From 968b246234c0e7e017af66d86e67dbdaddb7e5b0 Mon Sep 17 00:00:00 2001 From: ggserver Date: Fri, 19 Jul 2024 12:42:36 +0000 Subject: [PATCH] Add updates up until 2024-07-19 12:36:32 --- .../10/7F241037BD15FFBFFCABFD1B28F5FEE7.xml | 427 ++++++++++++++ .../10/7F241037BD16FFB1FF22FF7B29DBFD84.xml | 398 ++++++++++++++ .../10/7F241037BD19FFBAFCABFC1B280AFE87.xml | 519 ++++++++++++++++++ .../10/7F241037BD1BFFBDFCABFEBB2854FC84.xml | 413 ++++++++++++++ .../10/7F241037BD1EFFB9FC80FADB2D62FEE7.xml | 124 +++++ .../10/7F241037BD1EFFBAFC80FE1B2848FB47.xml | 167 ++++++ 6 files changed, 2048 insertions(+) create mode 100644 data/7F/24/10/7F241037BD15FFBFFCABFD1B28F5FEE7.xml create mode 100644 data/7F/24/10/7F241037BD16FFB1FF22FF7B29DBFD84.xml create mode 100644 data/7F/24/10/7F241037BD19FFBAFCABFC1B280AFE87.xml create mode 100644 data/7F/24/10/7F241037BD1BFFBDFCABFEBB2854FC84.xml create mode 100644 data/7F/24/10/7F241037BD1EFFB9FC80FADB2D62FEE7.xml create mode 100644 data/7F/24/10/7F241037BD1EFFBAFC80FE1B2848FB47.xml diff --git a/data/7F/24/10/7F241037BD15FFBFFCABFD1B28F5FEE7.xml b/data/7F/24/10/7F241037BD15FFBFFCABFD1B28F5FEE7.xml new file mode 100644 index 00000000000..c2477e7001d --- /dev/null +++ b/data/7F/24/10/7F241037BD15FFBFFCABFD1B28F5FEE7.xml @@ -0,0 +1,427 @@ + + + +Spatio-temporal distribution of pufferfish (Tetraodontidae) along the Turkish coast of the Mediterranean Sea Abstract + + + +Author + +Mutlu, Erhan +Akdeniz University, Fisheries Faculty, Main Campus, Antalya, Turkey + + + +Author + +Meo, Ilaria de +Inland Norway University of Applied Sciences, Faculty of Applied Ecology, Agricultural Sciences and Biotechnology, Campus Evenstad, Elverum, Norway + + + +Author + +Miglietta, Claudia +Alimatha Island, Vaavu Atoll, Maldives + +text + + +Mediterranean Marine Science + + +2020 + +2021-01-08 + + +22 + + +1 + + +1 +19 + + + + +http://dx.doi.org/10.12681/mms.23481 + +journal article +10.12681/mms.23481 +1108-393X +12551720 + + + + + + +Lagocephalus guentheri + + + + + + +The species + +L. guentheri + +was found between 10 and +75 m +seafloor depth. The maximum biomass was +25 kg +/ km +2 +and maximum abundance was 690 ind/km +2 +( +Fig. 4 +). With the exception of +R +2 which only had one occurrence, the species was frequently found in the other regions and seemed to decrease from west to east across the study area. + + +Regional differences were observed for the biomass of + +L. guentheri + +( +ANOVA +, +p += 0.002). The mean biomass was significantly higher in +R +4 (7.94 ± +1.79 kg +/km +2 +), seaward of the river mouths. +R +2 had the least biomass ( +0.02 ± 0.83 kg +/km +2 +), and the other regions varied between +0.73 ± 0.80 kg +/km + +2 +in + +R +3 and 1.61 ± +0.78 kg +/km + +2 +in + +R +1. The biomass did not differ significantly with season ( +p += 0.27); however, the biomass increased from May ( +0.17 ± 0.92 kg +/km +2 +) through August–to-October (0.68 ± 1.04 to 1.59 ± +0.94 kg +/km +2 +) to February (2.72 ± +0.99 kg +/km +2 +). The species was found at depths of bottom of +10–25 m +and +75 m +during the year ( +Fig. 4 +) and showed no significant differences in biomass as a function of bottom depth ( +p += 0.135). The biomass decreased with bottom depth and was only significantly higher at +10 m +(4.28 ± +1.09 kg +/km +2 +) than at +75 m +( +0.76 ± 1.13 kg +/km +2 +). + + + +Fig. 3: +Length-weight relationships of males (blue), females (pink), and pooled data (red) of +Lagocephalus sceleratus +. + + + + +Fig. 4: +Distribution of (A) biomass, (B) abundance (circles square-rooted), and (C) percent sex composition of + +Lagocephalus guentheri + +in time (months) and space (regions and depths). Seasonal colors on figures are: blue = May 2014, green = August 2014, red = October 2014, and magenta = February 2015. Colors for sex ratio: females follow seasonal color scheme, males are black, and juveniles are white in seasons. + + + +Unlike biomass, abundances were not statistically different among regions ( +ANOVA +, +p += 0.221). The minimum abundance was 0.91 ± 20.66 ind/km + +2 +in + +R +2 and the maximum abundance 101.80 ± 44.32 ind/km + +2 +in + +R +4. Region +R +3 had an abundance of 23.32 ± 19.82 ind/km +2 +and +R +1 had 32.23 ± 19.44 ind/km +2 +. There was no significant difference in the abundance among seasons ( +p += 0.404). Minimum abundance was estimated in May at 0.86 ± 21.34 ind/km +2 +, while maximum abundance occurred