Hubungan Panjang Bobot dan Reproduksi Ikan Kembung Lelaki (Rastrelliger kanagurta) di Perairan Selat Malaka Tanjung Beringin Serdang Bedagai Sumatera Utara
5
ABSTRAK
JULIA SYAHRIANI HASIBUAN. Hubungan panjang bobot dan reproduksi ikan
kembung lelaki (Rastrelliger kanagurta) di Perairan Selat Malaka Tanjung
Beringin Serdang Bedagai Sumatera Utara. Dibimbing oleh MOHAMMAD
BASYUNI dan ANI SURYANTI.
Aktivitas penangkapan ikan kembung lelaki secara terus menerus akan
menyebabkan penurunan stok ikan kembung di alam. Penelitian ini bertujuan
mengetahui hubungan panjang bobot, faktor kondisi, reproduksi, ukuran pertama
kali matang gonad dan puncak pemijahan ikan kembung lelaki. Penelitian ini
dilaksanakan di perairan Selat Malaka kecamatan Tanjung beringin Serdang
Bedagai dari bulan Maret sampai Mei 2015 berdasarkan lokasi penangkapan ikan
oleh nelayan dibagi menjadi 3 stasiun dengan jarak 3,7 km dari bibir pantai dan
jarak antar stasiun masing-masing 1,8 km. Penangkapan ikan dan pengukuran
kualitas air dilakukan dengan rentang waktu 1 bulan. Hasil penelitian
menunjukkan persamaan hubungan panjang bobot y = 0,000007x 3,09 termasuk
allometrik positif. Faktor kondisi antara 1,12 – 1,18 yang tergolong kurang pipih.
Nisbah kelamin ikan dalam kondisi ideal. Nilai IKG betina 2,87% dan jantan
2,18%. Fekunditas antara 30.250 – 57.240 butir. Ukuran pertama kali matang
gonad adalah 164 – 170 mm. Hal ini menunjukkan keberadaan ikan kembung
lelaki memiliki puncak pemijahan pada bulan April. Hasil pengamatan histologi
gonad ikan betina menunjukkan TKG I didominasi spermatogonium, TKG II
didominasi spermatosit primer, TKG III didominasi spermatosit primer
berkembang menjadi spermatosit sekunder, TKG IV didominasi spermatozoa
untuk membuahi sel telur. Sementara histologi gonad ikan betina menunjukkan
TKG I didominasi oleh oogonia dan inti sel, TKG II terdapat oosit primer dan
oosit sekunder, TKG III didominasi oleh oosit tahap vitogenesis 1 dan 2, TKG IV
didominasi oleh oosit pada tahap vitelogenesis 2 dan 3 dengan ootid berkembang
yang siap untuk memijah dan TKG V didominasi oosit atresi. Tipe pemijahan
ikan kembung termasuk pemijahan bertahap.
Kata kunci : Ikan kembung, Pemijahan, Faktor Kondisi, Gonad, Histologi
Universitas Sumatera Utara
6
ABSTRACT
JULIA SYAHRIANI HASIBUAN. Relationship between length weight and
reproduction of indian mackerel (Rastrelliger kanagurta) in Malacca strait
Tanjung Beringin Serdang Bedagai North Sumatra. Under academy supervision
by MOHAMMAD BASYUNI and ANI SURYANTI.
Activities the continuous mackerel of catch will be decreasing fish stock in
the nature. The research aims to know relationship among length weight, factor of
condition, reproductive, first size riping ovum and apex spawning of mackerel.
This research was conducted in Malacca strait Tanjung Beringin Serdang Bedagai
from March until May 2015 based on the location of fishing by fishermen divided
into three stations at a distance of 3,7 kilometers from the beach and the distance
between each station was 1,8 kilometers. Water and fish sampling was carried out
for one month. The results showed length weight equation relationship
y = 0.000007x 3.09 indicating positive allometric. Factor conditions trend
1,12 – 1,18 were classified as less flat. Sex ratio of fish was ideal conditions.
Value of IKG between female 2,87% and male 2,18% respectively. Fecundity was
30.250 – 57.240 granule. First size riping ovum is 164 – 170 mm. This suggests
that the presence of the mackerel has a apex spawning in April. The observation
of the male histology showed that TKG I was spermatogonium, TKG II
dominated by primary spermatosit, TKG III was spermatosit primer developing to
be secondary spermatosit, TKG IV was spermatozoa for impregnate nucleus.
While the female histology showed that TKG I was dominated by oogonia and
cell nucleus, TKG II dominated by oocytes are primary and secondary, TKG III
dominated by vitogenesis stage 1 and 2 oocytes, TKG IV dominated by
vitelogenesis stage 2 and 3 with developing ootid that was ready to spawn and
TKG V dominated atresi oocytes. Spawning types of mackerel is partial spawner.
