A multifaceted comparison between the spider crabs<i>Epialtus bituberculatus</i>and<i>Epialtus brasiliensis</i>(Brachyura: Majoidea: Epialtidae) in the neotropical areas of the western Atlantic: morphology, morphometry and DNA markers

Tamburus, Ana Francisca; Mantelatto, Fernando Luís Medina

doi:10.1080/23766808.2016.1236234

Cited by 3 publications

(3 citation statements)

References 47 publications

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“…The high densities of spider crabs in the present work can be explained by a taxonomic bias. Until recently, E. brasiliensis and E. bituberculatus were considered distinct species, but here, we considered them as a single species (sensu Tamburus and Mantelatto, 2016). In the present study, when we separately considered the density of the sensu morphotype called E. brasiliensis, we found mean densities of 19.97, 12.67 and 6.32 ind/L in habitats composed of H. musciformis, S. cymosum, and A. spicifera, respectively.…”

Section: Epialtus Brasiliensis Associated With Seaweedmentioning

confidence: 49%

“…All samples were subsequently preserved in 10% formalin. Crabs were counted and identified to the species level according to Tamburus and Mantelatto (2016). After screening, seaweeds were identified according to Joly (1967) and their volume was measured by water displacement in a graduated cylinder, according to Montouchet (1979).…”

Section: Methodsmentioning

confidence: 99%

“…Even so, species differentiation is characterized as difficult and raises questions. Specifically, the distribution or misidentification of specimens may be due to similarities in morphological characteristics because they share the same habitat (see Tamburus and Mantelatto, 2016). Recently, however, their morphological and phylogenetic analyses unified both species as E. brasiliensis, and thus we used this classification here.…”

Section: Epialtus Brasiliensis Associated With Seaweedmentioning

confidence: 99%

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Association of Epialtus brasiliensis Dana, 1852 (Brachyura, Majoidea) with different species of seaweed

2020

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Seaweed aggregates form secondary substrates on rocky shores, providing habitats for phytal organisms such as the spider crab Epialtus brasiliensis Dana, 1852. This species is one of the most abundant macroinvertebrate component from seaweed communities. Although the literature suggests that E. brasiliensis lives in many species of seaweed, their density has only been reported in communities of Sargassum spp. This study assessed the density of the spider crab E. brasiliensis associated with the seaweed Sargassum cymosum Agardh, 1820, Hypnea musciformis (Wulfen) Lamouroux and Acanthophora spicifera (Vahl) Borgesen. We expected to observe a higher density of E. brasiliensis in S. cymosum, which shows greater morphological complexity, followed by H. musciformis, with intermediate complexity, and then by A. spicifera, with low complexity. We found that the density of these crabs can be as abundant in H. musciformis as has been previously reported for S. cymosum, but in both species, the density was higher than in A. spicifera. Overall, our findings improve the knowledge of the phytal habitats used by E. brasiliensis in rocky shore environments.

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Section: Epialtus Brasiliensis Associated With Seaweedmentioning

confidence: 49%

Section: Methodsmentioning

confidence: 99%

Section: Epialtus Brasiliensis Associated With Seaweedmentioning

confidence: 99%

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Association of Epialtus brasiliensis Dana, 1852 (Brachyura, Majoidea) with different species of seaweed

2020

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DNA sequence database as a tool to identify decapod crustaceans on the São Paulo coastline

Mantelatto

Terossi

Negri

et al. 2017

Mitochondrial DNA Part A

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DNA barcoding has emerged as an efficient tool for taxonomy and other biodiversity fields. The vast and speciose group of decapod crustaceans is not an exception in the current scenario and comparing short DNA fragments has enabled researchers to overcome some taxonomic impediments to help broadening knowledge on the diversity of this group of crustaceans. Brazil is considered as an important area in terms of global marine biodiversity and some regions stand out in terms of decapod fauna, such as the São Paulo coastline. Thus, the aim of this study is to obtain sequences of the mitochondrial markers (COI and 16S) for decapod crustaceans distributed at the São Paulo coastline and to test the accuracy of these markers for species identification from this region by comparing our sequences to those already present in the GenBank database. We sampled along almost the 300 km of the São Paulo coastline from estuaries to offshore islands during the development of a multidisciplinary research project that took place for 5 years. All the species were processed to obtain the DNA sequences. The diversity of the decapod fauna on the São Paulo coastline comprises at least 404 species. We were able to collect 256 of those species and sequence of at least one of the target genes from 221. By testing the accuracy of these two DNA markers as a tool for identification, we were able to check our own identifications, including new records in GenBank, spot potential mistakes in GenBank, and detect potential new species.

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Ecology determines appearance: a new taxonomic solution for the soft bottom dwelling spider crab Pisoides bidentatus (A. Milne-Edwards, 1873) from the Sea of Japan, with remarks on Pisoides ortmanni (Balss, 1924) and the northwestern Pacific Pugettia Dana, 1851 (Majoidea: Epialtidae)

Marín

Golubinskaya

Sharina

2023

Zootaxa

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The northwestern Pacific soft bottom dwelling spider crab, Pisoides bidentatus (A. Milne-Edwards, 1873) (Brachyura: Majoidea: Epialtidae), is re-described using an integrative approach. As a result, it is transferred to the genus Scyra Dana, 1851 (Epialtidae) based on morphological and molecular data, as well as already described larval morphology, which certainly better reflects the phylogenetic relationships of the species. Japanese Pisoides ortmanni (Balss, 1924), for which morphology and ecology are very similar to P. bidentatus as well as Pugettia quadridens (De Haan, 1839) and the closely related Pugettia ferox Ohtsuchi & Kawamura, 2019, are also transferred to Scyra. The “reduced” morphology of both species is very different from the related northwestern Pacific Scyra spp. and Pugettia spp., which are mostly decorating algae-dwellers. We associate the relatively long ambulatory legs, a smooth tear-drop shaped carapace with a reduced dorsal armature and slightly pronounced pseudorostral spines, characteristic of P. bidentatus and P. ortmanni with their open soft (mainly sand) bottom habitats, where it is difficult to find a foothold or shelter, but it is necessary to resist constant currents. Such morphology is also characteristic of spider crabs of the genera Libinia Leach, 1815 and Doclea Leach, 1815 (Epialtidae: Pisinae), which are also living in similar habitats/conditions and represent a convergent morphological appearance.

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A multifaceted comparison between the spider crabsEpialtus bituberculatusandEpialtus brasiliensis(Brachyura: Majoidea: Epialtidae) in the neotropical areas of the western Atlantic: morphology, morphometry and DNA markers

Cited by 3 publications

References 47 publications

Association of Epialtus brasiliensis Dana, 1852 (Brachyura, Majoidea) with different species of seaweed

Association of Epialtus brasiliensis Dana, 1852 (Brachyura, Majoidea) with different species of seaweed

DNA sequence database as a tool to identify decapod crustaceans on the São Paulo coastline

Ecology determines appearance: a new taxonomic solution for the soft bottom dwelling spider crab Pisoides bidentatus (A. Milne-Edwards, 1873) from the Sea of Japan, with remarks on Pisoides ortmanni (Balss, 1924) and the northwestern Pacific Pugettia Dana, 1851 (Majoidea: Epialtidae)

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