Differences in the distribution and abundance of Teredinidae (Mollusca: Bivalvia) along the coast of Rio de Janeiro state, Brazil

Abstract

Teredinidae are wood-boring mollusks found in marine and estuarine regions. Evaluation of the distribution and abundance of Teredinidae is a very important task, as the impact of the destruction of wood in man-made structures is still underestimated, mainly in tropical regions. It is also know that temperature and salinity are key factors affecting the abundance and activity of Teredinidae due to their effects on the physiological responses of Teredinidae. The aim of this study was to evaluate the distribution and abundance of Teredinidae along the Rio de Janeiro coast according to temperature range and pattern. Artificial pine collectors were used and remained immersed for three months in four regions at 14 sites. We recorded seven species of Teredinidae, identified according to their pallets. Ilha Grande Bay was the region with the highest density and species richness, and the region with the lowest was Guanabara Bay. One gradient of abundance related to temperature was found. The most abundant species were Lyrodus floridanus and Teredo furcifera. Besides temperature, wood availability among regions was another important factor. For the first time, we recorded the occurrence of Bankia destructa on the Rio de Janeiro coast, but this record does not indicate any species introduction or expanding distribution range.

Brocas Marinhas E a Biodeterioração Da Madeira No Brasil: Uma Revisão Sistemática

“…De forma geral, nos estudos que foram avaliados nesta revisão, a madeira funciona apenas como uma isca para coletar os organismos xilófagos de interesse. Foi observado que o tipo de coletor varia entre painéis de madeira (MALDONATO;SKINNER, 2016;SILVA et al, 1988;BARRETO et al, 2000) e corpos de prova de madeira sólida (LEONEL et al, 2006;ANDRADE et al, 2013). Entretanto, quanto à madeira sólida, foi mais comum o aproveitamento de troncos pré-existentes de espécies do mangue (MORAES et al, 2015;TRINDADE-SILVA et al, 2009;SANTOS FILHO et al, 2008;ARAUJO et al, 1995;JUNQUEIRA et al, 1989).…”

“…Por outro lado, no Brasil, as pesquisas desenvolvidas com xilófagos marinhos têm um foco maior no viés ecológico destes organismos (JUNQUEIRA et al, 1989;NARCHI, 1997). Nestes trabalhos, a madeira é utilizada apenas como substrato para a captura destes animais, seja na sua forma sólida (SANTOS FILHO et al, 2008;ANDRADE et al, 2013) ou como painéis reconstituídos (BARRETO et al, 2000;MALDONADO;SKINNER, 2016).…”

Identification of Tambelo (Bactronophorus thoracites) in Wamesa Waters, Manokwari, West Papua, Indonesia

“…as a substitute for side dishes because it tastes sweet and has a very high protein content when compared to other types of mangrove forests. They are believed to be able to treat several diseases, whether consumed raw or cooked (Leiwakabessy 2015;Maldonado and Skinner 2016). Local people refer to this shipworm as tambelo (Leiwakabessy 2015).…”