Preliminary results of spat collection of Rayed pearl oyster (Pinctadaradiata) in Turkey
Makaleler > Tam Makale · 2017
Yazarlar: Selçuk YİĞİTKURT, Aynur LÖK, Ali KIRTIK, Aysun Küçükdermenci, Evrim KURTAY
Ege Journal of Fisheries and Aquatic Sciences, Diğer Kurumların Hakemli Dergileri, Ulusal, TR Dizin (Ulakbim), 2017, cilt 34, ss 211-218
Özet
<p><span style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;">This research was carried out in Karantina Island to find pearl oyster (</span><i style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;">Pinctada radiata</i><span style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;"> Leach, 1814) spat collection efficiency of bag and shell collector types. Environmental limits such as temperature, salinity, chlorophyll-a, and total particulate matter (TPM) were monitored during the study period. The abundance of </span><i style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;">P.radiata</i><span style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;"> spat were found on the bag collector as 11.66±2.08 ind./0.91m</span><span style="position: relative; font-size: 8px; line-height: 0; vertical-align: baseline; top: -0.5em; color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; text-align: justify;">2</span><span style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;"> at the first time in August. At the same month the highest temperature and salinity were recorded as 27 ºC and 36.5‰, respectively. G2 (group 2/deployed on June 25) performed the highest spat collection for the bag collectors while G4 (deployed on August 29) for the shell collector was more successful during the research. A total of 172±34.39 </span><i style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;">P. radiata</i><span style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;"> spat were collected during the study. 119±22.60 (69.18%) individuals (ind) were harvested from bag collector and 53±11.78 (30.82%) from shell collector. While the avarege abundance of </span><i style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;">P. radiata</i><span style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;"> spat were 7.26 ind./m</span><span style="position: relative; font-size: 8px; line-height: 0; vertical-align: baseline; top: -0.5em; color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; text-align: justify;">2</span><span style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;"> on bag collectors, it was 3.23 ind./m</span><span style="position: relative; font-size: 8px; line-height: 0; vertical-align: baseline; top: -0.5em; color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; text-align: justify;">2</span><span style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;"> on the shell collectors. A significant difference was determined in the total abundance of </span><i style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;">P. radiata</i><span style="color: rgb(17, 17, 17); font-family: "Arial Narrow", sans-serif; font-size: 10.6667px; text-align: justify;"> between the collector groups (p<0.05). The length range of Pinctada spat on the bag collectors was between 4.47- 33.9 mm while it was 4.66-18 mm on the shell collectors. Fouling organisms (barnacles, polychaete, bryozoa) and predators (crabs, gastropods) of pearl oyster were also found on the collector groups. Results of the study established that bag collectors were more effective to collect the pearl oyster spat than the shell collectors.</span><br></p>