4.2 C/N ratio
4.3.1 ӕՏનӧಔᙃϣޑᡂ
ԶقǴռணᆶط᠌ޑį13Cǵį15N ॶ֡КқԺե(Doucett et al. 1999ǹJardine et al. 2004)ǴӢࣁಔᙃӧિ፦ғԋբҔ(lipogenesis)ਔख़ޑӕՏન܌՞КٯၨϿǴ ӢԜ֖િ፦ޑಔᙃԖၨᇸޑį13C ॶǴӵआԺǵط᠌ǵռணǶғဏӢࣁԖ ռηǵᆒηԶ֖ၨӭિ፦Ϸೈқ፦Ǵࡺ֖ၨᇸޑį13Cǵį15NǶط᠌߾ࣁжᖴǵ
ԋૈໆޑЬाᏔ۔Ǵҭࣁ१ނϯࡕᓯӸૈໆޑಃઠǴࡺӕՏનኧॶௗ߈१ ނྍԖၨᇸޑӕՏનኧॶǶԶқԺϣ܌֖ޑિ፦ၨط᠌ϷғဏࣁϿǴҭࣁങᡏ ᓯӸૈໆޑനಖ܌(Jardine et al. 2005)ǴࡺᛙۓӕՏનኧॶനեǴҭനࣁᛙۓǴ ᡂӧ2‰аϣǶԶữ୷ለϩှၸำύޑᙯữբҔ(transamination)Ꮴठ15N ޑ ቚу(Macko et al. 1986)ǴЀځࢂӧ१ނόى܈ғނ٬Ҕಔᙃϣ֖ޑೈқ፦܈Ԗᐒ
ේਔ(Hobson et al. 1993; Doucett et al. 1999; Jardine et al. 2004)ǴӢԜ į15N ϲ߄ Ң၀ಔᙃϣޑữ୷ለϷځдԖᐒේ֖ໆϲଯǶ
ᛙۓӕՏનϩࢂଓᙫғނ१ނٰྍޑᅿБݤǶҗܭങᡏϣόӕಔᙃᛙۓ ӕՏનޑඹඤೲόӕǴӢԜૈϸࢀр१ނྍޑਔ໔ΨόኬǶ१ނྍޑᛙۓ ӕՏનӧങޑط᠌ሡाऊঁДǴԶқԺሡाѤډϖঁДωૈϸࢀрٰǴவᡂ
ጄൎޑৡ౦Ψё࣮рಔᙃ໔ԖόӕޑඹඤೲǴط᠌ޑᡂጄൎࣁқԺޑΟ७а
(Perga and Gerdeaux 2005)ǶҁࣴزҭᢀჸډԜຝǴғဏᆶط᠌ޑӕՏન į13Cǵį15N ᡂጄൎελࣣࣁқԺޑΒډΟ७Ǵങޑط᠌׳ёၲѤ७Ƕ
4.3.2 ӕՏનӧಔᙃ໔ޑৡ౦
ങᜪғਔǴሟଛη໔ӧނ፦ಔԋԖ܌ৡ౦ǺռηٮᔈڙᆒռᎦϩǴሡ
ၨӭޑԖᐒᅹǴԶᆒηᄬڀԖၨӭޑೈқ፦ԋϩǴόၸӧᕴໆǴռηሡाၨ
20
ӭޑૈໆၗ(Jonsson et al. 1991)ǴҭջሟങޑғဏӧวػਔǴሡाεໆޑિ
፦ǴٯӵҔаౢғռǵݨౚǴΨӢԜǴځғဏڀԖၨଯޑC/N ॶǶ ط᠌ࢂॄೢങᡏឪ१ࡕᔼᎦ֎ԏϷжᖴޑЬा܌Ǵࡺаط᠌ࣁ୷ྗǴКၨ
ځдಔᙃᆶط᠌ӧᛙۓӕՏનኧॶޑৡ౦Ǵᙖаૈໆӧಔᙃ໔ޑᙯ౽
Ƕ
િ፦ਠ҅ࡕǴങᆶሟങط᠌ޑį13CƍॶǴᆶচٰޑ į13C ॶቚуΑ 2‰а
ǴғဏᆶқԺ߾ӧ2‰аΠǴ೭٤ᡂᡉҢિ፦֖ໆჹ į13C ޑቹៜࡐεǶа
િ፦ਠ҅ࡕޑį13CƍॶࣁਥᏵǴ܌ᢀჸډಔᙃ໔ᔼᎦނ፦ࢬᙯၨૈ಄ӝჴሞݩǶ
ങғဏکط᠌į13Cƍϐ໔ޑৡ౦Ǵևр҅ॄ࣬໔Ǵ٠ЪځϩѲ҂ڙ GSI ޑ ቹៜ(კΜΖ e)ǴᡉҢങғဏύޑԖᐒᅹ܈ߚޔௗவ१ނط᠌ᙯ౽ၸٰǶ ӧќБय़ǴԜॄॶᒿHSI ޑቚуԶቚу(კΜΖ f)ǴᡉҢନΑિ፦ѦǴ१ނ ϣځдޑԖᐒᅹᒿط᠌ᡂεԶΕങޑғဏǹқԺᆶط᠌ޑį13Cƍৡॶ ҭԖᜪ՟ޑຝ(კΜΖ gǵh)ǴᡉҢқԺԾيᓯӸԖિ፦ǴՠځдޑԖᐒᅹ߾வ ط᠌ံкǴ٠ᒿط᠌ᡂεԶቚуǶ
ӧį15N Бय़Ǵങғဏᆶط᠌ޑৡॶεϩࣁॄॶ(კΜΐ aǵb)ǴᡉҢ Ԗᐒේёૈࢂҗط᠌ሀԿғဏǴՠόڙډғဏϷط᠌ελ܌ቹៜǶқԺᆶ ط᠌ޑৡॶ߾ࣣࣁ҅ॶ(კΜΐ cǵd)Ǵёૈ߄ҢқԺ٬ҔԖᐒේޑೲεܭط᠌
ံкԖᐒේޑೲǴҭԖёૈӢқԺ֖ԖၨӭߚѸሡữ୷ለ(Peterson et al. 1993ǹ Pinnegar and Polunin 1999ǹJohnson et al. 2002ǹBunn et al. 2003ǹJardine et al.
