On the occurrence and ecology of Glaucus atlanticus Forster, 1777 (Mollusca: Nudibranchia) along the Southwestern Atlantic coast.

Authors:
Erik Muxagata
Erik Muxagata
Laboratório de Zooplâncton

An Acad Bras Cienc 2019 8;91(1):e20180154. Epub 2019 Apr 8.

Laboratório de Ecologia do Zooplâncton, Instituto de Oceanografia, Universidade Federal do Rio Grande/FURG, Av. Itália, Km 8, Campus Carreiros, 96203-900, Rio Grande, RS, Brazil.

Unlike the majority of the nudibranchs, Glaucidae lives adrift at the sea surface within Tropical and Subtropical ocean basins, feeding on cnidarians or using them to attach their egg strings as a reproductive strategy. The latitudinal distribution of Glaucus atlanticus throughout the Brazilian Province is influenced by the Brazil current and, in its austral limit, by seasonal shifts in the Subtropical Convergence Zone (especially under the influence of ENSO El Niño events). Once over the shelf, seasonal wind patterns and meteorological events can force a passive displacement of the species towards the shore. Such onshore displacements may result on strandings of Glaucus spp. and other pleustonic species of the "blue plankton" community, like already reported worldwide and recently at the Southern Brazilian / Uruguayan coasts. Although fascinating, Glaucus spp. should be considered harmful to humans and people should thus avoid direct contact; if this accidentally occurs, short-term treatments can be implemented besides looking for medical attention. The current geographical distribution of Glaucus atlanticus over the Brazilian coast reveals some inaccuracy and gaps; the present study not only revises the ecology of this species but also evidences the occurrence of summer strandings and its austral distribution into subtropical shores.

Download full-text PDF

Source
http://dx.doi.org/10.1590/0001-3765201920180154DOI Listing
April 2019

Publication Analysis

Top Keywords

glaucus atlanticus
12
atlanticus brazilian
8
distribution glaucus
8
glaucus spp
8
glaucus
5
result strandings
4
strandings glaucus
4
displacements result
4
species shore
4
shore onshore
4
onshore displacements
4
pleustonic species
4
reported worldwide
4
worldwide southern
4
southern brazilian
4
community reported
4
plankton" community
4
displacement species
4
species "blue
4
"blue plankton"
4

References

(Supplied by CrossRef)
Some pelagic molluscs and associated animals in South-Eastern Australian waters
BENNETT I et al.
J Malacol Soc Aust 1966
Species of Decapod Crustaceans and their distribution in the American marine zoogeographic provinces
BOSCHI EE et al.
Rev Invest Des Pesq 2000
Shells and bytes: mollusks in the 16-bit era
CAVALLARI DC et al.
J Geek Stud 2015
A new species of Hypselodoris and a redescription of Hypselodoris picta lajensis (Nudibranchia: Chromodorididae) from Brazil
DA COSTA S et al.
Veliger 2010

EDMONDS C et al.
1995
Catálogo de los moluscos marinos del Uruguay. Parte X. Revisión actualizada de los moluscos marinos del Uruguay con descripción de las especies agregadas. Sección II - Gastropoda y Cephalopoda
FIGUEIRAS A et al.
Com Soc Malac Uruguay 1980

Similar Publications