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Rock-pools as nurseries for co-existing limpets: Spatial and temporal patterns of limpet recruitment

Rock-pools as nurseries for co-existing limpets: Spatial and temporal patterns of limpet recruitment
Rock-pools as nurseries for co-existing limpets: Spatial and temporal patterns of limpet recruitment
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 rock-pools 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.
Nursery ground, Patellid, Port of Sines, SW Portugal, Siphonariid, Tidepool
2352-4855
Seabra, Maria Inês
4bed0631-902c-4a2a-b8f7-7288c1acf721
Hawkins, Stephen J.
758fe1c1-30cd-4ed1-bb65-2471dc7c11fa
Espírito-santo, Cristina
ab3315cf-f797-459f-bd25-5c47c26db1db
Castro, João J.
6ad8e915-7a1c-4ecb-a3f2-5104cf06883a
Cruz, Teresa
a7b16957-a898-4fc8-8d17-2c2e3b6f8412
Seabra, Maria Inês
4bed0631-902c-4a2a-b8f7-7288c1acf721
Hawkins, Stephen J.
758fe1c1-30cd-4ed1-bb65-2471dc7c11fa
Espírito-santo, Cristina
ab3315cf-f797-459f-bd25-5c47c26db1db
Castro, João J.
6ad8e915-7a1c-4ecb-a3f2-5104cf06883a
Cruz, Teresa
a7b16957-a898-4fc8-8d17-2c2e3b6f8412

Seabra, Maria Inês, Hawkins, Stephen J., Espírito-santo, Cristina, Castro, João J. and Cruz, Teresa (2020) Rock-pools as nurseries for co-existing limpets: Spatial and temporal patterns of limpet recruitment. Regional Studies in Marine Science, 37, [101339]. (doi:10.1016/j.rsma.2020.101339).

Record type: Article

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 rock-pools 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.

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More information

Accepted/In Press date: 12 June 2020
Published date: 22 June 2020
Keywords: Nursery ground, Patellid, Port of Sines, SW Portugal, Siphonariid, Tidepool

Identifiers

Local EPrints ID: 444447
URI: http://eprints.soton.ac.uk/id/eprint/444447
ISSN: 2352-4855
PURE UUID: 7bc703cb-e621-4732-adb3-80c030a989f9

Catalogue record

Date deposited: 19 Oct 2020 16:34
Last modified: 25 Nov 2021 17:16

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Contributors

Author: Maria Inês Seabra
Author: Cristina Espírito-santo
Author: João J. Castro
Author: Teresa Cruz

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