Comparison of embryonic and adult shells of Sepia officinalis (Cephalopoda, Mollusca)

Dauphin, Yannicke; Luquet, Gilles; Percot, Aline; Bonnaud-Ponticelli, Laure

doi:10.1007/s00435-020-00477-2

Cited by 4 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our observations of the LF nacre in Sepia esculenta are in accordance with the recent comprehensive investigation of the microstructure in the modern cuttlefish Sepia officinalis [32]. Transverse sectioning of S. esculenta cuttlebone reveals a dorsal shield and a ventral chambered zone that consists of septa and pillars (Figure 3A).…”

Section: Lamello-fibrillar Nacre Of Extant Coleoid Cuttlebonessupporting

confidence: 91%

“…This laminar microstructure, also called "type-II nacre", was initially described in extant coleoid cephalopods [29], though it lacks the typical stacked towers of aragonitic hexagonal tablets as in the columnar nacre of cephalopods. The LF nacre occurs commonly in septa and septal necks of cuttlebones, belemnitids, and spirulids (Figure 1C) [30,31] (see review in [32]). The possible presence of LF nacre was also reported in the recent vetigastropod Stomatella planulata [33] and the Eocene gastropod Clavilithes [34].…”

Section: Fiber and Lamello-fibrillar Nacre In Lophotrochozoansmentioning

confidence: 99%

See 1 more Smart Citation

Fibrous or Prismatic? A Comparison of the Lamello-Fibrillar Nacre in Early Cambrian and Modern Lophotrochozoans

Betts

Yun

et al. 2023

Biology

View full text Add to dashboard Cite

The Precambrian–Cambrian interval saw the first appearance of disparate modern metazoan phyla equipped with a wide array of mineralized exo- and endo-skeletons. However, the current knowledge of this remarkable metazoan skeletonization bio-event and its environmental interactions is limited because uncertainties have persisted in determining the mineralogy, microstructure, and hierarchical complexity of these earliest animal skeletons. This study characterizes in detail a previously poorly understood fibrous microstructure—the lamello-fibrillar (LF) nacre—in early Cambrian mollusk and hyolith shells and compares it with shell microstructures in modern counterparts (coleoid cuttlebones and serpulid tubes). This comparative study highlights key differences in the LF nacre amongst different lophotrochozoan groups in terms of mineralogical compositions and architectural organization of crystals. The results demonstrate that the LF nacre is a microstructural motif confined to the Mollusca. This study demonstrates that similar fibrous microstructure in Cambrian mollusks and hyoliths actually represent a primitive type of prismatic microstructure constituted of calcitic prisms. Revision of these fibrous microstructures in Cambrian fossils demonstrates that calcitic shells are prevalent in the so-called aragonite sea of the earliest Cambrian. This has important implications for understanding the relationship between seawater chemistry and skeletal mineralogy at the time when skeletons were first acquired by early lophotrochozoan biomineralizers.

show abstract

Section: Lamello-fibrillar Nacre Of Extant Coleoid Cuttlebonessupporting

confidence: 91%

Section: Fiber and Lamello-fibrillar Nacre In Lophotrochozoansmentioning

confidence: 99%

Fibrous or Prismatic? A Comparison of the Lamello-Fibrillar Nacre in Early Cambrian and Modern Lophotrochozoans

Betts

Yun

et al. 2023

Biology

View full text Add to dashboard Cite

show abstract

“…Afterwards, one chamber was formed by each embryonic stage until stage 30 [Le Pabic et al, 2016]. Several studies have analysed the development, chemical composition, and morphology of S. officinalis shell from embyos to adults[Le Pabic et al, 2016, Le Pabic et al, 2019, Dauphin et al, 2020. Future studies could use S. plangon to study morphological and biochemical changes in the cuttlebone of embryos, juveniles, and adults.…”

mentioning

confidence: 99%

Neuroethology of the visual communication in the mourning cuttlefish Sepia plangon

Galan¹

View full text Add to dashboard Cite

Animals communicate in response to different tasks, including alarm calls, allocation of food, courtship, and mating. Different types of signals are used by animals to communicate, such as chemical signals, vocalisations, colour patterns, and movements. Animal colouration and visual communication have fascinated researchers for decades. Behavioural, anatomical and functional studies are commonly used to study visual communication in both vertebrates and invertebrates. Cuttlefish are well known for possessing intricate body patterns. Cuttlefish use these colourful and dynamic displays to communicate with mates, camouflage, and pursue prey. The cuttlefish central nervous system processes all the visual stimuli and coordinates the expression of postures, body movements, skin textures and colourations that form a body pattern. Interestingly, many species of cuttlefish are colour blind but possess polarisation vision and polarisation patterns in their bodies, which are potentially used for communication with conspecifics. The objective of this thesis is to analyse the mechanisms influencing visual communication and colour patterns in a small coastal cuttlefish Sepia plangon. The mourning cuttlefish S. plangon is a small species with a mantle length (ML) < 140 mm. This species inhabits coastal waters and prefers to forage in seaweed and seagrass environments. It is located to a maximum depth of 85 meters and is active during the day. After introducing the topic of this thesis in detail in chapter 1, we analysed the ontogenetic changes of S. plangon body patterns from embryos to adults in chapter 2. The first description of S. plangon eggs and embryos is included in this chapter. However, because the eggs were collected from their natural environment, only late embryonic development was described. The number and complexity of the body patterns of S. plangon changed throughout the lifespan, transitioning from three body patterns in embryos to a maximum of 18 in males. Seven patterns were exclusive to males and used only during reproductive behaviour. Therefore, in chapter 3, we analysed courtship, mating, and agonistic competition of S. plangon. Three sex ratios were used to study mate choice: 1Male(M):1F(F), 2M:1F, and 1M:2F. Polarised and unpolarised filters were placed between the animals to test the effect of modifying polarised stimuli in the reproductive behaviour of S. plangon. 3D printed cuttlefish models were used to manipulate specific traits (two body sizes, two postures, four body patterns) and determine which factor was crucial to successful mating. The components of the body patterns, reproductive behaviours and visual signals were analysed. We found that only sex ratio had a significant effect on male courtship frequency. Agonistic competition between males included visual signals, and most males avoided fighting. Small males (ML < 80 mm) used a deceptive display to mimic female patterns, avoid male competitions, and mate with females. The dynamic changes in body patterns were the most crucial element for ...

show abstract

Comparative proteomics of the shell matrix proteins of Nautilus pompilius and the conchiferans provide insights into mollusk shell evolution at the molecular level

Hirota,

Tochino,

Seto

et al. 2023

Mar Biol

View full text Add to dashboard Cite

Comparison of embryonic and adult shells of Sepia officinalis (Cephalopoda, Mollusca)

Cited by 4 publications

References 43 publications

Fibrous or Prismatic? A Comparison of the Lamello-Fibrillar Nacre in Early Cambrian and Modern Lophotrochozoans

Fibrous or Prismatic? A Comparison of the Lamello-Fibrillar Nacre in Early Cambrian and Modern Lophotrochozoans

Neuroethology of the visual communication in the mourning cuttlefish Sepia plangon

Comparative proteomics of the shell matrix proteins of Nautilus pompilius and the conchiferans provide insights into mollusk shell evolution at the molecular level

Contact Info

Product

Resources

About