Results 221 to 230 of about 13,184 (260)

Vision of Bermuda Reef Fishes

Nature, 1967
RELYING heavily on the conclusions of Beer1, Walls2 and Brett3 assert that fishes are generally near-sighted. Although Beer found evidence by retinoscopy of far-sightedness in fishes, he assumed that retinoscopic reflexion occurs from the front retinal surface and thus falsely concluded that fishes are near sighted.
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Sex change in coral reef fish

Fish Physiology and Biochemistry, 2005
Gonadal differentiation can take many forms in fish, ranging from gonochorism, where individuals directly develop as male or female and finally possess only testis or ovaries at sexual maturation, to hermaphroditism where the same individuals can produce mature male and female gametes at some time in their lives.
Masaru, Nakamura, Yasuhisa, Kobayashi, Saori, Miura, Mohamad Ashraful, Alam, Ramji Kumar, Bhandari   +4 more
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Competition in reef fishes

2015
Competitive interactions, arising from the shared use of a limited resource, are among the most pervasive interactions among organisms. Small coral reef fishes make excellent subjects for ecological field experiments, and manipulations of resources and competitor density have produced significant insights into the biological mechanisms of competition ...
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Patterns and processes in reef fish diversity

Nature, 2003
A central aim of ecology is to explain the heterogeneous distribution of biodiversity on earth. As expectations of diversity loss grow, this understanding is also critical for effective management and conservation. Although explanations for biodiversity patterns are still a matter for intense debate, they have often been considered to be scale ...
Camilo, Mora, Paul M, Chittaro, Peter F, Sale, Jacob P, Kritzer, Stuart A, Ludsin   +4 more
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The Behaviour of Reef-Dwelling Sparid Fishes

Zoologica Africana, 1972
Notes on the behaviour of six species of sparid fish, all rock reef dwelling, and forming an important section of the inshore line fish industry in the southern Cape, are given. It is shown that these fishes, although closely related, show very different feeding patterns.
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Visual Biology of Hawaiian Coral Reef Fishes. II. Colors of Hawaiian Coral Reef Fish

Copeia, 2003
The colors of 51 species of Hawaiian reef fish have been measured using a spectrometer and therefore can be described in objective terms that are not influenced by the human visual experience. In common with other known reef fish populations, the colors of Hawaiian reef fish occupy spectral positions from 300-800nm; yellow or orange with blue, yellow ...
Marshall, N. J., Jennings, K., McFarland, W. N., Loew, E. R., Losey, G. S.   +4 more
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Effects of trap fishing on reef fish communities

Aquatic Conservation: Marine and Freshwater Ecosystems, 2006
Abstract Trap fishing is widespread on coral reefs but the sustainability of this practice is causing concern because it is efficient and unselective. The effects of trap fishing were investigated by comparing fish assemblages among six Caribbean islands subject to different trapping pressures.
Julie P. Hawkins, Callum M. Roberts, Fiona R. Gell, Calvin Dytham   +3 more
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Bone lipids of Jamaican reef fishes

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1988
1. Fourteen species from 12 different families of fish from the Jamaican coral reef environment were analyzed for bone lipid content and class. Acanthurus bahianus (Acanthuridae), the ocean surgeon, had 29.7% lipid (as per cent dry wt) in the neurocranium. 2. Eight species had 7.4-17.9% lipid in the neurocranium and include A.
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Social determination of sex in reef fishes

Seminars in Cell & Developmental Biology, 2009
Many fishes living in reef environments display remarkable flexibility in sexuality with social interactions determining their sex either during juvenile development or in adulthood. The evolutionary advantages of such flexibility are relatively well established. By contrast, the mechanisms by which social cues guide development of the sexual phenotype
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Transport of Calcareous Fragments by Reef Fishes

Science, 1961
The weight of sand, coral scrapings, algal fragments, and other calcareous materials which pass through the intestines of reef fishes was calculated on a hectare-per-year basis. It was found that browsing omnivorous reef fishes which rely, in part, on a plant diet ingested and redeposited at least 2300 kg of such material on a 1-hectare study reef near
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