Caprellid assemblages (Crustacea: Amphipoda) in shallow waters invaded by <Emphasis Type="Italic">Caulerpa racemosa</Emphasis> var. <Emphasis Type="Italic">cylindracea</Emphasis> from southeastern Spain |
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Authors: | M Vázquez-Luis J M Guerra-García P Sanchez-Jerez J T Bayle-Sempere |
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Institution: | (1) Centro de Investigación Marina de Santa Pola (CIMAR), Ayto. de Santa Pola y Universidad de Alicante, Torre d’Enmig s/n, Cabo de Santa Pola, Alicante, Spain;(2) Laboratorio de Biología Marina, Departamento de Fisiología y Zoología, Facultad de Biología, Universidad de Sevilla, Avda Reina Mercedes 6, 41012 Sevilla, Spain;(3) Departamento de Ciencias del Mar y Biología Aplicada, Edificio Ciencias V. Universidad de Alicante, POB 99, 03080 Alicante, Spain |
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Abstract: | Growth of the invasive algae Caulerpa racemosa var. cylindracea in shallow habitats may influence the faunal assemblage composition. We studied its effects on caprellid assemblages associated
with shallow-water habitats of hard and soft bottoms from the SE Iberian Peninsula (native rocky-bottom algae, C. racemosa from hard and soft bottoms, and Caulerpa prolifera, Cymodocea nodosa and Posidonia oceanica from soft bottoms). Samples were taken in two different sampling periods (September 2004 and March 2005). A total of seven
caprellid species were identified, with important differences in their distribution in different habitats. Total abundance
of caprellids was very high in March on native algae on hard bottoms, and on C. racemosa on both soft and hard bottoms. On both hard and soft bottoms, abundances of Caprella hirsuta recorded from C. racemosa were low. On the other hand, a higher abundance of other species, namely C. acanthifera, C. santosrosai, Phtisica marina and Pseudoprotella phasma, was recorded from C. racemosa. The results indicate that C. racemosa may have a positive influence on some caprellid species, while seasonal changes are also evident. It is concluded that introduced
C. racemosa may serve as a new habitat, promoting and maintaining caprellid populations in shallow Mediterranean habitats. |
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Keywords: | Amphipoda Caprellidae Caulerpa racemosa var cylindracea Southeastern Spain Invasive species |
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