Some Biological Parameters of Sprat Sprattus Sprattus Phalericus (risso1826) in the Turkish Black Sea Coast
نویسندگان
چکیده
Some biological parameters of the sprat, Sprattus sprattus phalericus, collected from Turkish Black Sea coast between 2008 and 2009 were investigated. Sprat is an important food resource for many top predators. In present work, length frequency distribution, relationship between length and weight, sex ratio and condition factor of sprat have been studied.
منابع مشابه
Accumulation of Trace Elements in Mussels, Fish and Marine Mammals from the Black Sea
During these lasts four decades, an increasing awareness has been provoked by chemicals deeply present in the environment. They can exert and cause deleterious effects on wildlife populations and human health. That is inextricably linked to the health of the environment. Elevated levels of pollutants in the watercolumn, in combination with high bioavailability of the pollutants, are likely to r...
متن کاملDepth-dependent nutritional condition of sprat Sprattus sprattus larvae in the central Bornholm Basin, Baltic Sea
Bimodal depth distribution patterns observed for sprat Sprattus sprattus larvae in previous field studies conducted in the deep basins of the Baltic Sea have led researchers to hypothesise that larval sprat condition was depth-dependent. We examined this hypothesis by measuring morphological, biochemical and otolith-based proxies for nutritional condition in sprat larvae collected in discrete 5...
متن کاملThe influence of temperature on the development of Baltic Sea sprat (Sprattus sprattus) eggs and yolk sac larvae
In spring 2004 and 2005 we performed two sets of experiments with Baltic sprat (Sprattus sprattus balticus Schneider) eggs and larvae from the Bornholm Basin simulating ten different temperature scenarios. The goal of the present study was to analyse and parameterise temperature effects on the duration of developmental stages, on the timing of important ontogenetic transitions, growth during th...
متن کاملA novel length back-calculation approach accounting for ontogenetic changes in the fish length – otolith size relationship during the early life of sprat (Sprattus sprattus)
An individual-based length back-calculation method was developed for juvenile Baltic sprat (Sprattus sprattus), accounting for ontogenetic changes in the relationship between fish length and otolith length. In sprat, metamorphosis from larvae to juveniles is characterized by the coincidence of low length growth, strong growth in body height, and maximal otolith growth. Consequently, the method ...
متن کاملRegional trade-offs from multi-species maximum sustainable yield (MMSY) management options
The maximum sustainable yield (MSY) is, theoretically, the largest yield that can be taken from a single species’ stock over an indefinite period. Formulation of strategic MSY management goals is, however, complicated by the need to move beyond biological single-species considerations. Interactions among species necessitate multispecies (MMSY) definitions, incorporating ecological, economic and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2015