2005)Ƕ
ӧሟങғဏᆶط᠌໔ӕՏનį13CƍǴӧ GSIɩ3 ਔǴ҅ॄᡂጄൎၲ 3‰Ǵ GSI >3 ਔǴ߾ᡂጄൎᡂλǴՠॄॶၨӭ(კΒΜ e)ǶԋԜຝޑচӢёૈࣁ
҂วػϷ௨ռࡕޑঁᡏ֡ևեGSIǴѦᢀࠠᄊϷख़ໆ࣬՟ǴՠࢂϣޑԖᐒᅹ
ٰྍࠅԖ܌όӕ—҂วػޑঁᡏԖၨख़ޑԖᐒᅹǴЪۘ҂வط᠌ᙯΕǴӢԜځৡ ॶࣁ҅ॶǹ௨ռࡕޑঁᡏғဏϣϝ֖Ԗ҂௨рޑռǴ֖ၨᇸޑԖᐒᅹǴԶԜᅹ
ྍࣁวػය໔ޔௗྍԾܭط᠌ǴࡺৡॶࣁॄǶ
ӧį15N Бय़Ǵሟ܄ঁᡏғጕᆶط᠌ޑৡ౦Ǵа҅ॶۚӭ(კΒΜ aǵb)Ǵ
21
߄ҢሟങޑғဏӧวػޑၸำύǴځೈқ፦٠ߚޔௗྍԾط᠌Ǵ܈ޣط᠌٠҂
ගٮځཥளԾܭ१ނޑೈқ፦Ƕ
4.4!่ፕ!
ҁࣴزᆕӝC/N ratioǵᛙۓӕՏનޑၗǴޕᙔᆘӀភഒ᜶ޑሟ܄ঁᡏ ӧғਔط᠌౽ᙯિ፦ϷځдԖᐒᅹԿғဏǴӕਔқԺ߾வط᠌ံкિ፦а ѦޑԖᐒᅹǶԶങғਔط᠌ᒡଌೈқ፦ǵԖᐒᅹԿғဏǴΨᙯ౽Ԗᐒ ᅹԿқԺಔᙃǶᙔᆘӀភഒ᜶Ӣᔈғਔ܌ሡޑૈໆӭ߯ྍԾܭط᠌ǴҭջளԾ ܭ܌ឪ१ޑ१ނǴૈໆޑϩଛБԄӧሟ໔Ԗ܌όӕǶҁങᅿӧࣴزӦᗺಖԃ
ࣣрԖғຝǴ೭ΨᡉҢᕉნύຼԃёаගٮىޑᔼᎦٰྍǴаٮځ
ՉғϐҔǶ
22
ҴǵୖԵЎ
Шᄪ (1989) Ꮬ୯ৎϦ༜ੇୱౢഒ᜶ࣽങᜪឪ१ғᄊᏢϐࣴزǶ୯ҥᆵε ᏢᅺγፕЎǶ141 ।
ഋފ (1991) ᆵчੇ۞ᡂՅഒ᜶ϐғғᄊࣴزǶ୯ҥᆵεᏢᅺγፕЎǶ 60 ।
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26
ഌǵკ
(a) (b)
(c) (d)
(e) (f)
კǵᙔᆘӀភഒ᜶ྣТϷ௦ኬՏკ
(a) ᙔᆘӀភഒ᜶(Chromis viridis)ᡏՅǹ(b) ᙔᆘӀភഒ᜶ғՅǹ (c) ങဂӧНቫύ१ǹ(d) ങဂӧ۟༧ғᆫޑݩǹ
(e) ௦ኬՏკ(კύጂᓐ߄ҢНࢬБӛ) (f) ௦ኬӦᗺՏკǶ
27 (a) Male
Percentages of food items
0 20 40 60 80 100
(b)Female
Jan-2011 Feb-2011
Mar-2011 Apr-2011
May-2011 Jun-2011
Jul-2011 Aug-2011
Sep-2011 Oct-2011
Nov-2011 Dec-2011
Jan-2012 Feb-2012 0
20 40 60 80 100
copepod chaetognatha egg
algae fish shrimp polychaete isopod scale unidentified
კΒǵᙔᆘӀភഒ᜶गϣ֖ނಔԋᡏᑈԭϩК (Male, total n = 78; Female, total n = 81)
28
1. Temora Scale = 1.0mm 2. Eucalanus Scale = 1.0mm
3. Eucheata Scale = 0.5mm 4. Chaetognatha Scale = 1.0mm
5. Fish Scale = 1.0mm 6. Shrimp Scale = 1.0mm
7. Algae Scale = 0.5mm 8.Fish eggs Scale = 1.0mm კΟǵှওᡉ༾᜔ϣ܌ᡉޑόӕगϣ֖ނკҢǶ
29
16 (b) female
Jan2011
3.5 (d) female
Jan2011 (d)ሟങط᠌ᡏࡰኧ HSIǹ(e)ങဉᛠጢᡏࡰኧ MFIǹ(f)ሟങဉᛠጢᡏࡰኧ MFIǶ (ᗺࣁ outlierǴጕࣁѳ֡ኧǴჴጕࣁύՏኧ)
30
(a)2012 ԃ 1 Дങᆒண(GSI=0.485) (b)2011 ԃ 6 Дങ(GSI=0.304) (ు๋Յϩࣁԋዕᆒη(spermatozoa)Ǵጂᓐೀࣁᆒη௨ܫࡕϐޜ๚)
(c)2011 ԃ 1 Дങ(GSI=0.147) (d)2011 ԃ 1 Дങ(GSI=0.176) (Յጂᓐࣁԛભᆒ҆ಒझ(secondary spermatocyte)ǴқՅጂᓐࣁᆒη)
(e)2011 ԃ 1 Д҂ԋዕයϐሟങ(GSI=0.54) (f)2011 ԃ 6 Дวػࡕයሟങ(GSI=0.595)
კϖǵғဏಔᙃϪТკ
(a)2012 ԃ 1 ДങᆒணϐಔᙃϪТǹ(b)2011 ԃ 6 ДങᆒணϐಔᙃϪТǹ (c)2011 ԃ 1 ДങᆒணϐಔᙃϪТǹ(d)2011 ԃ 1 ДങᆒணϐಔᙃϪТǹ (e)2011 ԃ 1 ДሟങռணϐಔᙃϪТǹ(f)2011 ԃ 6 ДሟങռணϐಔᙃϪТǶ
31
(b) Male - White muscle
