WebAug 26, 2024 · The Bivalve Ligament. Bivalves use muscles to close their shells, but they do not use muscles to open them. Instead they have a ligament. A mostly organic … WebFeb 17, 2024 · The shell of a bivalve has two valves and these are joined together by the ligament at the dorsal edge of the shell. The ligament is made of a strong, flexible and …
BIVALVES - Food and Agriculture Organization
Webpattern of arcoid ligaments by change in the boundary conditions of the morphogenetic field. As well as modeling th e pattern forma tion, morphospace analysis of bivalve liga-ments will help us to understand wide varie ties of bivalve ligaments, including the noetiid ligament, in terms of evolution of develop mental processes. WebAnatomy of a bivalve. Inside the shell. Bivalve molluscs come in many shapes and sizes, and live in many different ways. However, there are features shared by all bivalves. … ordering ice cream cake online
A new structural model of bivalve ligament from Solen grandis
WebThe ligament of Plicatula is antero-posteriorly compressed, overarching the hinge plate, inserted within a deep triangular pit, and slightly asymmetrical with the right branch longer that the left ... A hinge ligament is a crucial part of the anatomical structure of a bivalve shell, i.e. the shell of a bivalve mollusk. The shell of a bivalve has two valves and these are joined together by the ligament at the dorsal edge of the shell. The ligament is made of a strong, flexible and elastic, fibrous, proteinaceous material which … See more The ligament is an uncalcified elastic structure comprised in its most minimal state of two layers: a lamellar layer and a fibrous layer. The lamellar layer consists entirely of organic material (a protein and collagen matrix), … See more When the adductor muscles of a bivalve mollusk contract, the valves close, which compresses the ligament. When the adductor muscles relax again, the elastic resiliency of the ligament reopens the shell. Scallops (Pectinidae) swim through the water column … See more External hinge ligaments may be described as having an "orientation" that is amphidetic (between the beaks), opisthodetic (behind/ posterior to the beaks), or, rarely, prosodetic (before the beaks). Then, there are four main "structural types": … See more The hinge ligament of a bivalve shell can be either internal, external, or both, and is an example of complex development. Various types of hinge ligaments have been found in living species (i.e. extant species), and the ligaments can be reconstructed in … See more E.R. Trueman, General features of Bivalvia. In: Moore R.C., editor. Bivalvia. Ligament. In: Treatise on invertebrate paleontology. Vol. 2. Geological Society of America and University of Kansas Press; 1969. p. N58-N64. Part N - Mollusca, Bivalvia Vol. 6. See more WebOct 1, 2011 · This paper aimed to provide a new structural model of bivalve ligament from S. grandis based on SEM observations, XRD, and IR spectra analysis. We followed the terms of Trueman (1969), revised by Waller (1990) regarding ligament morphology and layers. We found the S. grandis ligament structure comprises three layers: an OL, ML, … ireport sec