Marine Biology
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Disinfection efficacy on cyst viability of Artemia franciscana (Crustacea), Hexarthra fennica (Rotifera) and Fabrea salina (Ciliophora)
Marine Biology - - 2003
Resting stages (cysts) of Artemia franciscana, Hexarthra fennica and Fabrea salina were exposed for two periods (acute and chronic exposures) to different concentrations of five aquaculture disinfectants (formalin, sodium hypochlorite, potassium permanganate, organic iodine, copper sulphate). The effects of chemical treatments were ranked according to their action on cyst hatching: total inhibitio...... hiện toàn bộ
Bleaching response of corals and their Symbiodinium communities in southern Africa
Marine Biology - Tập 156 - Trang 2049-2062 - 2009
The high-latitude coral communities of southern Africa suffered minimal impacts during past mass bleaching events. Recent reports indicate an increase in bleaching frequency during the last decade, yet the actual levels of thermal stress and contributing factors in these bleaching events, and the degree of acclimatisation or adaptation on these reefs are poorly understood. During the 2005 warm-wat...... hiện toàn bộ
Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean
Marine Biology - Tập 117 - Trang 171-183 - 1993
The distributional features and physical characteristics of 4830 krill (Euphausia superba Dana) aggregations detected acoustically in the Southwest Atlantic between 26 January and 21 February 1981 are described. Results are compared with aggregations detected in the Indian Ocean. Aggregations in the Atlantic were larger, closer to the surface and to each other than in the Indian Ocean. Similar pat...... hiện toàn bộ
No genetic differentiation of giant clam (Tridacna gigas) populations in the Great Barrier Reef, Australia
Marine Biology - Tập 113 - Trang 373-377 - 1992
Six Tridacna gigas populations were sampled in 1990 from locations throughout the central and northern Great Barrier Reef (GBR). Despite separations in excess of 1000 km, mean Nei's unbiased genetic distances among the populations was 0.0007. The complete lack of spatial variation observed among populations did not results from lack of genetic variability. Genetic variation within populations was ...... hiện toàn bộ
Genetic evidence of population heterogeneity and cryptic speciation in the ommastrephid squid Martialia hyadesi from the Patagonian Shelf and Antarctic Polar Frontal Zone
Marine Biology - - 1993
Effects of ocean warming and lowered pH on algal growth and palatability to a grazing gastropod
Marine Biology - - 2016
Macroalgae support productive and diverse communities in marine habitats worldwide, but are threatened by changes to ocean conditions and altered interactions with marine herbivores. To better understand how non-calcifying macroalgae can persist in a changing ocean, we investigated the effects of co-occurring warming and ocean acidification on six species of temperate macroalgae, and subsequent ch...... hiện toàn bộ
Heat tolerance, growth and regeneration in three North Sea bryozoans exposed to different constant temperatures
Marine Biology - Tập 15 - Trang 1-11 - 1972
Three species of bryozoans—Membranipora membranacea (L.), Electra pilosa (L.) and Conopeum reticulum (L.) — are capable of acclimating to elevated temperatures, above the normal range experienced in nature, when exposed to a gradual increase in ambient temperature. Conspicuous differences in LD 50 values, as a consequence of acclimation, occur between representatives of the same species acclimated...... hiện toàn bộ
Diving of the sea snakePelamis platurus in the Gulf of Panamá
Marine Biology - Tập 91 - Trang 181-191 - 1986
Fifteen yellow-bellied sea snakes,Pelamis platurus, fitted with pressure-sensitive ultrasonic transmitters, were tracked in the Gulf of Panamá during 1983–1985. Snakes spent up to 99.9% (
$$\bar x$$
= 87%) of the tracking time under water and dived to 50 m. The maximum voluntary submergence time observe...... hiện toàn bộ
Purple photosynthetic bacteria from a tropical mangrove environment
Marine Biology - Tập 110 - Trang 161-163 - 1991
Purple photosynthetic bacterial strains were isolated from mud samples collected from the mudflats of Pichavaram mangroves (Tamil Nadu, India) in 1989 and 1990. The presence of two major groups of photosynthetic purple bacteria was recorded, viz., Group 1: purple sulphur bacteria (family Chromatiaceae, strains belonging toChromatium sp.); and Group 2: purple nonsulphur bacteria (family Rhodospiril...... hiện toàn bộ
Estimation of scavenger abundance and distance of attraction to bait
Marine Biology - Tập 94 - Trang 431-443 - 1987
Patterns of arrival, times of first arrival on bait, and instantaneous numbers of animals on bait may be used to estimate abundance and distance of attraction for scavenging species of fish and invertebrates. A simple Gaussian odour plume model, which takes into account the rate of odour production by bait, chemosensory threshold of scavengers, swimming speed of scavengers relative to current velo...... hiện toàn bộ
Tổng số: 8,651
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