in February (54.05 ± 22.96 ind/km +2 +). Abundance was 28.71 ± 24.27 ind/km + +2 +in + +August and 19.86 ± 21.84 ind/km + +2 +in + +October. Differences in abundance as a function of bottom depth was not statistically significant ( +p += 0.250); however, abundance in shallow waters was significantly higher (80.87 ± 25.46 ind/km +2 +) than in deep waters (0.93 ± 26.36 ind/km +2 +), and the abundance at +25 m +was 55.77 ± 27.35 ind/km +2 +. + + + +Sex ratios did not change significantly among regions, seasons, and bottom depths ( +p += +0.875 +, +0.865 +, and 0.188, respectively). Regions 1 and 4 had higher ratios (0.66 ± 0.39 each) than +R3 +(0.34 ± 0.54). The ratios increased linearly from August (0.18 ± 0.80) to May (1.00 ± 0.80) with a difference of 0.25 between seasons. With respect to bottom depth, the ratios varied between 1.00 ± 0.29 at + +10 m + + +and 0.28 ± 0.29 at + +25 m +. + + + +The total length of + +L. guentheri + +varied between 7 and +25.2 cm +during the year. The +COST +function estimated an optimum size class interval of +0.43 cm +. Five cohorts were fixed using the KDF to estimate the density of each cohort corresponding to minimum densities, ranging from <8.5, 8.5–14, 14–17, 17–19, and> +19 cm +. Cohort 2 dominated the population, followed by cohort 3. The lengths were significantly different among regions, seasons, bottom depths, and sex ( +p += 1.0 × 10 +-8 +, 6.8 × 10 +-6 +, 0.0006, and 0.0031, respectively). The minimum length (12.69 ± +0.33 cm +) was found in +R +2 and the maximum length (15.88 ± +0.59 cm +) was found in +R +4. The length was not significantly different between +R +1 (9.26 ± +0.86 cm +) and +R +3 (11.92 ± +0.49 cm +). The lengths were significantly longer (24.10 ± +2.73 cm +) in May than in other seasons and were not significantly different between October (13.72 ± +0.52 cm +) and February (12.78 ± +0.34 cm +) whereas the minimum lengths were significantly different in August (11.00 ± +0.58 cm +). The length decreased from bottom depths of +10–25 m +(13–12± +0.43 cm +) to +50 m +(8.98 ± +1.01 cm +), and the longest individuals were observed at bottom depths of +75 m +(15.30 ± +2.84 cm +). Length (10.81 ± +0.68 cm +) was significantly different by sex. Post-hoc tests showed no significant differences between the total length of females (13.55 ± +0.42 cm +) and males (12.79 ± +0.42 cm +). + + +Individual weight differed significantly among regions, seasons, and sex including pooled sexes ( +p += 2.9 × 10 +-6 +, 5.0 × 10 +-8 +, and 0.0203, respectively). Individuals were significantly heavier in +R +4 (83.37 ± +8.19 g +) than in the other regions, ranging from 21.97 ± +11.90 g +in +R +2 to 37.91 ± +4.53 g +in +R +1; the latter two did not differ significantly from each other. Similar to length, weight was highest (220.91 ± +34.42 g +) in May and lowest (21.19 ± +7.34 g +) in August. October and February did not differ significantly in weight (60.06 ± +6.50 g +and 38.98 ± +4.24 g +, respectively), and weight was not significantly different between bottom depths of +50 m +(21.89 ± +14.01 g +) and +75 m +(65.84 ± +39.62 g +). Shallow waters had fish of moderate weight (~ +40 g +/ind.). The difference in weight did not differ significantly between males (40.42 ± +5.58 g +) and females (52.22 ± +5.64 g +). + + +The length-weight relationship was significantly different for females, males, and pooled individuals ( +Fig. 5 +). The slopes of the regression lines were significantly different from the isometric growth value of 3 ( +n += 112, +t += -2.455) for all individuals but not for the males and females ( +n += 49, +t += -1.474 and +n += 48, +t += -1.991) at +p +<0.05, resulting in negative allometric growth for the individuals. Overall, there was a significant difference in length-weight regression constants among regions, bottom depths, and sex owing to the contribution from individuals of undefined sex ( +p += +0.041 +, +0.044 +, and 0.038, respectively). + + +Estimates of slopes and +intercepts +among regions were statistically similar between +R1 +(2.724 and 0.0355, respectively) and +R2 +(3.065 and 0.0471, respectively), and between +R3 +(3.085 and 0.0125, respectively) and +R4 +(2.916 and 0.0218, respectively). The slope was significantly higher in +R3 +than in +R2 +whereas the +intercept +was significantly lower in +R3 +than +R2 +. There were no significant differences in L-W regressions among