Pablo Guilherme

• Doctor of Philosophy
• Professor (Assistant) at Universidade Estadual do Paraná, Paranaguá, Brazil

The movement of ships between continents is one of the leading causes of the increased bioinvasion of benthic organisms, surpassing the geographical barriers that prevent the natural dispersal of species. Artificial floating structures, such as buoys, can also serve as secondary dispersers in the introduction of exotic species on a regional scale....

A década dos oceanos surgiu com o objetivo de conscientizar a população sobre a importância do oceano e a nossa relação com ele. Considerando as peculiaridades da cidade de Paranaguá (PR), o objetivo do estudo foi conhecer a percepção ambiental dos alunos do ensino básico sobre o manguezal, através da aplicação de questionários. Observou-se que os...

One of the goals of the decade for the United Nations (UN) encompasses the prevention and conservation of the oceans and seas. In this way, the Data Symbion project was initially proposed, aiming at organizing and storing data related to marine biomes. With that in mind, this article presents the restructuring of this project, which now considersth...

This study presents the first record of the cordiform echinoid Plagiobrissus grandis (Gmelin, 1791) (Echinoidea: Spatangoida: Brissidae) in Paraná’s shallow inner shelf, in addition to a brief description of its location, body measurements, sex determination, and reproductive status. Two specimens were recorded between 2015 (bycatch by artisanal fi...

The brittle stars of the family Ophiocomidae inhabit shallow waters and coral reefs of tropical regions. The species of Ophiocoma are difficult to identify due to high morphological variation, especially when different stages of development are observed. Here, based on morphological analyses, two Brazilian morphotypes of Ophiocoma were studied and...

A revista de divulgação científica do Grupo de Malacologia do Paraná ISSN 2675-7753 AGARONIA EDITORIAL Com a presente edição, a Revista Agaronia completa dois anos de publicações trimestrais, inin-terruptas. Mantendo sua missão original, que é a di-vulgação da malacologia do Paraná. Ao longo de suas 9 edições, a Agaronia publi-cou notícias de event...

El estudio analizó las relaciones lineales entre diámetro (D), anchura (L) y altura (A) del caparazón y linterna de Aristóteles (LA), participación de LA y gónadas y tamaño del ovocito en ejemplares adultos de Echinometra lucunter entre las latitudes 12° a 27° sobre ambientes recipados, bancos de arenisca (beachrock) y otros afloramientos rocosos....

Este é um texto divertido com algumas curiosidades sobre moluscos e suas representações medievais, publicado na Revista AGARONIA do Grupo de Malacologia do Paraná ISSN 2675-7753. AGARONIA EDITORIAL Chegamos ao primeiro número do terceiro ano da revista Agaronia. Ao longo desse período, a revista tem fortalecido parcerias e recebido um número cada...

Chegamos ao primeiro número do terceiro ano da revista Agaronia. Ao longo desse período, a revista tem fortalecido parcerias e recebido um número cada vez maior de contribuições, o que demonstra que está se consolidando como um importante veículo de divulgação científica na área de Malacologia, motivo de orgulho para os seus organizadores.

The Indo-Pacific edible swimming crab Scylla serrata is reported here for the fifth time from the western Atlantic including a failed attempt of introduction to Florida for aquaculture purposes in the years 1960's. The species had been recorded from Brazil in the early 1980's and in 2011 and from the Caribbean coast of Colombia in 2013. The capture...

The genera Ophiophragmus and Amphiodia are amphiurids that are considered taxonomically difficult due to their great resemblance, few diagnostic characters and synonymy problems. Our aim is to redescribe the species using scanning electron microscopy and morphometry of diagnostic structures, and to provide new information for the identification of...

In general, tropical/subtropical populations of marine invertebrates reproduce continuously. Nevertheless, nuances in reproductive investment can be detected when reproductive effort is observed through quantitative analysis applied to the traditional histological methods. The aim of this study was to detect such nuances for the Perna perna species...

We re-describe and confirm the validity of Ophiothrix trindadensis Tommasi, 1970 (Echinodermata: Ophiuroidea). This is a native species from Brazil, however it lacked a type series deposited in scientific collections. The recognition of O. trindadensis was made possible using integrative taxonomy applied to many specimens from the type locality (Tr...

Abbreviations and definitions of the 17 morphological characters used for the morphometric analysis. (DOCX)

Four main sides of the vertebrae ossicle of Ophiothrix. Proximal view (pv), distal view (div), dorsal view (dov), ventral view (vv). CS1 MZUSP 1426: (A) pv; (B) div; (C) dov; (D) vv. CS2 MZUSP 1425: (E) pv; (F) div; (G) dov; (H) vv. CS3 ZUEC OPH 2811: (I) pv; (J) div; (K) dov; (L) vv. CS4 ZUEC OPH 2783: (M) pv; (N) div; (O) dov; (P) vv. d: dorsal;...

