Gametogenesis and gonad mass cycles in the common circumpolar Antarctic echinoid Sterechinus neumayeri
نویسندگان
چکیده
منابع مشابه
Seasonality 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 کاملTopographic meandering of Antarctic Circumpolar Current and Antarctic Circumpolar Wave in the ice‐ocean‐ atmosphere system
[1] Topographic meandering of Antarctic Circumpolar Current (ACC) is found to be an impediment in the propagation of Antarctic Circumpolar Wave (ACW) in the Indian Ocean sector of Antarctica. Reasons for this are attributed to the southward advection of the ACW anomalies associated with the topographic meandering of the ACC. The southward meandering of ACC facilitates warming up of the region e...
متن کاملThe Antarctic Circumpolar Productivity Belt
[1] We illustrate the mechanisms controlling the spatial patterns of biological productivity in the Southern Ocean using a coupled, physical-biogeochemical-ecological model. The model captures a belt of enhanced export production, figuratively termed as the Antarctic Circumpolar Productivity Belt. As observed, there is a maximum in silica export to the south of the peak in the organic carbon ex...
متن کاملThe Physics of the Antarctic Circumpolar Current
This Article is brought to you for free and open access by the Center for Coastal Physical Oceanography at ODU Digital Commons. It has been accepted for inclusion in CCPO Publications by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. Repository Citation Nowlin, Worth D. and Klinck, John M., "The Physics of the Antarctic Circumpol...
متن کاملAdult acclimation to combined temperature and pH stressors significantly enhances reproductive outcomes compared to short-term exposures.
This study examined the effects of long-term culture under altered conditions on the Antarctic sea urchin, Sterechinus neumayeri. Sterechinus neumayeri was cultured under the combined environmental stressors of lowered pH (-0.3 and -0.5 pH units) and increased temperature (+2 °C) for 2 years. This time-scale covered two full reproductive cycles in this species and analyses included studies on b...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2007
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps330139