Cadmium and other heavy metal concentrations in selected biota from Cockburn Sound, Western Australia

1982 ◽  
Vol 33 (5) ◽  
pp. 779 ◽  
Author(s):  
V Talbot ◽  
A Chegwidden
Keyword(s):  
Heavy Metal ◽  
Western Australia ◽  
Carapace Width ◽  
Industrial Effluent ◽  
Correlation Coefficients ◽  
Female Crab ◽  
Portunus Pelagicus ◽  
Heavy Metal Concentrations ◽  
Chaetopterus Variopedatus ◽  
Metal Levels

Concentrations of some heavy metals in Mytilus edulis (Cd, Cr, Cu, Fe, Mn, Pb and Zn), Ostrea angasi (Cd, Cr, Cu, Pb and Zn). Portunus pelagicus (Cd, Cu, Pb and Zn), Chaetopterus variopedatus (Cd, Cu and Zn), Posidonia spp. and their epiphytes (Cd, Cu, Fe and Zn), and Ulva lactuca (Cd, Cu, Fe. Mn, Pb and Zn) from Cockburn Sound, Western Australia, are reported. The highest concentrations of Cd; Cr and Pb in M. edulis and Cd and Zn in O. angasi were found in those animals taken from the vicinity of industrial effluent discharge points. Further, elevated concentrations of some metals were noted in the hepatopan- creas of Portunus pelagicus and in C. variopedatus and U. lactuca. Significant correlation coefficients for Cd-Cu, Cd-Fe, Cd-Zn, Cu-Fe, Cu-Zn and Fe-Zn in M. edulis indicated that elevated heavy metal levels resulted from industrial effluent discharges. Significant correlation coefficients for Cd-Zn and Cd-carapace width were found in the female crab P.pelagicus only. C. variopedatus and U. lactuca, unlike Posidonia spp. and their epiphytes, showed potential as trace metal indicators.

Biologi Rajungan Portunus pelagicus Linnaeus, 1758 (Crustacea: Portunidae) Ditinjau Dari Aspek Distribusi Ukuran Dan Parameter Pertumbuhan Di Perairan Rembang, Jawa Tengah

2019 ◽  
Vol 8 (4) ◽  
pp. 402-408
Author(s):  
Nathanael Ganang Anindityo Wibowo ◽  
Chrisna Adhi Suryono ◽  
Ibnu Pratikto
Keyword(s):  
Size Structure ◽  
Carapace Width ◽  
Growth Parameter ◽  
Survey Method ◽  
Average Weight ◽  
Swimming Crab ◽  
Female Crab ◽  
Potential Yield ◽  
Portunus Pelagicus ◽  
Male Crab

