Distribution ranges of the acorn barnacle Perforatus (=Balanus) perforatus (Bruguière, 1789) in the NE Atlantic are influenced by reproductive parameters

Distribution ranges of the acorn barnacle Perforatus (=Balanus) perforatus (Bruguière, 1789) in... The acorn barnacle Perforatus perforatus has a defined breeding temperature range and reproductive season that varies geographically. This study aims to investigate the influence of reproductive parameters of P. perforatus in species distribution ranges in the NE Atlantic. The hypothesis tested is that the breeding season of P. perforatus off NW Portugal begins earlier and is longer than at the northern distribution limit of this species, and that fecundity is higher in terms of number of broods per individual per breeding season. The span of the breeding season and fecundity indices were assessed based on the presence and maturation of ovigerous lamellae and correlated with temperature. Results showed that the breeding season in the NW Portuguese coast lasts over 10 months (February–November) and the number of broods was determined to be 9.2 ind/year. Temperature seems to be a primary factor determining the breeding season, but other factors, such as food availably, light and photoperiod, are also of great importance. However, the higher quantity of embryos produced in NW Portugal is not reflected in a higher abundance of settled adults in rocky shores. Contrarily, the species is particularly abundant in artificial substrata offshore. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Hydrobiologia Springer Journals

Distribution ranges of the acorn barnacle Perforatus (=Balanus) perforatus (Bruguière, 1789) in the NE Atlantic are influenced by reproductive parameters

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Springer International Publishing
Copyright © 2017 by Springer International Publishing AG
Life Sciences; Freshwater & Marine Ecology; Ecology; Zoology
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