Fine structure of the eyes of Onithochiton neglectus (Mollusca: Polyplacophora)

Boyle, P. R.

doi:10.1007/bf00335443

Cited by 54 publications

(31 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the dataset of 49 higher-level clades, neither eyes nor photoreceptors were documented in Mezostomida within the Annelida (Purschke 2005) nor in Aplacophora within Mollusca (Boyle 1969; Autrum et al 1979). …”

Section: Overviewmentioning

confidence: 97%

“…Given 31 species of Monoplacophora and 811 species of Cephalopoda (Wiens 2015b), the proportion of species with vision in the clade Cephalopoda + Monoplacophora group was estimated at 0.96. For Bivalvia, the family Pectinidae includes 6% of the total number of bivalve species (Boyle 1969; Autrum et al 1979), and so the value was estimated to be 0.06. For the higher-level clade Gastropoda + Scaphopoda, Scaphopoda do not have eyes whereas 50% of Gastropoda were considered as having eyes (see above).…”

Section: Overviewmentioning

confidence: 99%

“…In Bivalvia, eyes are found only in scallops of the family Pectinidae (Boyle 1969; Autrum et al 1979), with ~516 species (WoRMS Editorial Board 2015). In Gastropoda (61,105 species; Wiens 2015b), there is a continuum from simple photoreceptors to complex eyes (Burr 1982) so the exact number of species with each state is unclear.…”

Section: Overviewmentioning

confidence: 99%

See 2 more Smart Citations

What Explains Patterns of Diversification and Richness among Animal Phyla?

Jezkova

Wiens

2017

The American Naturalist

View full text Add to dashboard Cite

Animal phyla vary dramatically in species richness (from 1 species to >1.2 million), but the causes of this variation remain largely unknown. Animals have also evolved striking variation in morphology and ecology, including sessile marine taxa lacking heads, eyes, limbs, and complex organs (e.g. sponges), parasitic worms (e.g. nematodes, platyhelminths), and taxa with eyes, skeletons, limbs, and complex organs that dominate terrestrial ecosystems (arthropods, chordates). Relating this remarkable variation in traits to the diversification and richness of animal phyla is a fundamental yet unresolved problem in biology. Here, we test the impacts of 18 traits (including morphology, ecology, reproduction, and development) on diversification and richness of extant animal phyla. Using phylogenetic multiple regression, the best-fitting model includes five traits that explain ~74% of the variation in diversification rates (dioecy, parasitism, eyes/photoreceptors, a skeleton, non-marine habitat). However, a model including just three (skeleton, parasitism, habitat) explains nearly as much variation (~67%). Diversification rates then largely explain richness patterns. Our results also identify many striking traits that have surprisingly little impact on diversification (e.g. head, limbs, and complex circulatory and digestive systems). Overall, our results reveal the key factors that shape large-scale patterns of diversification and richness across >80% of all extant, described species.

show abstract

Section: Overviewmentioning

confidence: 97%

Section: Overviewmentioning

confidence: 99%

See 1 more Smart Citation

What Explains Patterns of Diversification and Richness among Animal Phyla?

Jezkova

Wiens

2017

The American Naturalist

View full text Add to dashboard Cite

show abstract

“…Like other noncephalic eyes in molluscs, the ocelli are highly repetitive structures, where a single individual of Onithochiton neglectus (Rochebrune, 1881) can have 411 to 1,472 ocelli in rows along all shell valves (Boyle 1969b). A detailed account of the orientation, patterning, and cellular structure of the externally pigmented eye is provided by Boyle (1969aBoyle ( , 1977. Reviews on chiton sensory organs can be found in Charles (1966), Boyle (1977), Messenger (1981), Kaas and van Belle (1985), and Serb and Eernisse (2008).…”

Section: Polyplacophoramentioning

confidence: 99%

Toward Developing Models to Study the Disease, Ecology, and Evolution of the Eye in Mollusca*

Serb

2008

American Malacological Bulletin

View full text Add to dashboard Cite

Several invertebrate systems have been developed to study various aspects of the eye and eye disease including Drosophila, Planaria, Platynereis, and most recently, the cubozoan jellyfish Tripedalia; however, molluscs, the second largest metazoan phylum, so far have been underrepresented in eye research. This is surprising as mollusc systems offer opportunities to study visual processes that may be altered by disease, vision physiology, development of the visual system, behavior, and evolution. Malacologists have labored for over a century as morphologists, systematists, physiologists, and ecologists in order to understand the structural and functional diversity in molluscs at all levels of biological organization. Yet, malacologists have had little opportunity to interact with researchers whose interests are restricted to the biology and development of eyes as model systems as they tend not to publish in the same journals or attend the same meetings. In an effort to highlight the advantages of molluscan eyes as a model system and encourage greater collaboration among researchers, I provide an overview of molluscan eye research from these two perspectives: eye researchers whose interests involve the development, physiology, and disease of the eye and malacologists who study the complete organism in its natural environment. I discuss the developmental and genetic information available for molluscan eyes and the need to place this work in an evolutionary perspective. Finally, I discuss how synergy between these two groups will advance eye research, broaden research in both fields, and aid in developing new molluscan models for eye research. Abstract: Several invertebrate systems have been developed to study various aspects of the eye and eye disease including Drosophila, Planaria, Platynereis, and most recently, the cubozoan jellyfish Tripedalia; however, molluscs, the second largest metazoan phylum, so far have been underrepresented in eye research. This is surprising as mollusc systems offer opportunities to study visual processes that may be altered by disease, vision physiology, development of the visual system, behavior, and evolution. Malacologists have labored for over a century as morphologists, systematists, physiologists, and ecologists in order to understand the structural and functional diversity in molluscs at all levels of biological organization. Yet, malacologists have had little opportunity to interact with researchers whose interests are restricted to the biology and development of eyes as model systems as they tend not to publish in the same journals or attend the same meetings. In an effort to highlight the advantages of molluscan eyes as a model system and encourage greater collaboration among researchers, I provide an overview of molluscan eye research from these two perspectives: eye researchers whose interests involve the development, physiology, and disease of the eye and malacologists who study the complete organism in its natural environment. I discuss the developmental and genet...

show abstract

“…The dorsal eyes give a distinct "off" response upon illumination and are believed to be related to the shadow reaction of the animal (FUJIMOTO, YANASE, OKUNO, and IWATA, 1966). And BOYLE (1969) has recently reported whorls of membranes derived from 9 + 2 cilia at the periphery of the eye of a polyplacophoran mollusk, Onithochiton neglectu8. cit.).…”

Section: Lamellaementioning

confidence: 99%