Marine Biology
Research Interests:
It is well known that the attachment of the buds to the substrate is essential for the normal morphogenetic development of zoodis in most of the fossil and extant bryozoans of the class Eurystomata. It is the author's opinion that this... more
It is well known that the attachment of the buds to the substrate is essential for the normal morphogenetic development of zoodis in most of the fossil and extant bryozoans of the class Eurystomata. It is the author's opinion that this mechanism emerged in the encrusting ancestors of this class. This paper deals with the possible evolutionary paths of substrate-dependent growth and discusses its importance for the morphogenesis of Cheilostomata.
Research Interests:
The substrate dependence of growth and development of the buds in bryozoans, which has been known for a long time, remains little studied. Classification of the substrate reactions of buds, which can be distinguished at the... more
The substrate dependence of growth and development of the buds in bryozoans, which has been known for a long time, remains little studied. Classification of the substrate reactions of buds, which can be distinguished at the macro-morphological level , has shown that each species has a limited set of ways of "substrate reaction," which are correlated with a certain type of three-dimensional colony organization. When the "normal" shape of buds is disturbed by external factors, there are some feature s of deviation of the morphological and histological differentiation of the ectodermal epithelium and its derivative from the normal condition. It has been proposed that these processes depend on the external bud shape, which depends, in turn, on attachment to the substrate (the bud is spread during attachment).
Research Interests:
The study aims to determine some reproductive biology aspects of two sea cucumbers Paracaudina australis and Phyllophorus sp. From East Coastal of Surabaya, Indonesia were studied by histological analysis on serial cross section of... more
The study aims to determine some reproductive biology aspects of two sea cucumbers Paracaudina
australis and Phyllophorus sp. From East Coastal of Surabaya, Indonesia were studied by histological
analysis on serial cross section of gonadal tubules. Samples were taken in February to April 2012, 25
samples were collected monthly.
The result showed that both have separated sexes and asynchronous reproductive pattern, enabling
them to spawn throughout the year. Individually, it showed that in each tubule of gonad, P. australis
has synchronous pattern of development while Phyllophorus sp. has asynchronous pattern. The
gonadal tubule of the Phyllophorus sp. is more fixed shape than those observed for the P. australis.
The female gonadal tubule of Phyllophorus sp. contains various sizes of mature oocytes which are
larger than P. australis has and almost fulfill the lumen. The male gonadal tubule of P. australis is
more digitated than Phyllophorus sp. has.
australis and Phyllophorus sp. From East Coastal of Surabaya, Indonesia were studied by histological
analysis on serial cross section of gonadal tubules. Samples were taken in February to April 2012, 25
samples were collected monthly.
The result showed that both have separated sexes and asynchronous reproductive pattern, enabling
them to spawn throughout the year. Individually, it showed that in each tubule of gonad, P. australis
has synchronous pattern of development while Phyllophorus sp. has asynchronous pattern. The
gonadal tubule of the Phyllophorus sp. is more fixed shape than those observed for the P. australis.
The female gonadal tubule of Phyllophorus sp. contains various sizes of mature oocytes which are
larger than P. australis has and almost fulfill the lumen. The male gonadal tubule of P. australis is
more digitated than Phyllophorus sp. has.
Research Interests:
The objectives of this research were to obtain diversity, relative abundance, distribution, and habitat preference of sea cucumber species along east Surabaya coastal. Identification, data distribution, relative abundance and habitat... more
The objectives of this research were to obtain diversity, relative abundance, distribution, and habitat
preference of sea cucumber species along east Surabaya coastal. Identification, data distribution, relative abundance
and habitat preference of sea cucumbers were observed at 12 sites along Surabaya east coastal. Parameters to
describe environment were water depth, brightness level of water, pH (water and substrate), salinity (water and
substrate) and the texture of substrate. The texture of substrate was determined based on particles diameter of
substrate (ASTM method). The research revealed that during September 2009 until October 2010, physical and
chemical parameters of environment didn’t change relatively, and the sea cucumber community in east Surabaya
coastal composed of seven species, namely Phyllophorus dobsoni, Paracaudina australis, Cholochirus
quadrangularis, Holothuria sanctori, Holothuria sp., H. forskali, and H. turriscelsa. Phyllophorus dobsoni was
the most abundant species and could be found almost at all sampling sites while sandy substrate was the preferred
habitat.
