Vol. 59, 2020
of Bvalve Mollusks Associated with Macroalgae on the Continental Shelf
of the States of Alagoas, Sergipe and Bahia, Northeastern Brazil
Lucas Santos1, J. Weverton S. Souza1,2, Silvio Lima3,4, and Carmen Guimarães1,*
University of Sergipe, Center for Biological and Health Sciences,
Department of Biology, Coastal Ecosystems Laboratory, Avenida Marechal
Rondon, Rosa Elze, São Cristóvão 49100-000, Sergipe, Brazil. E-mail:
2State University of
Campinas, Institute of Biology, Post-Graduate Program in Ecology,
Avenida Bertrand Russel, Cidade Universitária Zeferino Vaz - Barão
Geraldo 13083-865, Campinas, São Paulo, Brazil. E-mail:
3Federal University of Campina Grande, Teacher
Training Center, Academic Unit of Exact and Natural Sciences, Rua
Sérgio Moreira de Figueiredo, Casas Populares, Cajazeiras 58900-000,
Paraíba, Brazil. E-mail: email@example.com
4Federal University of Paraíba - Campus I, Exact and
Natural Sciences Center, Department of Systematics and Ecology,
Post-Graduate Program in Biological Sciences (Zoology), Cidade
Universitária, João Pessoa 58051-900, Paraíba, Brazil. *Correspondence:
E-mail: firstname.lastname@example.org. Tel: +55 (79) 31946695.
Received 7 May 2020 / Accepted 6 September 2020
Communicated by Yoko Nozawa
phytal environment is a complex system involving the association of
marine organisms and macroalgae. In this paper, we investigate the
diversity of bivalves associated with macroalgae on the continental
shelf between the states of Alagoas and Bahia, including Sergipe, in
northeastern Brazil. Macroalgae and associated fauna were collected
during two sampling campaigns under the MARSEAL project (February and
July 2011 [dry and rainy seasons, respectively]), covering 24 stations
and three isobaths (10, 25 and 50 m). The following ecological
descriptors were calculated: abundance (N), richness (S), diversity
(H') and evenness (J). A total of 1384 individuals from 20 families, 28
genera and 44 species were obtained. Arcidae was the most abundant
group, followed by the families Pteriidae and Mytilidae. The most
abundant species were Arca zebra, Anadara sp. 1 and Pinctada imbricata,
representing 71% of total abundance. The families Arcidae, Corbulidae
and Mytilidae were considered constant, as they occurred in more than
50% of the samples. Higher abundance was recorded in the rainy season.
No seasonal differences were found regarding S, H' or J. Richness
increased with the increase in depth, whereas the other indices (N, H'
and J) were not influenced by bathymetry. This reveals that the 50 m
isobath has greater support capacity, housing richer, more diverse
fauna. The richness and composition of bivalves studied here expands
information on mollusk biodiversity associated with the phytal
environment on the continental shelf off northeastern Brazil.
Key words: Mollusca, Bivalvia, Phytal, Marine macrophytes, Coastal zone.
Santos L, Souza JWS, Lima S, Guimarães C. 2020. Diversity of bivalve
mollusks associated with macroalgae on the continental shelf of the
states of Alagoas, Sergipe and Bahia, northeastern Brazil. Zool Stud 59:0pp. doi:-.