66
5 KESIMPULAN DAN SARAN
5.1 Kesimpulan
Kesimpulan hasil penelitian ini adalah : 1. Cherax quadricarinatus telah menyebar hampir di seluruh Danau Maninjau
dengan ukuran beragam dan rasio kelamin jantan dan betina seimbang. 2. Persamaan pertumbuhan von Bertalanffy C. quadricarinatus di Danau
Maninjau adalah CL
t
=82 1-e
-1.2 t+0.09
3. Cherax quadricarinatus memijah dalam rentang waktu Mei-September dan puncaknya pada bulan Agustus.
4. Fekunditas ovari rata-rata adalah 626±255 dan fekunditas pleopod 383±173.
5. Kondisi kualitas air Danau Maninjau sesuai untuk kehidupan C.
quadricarinatus.
5.2 Saran
Pada penelitian ini lobster contoh yang tertangkap menggunakan alat tangkap rago dirasa masih kurang mewakili ukuran lobster sebenarnya di Danau
Maninjau terutama untuk lobster berukuran kecil. Oleh karena itu disarankan pada penelitian selanjutnya untuk menambah metode pengambilan contoh dengan
mencari lobster secara aktif langsung agar ukuran lobster yang diperoleh lebih beragam. Penelitian selanjutnya mengenai jejaring makanan di Danau Maninjau
setelah adanya lobster dan pengaruh lobster terhadap karakter fisik danau terkait kebiasaan meliangnya perlu dilakukan.
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LAMPIRAN
74 Lampiran 1 Stasiun pengambilan contoh
Bayur Sungai Batang
Batu Nanggai Sigiran
Sungai Tampang Utara
75 Lampiran 2 Alat tangkap experimental trap C. quadricarinatus
Lampiran 3 Nilai Tangkapan per Satuan Unit Upaya
Lokasi Bayur
Sungai Batang Batu Nanggai
Waktu Rago
1505 3105 3006 2508 0709 2109 1108 2408 0609 2009 1308 2408 0609 1
2 3
1 1
3 1
9 5
7 6
5 4
11 2
2 2
1 2
3 4
8 9
9 2
2 3
2 2
5 7
7 3
7 4
4 12
4 5
4 6
5 Total isi rago
4 5
2 1
5 10
27 22
28 26
7 13
20 TPSU
0.8 1
0.4 0.25
1.25 2.5
6.75 5.5
7 6.5
1.75 3.25
5 TPSU rata-rata
1.0 6.4
3.3 Lokasi
Sigiran Sungai Tampang
Utara Waktu
Rago 0206 1106 0107 1308 2408 0609 2009 0206 1308 2408 1505 0507 1208 2508 0709 2109
1 1
1 4
1 1
2 1
3 1
1 3
1 2
2 2
6 3
1 1
4 2
2 1
3 3
4 2
2 2
1 3
1 4
3 1
1 2
3 5
3 1
Total isi rago 10
1 15
3 1
3 3
1 2
10 1
1 8
9 3
6 TPSU
2 0.2
3 0.75
0.25 0.75
0.75 0.2
0.5 2.5
0.2 0.2
2 2.25
0.75 1.5
TPSU rata-rata 1.1
1.1 1.2
Keterangan : jumlah data masing-masing stasiun berbeda karena pencatatan tidak dilakukan pada tiap pengambilan contoh.
: jumlah rago berkurang menjadi 4 rago di masing-masing stasiun sejak pengambilan contoh bulan Agustus
77 Lampiran 4 Data ukuran lobster yang dipelihara
No JK
PT0mm CL0mm
Warna tagging PT1 CL1
Akuarium A 1
B 115
53.6 PH
2 J
90.65 43.45
H 3
J 4
B 85.45
42 P
5 J
99 49
K Akuarium B
1 J
81.6 40
H 2
B 111
52 PH
3 B
110 51
B 116.7
54.5 4
B 78
37.7 P
5 J
100 48
K Akuarium C
1 J
110.4 52.3
H 117
55 2
B 90
42.35 PH
96.8 44.75
3 B
84 40
B 95.4
43.9 4
J 111.85
53.3 P
56 5
J 94.9
46.8 K
Akuarium D 1
J 87.5
42.7 PH
2 J
119.9 59
H 3
J 82.3
40.7 B
4 B
101 49
P 111.3
53.55 5
J 84.75
41 K
Keterangan : lobster yang mengalami moulting
: H=hijau; PH=putih; B=biru; P=pink; K=kuning.
78 Lampiran 5 Data kualitas air di masing-masing stasiun
Bulan Lokasi
Utara Bayur
Sungai Batang Batu Nanggai Sigiran Sungai Tampang
Parameter kualitas air WQC Rata-rata