Author
Neviaty P. Zamani
Bio: Neviaty P. Zamani is an academic researcher from Bogor Agricultural University. The author has contributed to research in topics: Coral reef & Coral. The author has an hindex of 11, co-authored 90 publications receiving 511 citations.
Topics: Coral reef, Coral, Reef, Perna viridis, Biology
Papers
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TL;DR: It is suggested that microplastics constitute a new seston component that exerts a stress comparable to natural suspended solids similar to that experienced by marine bivalves during prolonged periods of valve closure.
136 citations
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28 Apr 2018TL;DR: Hendy Normal Hendy 2 5 2018-07-23T02:29:00Z2018-07/23T2:29/23/2018 2.00 Clean Clean Clean false false falsefalse false false IN XNONE X-NONE /* Style Definitions */======¯¯¯¯ table.
Abstract: Hendy Normal Hendy 2 5 2018-07-23T02:29:00Z 2018-07-23T02:29:00Z 1 178 1016 8 2 1192 15.00 Clean Clean false false false false IN X-NONE X-NONE /* Style Definitions */
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Cumi-cumi memiliki kantung tinta yang mengandung melanin dalam bentuk melanoprotein , asam glutamat dan asam aspartat yang memberikan rasa sedap dan gurih . Tinta cumi digunakan sebagai pewarna hitam alami dan termasuk limbah yang belum dimanfaatkan secara maksimal . Penelitian ini bertujuan untuk menentukan persentase fortifikasi tinta cumi-cumi pada cup cake berdasarkan tingkat kesukaan panelis. Metode penelitian yang digunakan adalah metode eksperimental dengan 5 perlakuan penambahan tinta cumi-cumi ( 0%, 0.5%, 1%, 1.5%, dan 2%) berdasarkan berat tepung terigu. Parameter yang diamati dalam penelitian adalah rendemen tinta cumi-cumi, tingkat kesukaan (uji hedonik) terhadap karakteristik kenampakan, aroma, tekstur dan rasa cup cake , kadar air, abu, protein dan lemak. Hasil penelitian menunjukkan bahwa semua perlakuan penambahan tinta cumi-cumi masih disukai. Perlakuan penambahan tinta cumi-cumi 1,5% merupakan perlakuan yang lebih disukai panelis dibandingkan perlakuan lainnya, dengan karakteristik kenampakan 6,4±1,73, aroma 7,3±1,49, tekstur 7,3±2,08 (disukai), rasa 8,4±1,47 (sangat disukai) dan nilai serta dengan kadar air 32,77%; abu 1,76%, protein 11,74% dan lemak 18,20%
42 citations
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TL;DR: This study would bean important data in the genetic management for the sustainable conservation and trade of grouper (Epinephelus spp.) in Indonesia and needs further application on the molecular phylogenetic approach to avoid misidentification and due to high variety of species landing at local fish market.
Abstract: Jefri E, Zamani EP, Subhan B, Madduppa HH. 2015. Molecular phylogeny inferred from mitochondrial DNA of the grouper Epinephelus spp. in Indonesia collected from local fish market. Biodiversitas 16: 254-263. Groupers are widely distributed in thetropical and subtropical coastal waters, and are globally one of the most commercially important groups of marine fish, commandinghigh market price and are being heavily targeted in fisheries. Over fishing in Indonesia becomes a pivotal factor, which is seriouslythreatening the grouper biodiversity, as separate catch statistics are not reported for most species, and landings are often summarized as‘serranids’ or ‘groupers’. This lack of species-specific catch data is due to the difficulty of identifying many of the species. The focus ofthis study was the tracking of molecular phylogeny of Epinephelus spp. of the family Serranidae. DNA amplification usingmitochondrial cytochrome oxidase I resulted in 526-base pairs long sequences all samples. A total of seven species were characterizedthat are (Epinephelus areolatus, E. merra, E. fasciatus, E. longispinis, E. coioides, E. ongus and E. coeruleopunctatus). All of whichwere found to belong to 7 different clades in the constructed phylogenetic tree. E. ongus is genetically closest to E. coeruleopunctatuswith genetic distance 0.091 (9%), whereas the farthest genetic distance was successfully identified between E. ongus and E. merra withgenetic distance 0.178 (18%). Migration activity on spawning and movement of larvae that are affected by Indonesian Through flowsuspected as the cause of the closeness between species grouper Epinephelus spp. in the phylogeny tree from several Indonesian seas,although information about the location and time of Epinephelus spp. spawning activity sometimes difficult to obtain certainty. Fishidentification using molecular phylogenetic approach has been successfully applied in this study. It seems need further application onthis method to avoid misidentification and due to high variety of species landing at local fish market. Nevertheless, this study would bean important data in the genetic management for the sustainable conservation and trade of grouper (Epinephelus spp.) in Indonesia.
