Spatio-Temporal Distribution of Ichthyoplankton in Manila Bay in Relation to Oceanographic Conditions Marvin L. Tobias, Angelica Gabrielle A. Sy, Valeriano M. Borja, Ephrime B. Metillo, Mudjekeewis D. Santos and Elsa F. Furio 6
By: 4 0 16 [, ] | [, ] |
Contributor(s): Fisheries Resources and Ecological Assessment of Manila Bay 2012-2015. c2016. pp.83-94 5 6 [] |
Language: Unknown language code Summary language: Unknown language code Original language: Unknown language code Series: ; 201646Edition: Description: Content type: text Media type: unmediated Carrier type: volumeISBN: ISSN: 2Other title: 6 []Uniform titles: | | Subject(s): -- 2 -- 0 -- -- | -- 2 -- 0 -- 6 -- | 2 0 -- | -- -- 20 -- | | -- -- Manila Bay Ichthyoplankton -- -- -- | -- -- -- 20 -- --Genre/Form: -- 2 -- Additional physical formats: DDC classification: | LOC classification: | | 2Other classification:| Item type | Current location | Home library | Collection | Call number | Status | Date due | Barcode | Item holds |
|---|---|---|---|---|---|---|---|---|
| Book | PLM | PLM Periodicals Section | Periodicals | SH1.P538 (Browse shelf) | Available | PER1893E |
ABSTRACT ; Manila Bay faces serious problem today such as pollution, coastal area reclamation and infrastructure, overfishing and other activities that worsen the presentcondition was carried out to determine their distribution , abundance and composition in the bay. Eight established sampling stations were placed throughout the bay with the average distance of 5-6 nautical miles apart and sampled evry other month on mosoonal basis. Bongo net (360 microns mesh size, 1.5 meters in lenght, and diameter of 50 centimeter mouth opening) with attached calibrated flowmeter was used in collecting fish larvae. Physical (salnity, temperature), chemical (nitrite, nitrate, phostphate, silicate, dissolved oxygen), and biological (phytoplankton, and zooplankton) parameters were also carefully studied to be to explain such uncommon event within bay. In spite of the current status and worsening condition of water quality of the bay, high abundances of fish eggs and larvae were consistently observed during the northeast monsoon survey (March) from 2012 to 2015. A total of 3,008 individuals were identified belonging to 34 fish families. The highest fish egg density was observed during march 2013 with 1,550 ind,/100m, followed by March 2012 and 2015 with 1,484 ind/100m, followed by March 2012 with density of 132 ind/100m fish eggs and 46 ind/100m fish larvae. The results were consistent that most fish eggs aggregates in the middle part of the bay especially in Stations 4 and 2 from 2012-2015. For fish larvae, they were consistently found in the eastern part of the bay (stations 6, 8, and 7) thoughout the duration of the study, it was also the areas where high concetrations of phytoplankton, zooplankton, and nutrients were observed. High abundance of fish eggs and fish larvae was observed during northeast monsoon than southwest monsoon. In addition, fish larvae family was dominant fish families found were Clupeidae, followed Leiognathiade and Nemipteriade. other groups that include in the top five abundant families that occur every sampling period were Sillaginidae and Mugilidae. 56
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