Cementation

[Malone]

I was interested in the process of cementation bivalves use to attach. I used the internet to research and couldn't come up with much information. I don't know if I am using the right search terms or if there isn't that much information. I thought this was the best avenue to find the answers. Maybe @doushantuo could help but any help would be appreciated!

[Fossildude19]

LINK

[doushantuo]

The distribution of cementation:

Monomyarian condition:MMM=mantle margin mode

Anomiacea: byssal attachment(calcified byssus),MMM, right(dextral)side,shallow marine

Ostreacea: mantle margin,monomyarian,sinistral (left)valve,shallow marine,sometimes estuarine

Pectinacea:"Hinnites".Spondylidae 

 

Plicatulacea:dextral:(Dimyidae:dimyarian,by way of exception)

Dimyarian condition:

Chamacea,Hippuritacea,Pandoracea(obligately dextral attachment)

non -marine:Unionacea(Acostaea and Pseudomuelleria exceptionally monomyarian)

below:

My Mytilus byssus "meme"

 

 

MFP=Mussel foot protein

 

 

 

The MFP's (redoxmodulator proteins) are important,as can be intuitively surmised just from their position on/in the byssal attachment site.

The hardening of byssal fibres takes place by a process called "quinone tanning"(the oxidation of the protein catecholinase)

The proteins worth remembering are tyrosinehydroxylase and catecholinase.

 

S(canning)E(lectron)M(icroscope)S of byssal threads:

 

how the fibrils look:

 

 

 

 

 

 

The mechanical properties of the byssus differ along the lenght of the structure!

 

 

 

 

 

Below:silk homologues in byssus proteins,worth mentioning because archeologists believe to have discovered "mussel silk" items of clothing

 

 

notice the "Spidroin"(for its name).  

 

 

spatial and functional(/histochemical) relations between foot(/byssus gland) and byssus:

 

 

 

 

 

the non marine Dreissena byssus

 

 

 

 

 

Stress/strain curves:

 

[doushantuo]

thought it best to separate the paleontologicical data from the neontological ones

[doushantuo]

I'd urge everyone to treasure this JPG,because IT IS EXTREMELY RARE:

Marine biological publications tend to be surrounded by very heavy paywalls,frankly it's a miracle I dug out this.

Pleased as punch,I am,said Yoda

 

[DPS Ammonite]

The heck with surgical uses of manmade byssuses, I want an elastic retractable byssus for my rock hammer to attach it to my belt clip to make it harder to lose my hammer.

[Malone]

You all are awesome!!!! I will spend considerable time studying this information you have given me! It's hard for me to emphasize how much I appreciate your knowledge effort and kindness!