seasons. Only the +intercepts +differed significantly between bottom depths of + +25 m + +(0.0124) and + +50 m + +(0.0420), and one individual was found in regions with bottom depths of + + +75 m + +. + +The L-W relationships were not significantly different between females and males ( +Fig. 5 +). + + + + \ No newline at end of file diff --git a/data/7F/24/10/7F241037BD16FFB1FF22FF7B29DBFD84.xml b/data/7F/24/10/7F241037BD16FFB1FF22FF7B29DBFD84.xml new file mode 100644 index 00000000000..f82fa185c57 --- /dev/null +++ b/data/7F/24/10/7F241037BD16FFB1FF22FF7B29DBFD84.xml @@ -0,0 +1,398 @@ + + + +Spatio-temporal distribution of pufferfish (Tetraodontidae) along the Turkish coast of the Mediterranean Sea Abstract + + + +Author + +Mutlu, Erhan +Akdeniz University, Fisheries Faculty, Main Campus, Antalya, Turkey + + + +Author + +Meo, Ilaria de +Inland Norway University of Applied Sciences, Faculty of Applied Ecology, Agricultural Sciences and Biotechnology, Campus Evenstad, Elverum, Norway + + + +Author + +Miglietta, Claudia +Alimatha Island, Vaavu Atoll, Maldives + +text + + +Mediterranean Marine Science + + +2020 + +2021-01-08 + + +22 + + +1 + + +1 +19 + + + + +http://dx.doi.org/10.12681/mms.23481 + +journal article +10.12681/mms.23481 +1108-393X +12551720 + + + + + + +Lagocephalus sceleratus + + + + + + + +Lagocephalus sceleratus + +was found at seafloor depths of 10, 25, and +75 m +in all regions. The highest biomass was +135 kg +/km + +2 +in + +February and the highest abundance was 150 ind/km + +2 +in + +October and February, particularly obvious in +R +1 ( +Fig. 2 +). Populations were dominated by males May–October, while females were abundant mainly in February. + + +Biomass did not differ significantly among regions, seasons, and bottom depths ( +ANOVA +, +p += +0.675 +, +0.373 +, and 0.780, respectively).The highest biomass was highest in +R1 +( +X +± +SD +: 5.43 ± +3.10 kg +/km +2 +) and lowest in +R3 +( +0.03 ± 3.16 kg +/km +2 +, +Fig. 2 +). Biomass increased from a minimum in May ( +0.13 ± 3.34 kg +/km +2 +) and August ( +0.46 ± 3.79 kg +/km +2 +) to a maximum in October ( +1.74 ± 3.41 kg +/km +2 +) and February (7.97 ± +3.59 kg +/km +2 +). Biomass increased with depth: +0.97 ± 4.12 kg +/km +2 +at + +10 m + +, +3.69 ± 4.43 kg +/ km2 at + +25 m + +and 9.72 ± +4.27 kg +/km +2 +at + +75 m + +( +Fig. 2A +). + + +Abundance of + +L. sceleratus + +did not differ significantly among regions, seasons (months), and depths ( +p += +0.252 +, +0.215 +, and 0.269, respectively). Maximum abundance was found in +R1 +(17.35 ± 5.28 ind/km +2 +) and +R4 +(13.20 ± 12.04 ind/km +2 +) and minimum abundance in +R2 +(3.43 ± 5.61 ind/km +2 +) and +R3 +(4.92 ± 5.38 ind/km +2 +). Abundance increased gradually from May (1.77 ± 5.73 ind/km +2 +) through August (3.88 ± 6.51 ind/km +2 +), and experienced abrupt spikes in October (13.90 ± 5.86 ind/km +2 +) and February (16.95 ± 6.16 ind/km +2 +). In contrast to biomass, abundance decreased with depth from 20.40 ± 6.91 ind/ km +2 +at + +10–25 m + +to 11.36 ± 7.16 ind/km +2 +at + +75 m + +( +Fig. 2B +). + + +Sex ratios did not differ significantly among regions, seasons, and depths ( +p += +0.338 +, +0.718 +, and 0.909, respectively); however, an increase in +p +values from west (0.09 ± 0.22) to east (1.00 ± 0.44) was observed suggesting strength of dominance of the females. Females were mostly absent in May and August, whereas the ratio of females:males was twice as high in October (0.50 ± 0.25) than in February. The ratio had the same value at 10 and +25 m +(0.34 ± 0.29 – 0.33 ± 0.29) and the lowest value at +75 m +(0.16 ± 0.36, +Fig. 2C +). + + +The total length of + +L. sceleratus + +varied between 5.4 and +62.5 cm +. The +COST +function estimated an optimum length class interval (i.e., bin size) of +14.28 cm +. More than half of the total number of fish were longer than +15 cm +. The KDF assessed three cohorts from the total length frequency histograms. The number of cohorts was fixed at four size classes (<20, 20–33, 33–50, and> +50 cm +); one class had no length measurements because the bin size increased to 30 classes. The length differed significantly among seasons, depths, and sexes but not regions ( +p += 0.019, 0.0001, 0.0002, and 0.103, respectively); however, post-hoc tests showed that mean lengths were significantly smaller (7.03 ± +5.80 cm +) in +R +3 than in the other regions ( +20 cm +in +R +1, +29 