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Sains Malaysiana 45(4)(2016): 615–620 Culture of the Calanoid
Copepod, Acartia erythraea and Cyclopoid Copepod, Oithona
brevicornis with Various Microalgal Diets (Kultur Kopepod Kalanoid,
Acartia erythraea dan Kopepod Siklopoid, Oithona brevicornis
dengan Pelbagai Diet Mikroalga) MAYALAGU
RAJKUMAR1,2
& MOHAMMAD MUSTAFIZUR RAHMAN3,4* 1CASMB, Annamalai University,
Tamil Nadu, India 2Department of Marine
Science, Kulliyyah of Science, International Islamic University
Malaysia, 25200 Kuantan, Pahang
Darul Makmur, Malaysia 3Department of Marine
Science, Kulliyyah of Science, International Islamic University
Malaysia 25200 Kuantan, Pahang
Darul Makmur, Malaysia 4Inocem Research Station,
IIUM, Kg. Cherok Paloh, 26160 Kuantan, Pahang Darul Makmur Malaysia Received: 31 July 2014/Accepted:
3 November 2015 ABSTRACT Two experiments were
conducted to develop Acartia erythraea and Oithona
brevicornis cultures: The performance of five microalgal diets
to produce nauplii, copepodites and adults of A. erythraea;
and the performance of the same diets to produce nauplii, copepodites
and adults of O. brevicornis. The five different microalgal
diets were Isochrysis galbana (IG),
Chaetoceros affinis (CA), Chlorella marina (CM),
Nannochloropsis oculata (NO) and mixed algae (mixture of
IG,
CA,
CM
and NO at an equal abundance to provide the
exact cell density). The results indicated that the abundance
of both A. erythraea and O. brevicornis was higher
in tanks supplied with IG
and mixed algae than the tanks supplied with CA, CM and
NO.
IG
and mixed algal diets were statistically similar
on the mean abundance for both A. erythraea and O.
brevicornis. The maximum production of A. erythraea nauplii
was observed on day 12 of culture period and the nauplii production
decreased from day 13 onwards. The mean abundance of A. erythraea
copepodites and adults increased along with time up to the
end of the culture period. In the case of O. brevicornis nauplii,
the maximum abundance was observed on day 9 day of culture period
and the nauplii production decreased from day 10 onwards. The
mean abundance of O. brevicornis copepodites and adults
increased gradually from the beginning to the end of the culture
period. Under the experimental conditions of this study, both
IG and mixed algal diets can be recommended for the best
growth performance of A. erythraea and O. brevicornis. Keywords: Acartia erythraea; calanoid copepod; cyclopoid copepod; microalgal
diet; Oithona brevicornis ABSTRAK Dua eksperimen telah
dijalankan untuk menghasilkan kultur Acartia erythraea dan
Oithona brevicornis: Prestasi lima diet mikroalga untuk
menghasilkan nauplii, kopepodites dan dewasa A. erythraea;
dan prestasi diet yang sama untuk menghasilkan nauplii, kopepodites
dan dewasa O. brevicornis. Lima diet mikroalga tersebut
adalah Isochrysis
galbana (IG), Chaetoceros affinis (CA), Chlorella marina (CM),
Nannochloropsis oculata (NO) dan alga
campuran (campuran IG, CA,
CM dan NO pada jumlah
yang sama banyak untuk mendapatkan kepadatan sel yang tepat).
Keputusan menunjukkan bahawa bilangan kedua-dua A. erythraea
dan O. brevicornis adalah lebih tinggi di dalam tangki
yang dibekalkan dengan IG dan alga campuran daripada tangki yang dibekalkan
dengan CA, CM
dan NO. Diet IG dan alga campuran juga menunjukkan statistik
yang sama dalam purata kelimpahan kedua-dua A. erythraea dan
O. brevicornis. Bilangan maksimum naupli A. erythraea
diperhatikan pada hari ke-12 tempoh kultur dan pengeluaran
nauplii menurun bermula dari hari ke-13 dan seterusnya. Purata
kopepodites dan A. erythraea dewasa meningkat sejajar dengan
masa sehingga akhir tempoh kultur. Dalam kes naupli O. brevicornis,
kepadatan maksimum diperhatikan pada hari ke-9 tempoh kultur dan
pengeluaran nauplii menurun pada hari ke-10 dan seterusnya. Purata
kopepodites dan O. brevicornis dewasa meningkat secara
beransur-ansur dari awal hingga akhir ekeperimen. Di bawah keadaan
eksperimen dalam kajian ini, kedua-dua diet IG dan alga campuran
boleh disyorkan untuk prestasi pertumbuhan terbaik bagi A.
erythraea dan O. brevicornis. Kata kunci: Acartia erythraea;
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