Jan-2011
(e) Female - White muscle
Jan-2011
(f) Female - Liver
Jan-2011
32
33
34
White muscle
Jan2011
35
36
37
38
GSI
0 5 10 15 20
δ13C
-22 -21 -20 -19 -18 -17
HSI
1 2 3 4
δ13C
-22 -21 -20 -19 -18 -17
(a)ሟങғဏ į13C ᆶ GSI ޑϩѲᜢ߯კ (b)ሟങғဏ į13C ᆶ HSI ޑϩѲᜢ߯კ y = -18.658 – 0.364x + 0.022x2ǴR2 = 0.317Ǵp < 0.001 y = -18.068 – 1.49x + 0.299x2ǴR2 = 0.080Ǵp = 0.005
GSI
0 5 10 15 20
δ15N
5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5
HSI
1 2 3 4
δ15N
5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5
(c)ሟങғဏ į15N ᆶ GSI ޑϩѲᜢ߯კ (d)ሟങғဏ į15N ᆶ HSI ޑϩѲᜢ߯კ
y = 7.695 + 0.116x – 0.009x2ǴR2 = 0.034Ǵp = 0.11 y = 8.494 -0.858x + 0.275x2ǴR2 = 0.078Ǵp = 0.006
კΜΟǵሟങғဏį13Cǵį15N ᆶ GSIǵHSI ϐϩѲᜢ߯კ
39
GSI
0 2 4 6 8 10 12 14 16 18 20
δ13C
-20.0 -19.5 -19.0 -18.5 -18.0 -17.5 -17.0
HSI
1 2 3 4
δ13C
-20.0 -19.5 -19.0 -18.5 -18.0 -17.5 -17.0
(a)ሟങқԺ į13C ᆶ GSI ޑϩѲᜢ߯კ (b)ሟങқԺ į13C ᆶ HSI ޑϩѲᜢ߯კ
GSI
0 2 4 6 8 10 12 14 16 18 20
δ15N
8.8 9.0 9.2 9.4 9.6 9.8 10.0 10.2 10.4
HSI
1 2 3 4
δ15N
8.8 9.0 9.2 9.4 9.6 9.8 10.0 10.2 10.4
(c)ሟങқԺ į15N ᆶ GSI ޑϩѲᜢ߯კ (d)ሟങқԺ į15N ᆶ HSI ޑϩѲᜢ߯კ y = 9.666 – 0.023xǴR2 = 0.088Ǵp = 0.001
კΜѤǵሟങқԺį13Cǵį15N ᆶ GSIǵHSI ϐϩѲᜢ߯კ
40
GSI
0 2 4 6 8 10 12 14 16 18 20
δ13C
-24 -23 -22 -21 -20 -19 -18
HSI
1 2 3 4
δ13C
-24 -23 -22 -21 -20 -19 -18
(a)ሟങط᠌ į13C ᆶ GSI ޑϩѲᜢ߯კ (b)ሟങط᠌ į13C ᆶ HSI ޑϩѲᜢ߯კ
y = -20.525 + 0.088xǴR2 = 0.128Ǵp < 0.001 y = -18.021 – 2.117x + 0.502x2ǴR2 = 0.084Ǵp = 0.004
GSI
0 2 4 6 8 10 12 14 16 18 20
δ15N
5 6 7 8 9 10
HSI
1 2 3 4
δ15N
5 6 7 8 9 10
(c)ሟങط᠌ į15N ᆶ GSI ޑϩѲᜢ߯კ (d)ሟങط᠌ į15N ᆶ HSI ޑϩѲᜢ߯კ y = 7.988 – 0.065xǴR2 = 0.122Ǵp < 0.001
კΜϖǵሟങط᠌į13Cǵį15N ᆶ GSIǵHSI ϐϩѲᜢ߯კ
41
Male - Gonad
GSI
Male - Goand
HSI
Male - White muscle
GSI
Male - White muscle
HSI
Male - Liver
GSI
42
Female - Gonad
GSI
-15.5 Female - Gonad
HSI
Female - White muscle
GSI
Female - White muscle
HSI
Female - Liver
GSI
-15.5 Female - Liver
HSI
43
(a) Gonad - Liver difference GSI
0246810121416
5(b) Gonad - Liver difference HSI
0.00.51.01.52.02.53.0
