Catalogue of living crinoids (Echinodermata: Crinoidea) from Brazil.

Knowledge of living crinoids from Brazil is chiefly restricted to the contributions of Dr Luis Roberto Tommasi between the decades of 1950 and 1970. Herein we present an updated catalogue of the crinoids occurring along the Brazilian coast, including data on synonyms, type localities, type material, geographical distribution, bathymetric ranges, and occurrences of species along the coast. The data is based on an extensive revision of the literature and on a survey of several databases. A total of 20 species were catalogued, of which two are endemic (Phrixometra longipinna var. brasiliensis and Thaumatometra minutissima). According to information from the literature, P. longipinna var. brasiliensis represents an undescribed taxon. Although Brazil supports the greatest number of crinoid species in the Southwestern Atlantic, its crinoid fauna remains understudied and likely underestimated. Research on crinoids remains a subject of great potential, not only for taxonomy but also for other areas of knowledge.

Taxonomic guide and historical review of echinoids (Echinodermata: Echinoidea) from northeastern Brazil.

The class Echinoidea contains among the best-known echinoderms. The group has left the most complete fossil record of this phylum, and contains about 1000 living species, of which 51 are recorded along the Brazilian coast. Although the first record of echinoids in Brazil was made 369 years ago, the knowledge of this fauna remains quite unsatisfactory from a taxonomic and ecological point of view, particularly in the north and northeastern regions of the country. This study provides the first annotated list of echinoids from northeastern Brazil. The studied material largely belongs to collections of the Federal University of Paraíba (CIPY), Federal University of Sergipe (LABIMAR-UFS), Federal University of Bahia (MZUFBA), University of São Paulo (MZUSP), and National Museum of the Federal University of Rio de Janeiro (MNRJ). Thirty-two species from 29 genera, 18 families, and 10 orders were identified. Descriptions of species are provided. Highest diversities of Echinoidea were encountered for the states of Bahia (19 spp.), Alagoas (11 spp.), Paraíba (10 spp.), Ceará (7 spp.), Rio Grande do Norte (7 spp.), and Pernambuco (6 spp.). On the basis of the data analysed, Maranhão (2 spp.), Piauí (2 spp.), and Sergipe (3 spp.) have the lowest diversity. Sandy substrates and depths below 10 m were the least sampled areas over the continental shelf. Although the studied species are common, some taxonomic problems were encountered and discussed. We also provide ecological information and comments on status of the species from the studied region. As a result of this inventory, we were able to provide the first assessment of the echinoid fauna of northeastern Brazil.

Taxonomic status of the genera Amphipholizona H.L. Clark, 1915 (Ophiuroidea, Ophiolepididae) and Amphigyptis Nielsen, 1932 (Hemieuryalidae): systematic placement and synonymy.

We synonymize Amphipholizona (Ophiolepididae) and Amphigyptis (Hemieuryalidae), suggest their transfer to family Amphiuridae, and propose a new species combination (Amphipholizona perplexa new comb.). We further provide a new diagnosis for the genus Amphipholizona, a dichotomic identification key for the two species now belonging to this genus and re-describe and illustrate for the first time some of the internal characters, such as the genital plates, vertebrae, and inner side of the lateral arm plate.

Redescription of Hemieuryale pustulata von Martens, 1867 (Echinodermata, Ophiuroidea) based on Brazilian specimens, with notes on systematics and habitat association.

We redescribe Hemieuryale pustulata on the basis of 325 specimens obtained from the continental shelf off northeastern and southeastern Brazil. This is the first record of the species for Brazil. We illustrate for the first time details of the dental plate, oral plate, and vertebrae. Few morphological variations were observed in our extensive material. All specimens were associated with the gorgonian Nicella guadalupensis, suggesting an obligatory association in the Brazilian littoral. H. pustulata did not reveal a particular pattern of distribution on its host gorgonian, but larger gorgonians tend to support a larger number of ophiuroids. In addition to expanding the knowledge on morphology and ecology, we extend the known bathymetric distribution of the species, which is now known from 18 to 330 m.

Taxonomic guide and historical review of starfishes in northeastern Brazil (Echinodermata, Asteroidea).

