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| Queiroga, H.; Costa, R.; Leonardo, N.; Soares, D.; Cleary, D.F.R.. |
| Here we investigate spatial variation in shell shape of Littorina saxatilis, an ovoviviparous species, and Melarhaphe neritoides, a species with planktonic eggs and larvae. Populations of both species were sampled in 6 sites located along the west coast of the Iberian Peninsula. Shell shape was studied using landmarkbased morphometric methods. Landmark data was used to estimate individual size and to describe shell shape. Prior to statistical analysis specimens were aligned using Generalised Procrustes Analysis (GPA). Ordinations based on GPA of landmark data and using Principal Components Analysis (PCA), revealed a clear spatial segregation of sites for both species, although this was more evident for L. saxatilis than M. neritoides. Statistical analysis... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Allometry; Dispersal; Life-history traits; Rocky shores; Shell shape; Western Iberia; 42.72. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/395161 |
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| Swierts, T.; Peijnenburg, K.T.C.A.; Leeuw, C. de; Cleary, D.F.R.; Hörnlein, C.; Setiawan, E.; Wörheide, G.; Erpenbeck, D.; Voogd, N.J. de. |
| The giant barrel sponge Xestospongia testudinaria is an ecologically important species that is widely distributed across the Indo-Pacific. Little is known, however, about the precise biogeographic distribution and the amount of morphological and genetic variation in this species. Here we provide the first detailed, fine-scaled (<200 km2) study of the morphological and genetic composition of X. testudinaria around Lembeh Island, Indonesia. Two mitochondrial (CO1 and ATP6 genes) and one nuclear (ATP synthase β intron) DNA markers were used to assess genetic variation. We identified four distinct morphotypes of X. testudinaria around Lembeh Island. These morphotypes were genetically differentiated with both mitochondrial and nuclear markers. Our results... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Xestospongia testudinaria; Indo-Pacific; DNA; Genetic composition; Sponge; 42.72. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/470573 |
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| Voogd, N.J. de; Cleary, D.F.R.; Hoeksema, B.W.; Noor, A.; Soest, R.W.M. van. |
| Sponge assemblages were investigated in the Spermonde Archipelago, southwestern Sulawesi, Indonesia. In this study spatial patterns of sponge similarity among sites were significantly related to remotely sensed environmental variables, the degree of human settlement and depth, but not to the distance between sites. Both oviparous and viviparous species groups responded to similar environmental constraints, and differences in similarity were unrelated to the distance between sites. The degree of human settlement, however, was significantly related to variation in the composition of viviparous, but not oviparous species. Our results demonstrate, most importantly, the utility of remotely sensed data in predicting the spatial turnover of diverse species... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Biodiversity; Indonesia; Porifera; Similarity; Spatial; 42.72. |
| Ano: 2006 |
URL: http://www.repository.naturalis.nl/record/227743 |
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| Soest, R.W.M van; Cleary, D.F.R.; Kluijver, M.J. de; Lavaleye, M.S.S.; Maier, C.; Duy, F.C. van. |
| Sponge diversity and community composition in bathyal cold water coral reefs (CWRs) were examined at 500-900 m depth on the southeastern slopes of Rockall Bank and the northwestern slope of Porcupine Bank, to the west of Ireland in 2004 and 2005 with boxcores. A total of 104 boxcore samples, supplemented with 10 trawl/dredge attempts, were analyzed for the presence and abundance of sponges, using microscopical examination of (sub)samples of collected coral branches, and semi-quantitative macroscopic examination. Approximate minimum size of identified and counted sponge individuals was 1 mm. Literature data were added to the Porcupine Bank results to compensate for a less intensive sampling program in that location. Species richness and abundance were... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Coldwater; Multivariate analysis; North Atlantic; Ordination; PCA; Porifera; RDA; 42.72. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/226534 |
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