Ecology and behaviour

  title={Ecology and behaviour},
  author={M. W. Hardisty},
Characteristically, hagfishes are adapted for life at considerable depths at high salinities and low light intensities, but within the group there are distinct species differences, particularly in the depths to which they penetrate. Myxine glutinosa normally occurs between 50–100 m, but has been recorded down to 1100 m off the Norwegian coast and in Japanese waters M. garmani is found between 400–800 m. In some inner fiords, M. glutinosa may occur in much shallower water at about 30 m, but in… 

Notes on the Behaviour and Ecology of the Peale’s Dolphin, Lagenorhynchus australis, in the Strait of Magellan, Chile

Between March 1989 and December 1995. data on the abundance, group size, behaviour, diving patterns and habitat preference of Peale's dolphins. Lagenorhynchus australis, were collected on the west

Too cold for invasions? Contrasting patterns of native and introduced ascidians in subantarctic and temperate Chile

It is hypothesized that cold waters are the determining factor hindering the development of introduced ascidians, which tend to be temperate-warm water species, while the ongoing warming in the Southern Cone may change this picture and continued monitoring is strongly advised.

A Synthesis of the Ecology, Human-Related Threats and Conservation Perspectives for the Endangered Franciscana Dolphin

The franciscana is endemic to subtropical coastal waters of Brazil, Uruguay, and Argentina, and is the only living species of the family Pontoporiidae. It is regarded as the most endangered cetacean

Two-phase Recruitment of Apogonids (Pisces) on the Great Barrier Reef

Settlement and recruitment of the apogonids Apogon doederleini and Cheilodipterus quinquelineatus to continuous reef were examined at One Tree Island, southern Great Barrier Reef and results indicated that fish of all size classes moved from daytime sites and foraged at night.

Habitat preferences of the Levant Green Lizard, Lacerta media israelica (Peters, 1964)

Abstract The Levant Green Lizard, Lacerta media israelica (Peters, 1964), is a rare and declining lizard species that is classified as regionally vulnerable in Israel and Lebanon. We found

Reproductive biology of Odontophrynus americanus females (Duméril & Bribon, 1841) (Anura, Cycloramphidae) from Uruguay

The female reproductive pattern in a population of the frog Odontophrynus americanus from Uruguay, a species with explosive reproductive dynamics, is described, congruent with an explosive-type reproductive dynamic.

Phylogeny and Historical Biogeography of Steamer-Ducks (Anatidae: Tachyeres)

A morphologically based phylogenetic analysis of the relationships of Tachyeres to other waterfowl and the role of glaciations as vicariance events in the marine littoral of southernmost South America is reviewed.

Abundance and diversity of ascidians in the southern Gulf of Chiriquí, Pacific Panama

Data on Panama's ascidian communities provide a baseline of local biodiversity against which it will be possible to determine whether the communities change over time, if additional species become introduced to the region, or if native Panamanian species become invasive in other parts of the world.

Fine scale site fidelity in sea kraits: implications for conservation

This study demonstrates through recapture and translocation studies that sea kraits exhibit a strong and fine-scale fidelity for particular segments of the shore, Consequently these specific areas should be under strong protection, as it the case for the breeding beaches used by marine mammals, birds or turtles.

Body Size Differences Between New World and Old World, Arboreal, Tropical Vertebrates: Cause and Consequences

The fragile vegetation hypothesis explains the small body size of neotropical vertebrates, the frugivore-fruit interactions found in the neotropics, and the morphological diversity of neotroDical Insecta.