Rembang merupakan salah satu kabupaten di Jawa Tengah yang dikenal sebagai daerah penghasil sumberdaya rajungan yang cukup tinggi permintaannya dan terus meningkat setiap tahunnya. Hal tersebut dapat menyebabkan terjadinya penurunan potensi hasil rajungan akibat intensifnya penangkapan di Perairan Rembang. Kajian tentang kondisi stok sumberdaya rajungan  terkait sebaran dan dinamika populasi ini sangat diperlukan dalam pengelolaan potensi rajungan. Tujuan dari penelitian ini adalah untuk menganalisis struktur ukuran dan parameter pertumbuhan rajungan di Perairan Rembang. Penelitian ini dilaksanakan pada bulan Maret – Juni 2019 di Perairan Rembang, dengan menggunakan metode survei yang bersifat deskriptif. Total sampel rajungan selama penelitian adalah 1200 ekor yang terdiri dari 574 ekor jantan dan 624 ekor betina. Hasil penelitian menunjukkan kelas ukuran lebar karapas rajungan didominasi oleh rajungan muda, dengan rata – rata 105.01 ± 11.99 mm untuk jantan dan 107.73 ± 10.68 untuk betina. Berat rata – rata rajungan jantan yaitu sebesar 95.2 ± 27.1 gram dan rajungan betina sebesar 97.9 ± 23.1 gram, sehingga menunjukkan rajungan jantan lebih kecil dibandingkan dengan rajungan betina. Pola pertumbuhan rajungan di Perairan Rembang bersifat allometrik negatif. Laju pertumbuhan rajungan di Perairan Rembang yang didapatkan adalah berupa nilai panjang asimptotik (L∞) sebesar 71.4 mm dengan koefisien pertumbuhan (K) sebesar 1.5/tahun.Rembang is a coastal region in Central Java which known as to producer of blue swimming crab resources that are in high demand and continues to increase every year. It will because decreasing the potential yield of blue swimming crab due to intensive fishing in Rembang Waters. Study on the stock condition of the blue swimming crab resource related to the distribution and dynamics of the population is required for the management of the blue swimming crab potential. The current research aims to assess the size structure and growth parameter of blue swimming crab in the Rembang Waters. The research was conducted from March to June 2019 in Rembang Waters, using a descriptive survey method. The total number of crab samples during the study was 1200 animals consisting of 574 male and 624 female. The results showed that the size of the crab carapace width class was dominated by young crabs, with an average of 105.01 ± 11.99 mm for males and 107.73 ± 10.68 for females. The average weight of male crab is 95.2 ± 27.1 gram and female crab is 97.9 ± 23.1 gram, indicates that male crab is smaller than female crab. The crab’s growth in Rembang Waters is allometric negative. The growth rate of crab in the Rembang Waters obtained is in the form of asymptotic length (L∞) was 71.4 mm with a growth coefficient (K) 1.5/year.

scholarly journals Studies on Biological Test of Formulated Diets Supplementation of Vitamin E for the Broodstock of Females Blue Swimming Crab, Portunus pelagicus (Linnaeus, 1758)

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 1780 ◽  
Author(s):  
Efrizal Efrizal ◽  
Indra Junaidi Zakaria ◽  
Rusnam Rusnam ◽  
Suryati Suryati ◽  
Nofa Yolanda
Keyword(s):  
Vitamin E ◽  
Carapace Width ◽  
Coastal Region ◽  
Mass Scale ◽  
Dietary Vitamin ◽  
Swimming Crab ◽  
Female Crab ◽  
Portunus Pelagicus ◽  
Formulated Diets ◽  
Formulated Diet

Background: Currently, great progress in the artificial propagation of commercially important   portunid crabs of the genus Portunus has been achieved, and various methods have been adopted in mass-scale hatchery activities. This study analyzed the biological testing of formulated diets with different dose supplementations of vitamin E for the broodstock of female blue swimming crabs, P. pelagicus (Linnaeus, 1758) Methods: Female crab samples were collected from the coastal region of Padang, West Sumatra. The method used in this study was completely randomized design, with four treatment regimens (n=5 crabs each) of dietary vitamin E (0, 300, 600, and 900 IU/kg formulated diets). Results: The results show that the supplementation of vitamin E in the formulated diet had a significant effect (P <0.05) on the absolute weight growth, carapace length and carapace width. Conclusions: Supplementation of vitamin E on in formulated diet causes broodstock blue swimming crab molting, with a percentage value of 40–80% on day 20 and 20% on day 30, with a 100% survival rate.

Kajian Morfometri dan Tingkat Kematangan Gonad Rajungan di Perairan Betahwalang, Demak

2021 ◽  
Vol 10 (2) ◽  
pp. 175-183
Author(s):  
Iqbal Maulana ◽  
Irwani Irwani ◽  
Sri Redjeki
Keyword(s):  
Time Series ◽  
Size Structure ◽  
Growth Parameters ◽  
Carapace Width ◽  
Economic Value ◽  
Survey Method ◽  
Swimming Crab ◽  
Female Crab ◽  
Portunus Pelagicus ◽  
Gonad Maturity