5(c) White muscle - Liver difference GSI
0246810121416
6(d) White muscle - Liver difference HSI
0.00.51.01.52.02.53.0
6 (e) Gonad - Liver difference GSI
0246810121416
δ13
C' -1 -2 -3 -4
0
1
2(f) Gonad - Liver difference HSI
0.00.51.01.52.02.53.0
δ13
C' -1 -2 -3 -4
0
1
2(g) White muscle - Liver difference GSI
0246810121416
δ13
C' -2 -3 -4 -5
-10
1
2(h) White muscle - Liver difference HSI
0.00.51.01.52.02.53.0
δ13
C' -2 -3 -4 -5
-10
1
2 კΜΖǵങғဏکط᠌ޑį13 Cৡॶᆶ(a)GSIǴ(b)HSIǹ қԺکط᠌ޑį13 Cৡॶᆶ(c)GSIǴ(d)HSIǹ ғဏکط᠌ޑį13 Cƍৡॶᆶ(e)GSIǴ(f)HSIǹ қԺکط᠌ޑį13 Cƍৡॶᆶ(g)GSIǴ(h)HSIޑϩѲᜢ߯კ (ߕԖx = 0ޑୖԵጕ)
44
(a) Gonad - Liver difference
GSI
0 2 4 6 8 10 12 14 16
δ15N
-2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5
1.0 (b) Gonad - Liver difference
HSI
0.0 0.5 1.0 1.5 2.0 2.5 3.0
δ15N
-2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0
(c) White muscle - Liver difference
GSI
0 2 4 6 8 10 12 14 16
δ15N
0 1 2 3
4 (d) White muscle - Liver difference
HSI
0.0 0.5 1.0 1.5 2.0 2.5 3.0
δ15N
0 1 2 3 4
კΜΐǵങғဏکط᠌ޑį15N ৡॶᆶ(a)GSIǴ(b)HSIǹ
қԺکط᠌ޑį15N ৡॶᆶ(c)GSIǴ(d)HSI ޑϩѲᜢ߯კ (ߕԖ x = 0 ୖԵጕ)
45
(a) Goand - Liver difference GSI
02468101214161820
6(b) Goand - Liver difference HSI
0.51.01.52.02.53.03.54.0
6(c) White muscle - Liver difference GSI
02468101214161820
δ13
C 2 1 0 -1
3
4
5(d) White muscle - Liver difference HSI
0.51.01.52.02.53.03.54.0
5 (e) Gonad - Liver difference GSI
02468101214161820
2.0(f) Gonad - Liver difference GSI
0.51.01.52.02.53.03.54.0
2.0(g) White muscle - Liver difference GSI
02468101214161820
1.5(h) White muscle - Liver difference HSI
0.51.01.52.02.53.03.54.0
1.5 კΒΜǵሟങғဏکط᠌ޑį13 Cৡॶᆶ(a)GSIǴ(b)HSIǹ қԺکط᠌ޑį13 Cৡॶᆶ(c)GSIǴ(d)HSIǹ ғဏکط᠌ޑį13 Cƍৡॶᆶ(e)GSIǴ(f)HSIǹ қԺکط᠌ޑį13 Cƍৡॶᆶ(g)GSIǴ(h)HSIޑϩѲᜢ߯კ (ߕԖx = 0ޑୖԵጕ)
46
(a) Gonad - Liver difference
GSI
0 2 4 6 8 10 12 14 16 18 20
δ15N
-2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0
1.5 (b) Gonad - Liver difference
HSI
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
δ15N
