New ecological and taxonomic remarks on Sabinella troglodytes and Nanobalcis worsfoldi (Gastropoda: Eulimidae) living on the “slate-pencil sea urchin” from the Mexican Caribbean region

González-Vallejo, Norma Emilia; León-González, Jesús Ángel de

doi:10.22201/ib.20078706e.2018.1.2185

Cited by 4 publications

(2 citation statements)

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“…The number of snails per host usually ranged from 2 to 5, except for a single snail found alone on one specimen of E. tribuloides. Identification was based on shell morphology and colour of the soft parts, following previous studies (Warén and Mifsud 1990;González-Vallejo and León-González 2018). Scanning electron microscopy was performed as described by Queiroz et al (2017) for accurate morphological characterization of the shell.…”

Section: Methodsmentioning

confidence: 99%

“…The genus Nanobalcis Warén and Mifsud, 1990, which comprises three species closely associated with cidaroid sea urchins (Warén and Mifsud 1990), is a consistent example of such a gap in knowledge. Nanobalcis worsfoldi Warén, 1990, which lives on the spines of the cidaroid echinoid, the slate pencil urchin (Eucidaris tribuloides (Lamarck, 1816)), is the only species of this genus recorded in the Western Atlantic (Warén and Mifsud 1990;González-Vallejo and León-González 2018).…”

Section: Introductionmentioning

confidence: 99%

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Sexual dimorphism in the parasitic snail Nanobalcis worsfoldi: a histological and morphometric approach with insights for the family Eulimidae

Sales

Queiroz

2021

Can. J. Zool.

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Sexual dimorphism has long been stressed as a remarkable characteristic of Eulimidae snails. This idea is so common for this family that, even without information on the soft parts, some species were already identified as male or female, as observed in Nanobalcis worsfoldi Warén, 1990. Here, we investigated whether larger and smaller individuals of N. worsfoldi are female and male, respectively, and what are the most useful characteristics to differentiate the sexes. We analyzed shell morphology and morphometry, along with coloration of the soft parts of large and small individuals, and crosschecked our findings through histological analysis. Our results confirmed that (i) larger and smaller individuals are females and males, respectively; (ii) shell morphology is not useful, while morphometry is important to address sexual dimorphism; (iii) since shell length and width showed the most remarkable differences, they are considered the best parameters to predict the sex. Furthermore, conchological characteristics associated with histological analysis suggest that this species could be the first non-sessile eulimid known as a sequential hermaphrodite (protandric) with environmental sex determination, but this remains to be confirmed. Considering that most studies on eulimids are based on shells, the morphometric parameters used here may support future ecological/biological analyses in the family, such as parasitological prevalence, or parasitic burden related to sex.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sexual dimorphism in the parasitic snail Nanobalcis worsfoldi: a histological and morphometric approach with insights for the family Eulimidae

Sales

Queiroz

2021

Can. J. Zool.

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The Ecology of Biotic Interactions in Echinoids

Petsios,

Farrar,

Tennakoon

et al. 2023

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Organisms interacting with echinoids are common and produce diverse traces that are often distinctive and can be preserved in the fossil record. Thus, echinoids provide a wealth of information regarding the role of biotic interactions as drivers of ecological and morphological adaptations over macroevolutionary timescales. Studies documenting interactions with echinoids and the resulting traces have become more numerous. This Element reviews the ecologies of skeletal trace-producing interactions on echinoids in Modern ecosystems and the recognition of those biogenic traces in the fossil record. The authors explore diversification and morphological trends in Meso-Cenozoic echinoid clades and associated predator and parasite groups in the context of selective pressures brought about by the evolution of these biotic interactions. Their intent is that this review promotes additional studies documenting the intensity of biotic interactions with echinoids in both Recent and fossil assemblages and highlights their potential to advance our understanding of ecosystem functioning and evolution. This title is also available as Open Access on Cambridge Core.

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Morphological and Molecular Evidence of an Intergeneric Host-Range in Clavisodalis sentifer (Crustacea: Copepoda: Taeniacanthidae) Associated with Diadematid Sea Urchins from the Western Pacific

Yamamori,

Tanaka,

Uyeno

2024

Zoological Science

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New ecological and taxonomic remarks on Sabinella troglodytes and Nanobalcis worsfoldi (Gastropoda: Eulimidae) living on the “slate-pencil sea urchin” from the Mexican Caribbean region

Cited by 4 publications

References 13 publications

Sexual dimorphism in the parasitic snail Nanobalcis worsfoldi: a histological and morphometric approach with insights for the family Eulimidae

Sexual dimorphism in the parasitic snail Nanobalcis worsfoldi: a histological and morphometric approach with insights for the family Eulimidae

The Ecology of Biotic Interactions in Echinoids

Morphological and Molecular Evidence of an Intergeneric Host-Range in Clavisodalis sentifer (Crustacea: Copepoda: Taeniacanthidae) Associated with Diadematid Sea Urchins from the Western Pacific

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