Rajungan (Portunus pelagicus) merupakan komoditas laut yang memiliki nilai ekonomis yang tinggi, dimana berbanding lurus dengan penangkapan yang terus meningkat. Tingkat pemanfaatan yang tidak mengindahkan ukuran dan kondisi rajungan dapat mempengaruhi struktur ukuran dan stok rajungan di suatu perairan. Penelitian ini bertujuan untuk mengetahui distribusi ukuran, hubungan lebar dan berat rajungan serta distribusi tingkat kematangan gonad (TKG) di perairan Betahwalang, Demak. Penelitian menggunakan metode survey dengan analisis yang bersifat deskriptif yang dilakukan secara “time-series”. Pengamatan sampel rajungan sebesar 10% dari hasil tangkapan yang didaratkan oleh setiap nelayan di pengepul rajungan.. Hasil dari penelitian ini menujukkan dari 3030 ekor rajungan yang diamati diketahui distribusi lebar karapas rajungan berkisar antara 35 – 185 mm dan kisaran berat sebesar 10 – 350 gram. Rajungan yang terdapat di perairan Betahwalang memiliki pertumbuhan yang bersifat allometrik positif pada rajungan jantan dan betina pada bulan Januari serta Februari.  Hasil nilai b sebesar 3,29 dan 3,08 (Januari & Februari) pada rajungan jantan. Nilai b sebesar 3,10 dan 3,15  pada rajungan betina (Januari & Februari) serta nilai b sebesar 3,14 pada keseluruhan rajungan. Sehingga diketahui pertumbuhan lebar karapas lebih cepat dibandingkan bobot rajungan. Sedangkan distribusi tingkat kematangan gonad rajungan betina adalah 21% pada TKG 1; 63% pada TKG 2; serta 16% pada TKG 3, dengan ukuran pertama kali matang gonad adalah 141,51 mm. Blue swimming crab (Portunus pelagicus) is a marine commodity has a high economic value , which is causing the crab catch to rise as well. The catch rate that does not consider the size and maturity of sea crab can affect the size structure and population stock of sea crab in waters. This study aims to determine the size distribution,the relationship of width and weight of Blue swimming crab and distribution of gonad maturity in Betahwalang, Demak. There’s a descriptive survey method used in this study with time-series observations. The sample size is about 10% of the total number landed crab from each fisherman. The results of this study showed that from 3030 crabs observed, the distribution of crab carapace width ranged from 35 – 185 mm and the weight range at 10 – 350 gram. The results showed the all crabs has a positive allometric on growth parameters. The value of  b 3,29 and 3,08 (January & February) in male blue swimming crab, 3.10 and 3.15 (January & February) on female sea crabs, and 3.14 on whole sea crabs. So it is known that the growth of carapid width is faster than the weight of crab. While the distribution of female crab gonad maturity level is 21% in level 1; 63% in level 2; and 16% in level 3, with the first size of mature gonad at 141,51 mm.

scholarly journals Studies on Biological Test of Formulated Diets Supplementation of Vitamin E for the Broodstock of Females Blue Swimming Crab, Portunus pelagicus (Linnaeus, 1758)

F1000Research ◽  
2019 ◽  
Vol 7 ◽  
pp. 1780 ◽  
Author(s):  
Efrizal Efrizal ◽  
Indra Junaidi Zakaria ◽  
Rusnam Rusnam ◽  
Suryati Suryati ◽  
Nofa Yolanda
Keyword(s):  
Vitamin E ◽  
Carapace Width ◽  
Coastal Region ◽  
Mass Scale ◽  
Dietary Vitamin ◽  
Swimming Crab ◽  
Female Crab ◽  
Portunus Pelagicus ◽  
Formulated Diets ◽  
Formulated Diet

Background: Currently, great progress in the artificial propagation of commercially important   portunid crabs of the genus Portunus has been achieved, and various methods have been adopted in mass-scale hatchery activities. This study analyzed the biological testing of formulated diets with different dose supplementations of vitamin E for the broodstock of female blue swimming crabs, P. pelagicus (Linnaeus, 1758) Methods: Female crab samples were collected from the coastal region of Padang, West Sumatra. The method used in this study was completely randomized design, with four treatment regimens (n=5 crabs each) of dietary vitamin E (0, 300, 600, and 900 IU/kg formulated diets). Results: The results show that the supplementation of vitamin E in the formulated diet had a significant effect (P <0.05) on the absolute weight growth, carapace length and carapace width. Conclusions: Supplementation of vitamin E on in formulated diet causes broodstock blue swimming crab molting, with a percentage value of 40–80% on day 20 and 20% on day 30, with a 100% survival rate.