cm +in +R +2, and +25 cm +in +R +4) which were not significantly different from each other. The length in February was significantly longer (25.12 ± +2.83 cm +) than that in October (10.63 ± +3.39 cm +). The lengths in the pairs between other seasons were not significant between seasons (TL; 15 and +18 cm +). The total length was significantly longer (33.03 ± +3.51 cm +) at +75 m +bottom depth than similar lengths (13.24 ± +3.25 cm +) at the other two depths (10 and +25 m +). Lengths of female individuals were significantly longer (36.16 ± +4.23 cm +) than that of males (18.27 ± +2.49 cm +). + + + +Fig. 2: +Distribution of (A) biomass, (B) abundance (circles square-rooted), and (C) percent sex ratio of + +Lagocephalus sceleratus + +in time (months) and space (regions and depths). Seasonal colors on the figures are: blue for May 2014, green for August 2014, red for October 2014, and magenta for February 2015. Colors for sex ratio: females follow seasonal color scheme, males are black, and juveniles are white in seasons. + + + +Individual weights of the fish ranged from +2.04 to 3700 g +during the year. There were significant differences in weights among bottom depths and sex ( +p += 0.004 and 0.001, respectively). There were no significant differences in individual weights by region. The weights varied between a minima ( +5.26 ± 299.02 g +) in +R +3 and a maxima (440.81 ± +366.22 g +) in +R +2. The increase in individual weights did not increase significantly from 65.51 ± +50.59 g +in May to +88-94 g +in August–October to 481.05 ± +149.20 g +in February. However, the weights were significantly heavier (855.64 ± +185.22 g +) at depth ( +75 m +) than the weights ( +39–143 g +) at coastal depths ( +10–25 m +). Individual mean weights of females were significantly higher (1168.5 ± +213.15 g +) than that of males (149.44 ± +125.71 g +). + + +Length-weight (L-W) relationship was estimated for males, females, and pooled data ( +Fig. 3 +). Fish showed isometric growth ( +b += 2.89) because the slopes were not significantly different from the constant ( +b += 3) for males, females, and remaining individuals ( +n += 44, student +t += -0.075; +n += 30, +t += -0.279, and +n += 8, +t += -0.160, respectively). The length-weight relationship was not significantly different between sexes ( +ANCOVA +, +p += 0.307). There was no significant difference in the length-weight regressions among regions (mean log +10 +-transformed +intercept +, +a += -1.66 ± 0.15 ( +X +± +SE +) and slope, +b += 2.79 ± 0.13). Slope and +intercepts +of the regression changed significantly with seasons and bottom depths ( +p += 0.005 and 0.019, respectively). The slopes were 3.447, 2.847, 2.791, and +3.032 in +R1 +, +R2 +, +R3 +, and +R4 +, respectively, whereas the +intercepts +were 0.0031, 0.0163, 0.022, and 0.0111, respectively. The slopes were 2.827 at + +10 m + +bottom depth, 2.787 at + +25 m + +, and 3.004 at + +75 m +depth + +and the +intercepts +were +0.0189 +, +0.0226 +, and 0.0125, respectively. + + + + \ No newline at end of file diff --git a/data/7F/24/10/7F241037BD19FFBAFCABFC1B280AFE87.xml b/data/7F/24/10/7F241037BD19FFBAFCABFC1B280AFE87.xml new file mode 100644 index 00000000000..6e4d12fe8f4 --- /dev/null +++ b/data/7F/24/10/7F241037BD19FFBAFCABFC1B280AFE87.xml @@ -0,0 +1,519 @@ + + + +Spatio-temporal distribution of pufferfish (Tetraodontidae) along the Turkish coast of the Mediterranean Sea Abstract + + + +Author + +Mutlu, Erhan +Akdeniz University, Fisheries Faculty, Main Campus, Antalya, Turkey + + + +Author + +Meo, Ilaria de +Inland Norway University of Applied Sciences, Faculty of Applied Ecology, Agricultural Sciences and Biotechnology, Campus Evenstad, Elverum, Norway + + + +Author + +Miglietta, Claudia +Alimatha Island, Vaavu Atoll, Maldives + +text + + +Mediterranean Marine Science + + +2020 + +2021-01-08 + + +22 + + +1 + + +1 +19 + + + + +http://dx.doi.org/10.12681/mms.23481 + +journal article +10.12681/mms.23481 +1108-393X +12551720 + + + + + + +Torquigener flavimaculosus + + + + + + +The species + +T. flavimaculosus + +was found mostly in the eastern part of the study area. The species was not found in +R4 +located in front of the river. This species was distributed on the shelf without exceeding bottom depths of + +75 m + +, the maximum biomass was +2 kg +/km +2 +, and the abundance was 150 ind/km + +2 +in + +the other regions ( +Fig. 11 +). The biomass