Introduced and cryptogenic species and their management in Paranaguá Bay, Brazil

Neves, Carolina Somaio; Rocha, Rosana Moreira da

doi:10.1590/s1516-89132008000300025

Cited by 41 publications

(32 citation statements)

References 38 publications

(36 reference statements)

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“…The introduced species found in this study are similar to those found in an estuary with an international port (ROCHA & KREMER 2005, NEVES et al 2007, NEVES & ROCHA 2008, CANGUSSU et al 2010. These patterns of introduction suggest the following: 1) Ecological processes in the inner shelf off the state of Paraná are influenced by estuaries.…”

Section: Discussionsupporting

confidence: 83%

“…Here, the port of Paranaguá (25°30'S, 48º30'W), one of Brazil's largest international ports, is an important potential source of species introductions (NEVES et al 2007). Previous studies in Paranaguá Bay (where the port is located) found colonization by invasive, non-native and cryptogenic species in fixed and floating substrates made of concrete, fiberglass, granite and polyethylene (ROCHA & KREMER 2005, NEVES et al 2007, NEVES & ROCHA 2008, CANGUSSU et al 2010. This result was somewhat surprising due to the wide variation in salinity of these waters due to riverine input.…”

mentioning

confidence: 94%

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Detection of introduced sessile species on the near shore continental shelf in southern Brazil

Bumbeer¹,

Rocha²

2012

Zoologia (Curitiba)

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ABSTRACT. Invasion by marine species, often considered a grave threat to marine ecosystems, occurs throughout the world as a consequence of many anthropogenic activities. In coastal Paraná, many factors including shipping, aquaculture and the use of artificial substrates provide suitable environments for the establishment and rapid spread of introduced marine species. To better understand this process, the encrusting community was studied on polyethylene plates (n = 120, 10 x 10 cm) that were placed seasonally at fixed locations on the inner continental shelf to detect non-native species. Of the 62 taxa found, 40 were identified to species, 14 of which were native, 9 introduced and 17 cryptogenic.

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Section: Discussionsupporting

confidence: 83%

mentioning

confidence: 94%

Detection of introduced sessile species on the near shore continental shelf in southern Brazil

Bumbeer¹,

Rocha²

2012

Zoologia (Curitiba)

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“…In Brazil, it is now found from Santa Catarina in the south to Pernambuco in the northeast, though less commonly north of Rio de Janeiro (FARRAPEIRA, 2007). It was not found in 2004 in samples taken from floats, concrete columns or underneath boats (NEVES et al, 2007;NEVES and ROCHA, 2008), which may be due to the timing of those collections (April, when it does not reproduce). A contemporaneous study in the bay found S. plicata only on Mel Island, growing on the shells of a small mussel culture and on an old pier (ROCHA and KREMER, 2005).…”

Section: Discussionmentioning

confidence: 95%

“…This included four introduced species: the hydrozoan G. franciscana, the polychate Polydora cornuta and the barnacles A. reticulatus and S. amaryllis (NEVES et al, 2007;NEVES and ROCHA, 2008). With the exception of the polychaete, all occurred on granite plates with frequencies of 25%, 76% and 20%, respectively (Table 2).…”

Section: Discussionmentioning

confidence: 99%

“…Historical data regarding encrusting species in the region are relatively recent, with the oldest study of fouling communities dating from 1987-88 (CORREIA andSILVA, 1990). We compared our list of species with those of the latter study and with those of NEVES et al (2007) andROCHA (2008) to better understand the recent invasion history of the Bay and evaluate the ability of each species to colonize different types of substrates.…”

