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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

An attempt to extend the Habitat Harshness Hypothesis to tidal flats: A case study of Anomalocardia brasiliana (Bivalvia: Veneridae) reproductive biology

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Autor(es):
Corte, Guilherme Nascimento [1] ; Yokoyama, Leonardo Querobim [2] ; Amaral, A. Cecilia Z. [3]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Inst Biol, Dept Biol Anim, Programa Posgrad Ecol, Lab Bentos Marinho, BR-13083862 Campinas, SP - Brazil
[2] Univ Sao Paulo, Inst Oceanog, Dept Oceanog Biol, BR-05508900 Sao Paulo - Brazil
[3] Univ Estadual Campinas, Inst Biol, Dept Biol Anim, Lab Bentos Marinho, BR-13083862 Campinas, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: ESTUARINE COASTAL AND SHELF SCIENCE; v. 150, n. A, SI, p. 136-141, OCT 5 2014.
Citações Web of Science: 13
Resumo

The Habitat Harshness Hypothesis (HHH) predicts that populations inhabiting the intertidal area of a dissipative beach should produce more gametes and have a longer reproductive cycle than those inhabiting an intermediate or reflective beach. This hypothesis was proposed for the exposed morphodynamic continuum between the reflective and dissipative states; however, no attempt has been made thus far to verify whether the HHH is valid for tidal flats. In this study, we analysed the reproductive cycle of Anomalocardia brasiliana in an intermediate beach and in a tidal flat and compared the results to determine whether the reproductive cycles of A. brasiliana were in agreement with the predictions of the HHH and to examine the possibility of extending this hypothesis to tidal flats. A continuous spawning season and synchrony between sexes were observed at both sites, although the reproductive effort was higher in the intermediate beach. The results of this first attempt did not support the extension of the HHH to tidal flats. It is possible that hypotheses that take into account only physical variables may not be the most adequate for describing environments with such a high species richness and high abundance as tidal flats. Nevertheless, other studies are necessary to confidently expand or refute the HHH with regard to tidal flats, and this topic should be considered as a priority in future investigations in sandy beach ecology. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 08/52392-1 - Biologia populacional e reprodutiva de Anomalocardia brasiliana (Gmelin, 1791) (Bivalvia: Veneridae)
Beneficiário:Guilherme Nascimento Corte
Linha de fomento: Bolsas no Brasil - Mestrado