preference of sea cucumber species along east Surabaya coastal. Identification, data distribution, relative abundance
and habitat preference of sea cucumbers were observed at 12 sites along Surabaya east coastal. Parameters to
describe environment were water depth, brightness level of water, pH (water and substrate), salinity (water and
substrate) and the texture of substrate. The texture of substrate was determined based on particles diameter of
substrate (ASTM method). The research revealed that during September 2009 until October 2010, physical and
chemical parameters of environment didn’t change relatively, and the sea cucumber community in east Surabaya
coastal composed of seven species, namely Phyllophorus dobsoni, Paracaudina australis, Cholochirus
quadrangularis, Holothuria sanctori, Holothuria sp., H. forskali, and H. turriscelsa. Phyllophorus dobsoni was
the most abundant species and could be found almost at all sampling sites while sandy substrate was the preferred
habitat.
Research Interests:
Research Interests:
The objective of research was to determine the suitability and carrying capacity of Tanjung Pasir Coast and Untung Jawa Island for tourism. Research was conducted through survey descriptively and evaluative approaches to obtain primary... more
The objective of research was to determine the suitability and carrying capacity of Tanjung Pasir Coast and Untung Jawa Island for tourism. Research was conducted through survey descriptively and evaluative approaches to obtain primary data while secondary data also collected as supporting. The suitability of Tanjung Pasir Beach for
tourism was 83.33 (highly suitable), Untung Jawa Beach 78.57 and 85.71 (highly suitable), mangrove 56.14
(suitable), but snorkeling 42.11 (not suitable) and 56.14 (suitable). Carrying capacity for tourism in the beach of
Tanjung Pasir were 162 tourists/day, Untung Jawa 74 tourists/day, mangrove tourism 69 tourists/day, and
snorkeling 20 tourists/day. However, the actual numbers of tourists in the region have exceeded the carrying capacity. Therefore, the control of tourists number is needed in order to match the carrying capacity of its environment as a management measure.
tourism was 83.33 (highly suitable), Untung Jawa Beach 78.57 and 85.71 (highly suitable), mangrove 56.14
(suitable), but snorkeling 42.11 (not suitable) and 56.14 (suitable). Carrying capacity for tourism in the beach of
Tanjung Pasir were 162 tourists/day, Untung Jawa 74 tourists/day, mangrove tourism 69 tourists/day, and
snorkeling 20 tourists/day. However, the actual numbers of tourists in the region have exceeded the carrying capacity. Therefore, the control of tourists number is needed in order to match the carrying capacity of its environment as a management measure.
Research Interests:
Cephalopods are often celebrated as masters of camouflage, but their exploitation of the soft-sediment habitats that dominate the ocean floor has demanded other anti-predator strategies. Previous research has identified a small number of... more
Cephalopods are often celebrated as masters of camouflage, but their exploitation of the soft-sediment habitats that dominate the ocean floor has demanded other anti-predator strategies. Previous research has identified a small number of cephalopods capable of burying into sand and mud, but the need to directly access the water column for respiration has restricted them to superficial burying. Here, we report on the first known sub-surface burrowing in the cephalopods, by Octopus kaurna, a small benthic species that uses advanced sand-fluidisation and adhesive mucus for sediment manipulation. This burrowing strategy appears linked to easily fluidised sediments as shown in experimental trials in three size-grades of sediment. While the selective pressures that drove evolution of this behaviour are unknown, its identification enriches our understanding of the possible life-history traits and functional role of mucus in other benthic octopus species living in soft-sediment environments.
