Clathria ( Cornulotrocha ) rosetafiordica sp. nov. from a south-east Pacific fjord (Chilean Patagonia) (Microcionidae: Poecilosclerida: Demospongiae: Porifera)
This article reports on a new species originating from the northern Chilean fjord region, which argued for the resurrection of Cornulotrocha , here classified as a new subgenus of Clathria , for sponges with choanosomal acanthostyles, ectosomal quasidiactinal monactines and rosettes of palmate (an)i...
| Published in: | Journal of the Marine Biological Association of the United Kingdom |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Cambridge University Press (CUP)
2006
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1017/s0025315406013920 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315406013920 |
| Summary: | This article reports on a new species originating from the northern Chilean fjord region, which argued for the resurrection of Cornulotrocha , here classified as a new subgenus of Clathria , for sponges with choanosomal acanthostyles, ectosomal quasidiactinal monactines and rosettes of palmate (an)isochelae. Clathria ( Cornulotrocha ) rosetafiordica sp. nov. was collected at 23 m depth at Quintupeu fjord (∼42°S), and is unique within this very large genus, in possessing rosettes of palmate anisochelae. The new species is compared to the only other known Clathria ( Cornulotrocha ), viz. C. ( Cornulotrocha ) cheliradians n. comb.; to the single other Clathria known with anisochelae, viz C. ( Thalysias ) dubia to other crustose Clathria from southern South America, the subantarctic and Antarctic areas; and also to other sponges bearing rosettes; and is considered clearly distinct from all. The phylogenetic significance of rosettes is discussed, a likely adaptive value being discarded in view of the variable location of such structures in the distinct poecilosclerid taxa in which they occur. |
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