of the species was not significantly different among regions, seasons, and bottom depths ( +p += +0.190 +, +0.306 +, and 0.077, respectively); however, the mean biomass was significantly higher in +R3 +(0.20 ± +0.06 kg +/km +2 +) than in +R1 +( +0.03 ± 0.06 kg +/km +2 +). +The +seasonal biomass varied between +0.037 ± 0.08 kg +/km + + +2 +in + +August + +and 0.20 ± +0.07 kg +/km + + +2 +in + +May. The + +biomass decreased slightly with bottom depths of + +50 m + +, and then was higher at + +75 m + +(0.35 ± +0.08 kg +/km +2 +) only than that at + +25 m + +(0.10 ± +0.08 kg +/km +2 +, +Fig. 11A +). + + + + +Fig. 8: +Lagocephalus suezensis + +: (A) length-frequency histogram with solution of the KDF in a size class interval estimated by (B) COST function. Asterisk * = optimum length class interval in cm. + + + + +Fig. 9: +Post-hoc test (least significant difference, LSD) in total length in cm of + +Lagocephalus suezensis + +among (A) regions, (B) seasons (1 = May, 2 = August, 3 = October, and 4 = February), (C) bottom depths, and (D) sex (F = female, M = male, NI = sex not identified, and J = juvenile). Circle = mean, horizontal bar = standard deviation, blue mark = to be tested among the regions, months, and depths, red = significantly different, gray = not significantly different between vertical discrete gray lines. + + + + +Fig. 10: +Length-weight relationships of males (blue), females (pink), and pooled data (red) of + +Lagocephalus suezensis + +. + + + +Results of +ANOVA +showed that abundance did not differ significantly among regions, seasons, and bottom depths ( +p += +0.160 +, +0.503 +, and 0.063, respectively). +Nevertheless +, the mean abundance was significantly higher in +R3 +(21.24 ± 5.65 ind/km +2 +) than in +R1 +(4.96 ± 5.54 ind/km +2 +). +The +maximum seasonal abundance was estimated to be 16.77 ± 6.14 ind/km + + +2 +in + +May + +, and the minimum abundance was 4.18 ± 6.98 ind/km + + +2 +in + +August. Similar + +to biomass distribution by bottom depth, abundance varied between 7.69 and 8.33 ind/km +2 +at + +25–50 m + +, 26.53 ind/km +2 +at + +10 m + +, and 25.14 ind/km +2 +at + +75 m + +( +Fig. 11B +). + + + +Table 2. +Estimates of coefficient estimates of length-weight regression equations for + +Lagocephalus suezensis + +among regions and t-tests representing the coefficients (slopes and log +10 +-transformed intercepts) of power-fit regression line. Bold +p +value +s +are significant and representative of slopes and intercepts in the equations. + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+Term + +Estimate + +Std. Err. + +t + +p +
Intercept-1.6860.0264-63.68 +1.6*10 +-256 +
1-0.0580.0340-1.720.0855
20.3120.06734.64 +4.2*10 +-6 +
3-0.0340.0328-1.030.3012
4-0.2200.0405-5.43 +8.0*10 +-8 +
Slope2.8140.0247113.78 +0.0000 +
10.0680.03262.09 +0.0367 +
2-0.2890.0626-4.62 +4.7*10 +-6 +
30.0210.03070.710.4789
40.1990.03745.33 +1.4*10 +-7 +
+ + + +Fig. 11: +Distribution of (A) biomass, (B) abundance (circles square-rooted), and (C) percent sex composition of +Torquigener flavimaculosus +in time (months) and space (regions and depths). Seasonal colors on the figures are: blue = May 2014, green = August 2014, red = October 2014, and magenta = February 2015. Colors for sex composition are: females follow seasonal color scheme, males = black, and juveniles = white in seasons. + + + + +Dominance of females over males was not significant among regions, seasons, and bottom depths ( +p += +0.291 +, +0.094 +, and 0.081, respectively). +The +female:male ratio varied seasonally between 3.3×10 +-16 +± 0.55 by male dominance in +R1 +and 1.16 ± 0.45 by female dominance in +R2 +. +The +ratio was significantly higher in +February +(1.81 ± 0.48) than in +May +(0.36 ± 0.37). +In +the other seasons, females were mostly absent with males present in high abundance. +Greater +bottom depths ( + +75 m + +) had higher abundances of females (1.55 ± 0.44) as compared to males + +. + + +The total length (TL) of + +T. flavimaculosus + +ranged from +3.6 to 11.1 cm +in the study area. The optimum length class interval was estimated to be +1.07 cm +for the length distribution; however, one cohort ( +3.6–11.1 cm +in TL) was estimated. The length changed significantly with bottom depth and sex ( +p += 0.037 and 4.5×10 +-5 +, respectively). Regional length distributions varied between 6.02 ± +0.80 cm +in +R +1 and 8.07 ± +0.62 cm +in +R +2. Seasonally, the