39 citations
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01 Jan 2014
TL;DR: Based on phylogenetic analysis, no genetic differentiation between the two populations in Moluccas Sea was revealed and a better understanding of yellowfin tuna genetic diversity is required to plan better conservation strategy of tuna.
Abstract: . Yellowfin tuna (Thunnus albacores) is a large, pelagic, and migratory species of tuna that inhabits Moluccas Sea in Indonesia, and most sea environment worldwide. However, high fishing activities tend to happen in the Indonesia region and catch product appear to be decreasing. A better understanding of yellowfin tuna genetic diversity is required to plan better conservation strategy of tuna. The study was conducted to infer the genetic diversity of yellowfin tuna (T. albacores) in the Moluccas Sea. A total of 41 tissue samples of yellowfin tuna were collected from two regions in the Moluccas Sea (North Moluccas and Ambon) during an expedition in February 2013. The results showed that genetic diversity and nucleotide diversity of yellowfin tuna from North Moluccas population was 0.984 and 0.021, respectively; while in Ambon population, the genetic and nucleotide diversities were 1.00 and 0.018, respectively. The high genetic diversity (0.990) and nucleotide diversity (0.020) between two populations were observed. Based on phylogenetic analysis, no genetic differentiation between the two populations in Moluccas Sea was revealed . Keywords : Population genetics ; Haplotype diversity ; Coral Triangle ; Phylogenetics ; Polymerase Chain Reactions (PCRs) Abstrak. Tuna sirip kuning ( Thunnus albacores ) adalah ikan komersial penting dan ditemukan di Laut Maluku, Indonesia. Tetapi, aktivitas penangkapan ikan tuna sirip kuning dapat menurunkan kualitas dan kuantitas stok ikan, sehingga perlu adanya pengkajian keragaman genetik ikan tuna sirip kuning. Pemahaman yang baik tentang keragaman genetika dibutuhkan untuk merencanakan strategi konservasi tuna yang lebih baik. Penelitian ini bertujuan untuk mengetahui keragaman genetik ikan tuna sirip kuning dari dua populasi di Laut Maluku. Sebanyak 41 sampel jaringan dari tuna sirip kuning dikumpulkan dari dua populasi di Laut Maluku (Maluku Utara dan Ambon) selama ekspedisi pada bulan Februari 2013. Hasil penelitian menunjukkan bahwa keragaman genetik populasi tuna sirip kuning pada perairan Maluku Utara dan Ambon masing-masing sebesar 0,984 dan 1,00 sedangkan nilai keragaman nukleotida masing-masing bernilai 0,021 dan 0,018. Nilai keragaman genetik dan keragaman nukloetida yang tinggi didaptkan antar kedua populasi masing-masing sebesar 0,990 dan 0,020. Berdasarkan analisis filogenetik, dua populasi di Laut Maluku ini memiliki kedekatan secara genetik. Kata kunci : Genetika populasi; Keragaman haplotipe; Segitiga Terumbu Karang; Filogenetika; Polymerase Chain Reaction (PCR)
24 citations
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Leibniz Institute of Marine Sciences1, Bogor Agricultural University2, University of Helsinki3, University of Rostock4, University of Mainz5, Federal Fluminense University6, University of Freiburg7, Swedish University of Agricultural Sciences8, University of Tübingen9, Catholic University of the North10, University of Southampton11
TL;DR: The results suggest that heat challenges, which marine invertebrates experience during transport, can enhance stress tolerance in founder populations of these species in their non-native range by potentially increasing the frequency of genetically adapted genotypes.
Abstract: It is unclear whether transport by human vectors can increase the robustness of translocated populations and thereby enhance their invasiveness. To test this concept, we investigated the effect of heat stress on the tolerance of mussel populations towards a second stress event of the same kind. The heat challenges we mimicked can be faced by marine invertebrates that are transported through regions with high sea surface temperatures on ship hulls or in ballast water tanks. The study included 5 mussel species that were collected at sites in Brazil, Chile, Finland, Germany (Baltic Sea) and Portugal. In parallel laboratory experiments, monospecific groups of individuals were exposed to heat challenges that caused 60–83% mortality in the experimental groups within 15–28 days. The surviving individuals were exposed to a second stress event of the same kind, while their survival was then compared to the robustness of conspecifics that had not been exposed to elevated temperatures before. We observed that thermal tolerance was significantly enhanced by previous heat stress experience in case of Semimytilus algosus from Chile and in case of Mytilus edulis from Germany. Our results suggest that heat challenges, which marine invertebrates experience during transport, can enhance stress tolerance in founder populations of these species in their non-native range by potentially increasing the frequency of genetically adapted genotypes. This points at the necessity to learn more about selection acting on organisms during human-mediated transport—in the aquatic but also in the terrestrial environment.
