The occurrence of the invasive foraminifera Trochammina hadai Uchio in Flamengo Inlet, Ubatuba, São Paulo State, Brazil

Micropaleontology
By: , and 

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Abstract

The agglutinated foraminifera Trochammina hadai Uchio (1962), a dominant species in Japan, first appeared as an invasive species in San Francisco Bay, US, in 1983. Trochammina hadai's first appearance in the Brazilian coastal waters of Flamengo Inlet, Ubatuba, Sao Paulo State, is recorded nearly three decades later, in two of thirty-four sediment samples collected in the western portion known as "Saco do Ribeira" in 2010. By 2014 and 2015, the species was found alive in 78% of the samples with relative abundance reaching 18%. We suggest this recent colonization was most likely the result of an introduction by anchor mud on commercial fishing boats and recreational vessels or from fishing bait, and the species' proliferation due to its suitability to live in anthropogenically-induced stressed environmental conditions of the inlet that has affected the ecological dominance of this benthic community.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title The occurrence of the invasive foraminifera Trochammina hadai Uchio in Flamengo Inlet, Ubatuba, São Paulo State, Brazil
Series title Micropaleontology
Volume 64
Issue 5-6
Year Published 2018
Language English
Publisher Micropaleontology Press
Contributing office(s) Pacific Coastal and Marine Science Center
Description 12 p.
First page 391
Last page 402
Country Brazil
State Sao Paulo