نتایج جستجو برای: sagitta
تعداد نتایج: 177 فیلتر نتایج به سال:
Age and growth of Bigeye Kilka, Clupeonella grimmi, were studied in Iranian waters of the Caspian Sea from early May 2006 to April 2007. The sagitta otoliths were removed for each 5 mm length interval up to a total number of 262 fish. Fork length and weight ranged from 92.5 to 142.5 mm and 4.2 g to 23.4 g, respectively. The largest length-groups was observed from December to February and the lo...
The detectability of charged SLAC-bag type structures is considered. These objects, known as Fermi balls, arise from the spontaneous symmetry breaking of a biased discrete symmetry in the early universe. Two classes of experimental searches are discussed. Since Fermi balls in the theoretically favoured mass range are absorbed by the atmosphere, direct experimental searches are confined to space...
—The Pearl River has experienced numerous human-caused disturbances since the 1950s, including completion of a navigation channel, reservoir construction, and channel modifications on the main stem of the river. These types of disturbances are known to negatively impact the biotic and abiotic components of riverine ecosystems. Since the 1960s, several fish species in the drainage have declined ...
Direct evidence is presented that the sagittae of nehu, Stolephorus purpureus, grow by discernible daily incrementa. Agmg by daily growth incrementa provides the means to establish a general growth curve for the filat 6 mo of life for this species. Adult nehu exhibit nearly linear growth between 30 and 60 mm standard length. Preliminary evidence is presented that the nehu population of Pearl Ha...
Responses of animals to individually experienced environmental conditions define the viability and distributions populations (Faillace et al., 2021). For aquatic ectotherms, water temperature is a key driver individual behaviour condition, due its direct indirect effects on physiological rates availability oxygen food (Rubalcaba 2020). Acquiring precise accurate data thermal experience organism...
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