Research Interests:
Recently, the impacts of ocean acidification (OA) on marine animal behaviour have garnered considerable attention, as they can impact biological interactions and, in turn, ecosystem structure and functioning. We synthesize current... more
Recently, the impacts of ocean acidification (OA) on marine animal behaviour have garnered considerable attention, as they can impact biological interactions and, in turn, ecosystem structure and functioning. We synthesize current understanding of how a high CO2 ocean may impact animal behaviour, elucidate critical unknowns, and provide suggestions for future research by reviewing current published literature surrounding OA and marine behaviour. Although studies have focused equally on vertebrates and invertebrates, vertebrate studies have primarily focused on coral reef fishes, in contrast to the broader diversity of invertebrate taxa studied. A meta-analysis of the direction and magnitude of change in behaviours from current conditions under OA scenarios suggests primarily negative impacts that vary depending on species, ecosystem, and behaviour. The interactive effects of co-occurring environmental parameters with CO2 elicit different effects than those observed under elevated CO2 alone, though only 12% of studies have incorporated multiple factors; only one study has examined the effects of carbonate system variability on the behaviour of a marine animal. Altered GABA-A receptor functioning under elevated CO2 appears responsible for many behavioural responses; however, this mechanism is unlikely to be universal. We recommend a new focus on determining the behavioural effects of elevated CO2 in the context of multiple environmental drivers and future carbonate system variability, and gaining a better mechanistic understanding of the association between acid-base regulation and GABA-A receptor functioning. This knowledge could explain observed species-specificity in behavioural responses to OA and lend to a unifying theory of OA effects on marine animal behaviour.
Research Interests:
The deep sea squid Asperoteuthis acanthoderma (family: Chiroteuthidae) is reported here for the first time from the Arabian Sea of the India. A single specimen was collected while conducting a trial fishing with 49.5m Cosmos mid water... more
The deep sea squid Asperoteuthis acanthoderma (family: Chiroteuthidae) is reported here for the first time from the Arabian Sea of the India. A single specimen was collected while conducting a trial fishing with 49.5m Cosmos mid water trawl onboard FORV Sagar Sampada between latitude 11o 47.767’N and longitude 73o 39.065’E at a depth range of 350 to 400 m during the month of October 2013. The morphometric measurements of the specimen are described and are compared with the same species reported from the North Atlantic Ocean. The female specimen measured 788 mm in standard length, 22.50 mm in mantle length, 89.26 mm fin length and weighed 85.38 gm.
Research Interests:
The purpose of this study was to determine distribution and abundance macrozoobenthos at Tangerang coastal waters, Banten. Study was carried out from April to August 2013 at Tangerang coastal waters, Banten with purposive sampling method... more
The purpose of this study was to determine distribution and abundance macrozoobenthos at Tangerang coastal waters, Banten. Study was carried out from April to August 2013 at Tangerang coastal waters, Banten with purposive sampling method and similarity Bray Curtis analysis using minitab.v15.1.2-Equinox softwere. A total of 5458 individuals macrozoobenthos were recorded during the study, its were belonging to 74 species The abundances of macrozoobenthos at Tanjung Pasir location was 634 ind/m2 dominated by Tellina palatum and Tellina timorensis, Kronjo location was 595 ind/m2 dominated by Codakia puncata and lower macrozoobenthos Cituis location was 177 ind/m2 dominated by Clitellio arenarius and Codakia puncata. The spatial distributin based on similarity Bray-Curtis analysis showed that the Kronjo, Cituis, and Tanjung Pasir locations generate four, three, and five groups, respectively. Nuculana bicuspidata dan Ophryotrocha puerilis was a cosmopolite macrozoobenthos were found at all locations. Generaly, the macrozoobenthos distribution at Tangerang coastal waters were strongly depended on the types of sedimen and dissolved oxygen concentration
Research Interests:
Perspectives in Citizen Science using examples from marine citizen science projects
Research Interests:
Gas chromatography mass spectroscopy was applied to characterize the metabolic profiles of hatchery-reared mussel (Perna canaliculus) larvae before and after a prolonged handling and water exchange process, and to investigate the effect... more
Gas chromatography mass spectroscopy was applied to characterize the metabolic profiles of hatchery-reared mussel (Perna canaliculus) larvae before and after a prolonged handling and water exchange process, and to investigate the effect of culture conditions. A decrease in succinate and an increase in alanine were observed after the water exchange, which indicated alterations in energy production and osmotic balance. However, these variations were subtle and it is unlikely that the water exchange practice had any lasting negative effects on larval physiology and performance. Multivariate pattern recognition tools (hierarchical clustering, principal component analysis and projection to latent squares discriminant analysis) were used to assess metabolite variations in larvae reared in low-density static and high-density flow through systems and to construct a culture condition classification model. Twelve metabolites contributed most towards the model, which indicated differences in energy, protein and lipid metabolism. The clear group separations were not represented by observable variations in morphological traits. This suggests that growth performance is metabolically buffered through an adaptive physiological mechanism to provide similar developmental characteristics under these conditions.
