2332-2632-CoastalZone-2016_Posters-Accepted-Abstracts

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Page 100
Coastal Zones 2016
May 16-18, 2016
Volume 4, Issue 1(Suppl) Oceanography 2016
ISSN:2332-2632, OCN an open access journal
conferenceseries .com
May 16-18, 2016 Osaka, Japan
Coastal Zones International Conference on
Oceanography 2016, 4:1(Suppl)
Conservation steps through confined breeding, sea ranching and evaluations of growth in natural
habitats of chosen sea horses and sacred conches along the South Eastern Indian coast
A P Lipton, M Thangaraj and M Selvakku
Manonmaniam Sundaranar University, India
S ea horse, Hippocampus trimaculatus obtained as by-catch from the shallow coastal habitats in the Gulf of Mannar and Palk
Bay coast of India and maintained in laboratory were observed for courtship and egg transfer. Spherical eggs measured
2.12±0.019 mm in length and 1.97±0.045 mm in width weighing 2.94±0.3 mg. After egg transfer, male’s pouch became water-
tight and pregnancy lasted for 12 to 14 days. The mean brood size of H. trimaculatus was 389±56.11. Newborn seahorses were
7.0±0.05 mm in length and 0.97±0.08 mg in weight. Feeding regimens were standardized. Juvenile sea horses captive-bred and
were collar tagged, released in the natural habitat and wide publicity was given to return the tagged seahorses. Data revealed
an average growth of 4.15 mm/month in the natural habitat. Sacred conch, Turbinella (=Xancus) pyrum collected from sea
bed up to 20 meters depth in the Gulf of Mannar, India and maintained in rectangular tanks containing sand substratum with
adequate sea water flow through were used for breeding trials. Brooders were fed ad libitum with live clams Donax cuneatus
and Donax faba. The release of egg capsules and the number of baby conches were recorded. Baby conches started growing
from an initial 9.09 mm length to 62.23 mm in length with an increase in shell diameter of 31.47 mm from 4.07 mm in 360
days. After tagging, the baby conches were sea-ranched in Gulf of Mannar with wide publicity for returning the recaptured
tagged conches. The recovery was14.6% and the average breadth-wise growth was 8.0 mm/year in nature.
Effect of water-accommodated fraction on the early life stage of Favites colemani (Veron, 2000)
El John S Engaño¹, Genevive B Bocalig¹, Ronald D Villanueva², Stephanie Faith Ravelo¹,², Nikki Dyanne C Realubit¹, Ramon P Luber¹
¹Adamson University, Philippines
²University of the Philippines, Philippines
Oil is one of the major pollutants in the marine ecosystem which has short and long-term effects upon its contact with
marine organisms especially corals. Coral organisms are sensitive to environmental changes which can affect their
breeding and growth, thus, making them bioindicators. For instance, the effect of this pollutant is manifested by the dramatic
deterioration of coral reefs in the coastal municipality of Bolinao in Northwestern Philippines. This study aimed to provide
benchmark information on the juvenile stage of Favites colemani,one of the coral species in Bolinao. In this study, a controlled
amount of two-day old Favites colemani larvae were subjected to different concentrations of water accommodated-fraction
(WAF) of diesel fuel oil condensate for 48-hours while surviving larvae were exposed to Crustose Coralline Algae (CCA) for
24 hours to test their competency. Results showed that there is a significant difference between the survival of the two-day old
Favites colemani larvae within 24 and 48 hours of exposure in diesel fuel oil condensate WAF; while there is no significant
difference on the settlement rate of larvae exposed to CCA. These results showed that time serves as an important determinant
of the survivability of corals since the possible response of the early life stage of corals is dependent on how long these are
exposed to oil contamination. Therefore, looking into the response of said corals gives an insight on what to expect when oil
spill occurs and what possible courses of actions are needed to prevent further degradation of coral organisms.