Section: Plate Analysismentioning

confidence: 99%

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Substrate type as a selective tool against colonization by non-native sessile invertebrates

et al. 2010

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A B S T R A C TDifferent substrates of varying composition, color, texture and orientation may selectively influence recruitment of sessile invertebrates and thereby influence the resultant community. Thus substrates may act as a barrier to the establishment of non-indigenous species (NIS). In southern Brazil, granite is the main rock forming natural rocky walls that are available for encrusting organisms. In this study we tested whether granite selectively influences recruitment and impedes colonization by introduced and cryptogenic species that are already established on artificial substrates within the region. Plates of rough cut granite and of polyethylene were made available each month under a pier at a yacht club in Paranaguá Bay. A community is already established on concrete columns and fiber glass floats on the piers. After one, two and twelve months, the faunal composition of the plates was compared between the two treatments and other artificial substrates. Granite was recruited by all the seven introduced species found in the Bay and by 18 of 26 cryptogenic species and therefore is ineffective as a barrier to NIS colonization. R E S U M OSubstratos de diferentes materiais, cores, texturas e orientação podem influenciar seletivamente no recrutamento de invertebrados sésseis e, assim, influenciar a comunidade resultante. Deste modo, o substrato pode funcionar como barreira contra o estabelecimento de espécies não nativas (NIS, na sigla em inglês). No sul do Brasil, o granito é a principal rocha formadora de costões rochosos naturais disponíveis para organismos incrustantes. Nesta investigação, nós testamos se o granito seleciona o recrutamento de espécies e se poderia, assim, impedir a colonização de espécies introduzidas ou criptogênicas já estabelecidas em substratos artificiais na região. Placas não polidas de granito e de polietileno foram submersas a cada mês em um píer de um iate clube na Baía de Paranaguá. Há uma comunidade já estabelecida sobre colunas de concreto e sobre flutuadores de fibra de vidro presentes no iate clube. Depois de um, dois e doze meses, as espécies presentes nas placas de diferentes materiais foram comparadas entre si e também com outros substratos. O granito foi colonizado por todas as sete espécies introduzidas encontradas na região, e por 18 das 26 espécies criptogênicas, sendo então ineficaz como barreira contra a colonização de NIS.

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Alien species in aquatic environments: a selective comparison of coastal and inland waters in tropical and temperate latitudes

Tricarico

Junqueira

Dudgeon

2016

Aquatic Conservation

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ABSTRACT1. Biological invasions have had severe impacts on ecosystems globally, particularly affecting freshwater habitats. In the aquatic realm, marine environments have received less attention from researchers than their freshwater counterparts, and comparisons of the relative susceptibility of coastal and inland waters to alien species and their consequential impacts are lacking.2. The main aim of this review is to assess the 'knowns and unknowns' for alien species in aquatic habitats, evaluating the possible differences and similarities in biological invasions between freshwater and marine (coastal) environments. Three study areas with different climates and histories of bioinvasion were selected for comparison: temperate Europe, tropical Asian Hong Kong, and Neotropical Brazil.3. Although there were differences in spatial scale and availability of data for the three areas, fresh waters seemed to be more susceptible to invasion -and experienced more impacts -than coastal habitats, at least in Hong Kong and partly in Europe. Despite information about alien species in aquatic environments having increased in recent years, regional inventories remain incomplete, especially in the tropics where rigorous studies of the impacts of invasive species are generally lacking.4. More systematic effort is needed to develop up-to-date national and regional inventories of invaders, especially in the seas and particularly in the more biodiverse tropics, where the conservation gains from preventing alien invasions could be substantially greater than in other regions. Greater efforts are also required to increase public awareness of the need to prevent the establishment of potentially invasive species.

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Introduced and cryptogenic species and their management in Paranaguá Bay, Brazil

Abstract: The aim of this work was to identify the introduced and cryptogenic species in encrusting and

Cited by 41 publications

References 38 publications

Detection of introduced sessile species on the near shore continental shelf in southern Brazil

Detection of introduced sessile species on the near shore continental shelf in southern Brazil

Substrate type as a selective tool against colonization by non-native sessile invertebrates

Alien species in aquatic environments: a selective comparison of coastal and inland waters in tropical and temperate latitudes

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