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Caulerpa cylindracea Spread on Deep Rhodolith Beds Can Be Influenced by the Morphostructural Composition of the Bed. DIVERSITY 2023. [DOI: 10.3390/d15030349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
The green alga Caulerpa cylindracea Sonder (Chlorophyta; Bryopsidales) is one of the most invasive alien macroalgae in the Mediterranean Sea, where it is also spreading on rhodolith beds, an important biogenic assemblage typical of deep substrates. Despite the importance of rhodoliths, data on the competitive interactions with C. cylindracea are still scarce. To deepen the knowledge on the topic, C. cylindracea occurrence on the rhodolith bed of Capo Carbonara Marine Protected Area (Italy) was explored. Quantitative analyses of videoframes obtained from Remote Operated Vehicle records in three different MPA sites, Is Piscadeddus, Santa Caterina, and Serpentara, allow for estimates of both the cover of rhodoliths (considering the main morphotypes) and of C. cylindracea, as well as their competition. All sites showed a well-developed rhodolith bed, although some differences were highlighted in their composition in terms of morphotype, shape, and dimension of rhodoliths, as well as in the C. cylindracea cover. In particular, Santa Caterina appeared to be the site with the highest mean total cover of rhodoliths (68%), and of C. cylindracea (25%). The obtained results suggest that different competitive interactions occur between C. cylindracea and rhodolith beds, in relation to the morphostructural composition of the latter and in response to environmental conditions that affect rhodolith bed composition.
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The joint influence of environmental and anthropogenic factors on the invasion of two alien caulerpae in northwestern Mediterranean. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02654-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Pusceddu A, Mikhno M, Giglioli A, Secci M, Pasquini V, Moccia D, Addis P. Foraging of the sea urchin Paracentrotus lividus (Lamarck, 1816) on invasive allochthonous and autochthonous algae. MARINE ENVIRONMENTAL RESEARCH 2021; 170:105428. [PMID: 34325276 DOI: 10.1016/j.marenvres.2021.105428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 07/16/2021] [Accepted: 07/17/2021] [Indexed: 06/13/2023]
Abstract
Attempts to control marine invasive alien species (IAS) with native predators gained contrasting results, so far. To explore the feasibility of this approach to control the invasive marine alga Caulerpa cylindracea, we investigated the foraging behaviour of the sea urchin Paracentrotus lividus on three native macroalgae (Ulva sp., Penicillus capitatus and Cystoseira compressa) and on C. cylindracea. The consumption rate of C. cylindracea fresh biomass resulted larger than that of the other algae, when offered separately or in combination. C. cylindracea, however, was not the most attractive food item. The larger consumption rates of C. cylindracea can be explained by its specific caloric content (as assessed by its biochemical composition) that is lower than that of the other algae. Our results confirm that P. lividus can feed on C. cylindracea, but do not fully support its use to control C. cylindracea, unless in conditions where this alga is largely dominant because of other factors.
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Affiliation(s)
- Antonio Pusceddu
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli, 1, 09126, Cagliari, Italy.
| | - Marta Mikhno
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - Angelica Giglioli
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - Marco Secci
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - Viviana Pasquini
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - Davide Moccia
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli, 1, 09126, Cagliari, Italy
| | - Pierantonio Addis
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli, 1, 09126, Cagliari, Italy
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Zunino S, Canu DM, Zupo V, Solidoro C. Direct and indirect impacts of marine acidification on the ecosystem services provided by coralligenous reefs and seagrass systems. Glob Ecol Conserv 2019. [DOI: 10.1016/j.gecco.2019.e00625] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Noè S, Badalamenti F, Bonaviri C, Musco L, Fernández TV, Vizzini S, Gianguzza P. Food selection of a generalist herbivore exposed to native and alien seaweeds. MARINE POLLUTION BULLETIN 2018; 129:469-473. [PMID: 29079302 DOI: 10.1016/j.marpolbul.2017.10.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 10/03/2017] [Accepted: 10/06/2017] [Indexed: 06/07/2023]
Abstract
Understanding which factors influence the invasion of alien seaweed has become a central concern in ecology. Increasing evidence suggests that the feeding preferences of native herbivores influence the success of alien seaweeds in the new community. We investigated food selection of a generalist native grazer Paracentrotus lividus, in the presence of two alien seaweeds (Caulerpa cylindracea and Caulerpa taxifolia var. distichophylla) and two native seaweeds (Dictyopteris membranacea and Cystoseira compressa). Sea urchins were fed with six experimental food items: C. cylindracea, C. taxifolia var. distichophylla, a mixture of C. cylindracea and C. taxifolia var. distichophylla, D. membranacea, C. compressa and a mixture of D. membranacea and C. compressa. P. lividus ingested all the combinations of food offered, though it preferentially consumed the alien mixture, C. cylindracea and D. membranacea. The alien C. taxifolia var. distichophylla was consumed significantly less than the other food items and, interestingly, it was ingested in a greater amount when mixed with C. cylindracea than when on its own. This finding suggests that C. taxifolia var. distichophylla may become vulnerable to sea urchin grazing when it grows intermingled with C. cylindracea, which does not gain immediate protection from the presence of the very low palatable congeneric seaweed. The present study highlights the potential role of native grazers to indirectly affect the interspecific competition between the two alien seaweeds in the Mediterranean Sea.
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Affiliation(s)
- Simona Noè
- Department of Earth and Marine Science, University of Palermo, CoNISMa, Via Archirafi 18, 90123 Palermo, Italy
| | - Fabio Badalamenti
- National Research Council (CNR)-Institute of Coastal Marine Environment (IAMC), Via G. Da Verrazzano 17, 91014 Castellammare del Golfo, (TP), Italy; Stazione Zoologica Anton Dohrn, Integrated Marine Ecology Department, Villa Comunale, 80121 Naples, Italy
| | - Chiara Bonaviri
- Department of Earth and Marine Science, University of Palermo, CoNISMa, Via Archirafi 18, 90123 Palermo, Italy.
| | - Luigi Musco
- Stazione Zoologica Anton Dohrn, Integrated Marine Ecology Department, Villa Comunale, 80121 Naples, Italy
| | - Tomás Vega Fernández
- Stazione Zoologica Anton Dohrn, Integrated Marine Ecology Department, Villa Comunale, 80121 Naples, Italy; National Research Council (CNR)-Institute of Coastal Marine Environment (IAMC), Calata Porta di Massa, 80133 Naples, Italy
| | - Salvatrice Vizzini
- Department of Earth and Marine Science, University of Palermo, CoNISMa, Via Archirafi 18, 90123 Palermo, Italy
| | - Paola Gianguzza
- Department of Earth and Marine Science, University of Palermo, CoNISMa, Via Archirafi 18, 90123 Palermo, Italy
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A few is enough: a low cover of a non-native seaweed reduces the resilience of Mediterranean macroalgal stands to disturbances of varying extent. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1442-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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