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Sains Malaysiana 48(2)(2019): 271–279
http://dx.doi.org/10.17576/jsm-2019-4802-02
Length-Weight Relationships, Condition Factor and
Growth Parameters of Periophthalmus chrysospilos (Bleeker,
1852) (Gobiiformes: Gobiidae) in Bayan Bay, Penang, Malaysia (Hubungan Panjang-Berat, Faktor Keadaan and Parameter
Tumbesaran Periophthalmus chrysospilos (Bleeker, 1852) (Gobiiformes:
Gobiidae) di Teluk Bayan, Pulau Pinang, Malaysia)
MOHD ILMAN CHE ABDULLAH*
& KHAIRONIZAM MD ZAIN
School of
Biological Sciences, Universiti Sains Malaysia, 11800 USM Main Campus, Penang, Malaysia
Received: 1
June 2018/Accepted: 12 October 2018
ABSTRACT
This study reports the length-weight
relationships (LWR), body condition factor (Kn)
and growth parameters of Periophthalmus chrysospilos in Bayan Bay of
Penang, Malaysia. The values of exponent b for all categories of fish
were higher than 3 indicating a positive allometric growth. The mean condition
factor (Kn) for all categories of fish also higher than 1 which
reflect the well beings of fish in the study area. The b values of LWR and
condition factors for male was similar to female fish, but the b values
of LWR and condition factors were significantly higher in
rainy months compared to the dry months. The parameters of population dynamic
show the asymptotic length (L∞) of 13.20 cm, growth coefficient (K) of
0.68 year-1, growth performance index (Ø’) of 2.074, total
mortality (Z) of 2.47 year-1, and fishing mortality (F)
of 0.70 year-1. The exploitation level (E) was 0.28 year-1 indicating
of low exploitation and estimation of length at first capture was 7.69 cm. The
annual recruitment pattern of P. chrysospilos was recruited in two peaks
per year.
Keywords: Allometric growth;
asymptotic length; mudskipper; recruitment pattern
ABSTRAK
Kajian ini melaporkan hubungan
panjang-berat (LWR), faktor keadaan (Kn) dan
parameter pertumbuhan Periophthalmus chrysospilos di Teluk Bayan,
Pulau Pinang, Malaysia. Nilai eksponen b bagi kesemua kategori ikan
adalah lebih tinggi daripada 3 yang menunjukkan pertumbuhan secara positif
alometrik. Faktor keadaan bagi kesemua kategori ikan juga lebih tinggi daripada
1 yang menunjukkan keadaan baik ikan di kawasan kajian. Nilai b hubungan
panjang-berat dan faktor keadaan bagi ikan jantan adalah sama dengan ikan
betina, walau bagaimana pun nilai b bagi hubungan panjang-berat dan
faktor keadaan adalah lebih tinggi secara signifikan semasa musim hujan
berbanding dengan musim kering. Parameter populasi dinamik menunjukkan panjang
asimptot (L∞) adalah 13.20 cm, pekali pertumbuhan (K) adalah 0.68 tahun-1,
indeks kemajuan pertumbuhan (Ø›) adalah 2.074, kadar kematian
keseluruhan (Z) adalah 2.47 tahun-1, kematian semasa tangkapan
(F) adalah 0.70 tahun-1. Aras eksplotasi (E) ikan adalah
0.28 tahun-1 menunjukkan ekploitasi yang rendah dan anggaran
panjang pada tangkapan yang pertama adalah 7.69 cm. Corak rekrut tahunan P.
chrysospilos adalah dua puncak setahun.
Kata
kunci: Corak rekrut; ikan belacak; panjang asimptot; tumbesaran alometrik
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*Corresponding author; email: mohdilmancheabdullah@gmail.com
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