Occurrence of the non-indigenous brittle star Ophiothela cf. mirabilis Verrill, 1867 (Echinodermata, Ophiuroidea) in natural and anthropogenic habitats off Santa Catarina, Brazil

Lawley, Jonathan W.; Fonseca, Adriana Carvalhal; Júnior, Edson Faria; Lindner, Alberto

doi:10.15560/14.2.453

Cited by 10 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Oceano Índico: Madagáscar (Cherbonnier & Guille 1978), Moçambique, Mar Vermelho (Clark & Rowe 1971), Austrália (Rowe & Gates 1995). Brasil: Bahia até Santa Catarina (Hendler et al 2012;Alitto et al 2018;Lawley et al 2018). Ophiothrix Müller & Troschel, 1840 Ophiothrix angulata (Say, 1825) Figura 62…”

Section: Ophiotrichidae Ljungman 1867unclassified

Guia ilustrado dos Echinodermata da porção sul do Embaiamento Sul Brasileiro

Bueno

Alitto

Guilherme

et al. 2018

PECEN

View full text Add to dashboard Cite

Este guia ilustrado apresenta 57 espécies de Echinodermata Bruguière, 1791 [ex Klein, 1734] registradas na porção sul do Embaiamento Sul Brasileiro (ESB), incluindo o litoral sul do Estado de São Paulo, todo o litoral do Paraná e norte de Santa Catarina. O guia destina-se a pesquisadores e estudantes que atuam ou gostariam de atuar com o grupo e serve de auxílio na identificação em campo e laboratório. Apresentamos uma caracterização do filo Echinodermata, uma breve descrição da área de estudo, técnicas de coleta e preservação dos exemplares. Para cada classe, são apresentadas caracterizações com as principais estruturas morfológicas de importância taxonômica, seguida das diagnoses das espécies registradas na ESB. Dentro de cada classe, as espécies foram organizadas por família e depois alfabeticamente de acordo com o gênero e a espécie. Para cada espécie foram incluídas fotos, diagnoses, distribuição geográfica e hábitat quando disponíveis em literatura. Esse trabalho é o primeiro guia ilustrado de equinodermos no Brasil e complementa de forma consistente o conhecimento da biodiversidade do grupo, gerando subsídios para futuras intervenções, tomadas de decisões e manutenção da diversidade deste incrível grupo de animais marinhos.Palavras chave: Equinodermos, sul do Brasil, diversidade, Sudoeste Atlântico, Taxonomia.

show abstract

Section: Ophiotrichidae Ljungman 1867unclassified

Guia ilustrado dos Echinodermata da porção sul do Embaiamento Sul Brasileiro

Bueno

Alitto

Guilherme

et al. 2018

PECEN

View full text Add to dashboard Cite

show abstract

“…Colour patterns. The most common colour pattern in Brazil has been yellow-orange (Hendler et al ., 2012; Mantelatto et al ., 2016; Lawley et al ., 2018), but purple was also described in specimens from Araçá Bay (Alitto et al ., 2018). In the present study, the most common colouration patterns are orange and purple in living specimens and reddish purple, brown, cream, or white for those fixed in alcohol.…”

Section: Resultsmentioning

confidence: 81%

“…The genus Ophiothela was restricted to Pacific waters (Clark, 1976), but recently introduced populations have been described in the Atlantic (Hendler et al ., 2012; Mantelatto et al ., 2016; Araújo et al ., 2018; Lawley et al ., 2018). Since then, there has been no consensus in the identification of Ophiothela species on the Brazilian coast.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Unravelling the taxonomic identity ofOphiothelaVerrill, 1867 (Ophiuroidea) along the Brazilian coast

