Small coastal dolphins endemic to south-eastern Australia have variously been assigned described species Tursiops truncatus, T. aduncus or maugeanus; however the specific affinities of these animals is controversial and recently questioned. Historically 'the southern Australian Tursiops' was identified as unique formally named maugeanus but later synonymised with truncatus. Morphologically, share some characters both aforementioned recognised species, they also possess not found in either....

Abstract Estimating the biomass of gas-bladdered organisms in mesopelagic ocean is a simple first step to understanding ecosystem structure. An existing two-frequency (38 and 120 kHz) acoustic optical probe was lowered 950 m estimate number size gas-bladders. In situ target strengths from 38 kHz their difference were compared with those gas-bladder resonance-scattering model. Predicted mean equivalent spherical radius varied depth, ranging 2.1 mm (shallow) 0.6 (deep). Density night-time...

Dangerous marine stingers (jellyfish) are an emotive issue in tropical Australia, where they widely regarded as the number one health threat. However, numerous severe and fatal stings have been reported throughout temperate seas of world, indicating that a global problem. Further, life-threatening jellyfish more frequently globally now compared to earlier decades, possibly result improved recognition reporting, or increased spatial and/or temporal distribution densities. As stinging...

the Governor of Phuket released a media statement: ''people throughout region should be alerted to dangers box jellyfish.'' 1Two days later, Minister for Natural Resources and Environment also released: ''People swimming in sea where jellyfish are present exercise caution.'' 2 Quickly, travel advisories were posted on numerous government web sites, including Australia, United States, Thailand.Internet search provides modest estimate confusion this caused, as most people, previously unaware...

Jellyfish are a common cause of injury throughout the world, with fatalities and severe systemic events not uncommon after tropical stings. The internet is recent innovation to gain information on real-time health issues travel destinations, including Southeast Asia.We applied model internet-based retrospective data aggregation, through Divers Alert Network Asia-Pacific (DAN AP), together more conventional methods literature media searches, document significance, clinical spectrum, box...

<p dir="ltr">A resplendence of poets could not conceive something so exquisite as the kaleidoscope nature’s nocturnal glow. For first time, this paper presents an overview Tasmania’s luminous phenomena: Aurora Australis, or Southern Lights; Sea Sparkles, marine bioluminescence Noctiluca scintillans; Glow-worms Arachnocampa tasmaniensis; Ghost Mushrooms Omphalotus nidiformis and other fungi; fluorescent scorpions Cercophonius squama; marsupials (14 species), placental mammals (five...

Two new jellyfishes are described from the waters off northwestern Australia. The first, Carukia shinju n. sp., is similar to common Queensland Irukandji barnesi, but differs latter in having a larger body size, branched velarial canals, nematocyst warts on both canals and perradial lappets, fully-spined tentacular shafts, about 14 naked ringlets between adjacent bands, long, narrow, capitate rhopaliar horns. second, Malo maxima gen. distinctive other known cubozoan species by its unique...

SUMMARY 1. We have investigated the cardiovascular pharmacology of crude venom extract (CVE) from potentially lethal, very small carybdeid jellyfish Carukia barnesi , in rat, guinea‐pig and human isolated tissues anaesthetized piglets. 2. In rat right atria, CVE (0.1–10 µg/mL) caused tachycardia presence atropine (1 µmol/L), a response almost completely abolished by pretreatment with tetrodotoxin (TTX; 0.1 µmol/L). paced left atria or (0.1–3 positive inotropic 3. mesenteric arteries, (0.1–30...

Nematocysts (stinging organelles) are an important part of cnidarian identification, but the cnidomes many species remain poorly known because identification difficulties and confusing nomenclature. Currently, 20 cubozoan documented in whole or (including four undescribed five newly described species); 18 these re-examined detail, 13 presented. Type material was used for studies where possible. A new category nematocyst is designated, namely ‘p-rhopaloid’, characterized by having a v-shaped...

Irukandji stings may be lethal to humans, and yet, until late 2005, only one of the many suspected stingers had been formally named classified. This paper describes Malo kingi, n. sp., which is apparently responsible for a recent fatality. species differs from all other cubozoans in having halo-like rings tissue encircling tentacles, with club-shaped Type 4 microbasic mastigophores inserted end-on around periphery rings. It further its current congener, maxima, having: much smaller, more...

Two specimens of an unknown jellyfish species were collected in Bat Gallim and Beit Yannai, on the Mediterranean coast Israel, June July 2010. Morphological characters identified it as a cepheid (Cnidaria, Scyphozoa, Rhizostomeae). However, showed remarkable differences from other genera; unlike Cephea Netrostoma lacks warts or knobs centrally exumbrella filaments oral disk between mouths, differs Cotylorhiza its proximally loose anastomosed radial canals lacking stalked suckers moutharms....

The potentially fatal Irukandji syndrome is relatively common in tropical waters throughout the world. It caused by sting of jellyfish, a family box jellyfish that are almost impossible to detect water owing their small size and transparency. Using collated medical records stings local weather conditions, we show presence blooms coastal can be forecast on basis wind conditions. On Great Barrier Reef, largely coincide with relaxation prevailing southeasterly trade winds, average conditions...

The nomenclature and identity of Chiropsalmus quadrigatus have been extensively confused. Originally described from Rangoon, Burma, based on an immature badly damaged specimen, subsequent Philippine Australian redescriptions do not match primary characters the holotype. This has led to widespread messiness in identification classification this related species. In order clarify Chiropsalmus-type cubomedusae, a preliminary revision Chiropsalmidae is given. Chiropsoides comb. nov. proposed,...

Research Article| July 01, 1999 Cnidarian-like embryos associated with the first shelly fossils in Siberia Artem Kouchinsky; Kouchinsky 1Department of Geosciences, Historical Geology and Palaeontology, Norbyvägen 22, SE-752 36 Uppsala, Sweden Search for other works by this author on: GSW Google Scholar Stefan Bengtson; Bengtson 2Department Palaeozoology, Swedish Museum Natural History, Box 50007, SE-104 05 Stockholm, Lisa-ann Gershwin 3Museum Paleontology, University California, Berkeley,...

Abstract The nomenclature of the purple-striped jellyfish from southern California, currently known as Pelagia colorata Russell, 1964, is apparently in error. Our cladistic analysis 20 characters for 15 pelagiid species indicates that P. shares a common evolutionary history with members genus Chrysaora. There appears to be number shared among Chrysaora due ancestry, including distinctive pattern nematocyst patches ephyra, well deep rhopaliar pits and star-shaped exumbrellar marks medusa. In...

The hypothesis that the common eastern North Pacific Aurelia is A. aurita falsified with morphological analysis. name labiata resurrected, and species redescribed, to refer medusae differing from by a suite of characters related broad elongated manubrium. Specifically, oral arms are short, separated arising base fleshy manubrium, planulae brooded upon manubrium itself, rather than on arms. possesses no corresponding enlarged structure. Furthermore, number radial canals typically much greater...

ABSTRACT. Ellobiopsids are multinucleate protist parasites of aquatic crustaceans that possess a nutrient absorbing ‘root’ inside the host and reproductive structures protrude through carapace. have variously been affiliated with fungi, ‘colorless algae’, dinoflagellates, although no morphological character has identified definitively alh'es them any particular eukaryotic lineage. The arrangement trailing circumferential flagella rarely observed bi‐flagellated ‘zoospore’ is reminiscent...