20 citations
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01 Jan 2015
TL;DR: The work of the IPCC Working Group III 5th Assessment report as mentioned in this paper is a comprehensive, objective and policy neutral assessment of the current scientific knowledge on mitigating climate change, which has been extensively reviewed by experts and governments to ensure quality and comprehensiveness.
Abstract: The talk with present the key results of the IPCC Working Group III 5th assessment report. Concluding four years of intense scientific collaboration by hundreds of authors from around the world, the report responds to the request of the world's governments for a comprehensive, objective and policy neutral assessment of the current scientific knowledge on mitigating climate change. The report has been extensively reviewed by experts and governments to ensure quality and comprehensiveness.
3,224 citations
30 Apr 1984
TL;DR: A review of the literature on optimal foraging can be found in this article, with a focus on the theoretical developments and the data that permit tests of the predictions, and the authors conclude that the simple models so far formulated are supported by available data and that they are optimistic about the value both now and in the future.
Abstract: Beginning with Emlen (1966) and MacArthur and Pianka (1966) and extending through the last ten years, several authors have sought to predict the foraging behavior of animals by means of mathematical models. These models are very similar,in that they all assume that the fitness of a foraging animal is a function of the efficiency of foraging measured in terms of some "currency" (Schoener, 1971) -usually energy- and that natural selection has resulted in animals that forage so as to maximize this fitness. As a result of these similarities, the models have become known as "optimal foraging models"; and the theory that embodies them, "optimal foraging theory." The situations to which optimal foraging theory has been applied, with the exception of a few recent studies, can be divided into the following four categories: (1) choice by an animal of which food types to eat (i.e., optimal diet); (2) choice of which patch type to feed in (i.e., optimal patch choice); (3) optimal allocation of time to different patches; and (4) optimal patterns and speed of movements. In this review we discuss each of these categories separately, dealing with both the theoretical developments and the data that permit tests of the predictions. The review is selective in the sense that we emphasize studies that either develop testable predictions or that attempt to test predictions in a precise quantitative manner. We also discuss what we see to be some of the future developments in the area of optimal foraging theory and how this theory can be related to other areas of biology. Our general conclusion is that the simple models so far formulated are supported are supported reasonably well by available data and that we are optimistic about the value both now and in the future of optimal foraging theory. We argue, however, that these simple models will requre much modification, espicially to deal with situations that either cannot easily be put into one or another of the above four categories or entail currencies more complicated that just energy.
2,709 citations
01 Jan 2016
TL;DR: This computation and interpretation of biological statistics of fish populations, but end up in harmful downloads so that people cope with some infectious bugs inside their laptop.
Abstract: Thank you for reading computation and interpretation of biological statistics of fish populations. As you may know, people have search numerous times for their favorite books like this computation and interpretation of biological statistics of fish populations, but end up in harmful downloads. Rather than enjoying a good book with a cup of coffee in the afternoon, instead they cope with some infectious bugs inside their laptop.
1,112 citations
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TL;DR: The concept of microplastic as a complex, dynamic mixture of polymers and additives, to which organic material and contaminants can successively bind to form an ‘ecocorona’, increasing the density and surface charge of particles and changing their bioavailability and toxicity is developed.
Abstract: Marine microscopic plastic (microplastic) debris is a modern societal issue, illustrating the challenge of balancing the convenience of plastic in daily life with the prospect of causing ecological harm by careless disposal. Here we develop the concept of microplastic as a complex, dynamic mixture of polymers and additives, to which organic material and contaminants can successively bind to form an 'ecocorona', increasing the density and surface charge of particles and changing their bioavailability and toxicity. Chronic exposure to microplastic is rarely lethal, but can adversely affect individual animals, reducing feeding and depleting energy stores, with knock-on effects for fecundity and growth. We explore the extent to which ecological processes could be impacted, including altered behaviours, bioturbation and impacts on carbon flux to the deep ocean. We discuss how microplastic compares with other anthropogenic pollutants in terms of ecological risk, and consider the role of science and society in tackling this global issue in the future.
1,089 citations