Functional Morphology of Feeding and Grooming in Crustacea
... which a particular function can be accomplished; 4) they develop in ontogeny from dissimilar ... more ... which a particular function can be accomplished; 4) they develop in ontogeny from dissimilar ... the probability that observed similarity in structure is due to analogy rather than homology. ... dealing, to know which features represent fundamental structures on which variations are built ...
Hyalella pauperocavae n. sp. from Huancayo, Perú, is described. Five other epigean freshwater amp... more Hyalella pauperocavae n. sp. from Huancayo, Perú, is described. Five other epigean freshwater amphipods have been described from Peru (excluding Lake Titicaca), but the lack of type material and poor descriptions do not allow the assignment of the species described here to any of the names known for the area.
The effects of trawling disturbance on a soft-sediment system were investigated with a manipulati... more The effects of trawling disturbance on a soft-sediment system were investigated with a manipulative field experiment in an area that had been closed to shrimp trawling activities for 20 years. The area was also chosen for its weak natural physical agents i.e. no scouring of sediments by storm events or tidal flow, allowing a quantitative assessment of the effects of
... Western North Atlantic, Cape Hatteras to Florida Straits, Antilles Lusitanian-Mediterranean ... more ... Western North Atlantic, Cape Hatteras to Florida Straits, Antilles Lusitanian-Mediterranean Stoloniferous forms Clavulariidae Anthelia borealis (Koren and Danielssen, 1883) XX Antheliafallax Broch, 1912 XX Clavularia alba (Grieg, 1888) XX Clavularia griegii Madsen, 1944 ...
Journal of the Marine Biological Association of the United Kingdom, 2012
Recent exploration of the New England and Corner Seamounts revealed four new species of Chrysogor... more Recent exploration of the New England and Corner Seamounts revealed four new species of Chrysogorgia, described here using a combination of molecular and morphological data. These four species are characterized by a sinistral spiral, a character that, with one known exception, has only been reported for Pacific species. In addition, two species have a sclerite composition typical of the Pacific (‘squamosae typicae’). This faunal connection between the Atlantic and the Pacific is confirmed by analysis of the mitochondrial msh1 gene. The exceptional preservation of specimens collected with remotely operated vehicles allows us to discuss the effect of growth on some morphological characters.
Journal of the Marine Biological Association of the UK, 2005
Some aspects of the reproductive biology of the polychaete Gorgoniapolynoe caeciliae have been de... more Some aspects of the reproductive biology of the polychaete Gorgoniapolynoe caeciliae have been described for the first time. Gorgoniapolynoe caeciliae is a deep-sea commensal species associated with Candidella imbricata, an octocoral that populates the New England Seamount chain. Gorgoniapolynoe caeciliae is a dioecious species with an equal sex ratio and fertile segments throughout most of the adult body. The gonads of both sexes are associated with genital blood vessels emerging from the posterior surface of most intersegmental septa. In the female, oogenesis is intraovarian with oocytes being retained within the ovary until vitellogenesis is completed. The largest female examined contained over 3000 eggs with a maximum diameter of 80–90 μm. In the male, the testes are repeated in numerous segments and consist of small clusters of spermatogonia, spermatocytes, and early spermatids associated with the walls of the genital blood vessels. Early spermatids are shed into the coelom whe...
Functional Morphology of Feeding and Grooming in Crustacea
... which a particular function can be accomplished; 4) they develop in ontogeny from dissimilar ... more ... which a particular function can be accomplished; 4) they develop in ontogeny from dissimilar ... the probability that observed similarity in structure is due to analogy rather than homology. ... dealing, to know which features represent fundamental structures on which variations are built ...
Hyalella pauperocavae n. sp. from Huancayo, Perú, is described. Five other epigean freshwater amp... more Hyalella pauperocavae n. sp. from Huancayo, Perú, is described. Five other epigean freshwater amphipods have been described from Peru (excluding Lake Titicaca), but the lack of type material and poor descriptions do not allow the assignment of the species described here to any of the names known for the area.
The effects of trawling disturbance on a soft-sediment system were investigated with a manipulati... more The effects of trawling disturbance on a soft-sediment system were investigated with a manipulative field experiment in an area that had been closed to shrimp trawling activities for 20 years. The area was also chosen for its weak natural physical agents i.e. no scouring of sediments by storm events or tidal flow, allowing a quantitative assessment of the effects of
... Western North Atlantic, Cape Hatteras to Florida Straits, Antilles Lusitanian-Mediterranean ... more ... Western North Atlantic, Cape Hatteras to Florida Straits, Antilles Lusitanian-Mediterranean Stoloniferous forms Clavulariidae Anthelia borealis (Koren and Danielssen, 1883) XX Antheliafallax Broch, 1912 XX Clavularia alba (Grieg, 1888) XX Clavularia griegii Madsen, 1944 ...
Journal of the Marine Biological Association of the United Kingdom, 2012
Recent exploration of the New England and Corner Seamounts revealed four new species of Chrysogor... more Recent exploration of the New England and Corner Seamounts revealed four new species of Chrysogorgia, described here using a combination of molecular and morphological data. These four species are characterized by a sinistral spiral, a character that, with one known exception, has only been reported for Pacific species. In addition, two species have a sclerite composition typical of the Pacific (‘squamosae typicae’). This faunal connection between the Atlantic and the Pacific is confirmed by analysis of the mitochondrial msh1 gene. The exceptional preservation of specimens collected with remotely operated vehicles allows us to discuss the effect of growth on some morphological characters.
Journal of the Marine Biological Association of the UK, 2005
Some aspects of the reproductive biology of the polychaete Gorgoniapolynoe caeciliae have been de... more Some aspects of the reproductive biology of the polychaete Gorgoniapolynoe caeciliae have been described for the first time. Gorgoniapolynoe caeciliae is a deep-sea commensal species associated with Candidella imbricata, an octocoral that populates the New England Seamount chain. Gorgoniapolynoe caeciliae is a dioecious species with an equal sex ratio and fertile segments throughout most of the adult body. The gonads of both sexes are associated with genital blood vessels emerging from the posterior surface of most intersegmental septa. In the female, oogenesis is intraovarian with oocytes being retained within the ovary until vitellogenesis is completed. The largest female examined contained over 3000 eggs with a maximum diameter of 80–90 μm. In the male, the testes are repeated in numerous segments and consist of small clusters of spermatogonia, spermatocytes, and early spermatids associated with the walls of the genital blood vessels. Early spermatids are shed into the coelom whe...
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