Ranella olearium URUGUAY

VISAYA, 2007

Study of Ranellidae family in Canary Islands

2007

Sassia melpangi is described from bathyal depths off Oahu, Hawaii. This new species is most similar to S. nassariformis from comparable depths off southeastern Africa, and to a lesser extent to S. remensa from the western Pacific. Sassia melpangi may be distinguished from all other Sassia on the basis of its broad, evenly rounded whorls, absence of a distinct shoulder on the varices, numerous axial ribs and spiral cords that produce an evenly reticulate surface sculpture, a broadly ovate aperture with distinctive inductura and strongly pigmented pattern along the edge of the outer lip.

2011

The Caribbean species included within the family Tornidae in the genera <em>Circulus</em>, <em>Teinostoma</em>, <em>Tornus</em>, <em>Anticlimax</em>, <em>Aorotrema</em>, <em>Cyclostremiscus</em>, <em>Cochliolepis</em>, <em>Episcynia</em>, <em>Parviturboides</em>, <em>Pleuromalaxis</em>, <em>Solariorbis</em>, <em>Vitrinella </em>and <em>Vitrinorbis </em>are studied, based on about 2700 specimens and shells examined. There are a total of 101 species, including 4 in the genus <em>Circulus</em>, 27 in <em>Teinostoma</em>, 2 in <em>Tornus</em>, 8 in <em>Anticlimax</em>, 2 in <em>Aorotrema</em>, 14 in <em>Cyclostremiscus</em>, 9 in <em>Cochliolepis</em>, 1 in <em>Episcynia</em>, 1 in <em>Parviturboides</em>, 1 in <em>Pleuro...

JOURNAL OF FISH BIOLOGY, 2016

Unusual catches of more than 4200 kg of the slender sunfish Ranzania laevis are described from the southwestern Atlantic, corresponding to the largest aggregation records for the species. These unexpected records were associated with unusually warm currents in the area. Males and females were physiologically able to spawn at the moment of capture, suggesting the occurrence of reproductive aggregation in this species.

2007

Crustaceana, 2000

Latin American Journal of Aquatic Research, 2012

Field and laboratory study of egg masses, encapsulated development stages and early-hatched veliger larvae of the sub-Antarctic observations Fusitriton magellanicus (Röding, 1798) are described from samples collected in the Magellan Strait (Santa Ana Point: 53º38'15"S, 70º54'38"W), Chile, between 2005 and. We aimed to determined if: i) if these gastropod shows a reproductive pattern development similar to low-latitude ranellids, and with respect to other sub-Antarctic locations within the Gondwanian distributional range (Australia, New Zealand, South America); ii) if F. magellanicus exhibit similar patterns as other Chilean ranellids; and iii) if F. magellanicus exhibit developmental attributes that define as long-distance broadcasters from cold water. F. magellanicus laid around 125 capsules/egg mass. Each contained an average of 2,789 ± 481 embryos, grouped in one circular arrangement. Mean eggs size was 180 μm. Encapsulated period lasted between 55 and 67 days at 10°C, and hatched larvae of 245 to 349 μm in shell length. Spawning occur during spring (October to November; 8°C) associated to an increment of freshwater discharge of San Juan River. A comparison of eggs/embryos/larvae abundance between temperate and tropical Ranellidae allow us to predict that Fusitriton magellanicus shows developmental attributes that indicate higher fecundity in relation to Chilean ranellids and that define it as a long-distance broadcaster.

2012

The tonnoidean gastropod fauna of French Polynesia (54 species) includes 26 species recorded from the Austral Islands (including 10 from Rapa), 33 species from the Marquesas Islands, 39 from the Society Islands, 32 from the Tuamotu Islands, and 3 from the Tarava Seamounts. Most species have planktotrophic larval development and are distributed from East Africa to eastern Polynesia, but many common western Pacific species are not present. With the possible exception of Semicassis salmonea n. sp. (Cassidae), described from the Marquesas, and Gyrineum pusillum (Ranellidae), restricted to the Austral (and Tuamotu?) Islands in southeastern-most Polynesia, no species is endemic to any individual island groups, but several species with broad overall ranges are known from only one archipelago within French Polynesia. Three species (Monoplex intermedius, Septa peasei, Ranellidae; Distorsio graceiellae, Personidae) are much more common in the Marquesas Islands than further westwards. Three species of Bursidae (Bursa lamarckii, Bursina nobilis, Tutufa tenuigranosa) are recorded only from the Marquesas Islands, whereas the only record of Bursina fijiensis is from the Austral Islands. The two very similar species Bursa asperrima and B. cruentata have a complex distribution; only B. cruentata is common west of Hawaii, and only B. asperrima occurs east of Hawaii, but only B. cruentata has been collected at the Marquesas Islands. Ranella venustula is a synonym of Bursa rhodostoma. Neotypes are designated for