et al. 2020

View full text Add to dashboard Cite

Since 2012, when Ophiothela was first described in the Atlantic, there has been no consensus regarding its identification. It has been described as O. mirabilis, O. cf. mirabilis, O. danae, or only Ophiothela sp. In order to fill these gaps, our aim was to test if specimens from Brazil are Ophiothela mirabilis and/or Ophiothela danae. Syntypes from the Museum of Comparative Zoology and United States National Museum, Smithsonian Institution, were used. We examined species boundaries of the small six-rayed brittle star Ophiothela using independent character sets utilizing morphology (external morphology and morphometry) and molecular data (16S and COI). Concordance was found between the analyses indicating that Ophiothela sp. from Brazil (BR), Ophiothela mirabilis and Ophiothela danae are closely related. We suggest that O. danae should be considered as a junior synonym of O. mirabilis. A detailed description of O. mirabilis BR is presented using external morphology and microstructural ossicles (arm plates, vertebra, dental and oral plates). This description includes new diagnostic features, particularly regarding its microstructures: (i) transspondylous articulation (first record in Ophiotrichidae); (ii) eight smooth knobs on the dorsal surface of the vertebrae (to date only in Ophiothela); (iii) vertebrae with distal keel divided into two separate end processes matching the two large dorsal grooves proximally (first time in the literature); and (iv) an opening on both sides of the oral plate (as seen in other fissiparous species Ophiactis savignyi and Ophiocomella ophiactoides).

show abstract

“…as also proposed in several studies in Brazil(Hendler and Brugneaux, 2013;Bumbeer and Rocha, 2016;Mantelatto et al, 2016;Araújo et al, 2018;Lawley et al, 2018).In just 20 years, individuals of O. mirabilis have colonized coastlines spanning more than 6,000 km of latitude(Tavares et al 2021), from their rst reported presence in southern Brazil(Hendler et al. 2012) northward along the South American coast to the Caribbean Sea (Hendler and Brugneaux 2013; Ferry et al 2020) and southeastern Florida (Glynn et al 2019).…”

mentioning

confidence: 74%

Exotic Brittle Star Interactions With Native Octocoral Epizoites: An Endemic Benthic Ctenophore in Peril?

Glynn

Coffman

Detloff

et al. 2021

Preprint

View full text Add to dashboard Cite

Widespread and large populations of the exotic eastern Pacific ophiuroid brittle star Opthiothela mirabilis now occur in southeastern Florida, extending the range of this recently introduced species from southern Brazil northward to the eastern Caribbean Sea and Florida. The Florida brittle stars, representing two lineages, are epibionts on shallow (3-18 m depth), tropical/subtropical plexaurid (e.g., Eunicea spp., Muricea elongata) and gorgoniid (Antillogorgia spp.) octocorals. The scope of this study includes recent distributional records of O. mirabilis in south Florida, field abundances in relation to the cohabiting endemic ctenophore Coeloplana waltoni, behavioral observations of the ophiuroid, ctenophore and the predatory amphipod Caprella penantis, as well as a laboratory experiment testing the effects of the alien ophiuroid on the native ctenophore. Individuals of O. mirabilis have been collected near St. Lucie Inlet, extending its northern-most range by about 110 km since 2019. Two years of field sampling have demonstrated significant declines of the native, benthic ctenophore with increasing abundances of the exotic ophiuroid. Evidence suggests that the ophiuroid is negatively affecting the abundances of the ctenophore through interference competition, greatly aided by its abrasive armature of calcareous spines, plates and hooks. Sporadic and intense predation by a caprellid amphipod (Caprella penantis) also probably contributes to the ctenophore’s decline, but to a lesser extent than that caused by the ophiuroid. Adding to the risk of extinction of C. waltoni is its narrow requirement of living octocorals as hosts and restricted distribution in southeast Florida and the Bahamas.

show abstract

Occurrence of the non-indigenous brittle star Ophiothela cf. mirabilis Verrill, 1867 (Echinodermata, Ophiuroidea) in natural and anthropogenic habitats off Santa Catarina, Brazil

Cited by 10 publications

References 9 publications

Guia ilustrado dos Echinodermata da porção sul do Embaiamento Sul Brasileiro

Guia ilustrado dos Echinodermata da porção sul do Embaiamento Sul Brasileiro

Unravelling the taxonomic identity ofOphiothelaVerrill, 1867 (Ophiuroidea) along the Brazilian coast

Exotic Brittle Star Interactions With Native Octocoral Epizoites: An Endemic Benthic Ctenophore in Peril?

Contact Info

Product

Resources

About