scholarly journals ASPEK BIOLOGI, DINAMIKA POPULASI DAN TINGKAT PEMANFAATAN RAJUNGAN (Portunus pelagicus Linnaeus, 1758) DI PERAIRAN KOTABARU, KALIMANTAN SELATAN

2018 ◽  
Vol 23 (3) ◽  
pp. 205
Author(s):  
Tirtadanu Tirtadanu ◽  
Ali Suman
Keyword(s):  
Population Dynamic ◽  
Random Sampling ◽  
Sampling Method ◽  
Carapace Width ◽  
Landing Site ◽  
Fishing Effort ◽  
Biological Study ◽  
Female Crab ◽  
Portunus Pelagicus ◽  
Biological Aspects

Penangkapan rajungan yang intensif di perairan Kotabaru memerlukan kajian biologi dan dinamika populasi sebagai dasar dalam menentukan pengelolaan yang tepat. Penelitian ini bertujuan untuk mengkaji aspek biologi, dinamika populasi dan tingkat pemanfaatan sumberdaya rajungan di perairan Kotabaru. Penelitian dilakukan pada Januari – November 2016 di daerah pendaratan rajungan di Kotabaru. Pengambilan sampel dilakukan tiap bulan berbasis enumerator dengan metode random sampling. Analisis dinamika populasi dilakukan dengan model analitik berdasarkan pergeseran modus struktur ukuran lebar karapas. Hasil penelitian menunjukkan modus ukuran rajungan tertangkap adalah 110 mmCW pada jantan dan 120 mmCW pada betina. Pertumbuhan bobot rajungan jantan lebih tinggi dibandingkan betina. Nisbah kelamin rajungan tidak seimbang dengan perbandingan jantan dan betina adalah 1,7 : 1. Ukuran rata-rata pertama kali matang gonad (Lm) rajungan betina adalah 110,25 mmCW. Lebar karapas asimptotik (CW) rajungan adalah 179,2 mmCW pada jantan dan 183,6 mmCW pada betina. Laju pertumbuhan rajungan (K) adalah 1,36 per tahun pada jantan dan 1,11 per tahun pada betina. Laju eksploitasi (E) rajungan sebesar 0,68 pada jantan dan 0,77 pada betina menunjukkan tingkat pemanfaatan lebih tangkap (overfishing). Pengelolaan yang disarankan adalah mengurangi upaya penangkapan sekitar 54% dari 4.190 unit armada jaring rajungan, penentuan ukuran minimum rajungan yang boleh tertangkap sebesar 110 mmCW sebagai masukan bila ada revisi terhadap peraturan tentang penangkapan rajungan dan dilakukan penutupan penangkapan pada beberapa daerah asuhan. Intensive fishing on blue swimming crab (Portunus pelagicus Linnaeus, 1758) in Kotabaru waters requires biological study and population dynamic as bases to determine proper management. The current research aims to study biological aspects, population dynamic and exploitation rate of crab in Kotabaru waters. The research was conducted on January-November 2016 at landing site of crab in Kotabaru. Samples were collected every month by enumerator with random sampling method. Population dynamic was analysed by analytical model. Results show that the mode of carapace width was 110 mmCW in males and 120 mmCW in females. The growth in weight of male was greater than female. Sex ratio of male and female crabs was (1.7:1). Length at first (Lm) of female crab was 110.25 mmCW. The asymptotic carapace width (CW) of crab was 179.2 mmCW for male and 183.6 mmCW for female. The growth rate of crab (K) was 1.36 year-1 for male and 1.11 year-1 for female. The explotation rate (E) of crab was 0.68 for males and 0.77 for female so that the exploitation was overfished. From the results obtained, it suggests that the fishing effort should be reduced to 54% of 4.190 gillnet fleet and the minimum legal size would be at 110 mmCW as input for regulation if is needed and it should be determined the closure of fishing activities in some nursery grounds. 