-2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5
(c) White muscle - Liver difference
GSI
0 2 4 6 8 10 12 14 16 18 20
δ15N
0 1 2 3 4
(d) White muscle - Liver difference
HSI
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
δ15N
0 1 2 3 4
კΒΜǵሟങғဏکط᠌ޑį15N ৡॶᆶ(a)GSIǴ(b)HSIǹ
қԺکط᠌ޑ į15N ৡॶᆶ(c)GSIǴ(d)HSI ޑϩѲᜢ߯კ (ߕԖ x = 0 ୖԵጕ)
47 Apr2011
May2011Jul 2011
Aug2011
Sept 2011
Oct2011Nov2011Dec2011Feb2012
Zooplankton density (individuals / m3 )
0 2e+4 4e+4 6e+4 8e+4 1e+5
კΒΜΒǵᙔᆘӀភഒ᜶Ьा१ނ(ᐓىᜪ)ஏࡋਔׇשጕკ
48
-18.5 copepodd (<1mm)
copepodd (>1mm)
10 copepod (<1mm)
copepod (>1mm) chaetognatha
კΒΜΟǵᙔᆘӀភഒ᜶ЬाΟᅿ१ނྍޑį13Cǵį15N ਔׇשጕკ
49
ࢠǵ߄
߄1ǵങϷሟങगϣ֖ނӧДҽ໔ޑৡ౦(MANOVA ) (a)ങǵ(b)ሟങ
(a)
Effect Wilk’s
Lambda F Hypothesis
df Error df p
Intercept 0.027 216.119 9 53 <0.001 Month 0.017 2.541 117 409.610 <0.001
! (b)
Effect Wilk’s
Lambda F Hypothesis
df Error df p
Intercept 0.037 192.622 8 59 <0.001 Month 0.013 3.545 104 417.268 <0.001
!
50
߄2ǵങΟᅿಔᙃ C/N ratio ӧДҽ໔ޑৡ౦(ANCOVA)Ǻ!
(a)ғဏǵ(b)қԺǵ(c)ط᠌
(a)
Effect SS df MS F p
Intercept 10.785 1 10.785 148.892 <0.001
SL 0.085 1 0.085 1.171 0.281
Month 1.919 13 0.148 2.038 0.023 Error 8.475 117 0.072
! (b)
Effect SS df MS F p
Intercept 10.948 1 10.948 667.951 <0.001
SL 0.006 1 0.006 0.364 0.548
Month 0.602 13 0.046 2.818 0.001 Error 1.918 117 0.016
! (c)
Effect SS df MS F p
Intercept 24.223 1 24.223 9.299 0.003
SL 3.841 1 3.841 1.474 0.227
Month 304.445 13 23.419 8.990 <0.001 Error 304.792 117 2.605
!
51
߄3ǵሟങΟᅿಔᙃ C/N ratio ӧДҽ໔ޑৡ౦(ANCOVA)Ǻ (a)ғဏǵ(b)қԺǵ(c)ط᠌
(a)
Effect SS df MS F p
Intercept 18.637 1 18.637 263.314 <0.001
SL 0.296 1 0.296 4.187 0.043
Month 22.514 13 1.732 24.469 <0.001 Error 8.069 114 0.071
! (b)
Effect SS df MS F p
Intercept 8.789 1 8.789 297.211 <0.001
SL 0.042 1 0.042 1.422 0.235
Month 0.482 13 0.037 1.253 0.252 Error 3.371 114 0.030
! (c)
Effect SS df MS F p
Intercept 53.668 1 53.668 59.606 <0.001
SL 7.575 1 7.575 8.413 0.004
Month 205.843 13 15.834 17.586 <0.001 Error 102.644 114 0.900
!
!