maximum length was 7.95 ± +1.43 cm +in August and the minimum length was 6.28 ± +0.72 cm +in October. The specimens were significantly longer at bottom depths of +75 m +(8.16 ± +0.50 cm +) than at +10 m +(6.27 ± +0.43 cm +). Female individuals were significantly longer (8.94 ± +0.48 cm +) than males (7.18 ± +0.33 cm +). Specimens with lengths less than 5.0 cm could not be sexed. + + +Similar to length distribution, individual weights were significantly different with respect to bottom depth and sex ( +p += 0.010 and 0.001, respectively). There were no significant seasonal or regional differences in weight. There were light individuals in +R1 +(5.35 ± +2.82 g +) and in +October +(5.76 ± +2.51 g +) and heavy individuals in +R2 +(12.43 ± +2.18 g +) and in +May +and +August +(~ +11 g +). +There +were significantly heavier individuals at bottom depths of + +25 m +and +75 m + +(~ +13 g +) than at + +10 m + +(5.56 ± +1.44 g +). Females were significantly heavier (15.74 ± +1.83 g +) than males (8.25 ± +1.23 g +). Individuals that weighed less than +3 g +could not be sexed. + + +Length-weight relationships did not differ significantly by region, season, bottom depth, and sex ( +p += 0.050, 0.517, 0.803, and 0.342, respectively). Regression equations of L-W relationships are shown in +Figure 12 +for females, males, and total individuals pooled. The species showed significant isometric growth in length with the weights for the all individuals, males, and females ( +n += 33, +t += 0.012; +n += 22, +t += -0.347, and +n += 10, +t += 0.101, respectively) at +p +<0.05. + + + + \ No newline at end of file diff --git a/data/7F/24/10/7F241037BD1BFFBDFCABFEBB2854FC84.xml b/data/7F/24/10/7F241037BD1BFFBDFCABFEBB2854FC84.xml new file mode 100644 index 00000000000..3c4612294e6 --- /dev/null +++ b/data/7F/24/10/7F241037BD1BFFBDFCABFEBB2854FC84.xml @@ -0,0 +1,413 @@ + + + +Spatio-temporal distribution of pufferfish (Tetraodontidae) along the Turkish coast of the Mediterranean Sea Abstract + + + +Author + +Mutlu, Erhan +Akdeniz University, Fisheries Faculty, Main Campus, Antalya, Turkey + + + +Author + +Meo, Ilaria de +Inland Norway University of Applied Sciences, Faculty of Applied Ecology, Agricultural Sciences and Biotechnology, Campus Evenstad, Elverum, Norway + + + +Author + +Miglietta, Claudia +Alimatha Island, Vaavu Atoll, Maldives + +text + + +Mediterranean Marine Science + + +2020 + +2021-01-08 + + +22 + + +1 + + +1 +19 + + + + +http://dx.doi.org/10.12681/mms.23481 + +journal article +10.12681/mms.23481 +1108-393X +12551720 + + + + + + +Lagocephalus suezensis + + + + + + +The most invasive species, + +L. suezensis + +, were abundant at all shelf stations with bottom depths of 10–to- +125 m +( +Fig. 6 +). Maximum average biomass was +300 kg +/km +2 +( +Fig. 6A +), and maximum abundance was 11,024 ind/km +2 +( +Fig. 6B +). This species was abundantly present in all regions, particularly in +R +4. + + +Regional differences were determined statistically for biomass distribution ( +p += 0.012). This difference was due to much higher biomass in +R +4 (62.95 ± +16.31 kg +/km +2 +) than in the other regions (2.75–10.09 ± +7.40 kg +/km +2 +, +Fig. 7A +). The biomass was significantly different among seasons and bottom depths ( +p +=0.448 and 0.269, respectively). Seasonal biomass varied from +1.59 ± 9.34 kg +/km + +2 +in + +August to 19.57 ± +8.41 kg +/km + +2 +in + +October ( +Fig. 7B +). Biomasses were tended to decrease from shallower waters (24.32 -30.62 ± +10.04 kg +/km +2 +) to deep waters (<2.00 kg/ km +2 +) ( +Fig. 7C +). Depths greater than +125 m +were virtually devoid of + +L. suezensis + +. + + +Overall, there were no significant differences in abundance among regions, seasons, and bottom depths ( +p += +0.084 +, +0.191 +, and 0.133, respectively, +Fig. 6B +). Abundance was significantly higher (2294.60 ± 762.64 ind/ km +2 +) in +R4 +than in the other regions (from 119.26 ± 355.58 ind/km + +2 +in + +R2 +to +573.61 +± 334.44 ind/km + +2 +in + +R1 +). Maximum mean abundance occurred in October (1157.20 ± 376.87 ind/km +2 +), while minimum abundance occurred in August (56.24 ± 418.87 ind/km +2 +). Abundance decreased with bottom depth from high abundance in shallower waters (> 1000 ind/km +2 +from + +10 to 25 m + +and low abundance at greater depths (<100 ind/km +2 +from + +50–125 m + +). + + + +Fig. 5: +Length-weight relationships of males (blue), females (pink), and pooled data (red) of + +Lagocephalus guentheri + +. + + + + +Fig. 6: +Distribution of (A) biomass, (B) abundance (circles square-rooted), and (C) percent sex composition of + +Lagocephalus suezensis + +in time (months) and space (regions and depths). Seasonal colors on the figures are: blue = May 2014, green = August 2014, red = October 2014, and magenta = February 2015. Colors for sex composition: females follow seasonal color scheme, males are black, and juveniles are white in seasons. + + + + +Fig. 7: +Post-hoc test (least significant difference, LSD) of biomasses in kg/km +2 +of + +Lagocephalus suezensis + +among (A) regions, (B) seasons (1 = May, 2 = August, 3 = October, and 4 = February), and (C) bottom depths. Circle = mean, horizontal bar = standard deviation, blue mark = to be tested for biomasses among regions, months and depths, red = significant difference, gray = no significant difference between vertical discrete gray lines. + + + +Dominance of females over males did not differ among regions, seasons, and bottom depths ( +p += +0.611 +, +0.091 +, and 0.925, respectively). Regions +R1 +and +R2 +had sex ratios <2, whereas the ratios were higher in +R3 +(58.95 ± 33.85) and +R4 +(20.43 ± 61.79). The ratio was significantly higher (144.50 ± 49.03) in August than in the other seasons. Females predominated in bottom depths of + +25 m + +(53.34 ± 33.82), then decreased to 0.14 ± 56.09 at + +75 m + +; thereafter, no females were observed in the seaward direction. + + +Total length of + +L. suezensis + +varied between +4 cm +and +18.5 cm +during the year ( +Fig. 8A +). The +COST +function estimated an optimum size class (bin size) of +0.52 cm +for total length distribution of the species ( +Fig. 8B +). The KDF determined five cohorts in total length: 4.0–5.5, 5.5–10.2, 10.2–14.3, 14.3–17.0, and> +17 cm +( +Fig. 8A +). The third cohort was the dominant cohort in the population. + + +The lengths of the species were significantly different among regions, seasons, bottom depths, and sex ( +p += 1.3×10 +-14 +, 2.5×10 +-19 +, 2.0×10 +-9 +, and 2.2×10 +-27 +, respectively). The lengths were significantly shorter in +R +1 (10.21 ± +0.19 cm +) than the other regions (11.91 ± 0.18 to 12.44 ± +0.22 cm +) ( +Fig. 9A +). The shortest lengths differed significantly in October (10.59 ± +0.14 cm +) and the longest individuals were present in February (13.01 ± +0.26 cm +) ( +Fig. 9B +). The lengths were significantly longer at bottom depths of +75 m +(12.64 ± +0.44 cm +) than lengths in bottom depths of +25 m +(10.79 ± +0.15 cm +) and +50 m +(10.26 ± +1.13 cm +, +Fig. 9C +). Females were significantly longer (12.37 ± +0.15 cm +) than males (11.35 ± +0.14 cm +); however, lengths of 8.35 ± +0.40 cm +could not be sexed, and juveniles were 4.93 ± +0.96 cm +in length ( +Fig. 9D +). + + +Individual weight varied between 1.10 and +82.73 g +. The weight changed significantly with the regions, seasons, bottom depths, and sex ( +p += 2.8×10 +-11 +, 4.1×10 +-16 +, 5.6×10 +-6 +and 7.5×10 +-20 +, respectively). Individuals were significantly heavier in +R +4 (27.50 ± +1.13 g +) than in +R +1 (16.88 ± +1.01 g +) and +R +2 (23.17 ± +1.52 g +). The weight in May (25.39 ± +1.07 g +) was significantly higher than in October (18.32 ± +0.75 g +) and lower than in February (29.97 ± +1.35 g +). Individuals were significantly lighter in weight in bottom depths of +25 m +(19.59 ± +0.81 g +) than at +10 m +(25.64 ± +0.83 g +) and +75 m +(26.78 ± +2.34 g +). Females were heavier (27.40 ± +0.81 g +) than males on average (20.88 ± +0.75 g +). + + +The total length relationship with weight of + +L. suezensis + +regressed significantly for the females, males, and total individuals ( +Fig. 10 +). The slopes of the regression lines were not significantly different from the isometric slope of 3 for total and female individuals, but significantly different for males ( +n += 522, +t += -1.761; +n += 280, +t += -2.138; +n += 239, +t += -1.928, respectively) at +p +<0.05. This species grew in an isometric +type +of length-weight relationship. + + +Constants for the length-weight regression equations were significantly different by regions, bottom depths, and sex, including juveniles and individuals of undefined sex ( +p += 5.0×10 +-7 +, 0.0022, and 0.0008, respectively); there was no significant difference among the seasons. The slopes and intercepts were not significantly