scholarly journals Bioaccumulation of heavy metals in the water, sediment and the tissues of Carassius gibelio (Bloch, 1782) from Eber Lake

2021 ◽  
Vol 38 (4) ◽  
pp. 507-514
Author(s):  
Numan Emre Gümüş ◽  
Cengiz Akköz
Keyword(s):  
Public Health ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Spring Season ◽  
Fish Tissues ◽  
The Public ◽  
Heavy Metal Concentrations ◽  
Carassius Gibelio ◽  
Metal Contents ◽  
Metal Levels

In this research, in order to observe the seasonal change between April 2014 and February 2015, heavy metal contents in the water, sediment and the Carassius gibelio (Bloch, 1782) tissues (muscle, gill and liver) growing in Eber Lake were determined. The obtained results showed that trace elements were founded in water, sediment and fish tissues. Among the average annual concentrations of water samples, the highest concentration was found for Mn (0.1584 mg/L) element and the lowest concentration was found for Pb element in the spring season. the maximum Average annual concentration was calculated for Mn (0.1584 mg/L, Spring) and the minimum was determined for Pb in water. In the sediment, Fe (16245.84 mg/kg, Spring) was found to be maximum and Co was the minimum. In fish, the highest concentrations were found in liver (Mo, Ni, Pb, Co, Cu, Fe), while the lowest concentrations were found in gill (Mn, Zn) and muscle (Cd, Cr, Se) tissues While the highest heavy metal concentrations were observed in the sediment, the minimum was found in the fish tissues (the ranking was the following; liver, gill and muscle). It was concluded that the heavy metal levels measured in the Lake Eber have no risk to the environment and to the public health.

scholarly journals Aspek Morfometri Dan Tingkat Kematangan Gonad Rajungan (Portunus pelagicus) Linnaeus, 1758 (Malacostraca:Portunidae) di Perairan Betahwalang Demak

2020 ◽  
Vol 9 (1) ◽  
pp. 25-34
Author(s):  
Muhammad Amanun Tharieq ◽  
Sunaryo Sunaryo ◽  
Adi Santoso
Keyword(s):  
Time Series ◽  
Growth Parameters ◽  
Carapace Width ◽  
Total Sample ◽  
Survey Method ◽  
Swimming Crab ◽  
Female Crab ◽  
Portunus Pelagicus ◽  
Descriptive Survey ◽  
Egg Diameter