52
߄4ǵങΟᅿಔᙃޑ į13Cǵį15N ॶӧДҽ໔ޑৡ౦(ANCOVAǴаྗᡏߏࣁ Ӆᡂኧ)
(a)ങғဏ į13C
Effect SS df MS F p
Intercept 400.838 1 400.838 3727.291 <0.001
SL 0.895 1 0.895 8.327 0.005
Month 25.360 13 1.951 18.140 <0.001 Error 12.582 117 0.108
(b)ങғဏ į15N
Effect SS df MS F p
Intercept 25.559 1 25.559 153.275 <0.001 SL 7.287 1 7.287 43.698 <0.001 Month 68.525 13 5.271 31.611 <0.001 Error 19.510 117 0.167
(c)ങқԺ į13C
Effect SS df MS F p
Intercept 392.044 1 392.044 6346.681 <0.001 SL 1.749 1 1.749 28.318 <0.001 Month 5.444 13 0.419 6.780 <0.001 Error 7.227 117 0.062
(d)ങқԺ į15N
Effect SS df MS F p
Intercept 58.251 1 58.251 911.538 <0.001 SL 5.476 1 5.476 85.693 <0.001 Month 3.616 13 0.278 4.353 <0.001 Error 7.477 117 0.064
(e)ങط᠌ į13C
Effect SS df MS F p
Intercept 567.583 1 567.583 780.685 <0.001 SL 10.246 1 10.246 14.093 <0.001 Month 138.754 13 10.673 14.681 <0.001 Error 85.062 117 0.727
(f)ങط᠌ į15N
Effect SS df MS F p
Intercept 39.652 1 39.651 315.717 <0.001 SL 4.569 1 4.569 36.379 <0.001 Month 42.890 13 3.299 26.271 <0.001 Error 14.694 117 0.126
53
߄5ǵሟങΟᅿಔᙃޑ į13Cǵį15N ॶӧДҽ໔ޑৡ౦(ANCOVAǴаྗᡏߏࣁ Ӆᡂኧ)
!
(a)ሟങғဏ į13C!
Effect SS df MS F p
Intercept 303.649 1 303.649 2227.883 <0.001
SL 1.000 1 1.000 7.340 0.008
Month 63.752 13 4.904 35.981 <0.001 Error 15.538 114 0.136
!
(b)ሟങғဏ į15N!
Effect SS df MS F p
Intercept 35.675 1 35.675 649.888 <0.001
SL 0.439 1 0.439 7.993 0.006
Month 51.625 13 3.971 72.342 <0.001 Error 6.258 114 0.055
!
(c)ሟങқԺ į13C!
Effect SS df MS F p
Intercept 265.251 1 265.251 2795.781 <0.001 SL 1.490 1 1.490 15.701 <0.001 Month 5.085 13 0.391 4.123 <0.001 Error 10.816 114 0.095
!
(d)ሟങқԺ į15N!
Effect SS df MS F p
Intercept 51.882 1 51.882 1176.055 <0.001 SL 0.582 1 0.582 13.188 <0.001 Month 4.088 13 0.314 7.128 <0.001 Error 5.029 114 0.044
!
(e)ሟങط᠌ į13C!
Effect SS df MS F p
Intercept 358.413 1 358.413 1460.397 <0.001 SL 4.924 1 4.924 20.062 <0.001 Month 62.702 13 4.823 19.653 <0.001 Error 27.978 114 0.245
!
(f)ሟങط᠌ į15N!
Effect SS df MS F p
Intercept 31.263 1 31.263 273.033 <0.001
SL 0.610 1 0.61 5.326 0.023
Month 37.569 13 2.890 25.239 <0.001 Error 13.053 114 0.115
!
54
ߕᒵ!
ߕᒵ1ǵങӚДҽኬҁኧໆǵᔸख़ǵᡏߏǵط᠌ǵ܄ဏǵિެख़ໆаϷΟᡏ
ࡰኧ(GSIǵHSIǵMFI)ѳ֡ॶ(±SD)
Month Number of specimen Wet 2011.02 30 19.56²
4.99 2011.03 21 19.29²
6.62 2011.04 19 21.10²
5.17 2011.05 27 17.65²
7.61 2011.06 18 13.00²
6.09 2011.07 20 16.55²
4.37 2011.08 30 13.13²
4.62 2011.09 26 19.89²
2.96 2011.10 17 18.11²
5.28 2011.11 22 16.76²
5.30 2011.12 28 15.84²
3.39 2012.01 19 17.02²
5.16 2012.02 23 18.03²
4.01
55
ߕᒵ2ǵሟങӚДҽኬҁኧໆǵᡏख़ǵᡏߏǵط᠌ǵ܄ဏǵિެख़ໆаϷΟᡏ
ࡰኧ(GSIǵHSIǵMFI)ѳ֡ॶ(±SD)
Month Number of specimen Wet
2011.01 11 11.33² 6.85 2011.02 18 15.96²
5.24 2011.03 18 17.14²
5.84 2011.04 11 15.68²
3.61 2011.05 16 15.72²
5.32 2011.06 17 11.35²
4.02 2011.09 16 12.61²
2.87 2011.10 18 15.69²
4.93 2011.11 14 15.11²
4.63 2011.12 15 15.77²
3.31 2012.01 17 13.52²
2.74 2012.02 20 16.30²
2.87
56
ߕᒵ3ǵ܄ձόܴޑኬҁϐᔸख़ǵᡏߏǵط᠌ǵ܄ဏǵિެख़ໆаϷΟᡏࡰኧ (GSIǵHSIǵMFI)ॶ*!
