SPORT: With just days to go to Saturday’s Building Positive Clubs Conference in Colaiste Ailigh, Letterkenny, Donegal Sports Partnership are offering one lucky club a chance to win €1,000.Attendees at Saturday’s event can nominate a club of their choice to participate in the Building Positive Clubs Programme and also receive €1,000 worth of team wear from All Sports Donegal Town. To register online contact www.activedonegal.com or register through the Donegal Sports Partnership Office by phone 074 9116078 / 16079.Next Saturdays conference which runs from 12.30 to 4.30pm with input from a number of key speakers including Oisin Mc Conville, Alan O’Mara, Antonio Mantero, Peter Mitchell and Breifne Early.WIN €1,000 WORTH OF GEAR FOR YOUR CLUB AT DONEGAL SPORTS PARTNERSHIP CONFERENCE was last modified: May 23rd, 2016 by Mark ForkerShare this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Skype (Opens in new window)Click to print (Opens in new window) Tags:Club GearDONEGAL SPORTS PARTNERSHIPnewsSportSports
Experimental study on the effect of diet on fatty acid and stable isotope profiles of the squid Lolliguncula brevis
Fatty acid and stable isotope analyses have previously been used to investigate foraging patterns of fish, birds, marine mammals and most recently cephalopod species. To evaluate the application of these methods for dietary studies in squid, it is important to understand the degree to which fatty acid and stable isotope signatures of prey species are reflected in the squids’ tissue. Four groups of Lolliguncula brevis were fed on prey species with distinctly different fatty acid and stable isotope profiles over 30 consecutive days. One group of squid were fed fish for fifteen days, followed by crustaceans for a further fifteen days. A second and third group were fed exclusively on fish or crustaceans for thirty days. And a fourth group was fed on a mixture of fish and crustaceans for thirty days. Analysis of squid tissue showed that, after 10 days of feeding, fatty acid profiles of squid tended to reflect those of their prey. Squid that fed on a single prey type, i.e. fish or crustacean, showed only minor modifications in fatty acid proportions after the initial change and fatty acid profiles were clearly distinguishable between the two feeding groups. Shifts in fatty acid proportions towards respective prey profiles could clearly be observed in squid the diet of which was swapped after 15 days. Clear differences could also be seen in fatty acid profiles of squid feeding on a mixed diet with trends towards either fish or crustacean fatty acid signatures. Stable isotope signatures of squid tissues clearly distinguished between animals feeding on different diets and supported findings from fatty acid analysis, thus indicating both methods to be viable tools in feeding studies on squid species.