Presently more than 1900 species of sea stars are recognized, of which 77 are recorded for the coast of Brazil. Although the first starfish record in Brazil was published 363 years ago, our knowledge of this fauna remains unsatisfactory from a systematic and ecological point of view, particularly in the north and northeastern regions of the country. This study provides the first annotated list of sea stars from northeastern Brazil. Material described herein is housed at the collections of the Federal University of Paraíba, Federal University of Sergipe, and the Federal University of Bahia, Museum of Zoology of the University of São Paulo and Museu Nacional do Rio de Janeiro. Twenty-one species were identified, belonging to 12 genera, 10 families, and 5 orders. Descriptions of species are provided. Three new occurrences were recorded for northeast Brazil: Astropectenalligator, Luidialudwigiscotti, and Mithrodiaclavigera. Highest diversities of Asteroidea were encountered for the states of Bahia (n = 14 spp), Paraíba (n = 12 spp) and Pernambuco (n = 9 spp). No species were recorded for the states of Maranhão and Sergipe. Sandy substrates and depths below 10 m were the least sampled areas over the continental shelf. Herein we provide a first panorama on the fauna of Asteroidea occurring in the northeast region of Brazil, hopefully to function as a basic reference for biodiversity studies in this poorly studied area.

Macrofauna bêntica do Parque Estadual Marinho de Areia Vermelha, Cabedelo, Paraíba, Brasil / Benthic macrofauna from Areia Vermelha Marine State Park, Cabedelo, Paraíba, Brazil

O Parque Estadual Marinho de Areia Vermelha (Cabedelo, Paraíba) foi criado pelo Governo do Estado da Paraíba com a finalidade de conservar a biodiversidade local e de regulamentar as atividades turísticas na área. Mais de uma década depois de sua criação, este estudo configura-se no primeiro inventário da macrofauna bêntica desta, que, até então, é a única unidade de conservação completamente marinha do litoral paraibano. Os espécimes estudados provêm de coletas realizadas entre fevereiro e abril de 2008. Durante os trabalhos de campo, os animais foram amostrados através de buscas intensivas nos diversos microhabitats do recife. Foram identificadas 102 espécies distribuídas entre os táxons Cnidaria (13 spp.), Mollusca (57 spp.), Crustacea (15 spp.), Echinodermata (15 spp.) e Ascidiacea (2 spp.). Do total de espécies registradas, 14 são novas ocorrências para o litoral do Estado da Paraíba, são elas: Pennaria disticha, Encope emarginata, Aplysia dactylomela, Arene brasiliana, Hipponix leptus, Olivella nivea, Mancinella deltoidea, Notocochlis isabelleana, Pilsbryspira albocincta, Pilsbryspira zebroides, Cymatium cynocephalum, Mactrellona alata, Mactrotoma fragilis e Mulinia cleryana. Três espécies ameaçadas de extinção de acordo com a legislação brasileira foram registradas: Millepora alcicornis (hidrocoral), Echinaster (Othilia) echinophorus e E. (O.) brasiliensis (estrelas-do-mar). Além disso, uma espécie de crustáceo que habita o Parque é considerada ameaçada de sobreexplotação, a lagosta Panulirus laevicauda. Entre os moluscos, destacam-se as espécies Voluta ebraea e Turbinella laevigata, endêmicas do nordeste brasileiro, que também ocorrem nos limites do Parque e que são particularmente vulneráveis devido à sua relevância no comércio ornamental marinho. Apesar de se tratar de um estudo piloto, a macrofauna bêntica registrada no Parque de Areia Vermelha revelou a presença de espécies de importância ecológica e econômica, tornando esta área de especial relevância para a conservação. No entanto, é importante que os órgãos gestores cumpram seu papel no sentido de promover a efetividade de manejo da unidade, que inclui a elaboração do zoneamento ecológico-econômico, do plano de manejo e da aplicação de medidas eficazes de fiscalização e monitoramento da área.

