Otto M.P. Oliveira

Epiphytic hydroids (Hydrozoa: Anthoathecata and Leptothecata) of the World

Hydroids are an important component of marine epiphytic communities worldwide. We compiled data from several faunistic, taxonomic, and ecologic studies to prepare a list of 200 morphotypes (46 Anthoathecates and 154 Leptothecates) and their respective phytal substrata. The goal of this checklist is to support future biogeographical and ecological inferences concerning this important biota.

Timeless standards for species delimitation

Recently a new species of bombyliid fly, Marleyimyia xylocopae, was described by Marshall & Evenhuis (2015) based on two photographs taken during fieldwork in the Republic of South Africa. This species has no preserved holotype. The paper generated some buzz, especially among dipterists, because in most cases photographs taken in the field provide insufficient information for properly diagnosing and documenting species of Diptera.

Chave de identificação dos Ctenophora da costa brasileira

Abstract Oliveira, O.M.P., Mianzan, H., Migotto, A.E. & Marques, A.C. Identifi cation key for the ctenophores from Brazilian coast. Biota Neotrop. Sep/Dez 2007 vol. 7, no. 3 http://www.biotaneotropica.org.br/v7n3/pt/abstract?identifi cation-key+bn03507032007. ISSN 1676-0603.Although ctenophores are abundant and ecologically important in the marine environment, they are poorly known in the Brazilian coast. The present study is a taxonomic key for the ctenophores from the Brazilian coast. It aims to help students and non-specialist researchers with the identifi cation of those organisms. Collecting, preserving and photographing methods are described. Characters that distinguish the thirteen species registered in Brazilian marine territories are presented. Keywords: Ctenophora, comb-jelly, zooplankton, gelatinous plankton, pelagial, benthos, Brazil. Resumo Oliveira, O.M.P., Mianzan, H., Migotto, A.E. & Marques, A.C. Chave de identifi cacao dos Ctenophora da costa brasileira. Biota Neotrop.

Morphometric patterns of two fouling Eudendrium spp. (Hydrozoa, Anthomedusae, Eudendriidae) from São Sebastião (SP, SE Brazil)

Thirty colonies of Eudendrium carneum and 100 colonies of E. glomeratum, collected on recruitment panels in Sao Sebastiao (SP, SE Brazil), were studied concerning morphometrical parameters and compared with morphometrical data available from other locations. The results show that E. carneum from Brazil has a relatively smaller morphometric variation than colonies of E. glomeratum for Brazil and other areas. Both morphological and speciation causes are suggested as possible explanations for the high variation of E. glomeratum.

Faunistic survey of sandstone caves from Altinópolis region, São Paulo State, Brazil

A fauna de oito cavernas areniticas da regiao de Altinopolis (provincia espeleologica arenitica da Serra Geral, Estado de Sao Paulo, Sudeste do Brasil) foi amostrada. Nossos resultados aumentaram o conhecimento faunistico previo da regiao, com o registro de 15 novas ocorrencias para cavernas brasileiras e 26 para cavernas brasileiras em arenito. A fauna e caracterizada por um grande numero de detritivoros/carnivoros tais como grilos e baratas, diversos predadores tais como aranhas e heteropteros no guano de morcego.

Chave de identificação dos hidróides (Cnidaria, Hydrozoa) epifíticos do Canal de São Sebastião (SE, Brasil)

The present study is a taxonomic key for epiphytic hydroids from the Sao Sebastiao channel. It aims to help students and non-specialist researchers with the identification of those hydrozoans associated with vegetal substrata. Methods for hydroid preservation and slides preparation are described. Characters that distinguish the 36 species are presented.

Population biology of Eudendrium caraiuru (Cnidaria, Anthoathecata, Eudendriidae) from São Sebastião Channel, Southeastern Brazil

The ecology of Eudendrium spp. from the Brazilian coast is poorly known, although it already proved to be useful and important as a tool to solve some taxonomical problems of the genus. The seasonality and reproduction patterns of a population of Eudendrium caraiuru Marques & Oliveira, 2003 were studied. Data were sampled from test panels immersed in the water off Cabelo Gordo de Dentro beach, in Sao Sebastiao Channel, Southeastern Brazil, from July 1999 to July 2000, every three months. Eudendrium caraiuru was active throughout the study period. Reproductive peaks of the species were regulated by cold and low-salinity water, although part of the population always bore mature gonophores. In addition to morphological differences, ecological differences between E. caraiuru and its similar species, E. glomeratum Picard, 1951, especially from well known populations of the Mediterranean Sea, corroborated that these species are diverse lineages of a unique ancestor.