دورية أكاديمية
Effects of phlorotannin and nutrition concentration of brown seaweeds (Phaeophyceae) on feeding rates of the black sea hare Aplysia vaccaria.
| العنوان: | Effects of phlorotannin and nutrition concentration of brown seaweeds (Phaeophyceae) on feeding rates of the black sea hare Aplysia vaccaria. |
|---|---|
| المؤلفون: | Mchaskell, Danielle |
| المساهمون: | R. Smith, Jayson |
| بيانات النشر: | California State Polytechnic University, Pomona |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | marine ecosystems, phaeophyceae, aplysia vaccaria |
| الوصف: | In marine ecosystems, herbivory plays a vital role in ecosystem function and can drive community structure. Feeding selectivity by herbivores may be influenced by numerous factors, including seaweed nutritional value and palatability. For example, since most herbivores tend to be nitrogen limited, the consumption of nitrogen rich algae, with a low C:N, has been known to increase consumption. Furthermore, many seaweeds produce defensive chemical compounds which often result in reduced palatability and deterred consumption. However, the quantity of these deterrents varies among seaweed taxa and their effectiveness can differs among herbivores. The black sea hare, Aplysia vaccaria, is a voracious grazer in southern California shallow marine systems, reaching 14 kg within its 1-year life span. In controlled laboratory experiments, we preliminarily examined the relationship between consumption rates on various brown seaweeds by A. vaccaria and the concentration of phlorotannins, a defensive chemical, for each alga. In an herbivore with such high grazing rates, it was expected that the black sea hare would be an indiscriminant feeder and that phlorotannin concentrations would not play a role, despite affecting consumption in other herbivores. As expected, consumption of all seaweeds was high; however, a weak trend of reduced consumption of seaweeds with higher phlorotannin concentrations was observed. To further explore the role of phlorotannins on consumption rates of A. vaccaria, additional feeding experiments will be conducted. In addition, we will also examine whether the nutritional content of the seaweeds, using Carbon to Nitrogen ratios, will affect consumption rates. |
| نوع الوثيقة: | article in journal/newspaper audio |
| اللغة: | unknown |
| العلاقة: | http://hdl.handle.net/10211.3/202072Test |
| الإتاحة: | http://hdl.handle.net/10211.3/202072Test |
| حقوق: | http://www.cpp.edu/~broncoscholar/rightsreserved.htmlTest ; All rights reserved |
| رقم الانضمام: | edsbas.6282ADC4 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |