Mechanical defensive adaptations of three Mediterranean sea urchin species

Voulgaris, Konstantinos; Varkoulis, Anastasios; Zaoutsos, Stefanos; Stratakis, Antonios; Vafidis, Dimitris

doi:10.1002/ece3.8247

Cited by 3 publications

(2 citation statements)

References 49 publications

(56 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Diadema setosum (Leske, 1778) in the order Diadematoida, commonly known as the porcupine or long-spined sea urchin, is considered as one of the oldest known extant species in the genus Diadema (Coppard & Campbell, 2006). D. setosum displays features of typical sea urchin, including a dorso-ventrally compressed body and equipped with particularly long, brittle and hollow spines that are mildly venomous (Bilecenoğlu et al, 2019; Voulgaris et al, 2021). This species can be easily differentiated from other Diadema species by the presence of five distinctive white dots at the aboral side around the anal pore between the ambulacral grooves (Figure 1A).…”

Section: Introductionmentioning

confidence: 99%

Chromosomal-level genome assembly of the long-spined sea urchinDiadema setosum(Leske, 1778)

Hui,

Chan,

Chan

et al. 2024

Preprint

View full text Add to dashboard Cite

The long-spined sea urchin Diadema setosum is an algal and coral feeder widely distributed in the Indo-Pacific and can cause severe bioerosion on the reef community. Nevertheless, the lack of genomic information has hindered the study its ecology and evolution. Here, we report the chromosomal-level genome (885.8 Mb) of the long-spined sea urchin D. setosum using a combination of PacBio long-read sequencing and Omni-C scaffolding technology. The assembled genome contained scaffold N50 length of 38.3 Mb, 98.1 % of BUSCO (Geno, metazoa_odb10) genes, and with 98.6% of the sequences anchored to 22 pseudo-molecules/chromosomes. A total of 27,478 genes including 23,030 protein-coding genes were annotated. The high-quality genome of D. setosum presented here provides a significant resource for further understanding on the ecological and evolutionary studies of this coral reef associated sea urchin.

show abstract

Section: Introductionmentioning

confidence: 99%

Chromosomal-level genome assembly of the long-spined sea urchinDiadema setosum(Leske, 1778)

Hui,

Chan,

Chan

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…For example, the Mg/Ca ratio content has been demonstrated to alter mechanical properties and is highly variable among different species, ossicles and stereom types as well as in association with different food type availability and environmental abiotic factors (e.g. temperature and salinity) [66][67][68][69]. The stereom porosity, mainly in spines, has also been investigated in detail [50,55,[70][71][72].…”

Section: Introductionmentioning

confidence: 99%

Hexagonal Voronoi pattern detected in the microstructural design of the echinoid skeleton

Perricone

Grun

Rendina

et al. 2022

J. R. Soc. Interface.

View full text Add to dashboard Cite

Repeated polygonal patterns are pervasive in natural forms and structures. These patterns provide inherent structural stability while optimizing strength-per-weight and minimizing construction costs. In echinoids (sea urchins), a visible regularity can be found in the endoskeleton, consisting of a lightweight and resistant micro-trabecular meshwork (stereom). This foam-like structure follows an intrinsic geometrical pattern that has never been investigated. This study aims to analyse and describe it by focusing on the boss of tubercles—spine attachment sites subject to strong mechanical stresses—in the common sea urchin Paracentrotus lividus . The boss microstructure was identified as a Voronoi construction characterized by 82% concordance to the computed Voronoi models, a prevalence of hexagonal polygons, and a regularly organized seed distribution. This pattern is interpreted as an evolutionary solution for the construction of the echinoid skeleton using a lightweight microstructural design that optimizes the trabecular arrangement, maximizes the structural strength and minimizes the metabolic costs of secreting calcitic stereom. Hence, this identification is particularly valuable to improve the understanding of the mechanical function of the stereom as well as to effectively model and reconstruct similar structures in view of future applications in biomimetic technologies and designs.

show abstract

The Abundance of the Sea Urchin Paracentrotus lividus on the Coasts of Gökçeada

Aslan

2022

Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries

View full text Add to dashboard Cite

Tüm dünyada uygulanan avcılık yasaklarına rağmen Paracentrotus lividus türünün gonadlarına olan rağbet her geçen gün artmakta ve doğal ortamlarından sömürülen kestaneler nedeniyle denizel ekosistemlerin dengesi bozulmaktadır. Ülkemizde yerel halk tarafından besin olarak tüketilmeyen bu tür üzerinde, son yıllarda yoğun ihracat talebi nedeniyle bir avcılık baskısı oluşmuştur. P. lividus türünün avcılığının ekosistem temelli sürdürülebilir olarak gerçekleştirilebilmesi için bu türün ülkemiz denizlerindeki üreme biyolojisinin yanında stok durumu gibi temel bilgilerin bilinmesi de çok önemlidir. Ancak türün stok bilgileri ile ilgili çalışmaları ülkemizde yetersizdir. Bu çalışma, 2012 ve 2018 yıllarının yaz mevsimlerinde SCUBA ile görsel sayım tekniği kullanılarak P. lividus türünün Gökçeada kıyılarındaki yoğunluğu hakkında bir ön araştırma niteliğindedir. Farklı uzunluktaki transektler ile gerçekleştirilen çalışmada en fazla birey 2012 yılında 4 birey m-2 ile Laz koyu’nun kayalık kıyılarında, 2018 yılında ise 5 birey m-2 ile Kuzulimanı transektinin 112-120 m arasındaki 5 m genişliğinde (40 m2), Kokina III transektinin 0-52 m arasındaki 10 m genişlikte (520 m2) gözlenmiştir. SACFOR ölçeğine göre Gökçeada kıyılarında eğer P. lividus türü gözlemleniyorsa da sadece yaygın ya da sık olarak bulunduğu saptanmıştır. Etkili ve sürdürülebilir bir deniz kestanesi yönetim planı için P. lividus türünün ülkemizde denizlerindeki stok durumu ivedilikle belirlenmelidir.

show abstract

Mechanical defensive adaptations of three Mediterranean sea urchin species

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 3 publications

References 49 publications

Chromosomal-level genome assembly of the long-spined sea urchinDiadema setosum(Leske, 1778)

Chromosomal-level genome assembly of the long-spined sea urchinDiadema setosum(Leske, 1778)

Hexagonal Voronoi pattern detected in the microstructural design of the echinoid skeleton

The Abundance of the Sea Urchin Paracentrotus lividus on the Coasts of Gökçeada

Contact Info

Product

Resources

About