different between males and females at +p +<0.05. The slope was significantly lower in +R +2 than in the other regions, whereas they were not significant in +R +1 and +R +3 ( +Table 2 +). Regional differences were not estimated by post-hoc tests for length-weight relationships. Like the differences among sex (excluding undefined sex and juveniles), depth-wise differences in slopes and intercepts of length-weight relations were not significantly different; greater depths were excluded due to insufficient number of + +L. suezensis + +individuals. + + + + \ No newline at end of file diff --git a/data/7F/24/10/7F241037BD1EFFB9FC80FADB2D62FEE7.xml b/data/7F/24/10/7F241037BD1EFFB9FC80FADB2D62FEE7.xml new file mode 100644 index 00000000000..79febc29603 --- /dev/null +++ b/data/7F/24/10/7F241037BD1EFFB9FC80FADB2D62FEE7.xml @@ -0,0 +1,124 @@ + + + +Spatio-temporal distribution of pufferfish (Tetraodontidae) along the Turkish coast of the Mediterranean Sea Abstract + + + +Author + +Mutlu, Erhan +Akdeniz University, Fisheries Faculty, Main Campus, Antalya, Turkey + + + +Author + +Meo, Ilaria de +Inland Norway University of Applied Sciences, Faculty of Applied Ecology, Agricultural Sciences and Biotechnology, Campus Evenstad, Elverum, Norway + + + +Author + +Miglietta, Claudia +Alimatha Island, Vaavu Atoll, Maldives + +text + + +Mediterranean Marine Science + + +2020 + +2021-01-08 + + +22 + + +1 + + +1 +19 + + + + +http://dx.doi.org/10.12681/mms.23481 + +journal article +10.12681/mms.23481 +1108-393X +12551720 + + + + + + +Tylerius spinosissimus + + + + + + + +Tylerius spinosissimus + +was found only in +R1 +at bottom depths of + +50 m + +in +October +and + +75 m + +in +February +. In total, three individuals were caught. +The +biomass varied between +0.02 kg +/km + + +2 +in + +February + +and +0.05 kg +/km + + +2 +in + +October + +with abundance ranging from 31 ind/km +2 +and 13 ind/km +2 +, respectively. +Length +varied between 3.4 and +4.7 cm +and weight ranged between 0.84 and +2.41 g +. +It +was not possible to identify sex. + + + + \ No newline at end of file diff --git a/data/7F/24/10/7F241037BD1EFFBAFC80FE1B2848FB47.xml b/data/7F/24/10/7F241037BD1EFFBAFC80FE1B2848FB47.xml new file mode 100644 index 00000000000..ce42496ef84 --- /dev/null +++ b/data/7F/24/10/7F241037BD1EFFBAFC80FE1B2848FB47.xml @@ -0,0 +1,167 @@ + + + +Spatio-temporal distribution of pufferfish (Tetraodontidae) along the Turkish coast of the Mediterranean Sea Abstract + + + +Author + +Mutlu, Erhan +Akdeniz University, Fisheries Faculty, Main Campus, Antalya, Turkey + + + +Author + +Meo, Ilaria de +Inland Norway University of Applied Sciences, Faculty of Applied Ecology, Agricultural Sciences and Biotechnology, Campus Evenstad, Elverum, Norway + + + +Author + +Miglietta, Claudia +Alimatha Island, Vaavu Atoll, Maldives + +text + + +Mediterranean Marine Science + + +2020 + +2021-01-08 + + +22 + + +1 + + +1 +19 + + + + +http://dx.doi.org/10.12681/mms.23481 + +journal article +10.12681/mms.23481 +1108-393X +12551720 + + + + + + +Sphoeroides pachygaster + + + + + + + +One of two rare species belonging to the family +Tetraodontidae +was + +S. pachygaster +, + +found at two trawl stations. This species was caught only at bottom depths of + +200 m + +in +October +( +R2 +) and +February +( +R1 +). +The +maximum biomass was estimated to be +30 kg +/km +2 +with the maximum abundance of 120 ind/km + + +2 +in + +February + +( +R1 +), which is higher than in +October +( +16 kg +/km +2 +and 20 ind/ km +2 +, respectively). +The +number of males was 16 ind/km + + +2 +in + +February. The + +number of females varied between 20 ind/km + + +2 +in + +October + +and 36 ind/km + + +2 +in + +February. Lengths + +ranged from 12.0 to +30.4 cm +, whereas individual weights varied from +48.43 to 600 g +. +Males +were shorter than +15 cm +, with weights of +50–60 g +and females were +15–30 cm +long and weighed between 100 and +600 g +. +Statistical +significance of the measurements was not expected to test the differences among the regions, seasons, and bottom depths because the number of individuals was insufficient (only +two males +and +four females +in the catch) to establish L-W relationships, but six individuals could be useful to establish L-W significant regression lines for total specimens (W = 0.060334L +2.6995 +) of this rare species (unpublished data) + +. + + + + \ No newline at end of file