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|Title: ||Rock-pools as nurseries for co-existing limpets: spatial and temporal patterns of limpet recruitment.|
|Authors: ||Seabra, M. I.|
Hawkins, S. J.
Castro, J. J.
Port of Sines
|Issue Date: ||2020|
|Publisher: ||Elsevier B. V.|
|Citation: ||Seabra, M. I., S. J. Hawkins, C. Espírito-Santo, J. J. Castro, T. Cruz, 2020. Rock-pools as nurseries for co-existing limpets: spatial and temporal patterns of limpet recruitment. Regional Studies in Marine Science, 37: 101339.|
|Abstract: ||Rock-pools are considered to be important habitats for early shore-life of intertidal limpets. We
investigated recruitment patterns of three co-existing limpet species in the region of Sines (SW
Portugal): the patellids Patella depressa and Patella ulyssiponensis, and the siphonariid Siphonaria
pectinata. Juvenile limpets (shell length ≤ 10 mm for P. depressa and ≤ 5 mm for S. pectinata) were
counted in summer 2007 and winter 2009, in a wide range of intertidal habitats, on three natural
shores (one shore inside the Port of Sines and two shores outside the Port, 4 and 9 km away). Temporal
and among-shore patterns of abundance of recruits (shell length < 5 mm for all species) into mid-shore
rock-pools were examined over quarterly periods, from May 2005 to July 2008. Despite a widespread
distribution of P. depressa and S. pectinata juveniles, significantly higher juvenile abundance was mostly
found in habitats of rock-pools (maxima of 94 and 92 juveniles in 15x15 cm, respectively, both in
rock-pools at mid-shore). All species were found to recruit into mid-shore rock-pools year-round.
Recruitment of both patellid species followed a similar seasonal pattern, being consistently low during
all summer periods (maxima of 64 recruits of P. depressa during spring 2008 and 45 recruits of P.
ulyssiponensis during spring 2007, both in 15x15 cm). High inter-annual variation was found in the
intensity of recruitment of S. pectinata, with the yearly highest densities of recruits during summer
or autumn periods (maximum of 134 recruits in 15x15 cm during summer 2005). Recruitment of all
species was highest on the farthest shore from the Port. This study suggests the primacy of rockpools
as nurseries for both patellogastropod and pulmonate limpets and the value of these habitats
for sustaining limpet populations on this coast, where rocky-shores have been gradually replaced by
artificial structures with scarcity of rock-pools.|
|Appears in Collections:||BIO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
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