metamorphosis of invertebrate larvae [5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]. Chemical cues such as exopolymers and other excreted products produced by microorganisms have been shown to be involved in settlement of macrofoulers, metamorphosis induction, growth and development of organisms [15,16,20,21,22,23,24,25]. Attachment of barnaclesAmong the macrofoulers, barnacles are the dominant fouling organisms found throughout the world. A lot of research on barnacles has been carried out with respect to it's settlement and ecology [11,12,13,14,15,16,17,20,21,22,23,26,27,28].The larval development of these organisms includes six naupliar instars and a non-feeding presettling cyprid instar. The anatomy of the cyprid is different from the preceding naupliar instars (Figure 1). The cypris larvae explore the substratum hunting a place for attachment [29]. The attaching antennular segment consists of large, thin, circular sucking disc from the edge of which cement is secreted, and the antennular disc becomes attached to the substratum [30,31]. Two types of barnacle adhesion to a substratum have been observed, namely temporary and permanent adhesion [17]. The cyprid employs the antennular disc, an adhesive organ, for temporary attachment to the substratum [32,33] (Figure 2). While exploring a substratum, the barnacle cypris larva leaves behind ' footprints' of temporary adhesive (CTA) 4[34], which is believed to be secreted by the glands of the antennular disc and serves to hold the cyprid onto the substratum while it searches for a place to settle. Barnacle cement is used for permanent settlement and is an underwater adhesive of insoluble protein complex. The cyprid after settling on a surface molts its carapace an...

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Section: Attachment Of Barnaclesmentioning

confidence: 99%

Section: Attachment Of Barnaclesmentioning

confidence: 99%

mentioning

confidence: 99%

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Underwater adhesion: The barnacle way

Khandeparker

Anil

2007

International Journal of Adhesion and Adhesives

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“…Spread of these species would be slow or impossible without transport by flotsam (including stones in the holdfast of buoyant algae) and shipping either by hull fouling or in ballast tanks (Knight-Jones and Knight-Jones 1979, and reference therein). As a result, spirorbid species have been spread around the world with many Pacific species common in the East Atlantic as an example (Knight-Jones and Knight-Jones 1980).…”

Section: Pest or Guestmentioning

confidence: 99%

Introduced marine pests- how they get here, how do we get rid of them, and how do we know they are really introduced?

Hutchings

2007

Pest or Guest

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Numerous marine introductions into Australian waters have occurred and will continue to occur. The mechanisms by which they occurred and the difficulties of eradication once they have become established are discussed. Introduced species are often categorised as being either a pest or cryptogenic and the criteria used to distinguish between these categories is discussed, although they may not be mutually exclusive. The main concern is that, for most species, we lack information as to the impact which they are having on native species and their associated marine communities. Finally, the difficulty in determining the native range of a species and the taxonomic difficulties of deciding if a species represents a new invasion, or just a natural range extension is commented on.

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“…Known from all oceans except the Arctic. Northern hemisphere records are given by Knight-Jones & Knight-Jones (1980), southern ones by Knight-Jones & Knight-Jones (1984) as P. rosepigmentata. We have recently seen it in collections from the Juan de Fuca Straits, Vancouver Island, Canada, so its known range on the Pacific coast of North America approaches the latitude of Falmouth in Britain.…”

Section: R E S U L T Smentioning

confidence: 99%

New Records of Tubeworms Established in British Harbours

Thorp

Jones-Knight

1986

J. Mar. Biol. Ass.

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Populations of the spirorbid Pileolaria berkeleyana ( = P. rosepigmentata) are recorded in harbours at Plymouth, Falmouth and Portsmouth and of three similarly abundant serpulids, Filogranula calyculata and Metavermilia multicristata at Abereiddy and Vermiliopsis striaticeps at Falmouth. Ship-borne introductions may well have occurred but the Abereiddy serpulids have more probably come from undiscovered populations nearby, in areas too rocky and deep for easy sampling.INTRODUCTIONThree apparently exotic species of tubeworms, a spirorbid and two serpulids, have been established for at least five years in aquarium tanks at the Portsmouth Polytechnic Marine Laboratory. The tanks receive a continuous flow of unfiltered sea water, which is pumped from Langstone Harbour via a header tank, with little if any change in temperature. They contain many slate slabs from a flooded quarry (at Abereiddy, in South Wales), which had been opened to the sea in 1932 and is used as a harbour for small boats. The most recent transfer of slates to Portsmouth was in 1972. The slates were brought in because they bore populations of a native spirorbid (Thorp, 1975), but the associated fauna was not closely studied at that time because a general account of Abereiddy quarry and its fauna was being prepared by Hiscock & Hoare (1975).The exotic serpulids occurred particularly on the undersides of the slates, but had not been noted by Hiscock & Hoare, nor in any other British fauna list. They also occurred on the underside of a disused heater/cooler plate supporting the slates in one of the tanks, which indicated that they had been breeding in that tank.

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Pacific Spirorbids In The East Atlantic

Cited by 9 publications

References 12 publications

Underwater adhesion: The barnacle way

Underwater adhesion: The barnacle way

Introduced marine pests- how they get here, how do we get rid of them, and how do we know they are really introduced?

New Records of Tubeworms Established in British Harbours

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