Cytotoxic Activity of Antarctic Benthic Organisms Against the Common Sea Urchin Sterechinus neumayeri
نویسندگان
چکیده
منابع مشابه
Sea ice protects the embryos of the Antarctic sea urchin Sterechinus neumayeri from oxidative damage due to naturally enhanced levels of UV-B radiation.
The 'ozone hole' has caused an increase in ultraviolet B radiation (UV-B, 280-320 nm) penetrating Antarctic coastal marine ecosystems, however the direct effect of this enhanced UV-B on pelagic organisms remains unclear. Oxidative stress, the in vivo production of reactive oxygen species to levels high enough to overcome anti-oxidant defences, is a key outcome of exposure to solar radiation, ye...
متن کاملSeasonality of respiration and ammonium excretion in the Antarctic echinoid Sterechinus neumayeri
Oxygen consumption (MO2) and ammonium excretion rates were recorded monthly over 2 yr for the regular Antarctic echinoid Sterechinus neumayeri to investigate metabolic activity in relation to seasonal food limitation (i.e. phytoplankton standing stock) at Adelaide Island (67° 34’ S, 68° 07’ W). Phytoplankton standing stock showed a brief but intense summer bloom and extended winter minima chara...
متن کاملAnti-inflammatory activity in selected Antarctic benthic organisms
*Correspondence: Juan Moles, Department of Animal Biology (Invertebrates), Biodiversity Research Institute (IrBIO), Universitat de Barcelona, Av. Diagonal 643, 08028 Barcelona, Catalonia, Spain e-mail: [email protected] Antarctic benthos was prospected in search for anti-inflammatory activity in polar benthic invertebrates, in two different geographical areas: deep-bottoms of the Eastern ...
متن کاملBio-inspired design of ice-retardant devices based on benthic marine invertebrates: the effect of surface texture
Growth of ice on surfaces poses a challenge for both organisms and for devices that come into contact with liquids below the freezing point. Resistance of some organisms to ice formation and growth, either in subtidal environments (e.g., Antarctic anchor ice), or in environments with moisture and cold air (e.g., plants, intertidal) begs examination of how this is accomplished. Several factors m...
متن کاملLimited effects of Antarctic ozone depletion on sea urchin development
The sea urchin, Sterechinus neumayeri, has a circumpolar distribution and is an abundant species in benthic communities of the Antarctic. Reproduction occurs during austral spring, when ozone concentrations over the past 25 years have been reduced by 50% or more, potentially exposing the planktonic embryos and larvae to elevated levels of UVB. During spring of 1996, cultures of S. neumayeri emb...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Oceanography: Open Access
سال: 2013
ISSN: 2332-2632
DOI: 10.4172/2332-2632.1000107