Month Area Wet body weight (g)
Body length (cm,FL)
Liver weight (g)
Gonad weight (g)
Fat weight (g)
GSI HSI MFI
2011.01 A 5.350 5.300 0.060 0.030 0.010 0.561 1.121 0.187 2011.03 A NA 6.700 0.250 0.360 0.010 NA NA NA 2011.03 A 4.850 5.230 0.070 0.020 0.000 0.412 1.443 0.000 2011.05 A 3.310 4.550 0.04 0.020 0.000 0.6042 1.208 0.000 2011.07 A 3.243 4.650 0.058 0.000 0.000 0.000 1.788 0.000 2011.07 A 2.576 3.955 0.040 0.009 0.000 0.349 1.553 0.000 2011.07 A 2.964 4.400 0.044 0.000 0.000 0.000 1.484 0.000 2011.07 A 2.543 4.080 0.044 0.006 0.000 0.236 1.730 0.000 2011.07 A 2.626 4.170 0.014 0.000 0.000 0.000 0.533 0.000 2011.08 A 4.563 5.000 0.046 0.004 0.008 0.088 1.008 0.175 2011.08 A 2.536 4.120 0.026 NA 0.003 0.000 1.025 0.118 2011.08 B NA 8.380 0.323 0.993 0.000 NA NA NA 2011.10 A 4.891 5.270 0.054 NA 0.003 NA NA 0.061 2011.11 A 5.980 5.480 0.093 0.050 0.035 0.836 1.555 0.585 2011.11 A 4.971 4.950 0.048 0.023 0.043 0.463 0.966 0.865 2011.12 A 12.319 7.020 0.452 NA 0.055 NA 3.669 0.446 2012.01 B 9.081 6.110 0.120 0.043 0.008 0.474 1.321 0.088 2012.01 B 14.409 7.830 0.244 NA 0.147 NA 1.693 1.020
*NAǺdata are not available!
57 ߕᒵ4ǵങगϣ֖ނӚ१ނಔԋԭϩК!
Month Area copepod chaetognatha egg algae fish shrimp polychaeta isopod scale 2011.01 A 80.46 19.54 0.00 0.00 0.00 0.00 0.00 0.00 0.00
58
ុ।
2011.11 A 85.00 13.33 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.11 B 70.00 15.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.12 B 44.44 11.11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.12 B 74.07 18.52 0.00 1.23 0.00 0.00 0.00 0.00 0.00 2011.12 B 54.29 22.86 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.12 B 64.86 5.41 2.70 0.00 0.00 0.00 0.00 0.00 0.00 2011.12 B 57.89 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2012.01 A 81.03 15.52 0.00 0.00 0.00 0.43 0.00 0.00 0.00 2012.01 A 43.43 48.00 0.00 0.00 0.00 0.57 0.00 0.00 0.00 2012.01 A 57.62 35.76 0.00 0.00 0.00 0.66 0.00 0.00 0.00 2012.01 A 76.92 21.74 0.00 0.00 0.00 0.33 0.33 0.00 0.67 2012.01 B 72.61 12.45 0.00 2.07 0.00 0.41 0.00 0.00 0.00 2012.02 A 66.67 8.89 11.11 0.00 0.00 0.00 0.00 0.00 0.00 2012.02 A 73.33 10.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2012.02 A 79.21 15.84 0.99 0.00 0.00 0.00 0.00 0.00 0.00 2012.02 A 61.11 30.56 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2012.02 A 95.24 0.00 0.00 4.76 0.00 0.00 0.00 0.00 0.00 Mean 73.17 9.47 0.19 0.14 0.24 0.31 0.03 0.01 0.01
STD 22.29 11.85 1.29 0.61 0.84 0.95 0.14 0.07 0.08
!
! !
59 ߕᒵ5ǵሟങगϣ֖ނӚ१ނಔԋԭϩК!
Month Area copepod chaetognatha egg algae fish shrimp polychaeta isopod scale 2011.01 A 82.43 14.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00
60
ុ।
2011.10 B 100.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.10 B 100.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.11 A 90.00 10.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.11 A 84.21 15.79 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.11 A 75.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.11 A 93.81 0.00 0.00 6.19 0.00 0.00 0.00 0.00 0.00 2011.11 B 30.19 1.89 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.12 A 93.75 5.21 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.12 B 37.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.12 B 100.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.12 B 34.57 6.17 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2011.12 B 92.31 7.69 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2012.01 A 36.36 9.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2012.01 A 44.44 3.70 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2012.01 A 66.67 6.80 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2012.01 B 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2012.01 B 30.77 7.69 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2012.02 A 58.28 12.27 0.00 0.00 4.29 3.68 0.00 0.00 0.00 2012.02 A 53.03 4.55 0.00 0.00 0.00 4.55 0.00 0.00 0.00 2012.02 A 58.42 13.86 0.00 0.00 0.00 2.97 0.00 0.00 0.00 2012.02 A 60.54 6.12 0.00 0.00 4.76 4.76 0.00 0.00 0.00 2012.02 A 65.35 1.98 0.00 0.00 13.86 1.98 0.00 0.00 0.00
Mean 70.48 8.12 0.09 0.25 0.47 0.44 0.10 0.00 0.00 STD 20.99 9.69 0.39 0.96 2.07 1.17 0.43 0.00 0.00
!