Keywords : Mackerel, Spawning, Factor condition, Ovum, Histology
Universitas Sumatera Utara
ABSTRAK
JULIA SYAHRIANI HASIBUAN. Hubungan panjang bobot dan reproduksi ikan
kembung lelaki (Rastrelliger kanagurta) di Perairan Selat Malaka Tanjung
Beringin Serdang Bedagai Sumatera Utara. Dibimbing oleh MOHAMMAD
BASYUNI dan ANI SURYANTI.
Aktivitas penangkapan ikan kembung lelaki secara terus menerus akan
menyebabkan penurunan stok ikan kembung di alam. Penelitian ini bertujuan
mengetahui hubungan panjang bobot, faktor kondisi, reproduksi, ukuran pertama
kali matang gonad dan puncak pemijahan ikan kembung lelaki. Penelitian ini
dilaksanakan di perairan Selat Malaka kecamatan Tanjung beringin Serdang
Bedagai dari bulan Maret sampai Mei 2015 berdasarkan lokasi penangkapan ikan
oleh nelayan dibagi menjadi 3 stasiun dengan jarak 3,7 km dari bibir pantai dan
jarak antar stasiun masing-masing 1,8 km. Penangkapan ikan dan pengukuran
kualitas air dilakukan dengan rentang waktu 1 bulan. Hasil penelitian
menunjukkan persamaan hubungan panjang bobot y = 0,000007x 3,09 termasuk
allometrik positif. Faktor kondisi antara 1,12 – 1,18 yang tergolong kurang pipih.
Nisbah kelamin ikan dalam kondisi ideal. Nilai IKG betina 2,87% dan jantan
2,18%. Fekunditas antara 30.250 – 57.240 butir. Ukuran pertama kali matang
gonad adalah 164 – 170 mm. Hal ini menunjukkan keberadaan ikan kembung
lelaki memiliki puncak pemijahan pada bulan April. Hasil pengamatan histologi
gonad ikan betina menunjukkan TKG I didominasi spermatogonium, TKG II
didominasi spermatosit primer, TKG III didominasi spermatosit primer
berkembang menjadi spermatosit sekunder, TKG IV didominasi spermatozoa
untuk membuahi sel telur. Sementara histologi gonad ikan betina menunjukkan
TKG I didominasi oleh oogonia dan inti sel, TKG II terdapat oosit primer dan
oosit sekunder, TKG III didominasi oleh oosit tahap vitogenesis 1 dan 2, TKG IV
didominasi oleh oosit pada tahap vitelogenesis 2 dan 3 dengan ootid berkembang
yang siap untuk memijah dan TKG V didominasi oosit atresi. Tipe pemijahan
ikan kembung termasuk pemijahan bertahap.
Kata kunci : Ikan kembung, Pemijahan, Faktor Kondisi, Gonad, Histologi
Universitas Sumatera Utara
6
ABSTRACT
JULIA SYAHRIANI HASIBUAN. Relationship between length weight and
reproduction of indian mackerel (Rastrelliger kanagurta) in Malacca strait
Tanjung Beringin Serdang Bedagai North Sumatra. Under academy supervision
by MOHAMMAD BASYUNI and ANI SURYANTI.
Activities the continuous mackerel of catch will be decreasing fish stock in
the nature. The research aims to know relationship among length weight, factor of
condition, reproductive, first size riping ovum and apex spawning of mackerel.
This research was conducted in Malacca strait Tanjung Beringin Serdang Bedagai
from March until May 2015 based on the location of fishing by fishermen divided
into three stations at a distance of 3,7 kilometers from the beach and the distance
between each station was 1,8 kilometers. Water and fish sampling was carried out
for one month. The results showed length weight equation relationship
y = 0.000007x 3.09 indicating positive allometric. Factor conditions trend
1,12 – 1,18 were classified as less flat. Sex ratio of fish was ideal conditions.
Value of IKG between female 2,87% and male 2,18% respectively. Fecundity was
30.250 – 57.240 granule. First size riping ovum is 164 – 170 mm. This suggests
that the presence of the mackerel has a apex spawning in April. The observation
of the male histology showed that TKG I was spermatogonium, TKG II
dominated by primary spermatosit, TKG III was spermatosit primer developing to
be secondary spermatosit, TKG IV was spermatozoa for impregnate nucleus.
While the female histology showed that TKG I was dominated by oogonia and
cell nucleus, TKG II dominated by oocytes are primary and secondary, TKG III
dominated by vitogenesis stage 1 and 2 oocytes, TKG IV dominated by
vitelogenesis stage 2 and 3 with developing ootid that was ready to spawn and
TKG V dominated atresi oocytes. Spawning types of mackerel is partial spawner.
Keywords : Mackerel, Spawning, Factor condition, Ovum, Histology
Universitas Sumatera Utara