Study sites and data collection. Triangles represent the samples that were collected during the present study: Trindade and Martin Vaz Oceanic Archipelago, Araçá Bay, and the Estuarine Complex of Paranaguá. Circles represent the location of samples used in our comparisons: São Pedro and São Paulo Archipelago (molecular data), South Carolina (morpho...

Ophiothrix trindadensis–color patterns in some preserved specimens. (A) ZUEC OPH 2907, dd = 5.8 mm. (B) MZUSP 1661, dd = 5.3 mm. (C) MZUSP 1687, dd = 3,1 mm. (D) MZUSP 1450, dd = 6.1 mm. (E) MZUSP 1686 dd = 4.2 mm. (F) ZUEC OPH 2883, dd = 8.5 mm. Stereomicroscope photos, scale bar equal to 1 mm. (TIF)

Study sites that brittle stars were collected (TMV, AB, ECP) and compared (SPSPA, TX-US, SC-US). AB, Araçá Bay; ECP, Estuarine Complex of Paranaguá; SC-US, South Carolina, United States; SPSPA, São Pedro and São Paulo Islands; TMV, Trindade and Martin Vaz Oceanic Archipelago; TX-US, Texas, United States; USNM, United States National Museum;–absent....

Illustrations of the 17 morphological characters used for the morphometric analysis. The abbreviations and definitions are described in S2 Table. (TIF)

Arm ossicles of Ophiothrix CSs. dorsal (dap), ventral (vap), and lateral arm plates (lap). CS1 MZUSP 1426: (A) dap; (B) vap; (C,D) lap. CS2 MZUSP 1425: (E) dap; (F) vap; (G, H) lap. CS3 ZUEC OPH 2811: (I) dap; (J) vap; (K,L) lap. CS4 ZUEC OPH 2783: (M) dap; (N) vap; (O, P) lap. d: dorsal; ddi: dorso-distal; di: distal; dp: dorso-proximal; p: proxim...

Phylogenetic relationships inferred from the 16S (left) and COI (right) matrices by Bayesian analysis (MrBayes analysis). Numbers above and below branches represent the support values for BI (posterior probabilities) and MP (bootstrap values in %), respectively. The MP tree was not represented. Branches are identified by individual codes and their...

Cladogram inferred from the Maximum Likelihood of 16S and COI sequences (concatenated). The numbers in nodes represent the support values (bootstrap). Branches are identified by individual codes (S3 Table) and their localities: AB: Araçá Bay, São Paulo, Brazil; ECP: Estuarine Complex of Paranaguá, Paraná, Brazil; EUR: Europe; SPSPA: São Pedro and S...

Species delimitation hypothesis obtained in the maximum likelihood solution of the Bayesian Poisson Tree Processes (bPTP) analysis. Branches in red connect haplotypes included in same species, in blue distinct species. Branches are identified by individual codes (S3 Table) and their localities: AB: Araçá Bay, São Paulo, Brazil; ECP: Estuarine Compl...

Specimens used in the phylogenetic analyses with their locality, museums vouchers, and GenBank accession numbers for DNA sequences. AB, Araçá Bay, Brazil; AM, Australian Museum; ECP, Estuarine Complex of Paranaguá, Brazil; EUR, Europe; FMC, French Mediterranean Coast; IC, individual codes in the present study; NMRJ, National Museum of Rio de Janeir...

p>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...

Morphometry of Ophiothrix using PERMANOVA and LDA (Linear Discriminant)

Habitat classification and mapping underpins most conservation and management tools, because habitats are often used as a surrogate for all biodiversity. Some habitat boundaries are easy to delineate; however, sandy shores are ecotones or ecoclines given their dynamic interface between the marine and the terrestrial realms. Although methods for map...

The detailed study of arm ossicles, particularly the lateral arm plates, is providing valuable information in the elucidation of ophiuroid taxonomy. The present study describes in detail 16 species of brittle stars from Araçá Bay, Brazil. This information is used to construct the first interactive electronic key, providing a valuable resource for a...

We built an interactive identification key to provide a user-friendly tool for the Ophiuroidea (brittle stars) species using Xper³ (www.xper3.fr) which is a knowledge platform dedicated to taxonomic description and identification. After the observation of 745 specimens, representing 16 species, a total of 37 qualitative characters were described an...

Species distribution in their habitat may be heterogeneous due to the tolerance to environmental features. Such features may be abiotic factors, biotic relations or the incompatibility of morphological characters with the habitat characteristics. To identify whether the morphological traits can determine the distribution of the ophiuroids inhabitin...

A análise granulométrica de sedimentos arenosos pode ser realizada através de diferentes técnicas como o peneiramento, a decantação, a difração a laser ou ainda a análise de imagens digitais. A técnica de análise de imagens digital vem sendo difundida por ser considerada a de mais baixo custo, contudo, a maioria dos trabalhos que descrevem o método...

