Morphology of the eye and visual acuities in the settlement-intervals of some coral reef fishes (Labridae, Scaridae)

Authors
Citation
Mr. Lara, Morphology of the eye and visual acuities in the settlement-intervals of some coral reef fishes (Labridae, Scaridae), ENV BIOL F, 62(4), 2001, pp. 365-378
Citations number
70
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Aquatic Sciences
Journal title
ENVIRONMENTAL BIOLOGY OF FISHES
ISSN journal
0378-1909 → ACNP
Volume
62
Issue
4
Year of publication
2001
Pages
365 - 378
Database
ISI
SICI code
0378-1909(2001)62:4<365:MOTEAV>2.0.ZU;2-E
Abstract
The morphology of the retina and photoreceptors of settlement-interval larv ae and early juveniles and some adults of 12 species of Caribbean labrids a nd scarids were examined using histological techniques. The retinal structu re is described in these species and life intervals. Larvae have a pure con e retina and unorganized mosaic and organization into a square mosaic patte rn occurs during metamorphosis. Early post-settlement juveniles have an org anized mosaic with structures that may enable them to detect polarized and UV light. Visual acuities were calculated for all species and life interval s and acuities ranged between 86.6-29.4 min of arc in the settlement-interv als and 16-1.8 min of arc in the adults. The visual abilities of the settle ment-interval fishes and the possibility of the use of vision during settle ment are discussed.