Topic
Cuspidaria
About: Cuspidaria is a research topic. Over the lifetime, 25 publications have been published within this topic receiving 172 citations.
Papers
TL;DR: It was concluded that there is a strong suggestion of phylogenetic relationship between the Protobranchia and the Septibranchia.
Abstract: SUMMARY
1Detailed studies have been made of the structure and function of the stomach in the two protobranchs, Nucula nucleus L. and Nuculana minuta (Muller).
2The structure of the stomach in the Protobranchia was described and figured, and defined as Stomach Type I.
3The stomach of the septibranch Cuspidaria cuspidaia (Olivi) was similarly examined, described and figured, and was defined as Stomach Type II.
4The stomachs of the Protobranchia and Septibranchia were compared and it was noted that there were several common features. Further resemblances were found in the structure of the digestive diverticula, and in the muscular pumping of water by the ctenidium (Nuculana) or by the septum (Cuspidaria).
5It was concluded that there is a strong suggestion of phylogenetic relationship between the Protobranchia and the Septibranchia.
6The view, previously stated by Yonge, that there was no justification for linking the Protobranchia and the Arcacea in an order Taxodonta was upheld.
49 citations
TL;DR: The food-capturing organ is the inhalant siphon, which can be suddenly protruded towards potential prey such as copepods and ostracods, while simultaneously a strong inhalant current is created.
Abstract: The septibranch bivalves Cuspidaria rostrata and Cuspidaria obesa are carnivores. The food-capturing organ is the inhalant siphon, which can be suddenly protruded towards potential prey such as copepods and ostracods, while simultaneously a strong inhalant current is created. When the septum is rapidly contracted blood is forced from mantle sinuses into the rostral and siphonal sinuses, causing the protrusion of the inhalant siphon. The septal contraction also leaves negative pressure in the infra-septal palliai chamber and produces the inhalant current. The stimulus for the directional food-capturing response is a low-frequently vibration which acts upon mechanoreceptors situated in the siphonal tentacles. Small crustaceans are the most frequent prey. Protein digestion is initiated extracellularly in the stomach.
40 citations
TL;DR: A revision of the members of Cuspidaria present on the continental slope of the Campos Basin off southeastern Brazil was carried out, finding three species recorded from Brazilian waters for the first time and two previously unknown to science described here.
Abstract: A revision of the members of Cuspidaria present on the continental slope (700–2,000 m) of the Campos Basin (22°S) off southeastern Brazil was carried out. Eight taxa are recognized. Two of them were previously unknown to science and are described here: Cuspidaria tamandua, n. sp., and Cuspidaria wapixana, n. sp. Three species are recorded from Brazilian waters for the first time: Cuspidaria papyria Jeffreys, 1876, a poorly described species that is here redescribed; Cuspidaria wollastonii Smith, 1885; and Cuspidaria cf. barnardi Knudsen, 1970. The geographic distribution is enlarged northwards for Cuspidaria platensis (Smith, 1885) and southwards for Cuspidaria monosteira Dall, 1890. Cuspidaria circinata (Jeffreys, 1876) was previously reported for Brazil, but the present record fills a gap in its distribution in the southwest Atlantic. Bathyneaera globulosa Krylova, 1993, is here considered a junior synonym of C. monosteira; Cuspidaria consociata (Smith, 1885) and Cuspidaria munieri Dautzenberg ...
16 citations
TL;DR: Harper, E. M., Palmer, T. J., Hudson, J. D. as mentioned in this paper described the Middle Jurassic bivalve "Cuspidaria" ibbetsoni: a corbulid not a septibranch.
Abstract: Harper, E. M., Palmer, T. J., Hudson, J. D. (2002). The Middle Jurassic bivalve 'Cuspidaria' ibbetsoni: A corbulid not a septibranch. Palaeontology, 45, 759-769
14 citations
TL;DR: Discovery of an arenophilic system in cuspidariid clams adds support to the idea that the glands are a synapomorphy of Anomalodesmata, secondarily absent in only one of the major component branches.
Abstract: The arenophilic system of anomalodesmatan clams comprises multicellular glands, muscular papillae, and radial lines of adhesive secretion, which glue sand grains and other extraneous particles to the external surface of the shell. The presence and morphology of these organs have been established in an increasing number of taxa, but arenophilic glands were not previously known to occur in the deep-sea, carnivorous family Cuspidariidae. Dissections, histological sections and ultrastructural examination of members of the cuspidariid genera Cuspidaria and Cardiomya revealed a functional arenophilic system positioned around the siphonal apparatus. Glands are contained in muscular papillae at the posterior tip of the siphonal sheath, from where they deposit their adhesive secretion onto the shell rostrum. Discovery of an arenophilic system in cuspidariid clams adds support to the idea that the glands are a synapomorphy of Anomalodesmata, secondarily absent in only one of the major component branches (the clade joining Thraciidae, Cleidothaeridae, and Myochamidae). Moreover, similarity between the arenophilic papillae we observed on the siphonal sheath of Cuspidaria, Cardiomya, and Myonera, and literature reports on the crown of tentacles of Multitentacula is puzzling and highlights the need for further studies of the latter genus. J. Morphol. 275:9–16, 2014. © 2013 Wiley Periodicals, Inc.
14 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2019 | 2 |
| 2018 | 1 |
| 2016 | 1 |
| 2015 | 1 |
| 2014 | 1 |