Different methodologies were used to determinate the occupation rate in ghost crab burrows (e.g. flooding, smudging, traps, excavating). All of these methods destroyed the environment or clearly perturbed the behavior of the individuals, with the consequent misestimating of the rate. However, the most obvious way to determine the presence of a crab...

Sandy coast are complex ecotones that can be divided in subenvironments with distinct physical attributes. The midlittoral, where damp sediments are daily reworked by tides, the drift zone, with a continuous deposit of wrack, the not vegetated supralittoral, a dry sediment region occasionally reached by high tide, the incipient foredune, inhabited...

This work present a comparison between data collected using the methodology proposed by Brazilian Network for Monitoring Sandy Beach Biota (ReBentos) (March and September 2013, 2014, 2015), with a monthly dataset published by Souza and Gianuca (1995) at the same wave-dominated beach in 1987/1988. Sampling methods were similar among surveys, with sa...

Encope emarginata (Leske, 1778) are frequently observed aggregated in the sediment and variations in its spatial patterns of distribution may be a function of changes on local hydrodynamic regime. Tiny crabs, Dissodactylus crinitichelis Moreira, 1901 living associate with these irregular echinoids. It is unclear whether the presence of crabs can af...

The particle size analysis of sandy sediments can be performed using different techniques such as sieving, decantation, laser diffraction or digital image analysis. The digital image analysis may be considered a fast and lower cost technic, and can be practice in any place with a scanner and computer. However, most studies describe that method use...

Washouts have an important function in backshore zone drainage and remobilization of sediments for littoral transport. It is known that they can change beach morphology along its course, but their effects on the macrofauna community still represent a gap in knowledge of sandy beach ecology. Based on previous studies developed in larger systems, suc...

The sea star Astropecten marginatus has a neotropical distribution and is a highly abundant and frequent species in shrimp trawling by-catchin many places along the Brazilian coast. This has caused its threat to extinction and in addition, its bio-ecological aspects are poorly known. Thus, the main objective of this study was to analyze the seasona...

Nesse trabalho foram identificados os pontos de venda e as espécies comercializadas como iscas vivas para a pesca recreativa no litoral do Paraná, sul do Brasil. Foram registrados cinco pontos de venda e seis espécies, sendo dois peixes (Poecilia vivipara e Dormitator maculatus) e quatro crustáceos (Macrobrachium acanthurus, M. olfersii, Callichiru...

La estrella de mar Astropecten marginatus presenta una distribución neotropical y debido a su abundancia es frecuente encontrarla como captura incidental durante actividades de pesca de arrastre; actividad por la cual se encuentra amenazada en muchos lugares a lo largo de la costa brasileña. En este estudio se analizaron las variaciones estacionale...

The crabs of the genus Ocypode are recognized as a key of the ecosystem sandy beaches to participate in the flow of energy between the ocean, the beach and dune. The main threat is suffering the loss or fragmentation of habitat caused by human disturbance and by rising sea levels due to climate change. The present study aimed to investigate the inf...

O caranguejo Ocypode quadrata (Crustacea, Decapoda), habita a maior parte das praias arenosas do Brasil, onde constrói suas tocas na região entremarés e na parte superior da praia, se estendendo eventualmente até as dunas (Melo, 1996). A segregação espacial é comum, com a predominância de indivíduos jovens na região do mediolitoral e supralitoral,...

Nos últimos anos, o caranguejo Ocypode quadrata vêm sendo utilizado como indicadores de impacto antrópico em praias arenosas, embora pouco se conheça sobre o papel das dunas e da vegetação na sua distribuição e abundância. Com o objetivo de estudar esta influencia, foram realizadas amostragens em dois setores de um mesmo arco praial, porém com fisi...

A recent forecast for Brazilian southeast coastal region appoints to a increase in rainfall by threefold for the next 60 years. This increase could interfere in the sandy beach washouts volume and frequency, given that this washouts are usually made up from combination of groundwater and rainwater collected in the swamp areas behind the foredunes....

O asteróide Astropecten marginatus pertencente à Ordem Paxillosida, é um organismo epibentônico ou cavador de ambientes costeiros onde desenvolve intenso hábito forrageador. O objetivo desse estudo foi descrever a dieta alimentar deste equinodermo em fundos inconsolidados rasos no litoral do Estado do Paraná. Um total de 994 indivíduos foram obtido...

Asteróides da Ordem Paxilloidea habitam uma grande variedade de habitats sendo ecologicamente importantes nas comunidades bênticas de fundos inconsolidados rasos. No litoral paranaense a espécie Astropecten marginatus apresenta expressiva dominância numérica dentre a equinodermatofauna acompanhante da pesca do camarão “sete-barbas” Xiphopenaeus kro...

RESUMO No período entre agosto/2004 e julho/2005 a estrutura populacional e o crescimento Astropecten marginatus foram analisados a partir de amostras obtidas em diferentes setores/profundidades da região costeira do estado. A espécie apresentou as maiores abundâncias em trechos com menor influência das desembocaduras das baías de Paranaguá e Guara...