ABSTRAK: Rajungan (P. pelagicus, Linnaeus, 1758) adalah salah satu hasil perikanan utama di Betahwalang, Demak. Penangkapan rajungan diduga dilakukan secara intensif oleh nelayan di Des Betahwalang, maka diperlukan langkah pengelolaan yang tepat untuk menjaga kelestarian dan konservasi rajungan. Informasi aspek morfometri rajungan bias digunakan sebagai salah satu acuan dalam pengelolaan rajungan berkelanjutan. Tujuan penelitian adalah untuk mengkaji tingkat kematangan gonad dan morfometri rajungan yang dilaksanakan pada bulan Juli – September 2019 di Desa Betahwalang, Demak. Penelitian menggunakan metode survey dengan analisis yang bersifat deskriptif yang dilakukan secara “time-series”. Pengamatan sampel rajungan sebesar 10% dari hasil tangkapan yang didaratkan oleh setiap nelayan di pengepul rajungan. Total rajungan yang diamati 5.480 ekor terdiri dari betina 2.960 ekor dan jantan 2.388 ekor. Hasil penelitian menunjukkan pertumbuhan rajungan jantan bersifat allometrik positif, sedangkan rajungan betina cenderung bersifat allometrik negatif dengan seks rasio relatif seimbang. Rajungan betina diduga mengalami pertama kali matang gonad pada selang kelas lebar karapas 70 – 79 mm. Sampel pengamatan fekunditas dan kematangan telur pada 126 ekor rajungan betina bertelur. Kematangan telur dilihat dari pigmen warnanya secara berurutan mulai pigmen warna kuning, orange, coklat dan hitam, serta berdasarkan ukuran diameter telur. Fekunditas telur memiliki korelasi yang sangat kuat terhadap lebar karapas yang berarti semakin besar ukuran rajungan, maka jumlah telur semakin banyak. Selama penelitian masih ditemukan rajungan “undersize” sebesar 18% (981 ekor) dan rajungan betina bertelur sebesar 24% (716 ekor), yang berarti nelayan di Desa Betahwalang belum menerapkan kriteria dan ukuran layak tangkap sesuai dengan peraturan yang berlaku.ABSTRACT: Blue swimming crab (P. pelagicus, Linnaeus, 1758) is one of main fisheries products in Betahwalang, Demak. High-intensity levels of catching the blue swimmer crab by fisherman may need sustainable management to protect and conserve the population. The purpose of this study was to determine about gonad maturity level and morphometrical aspect of blue swimming crab started from July – September 2019. There’s a descriptive survey method used in this study with time-series observations. The sample size is about 10% of the total number landed crab from each fisherman. The total sample are 5.348 that consist of 2.960 female crabs and 2.388 male crabs. The results showed the male crabs has a positive allometric on growth parameters, but the females have an allometric positive and negative growth parameters, and balanced sex-ratio. Female crabs may reach the first matured gonad level between 70 – 79 mm of carapace width. Fecundity and egg’s maturity observation used 126 berried female crabs. The egg’s maturity based on the pigment color started from yellow, became orange, brown and black also by egg diameter increase. The analysis showed that female crab fecundity has a strong correlation to the increase of carapace width, which means carapace width increase followed by egg’s amount increasing. During the study, it was found about 18% (981 crabs) the undersize crabs (<100 mm) and 24% (716 crabs) the berried female crabs, which means the Betahwalang fisherman hasn’t applied the rule yet.

scholarly journals The Analysis of Heavy Metal Concentrations in Eggs of Collared Flycatchers, Ficedula Albicollis (Passeriformes, Muscicapidae), and Tits, Parus Major, Parus Caeruleus (Passeriformes, Paridae), in Different Areas of North-Eastern Ukraine

2016 ◽  
Vol 50 (3) ◽  
pp. 259-266 ◽  
Author(s):  
A. B. Chaplygina ◽  
D. I. Yuzyk
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Parus Major ◽  
Normal Growth ◽  
Parus Caeruleus ◽  
Ficedula Albicollis ◽  
Metal Concentrations ◽  
Forest Park ◽  
Heavy Metal Concentrations ◽  
Metal Levels

Abstract Collared flycatchers (Ficedula albicollis Temminck, 1815), have more opportunities to accumulate heavy metals due to migration but they are more resistant to contamination in contrast to tits, (Parus major Linnaeus, 1758, Parus caeruleus Linnaeus, 1758). This research aimed to detect concentrations of some trace elements in eggs of the collared flycatcher, great tit and blue tit in different areas. There were found differences in heavy metal concentrations in the eggs among species and study areas. For collared flycatchers there were not established consistent patterns of changes in element concentrations among areas. The highest heavy metal levels were found in tits in samples of egg contents from a forest park (Pb - 3.1410 ± 0.3249, Cu - 19.3290 ± 1.4840, Zn - 66.9612 ± 17.6665, Fe - 249.5513 ± 40.2800, Mn - 6.9032 ± 0.2946, Ca - 8298.3570 ± 0.1080, Sr - 17.6032 ± 0.7512, Ni - 0.5177 ± 0.0220). The lowest concentrations were found in egg contents of tits in Hetmanskyi National Nature Park (Cu - 4.3492 ± 0.2079, Fe - 44.6647 ± 0.2627, Mn - 1.3194 ± 0.2374, Ca - 998.7001 ± 0.0006, Ni - 0.2443 ± 0.0439, Cr - 0.1466 ± 0.0424). The results indicate that heavy metals accumulated differently in shells and contents of eggs of collared flycatchers and tits in each of the study area. Some of microelements (zinc, mercury, iron, manganese, selenium and iodine) in small amounts are required for normal growth and development of birds. Heavy metal concentrations in egg shells and egg contents of all species did not exceed permissible levels.

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