61
ߕᒵ6ǵങӚДҽᛙۓӕՏનѳ֡ॶϷྗৡ!
Month Gonad
į13C(‰) Gonad
į15N(‰) Liver
į13C(‰) Liver į15N(‰)
White muscle į13C(‰)
White muscle į15N(‰) 2011.01 -18.7±0.2 7.7²0.2 -20.4²0.5 8.4²0.2 -18.3²0.6 9.6²0.5 2011.02 -19.0²0.4 7.8²0.5 -20.9²0.8 8.2²0.5 -18.0²0.2 9.8²0.3 2011.03 -19.3²0.3 8.2²0.6 -20.6²0.5 9.0²0.4 -18.3²0.2 9.7²0.4 2011.04 -18.9²0.2 8.5²0.6 -20.0²0.8 9.2²0.4 -18.3²0.4 9.9²0.4 2011.05 -18.6²0.1 8.2²0.5 -18.9²0.7 8.6²0.4 -18.1²0.2 9.8²0.2 2011.06 -18.8²0.5 8.5²0.8 -19.2²0.1 8.8²0.4 -17.9²0.2 10.0²0.3 2011.07 -18.5²0.4 7.4²0.4 -20.5²1.1 8.1²0.5 -17.9²0.2 9.9²0.3 2011.08 -17.9²0.1 7.1²0.3 -19.6²0.7 8.2²0.4 -18.0²0.3 9.8²0.3 2011.09 -18.2²0.3 5.6²0.4 -19.6²1.3 7.0²0.3 -17.8²0.2 9.5²0.3 2011.10 -17.8²0.4 7.4²0.4 -19.2²2.0 8.1²0.4 -17.8²0.2 9.4²0.4 2011.11 -18.4²0.3 7.7²0.4 -18.7²0.2 8.0²0.6 -17.8²0.2 9.4²0.5 2011.12 -18.5²0.2 7.4²0.3 -20.4²0.6 8.3²0.2 -17.8²0.2 9.6²0.3 2012.01 -18.8²0.6 6.8²0.4 -21.8²0.8 7.5²0.4 -18.3²0.5 9.8²0.4 2012.02 -19.2²0.2 7.4²0.6 -22.1²0.7 7.9²0.4 -18.0²0.3 9.9²0.2
!
! !
62
ߕᒵ7ǵሟങӚДҽᛙۓӕՏનѳ֡ॶϷྗৡ!
Month Gonad
į13C(‰) Gonad
į15N(‰) Liver
į13C(‰) Liver į15N(‰)
White muscle į13C(‰)
White muscle į15N(‰) 2011.01 -19.6²0.5 7.8²0.3 -20.7²0.6 7.9²0.3 -18.0²0.2 9.3²0.2 2011.02 -20.5²0.1 8.3²0.1 -20.4²0.5 7.6²0.3 -18.2²0.3 9.6²0.3 2011.03 -20.8²0.1 8.5²0.2 -20.5²0.3 8.1²0.3 -18.1²0.5 9.6²0.2 2011.04 -20.5²0.2 8.8²0.3 -19.8²0.4 8.3²0.2 -18.5²0.4 9.5²0.3 2011.05 -19.7²0.2 8.6²0.2 -19.4²0.3 8.1²0.3 -18.0²0.1 9.6²0.2 2011.06 -18.8²0.7 8.2²0.4 -19.5²0.6 8.5²0.5 -18.1²0.3 9.8²0.2 2011.07 -19.5²0.5 7.7²0.2 -20.6²0.4 7.5²0.3 -18.1²0.2 9.7²0.2 2011.08 -19.3²0.3 7.7²0.5 -19.6²0.7 7.4²0.3 -18.3²0.6 9.6²0.1 2011.09 -19.7²0.1 6.0²0.2 -20.2²0.5 6.1²0.3 -17.9²0.3 9.2²0.1 2011.10 -19.0²0.1 8.3²0.2 -19.2²0.6 7.4²0.2 -17.8²0.2 9.3²0.1 2011.11 -19.1²0.4 7.9²0.3 -18.7²0.2 7.3²0.2 -17.6²0.0 9.4²0.2 2011.12 -20.1²0.2 8.4²0.2 -19.6²0.5 7.6²0.2 -17.9²0.3 9.4²0.2 2012.01 -18.3²0.7 7.3²0.2 -21.5²1.0 7.5²0.7 -18.0²0.2 9.7²0.3 2012.02 -20.3²0.4 7.8²0.2 -20.6²0.5 7.7²0.3 -18.1²0.5 9.8²0.3
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