The Areia Vermelha Marine State Park (Cabedelo Municipality, Paraiba State, Brazil) was established by the State Government to preserve the local biodiversity and to regulate touristic activities in the area. More than a decade after the creation of this park, we provide the first inventory of the benthic macrofauna of this single exclusively marine conservation unit in our State. Specimens were collected between February and April of 2008. Animals were sampled through intensive searches in the diverse microhabitats available on the reefs. A total of 102 species were identified belonging to Cnidaria (13 spp.), Mollusca (57 spp.), Crustacea (15 spp.), Echinodermata (15 spp.), and Ascidiacea (2 spp.). Fourteen out of these represent new occurrences for the coast of Paraiba State: Pennaria disticha, Encope emarginata, Aplysia dactylomela, Arene brasiliana, Hipponix leptus, Olivella nivea, Mancinella deltoidea, Notocochlis isabelleana, Pilsbryspira albocincta, Pilsbryspira zebroides, Cymatium cynocephalum, Mactrellona alata, Mactrotoma fragilis, and Mulinia cleryana. Three are endangered species according to the Brazilian legislation: Millepora alcicornis (hydrozoan coral), Echinaster (Othilia) echinophorus, and E. (O.) brasiliensis (sea stars). One species, the lobster Panulirus laevicauda, is considered over-exploited. Among the mollusks, Voluta ebraea and Turbinella laevigata are endemic to northeast Brazil; they are particularly vulnerable in the area of the park because of their relevance to the commerce of marine ornamental species. Our pilot study has revealed the presence of species of particular ecological and economic importance, confirming the special relevance of the studied area for conservation. It now becomes imperative that management entities delineate an efficient plan for the conservation and monitoring of this important conservation unit.

Echinodermata da Praia do Cabo Branco, João Pessoa, Paraíba, Brasil / Echinodermata from Cabo Branco Beach, João Pessoa, Paraíba, Brazil

Este estudo retrata a fauna de equinodermos encontrada na Praia do Cabo Branco, João Pessoa, Paraíba, Brasil. Esta praia é formada por um terraço de abrasão marinha do tipo arenito-ferruginoso e está localizada no ponto mais oriental das Américas. Foram identificadas 32 espécies de equinodermos pertencentes a quatro classes (Asteroidea, Ophiuroidea, Echinoidea e Holothuroidea), distribuídas em 18 famílias e 24 gêneros. O número de táxons identificados corresponde a 9,7 por cento das espécies registradas para o litoral Brasileiro e mostra a significativa diversidade das espécies de Echinodermata encontrada nesta área. A classe Ophiuroidea foi a mais diversa com 13 espécies, seguida por Holothuroidea (10 spp.), Asteroidea (5 spp.) e Echinoidea (4 spp). Do total de espécies registradas, as seguintes são novas ocorrências para o litoral do Estado da Paraíba: Ophiocnida scabriuscula, Ophiomyxa flaccida, Ophiactis lymani, Ophionereis reticulata, Ophioderma januarii, Ophiophragmus brachyatis, Thyone cognita, T. suspecta, Ocnus suspectus, Phyllophorus occidentalis, P. communis, Lissothuria sp. Holothuria grisea, H. arenicola, Chiridota rotifera, Synaptula hydriformis, Echinaster nudus, Linckia guildingii, Lytechinus variegatus, Mellita quinquiesperforata e Leodia sexiesperforata.

The present study examined the fauna of echinoderms at Cabo Branco Beach, João Pessoa, state of Paraíba, Brazil. The beach was formed by the erosion of a sandstone terrace. Thirty two species from four echinoderm classes (Asteroidea, Ophiuroidea, Echinoidea and Holothuroidea) distributed among 18 families and 24 genera were identified. The number of identified taxons corresponds to 9.7 percent of the total number of species registered for the entire Brazilian coast, and demonstrates the significant diversity of echinoderm species in this area. Class Ophiuroidea was the most diverse, with 13 species, followed by Holothuroidea (10 spp.), Asteroidea (5 spp.) and Echinoidea (4 spp.). Among the recorded species, the following were new occurrences for the state of Paraíba: Ophiocnida scabriuscula, Ophiomyxa flaccida, Ophiactis lymani, Ophionereis reticulata, Ophioderma januarii, Ophiophragmus brachyatis, Thyone cognita, T. suspecta, Ocnus suspectus, Phyllophorus occidentalis, P. communis, Lissothuria sp., Holothuria grisea, Holothuria arenicola, Chiridota rotifera, Synaptula hydriformis, Echinaster nudus, Linckia guildingii, Lytechinus variegatus, Mellita quinquiesperforata and Leodia sexiesperforata.