In order to sustain an acceptable energy level for survival, why must organisms like the gull or fsh eat more than the organisms like the limpet or mussel?
Tag Archives: biology
Phenotypic flexibility in the metabolic response of the limpet Cellana tramoserica to thermally different microhabitats [An article from: Journal of Experimental Marine Biology and Ecology]
Phenotypic flexibility in the metabolic response of the limpet Cellana tramoserica to thermally different microhabitats [An article from: Journal of Experimental Marine Biology and Ecology]
This digital document is a journal article from Journal of Experimental Marine Biology and Ecology, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Temperature determines all physiological responses by limiting cellular reaction rates. Daily temperature variation differs between microhabitats, which means that subpopulations of the same species may respond differently to temperature. The aim of this study is to determine how physiological responses to temperature of the limpet Cellana tramoserica differ between limpets from variable and from stable thermal environments. Oxygen consumption and anaerobic and aerobic metabolic capacities were measured over a range of temperatures in limpets from thermally stable and variable field sites in summer and winter, and in laboratory acclimation treatments. Limpets from both variable and stable sites, showed acclimatisation of anaerobic and aerobic potentials. Limpets from stable environments, but not from variable environments, showed increased oxygen consumption in winter. Comparison of field and laboratory data showed that temperature was the signal for acclimatisation. The physiological response of C. tramoserica to temperature depends on season and microhabitat. Care must therefore be taken when conducting interspecies comparisons of response to temperature to address the confounding effects of phenotypic plasticity. Differences in physiological response to temperature in phenotypically flexible species like C. tramoserica may simply reflect individual reactions to immediate environmental conditions.
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6 Large Polished Hawaiian Oval Limpets Shells Seashells 2"-2.5" Craft
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Tagged article, biology, Cellana, different, Ecology, Experimental, flexibility, from, Journal, limpet, marine, metabolic, microhabitats, Phenotypic, response, thermally, tramoserica
Effects of competition on an endangered limpet Patella ferruginea (Gastropoda: Patellidae): Implications for conservation [An article from: Journal of Experimental Marine Biology and Ecology]
Effects of competition on an endangered limpet Patella ferruginea (Gastropoda: Patellidae): Implications for conservation [An article from: Journal of Experimental Marine Biology and Ecology]
This digital document is a journal article from Journal of Experimental Marine Biology and Ecology, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Spatial and trophic competitive interactions were analysed for the seldom-studied limpet Patella ferruginea (which is considered as an ”extinction risk”). Spatial patterns of distribution of P. ferruginea were studied using quadrats of 1×1 m^2 at several transects along the coastline, whereas trophic interactions were studied through manipulations of densities of P. ferruginea and Patella caerulea in experimental plots located at the mid-shore. Physical parameters were measured inside each plot to determine the microenvironmental differences between fenced and unfenced plots. Fenced plots of 50×50 cm^2 were used with six different treatments. Mortality was recorded every 15 days and length was measured monthly during the 3.5 months of the experiment. At the beginning and end of the experiment, lengths and weights of limpets were recorded and chlorophyll concentration was measured by spectrophotometric analysis of rock surface. Both species showed increased mortality and reduced size and weight in treatments with greater densities. High intraspecific competition was detected in P. caerulea compared with P. ferruginea whereas asymmetrical interspecific competition was observed. The results suggest that P. caerulea is the superior competitor, possibly due to differences in radular morphology and mobility between the two species. Microalgal food assessment showed that it is probably a limiting resource, especially for P. caerulea, although this species has a lower biomass than P. ferruginea. The high intraspecific competition observed in P. caerulea could be responsible for the coexistence of both species. The present study may be useful in helping to conserve P. ferruginea, which is presently under serious threat of extinction, because the results show that experimental fences are a viable means of concentrating breeding individuals.
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Modelling limpet dynamics in space and time (Department of Marine Ecology, Göteborg University)
Large (24 cm. tall) paperback. Text is in Englihs. Several graphs.
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Posted in Limpets
Tagged article, biology, competition, conservation, Ecology, Effects, endangered, Experimental, ferruginea, from, gastropoda, Implications, Journal, limpet, marine, patella, Patellidae
Biology Question! HELP!!!?
Heres the question:
Limpets are marine organisms that attach themselves to rocks. Under what enviormental conditions might intermediate forms of limpets- those that are tan, rather than white or dark brown- be at a disadvantage?
its about evolution and disruptive selection if that helps, thankss for the answers!!
i need help with my biology?
heres a problem i need help on.
limpets are marine organisms that attach themselves to rocks. under what environmental conditions would intermediate forms of limpets (those that are tan instead of white or dark brown) be at a disadvantage?
why is there a difference in the size of limpets on exposed and sheltered rocky shores?
BIOLOGY COURSEWORK.
i have some answers to this investigation but i want to bulk it out a bit more. if anyone has any ideas as to the answer or any other papers which are published online it would be very much appreciated.
Posted in Limpets
Tagged biology, biology coursework, coursework, difference, Limpets, rocky shores, size
Biology Question?
What organism is at trophic level 3 in this food chain
Seaweed—>Limpet—>Starfish—>Cod
is this chi square value really wrong? !!!?
i’m currently doing my stats test for my biology coursework and i think i have done the chi squared wrong although i have no idea how! i am working with two variables and 5 degrees of freedom investigating how the size of limpets relates to the type of shore. i got a huge chi result of 81.06 but the critical value is only 11.07 at 95%. is this really wrong or just very certain! lol. PLEASE help!
here’s a screen shot: http://i32.photobucket.com/albums/d33/rosiepony123/Chisquare.jpg
i need help with my biology?
heres a problem i need help on.
limpets are marine organisms that attach themselves to rocks. under what environmental conditions would intermediate forms of limpets (those that are tan instead of white or dark brown) be at a disadvantage?
why is there a difference in the size of limpets on exposed and sheltered rocky shores?
BIOLOGY COURSEWORK.
i have some answers to this investigation but i want to bulk it out a bit more. if anyone has any ideas as to the answer or any other papers which are published online it would be very much appreciated.
Posted in Limpets
Tagged biology, biology coursework, coursework, difference, Limpets, rocky shores, size