Research Interests:
Laboratory Safety Rules Observations and study of structure of microbes Microbial physiology: growth and metabolism Bacterial genetics and molecular biology Environment microbilogy Medical microbiology & immunology Control of... more
Laboratory Safety Rules
Observations and study of structure of microbes
Microbial physiology: growth and metabolism
Bacterial genetics and molecular biology
Environment microbilogy
Medical microbiology & immunology
Control of microbial activities
Reagents
Stains
Media
Buffers and Solutions
Observations and study of structure of microbes
Microbial physiology: growth and metabolism
Bacterial genetics and molecular biology
Environment microbilogy
Medical microbiology & immunology
Control of microbial activities
Reagents
Stains
Media
Buffers and Solutions
Research Interests: Evolutionary Biology, Marine Biology, Microbiology, Microeconomics, Medical Anthropology, and 10 moreMedia and Cultural Studies, Environmental microbiology, Conservation Biology, Molecular Biology, Medical Education, Biotechnology, Laboratory Medicine, Biology, Food Microbiology, and Acid Fast Staining
O presente livro – O Mar no Futuro de Portugal: Ciência e Visão Estratégica – é um dos resultados do projecto de investigação “A Extensão da Plataforma Continental Portuguesa: Implicações Estratégicas para a Tomada de Decisão”,... more
O presente livro – O Mar no Futuro de Portugal: Ciência e Visão Estratégica – é um
dos resultados do projecto de investigação “A Extensão da Plataforma Continental
Portuguesa: Implicações Estratégicas para a Tomada de Decisão”, realizado no quadro do
Centro de Administração e Políticas Públicas do Instituto Superior de Ciências Sociais e
Políticas da Universidade de Lisboa, em parceria com a Marinha Portuguesa e a Esri-
Portugal, Sistemas de Informação Geográfica, S.A., financiado pela Fundação para a Ciência
e Tecnologia.
O Mar configurou Portugal. Na nossa História manteve presença constante como factor
de desenvolvimento nacional, como via de acesso a novas terras, novas gentes, novos produtos, novos negócios. Há quarenta anos, o 25 de Abril causou uma mudança estrutural na
posição geopolítica de Portugal e consequentemente no nosso conceito estratégico nacional.
Este conceito, desestruturado e indefinido durante cerca de uma geração, tem vindo a reconfigurar-se desde os anos 90 do século passado no sentido de uma reorientação nacional para o Mar, tendo a Expo 98 sido um marco desse movimento.
Hoje há ainda muito mais discurso que acção, mais palavras que realizações. Mas
estamos a ser convocados, desafiados para uma resposta digna da nossa História de nove
séculos e do nosso extraordinário feito dos Descobrimentos.
O processo de extensão da plataforma continental portuguesa, submetido formalmente
em 11 de Maio de 2009 à Comissão de Limites da Plataforma Continental das Nações
Unidas, veio de certo modo agitar a consciência marítima dos portugueses, e a Universidade
não deixou de ser alvo dessa agitação na interacção quotidiana que congrega professores e
estudantes preocupados com o presente e futuro de Portugal.
O Mar no Futuro de Portugal: Ciência e Visão Estratégica é pois um trabalho multidisciplinar
em que se cruzam história, economia, geografia, ecologia, biologia, gestão, relações internacionais, intelligence, prospectiva, sistemas de informação geográfica, cibersegurança, estudos estratégicos e robótica subaquática, numa composição de tempo tríbio: o
futuro de Portugal vislumbrado e projectado no presente em função do passado e da conjuntura.
dos resultados do projecto de investigação “A Extensão da Plataforma Continental
Portuguesa: Implicações Estratégicas para a Tomada de Decisão”, realizado no quadro do
Centro de Administração e Políticas Públicas do Instituto Superior de Ciências Sociais e
Políticas da Universidade de Lisboa, em parceria com a Marinha Portuguesa e a Esri-
Portugal, Sistemas de Informação Geográfica, S.A., financiado pela Fundação para a Ciência
e Tecnologia.
O Mar configurou Portugal. Na nossa História manteve presença constante como factor
de desenvolvimento nacional, como via de acesso a novas terras, novas gentes, novos produtos, novos negócios. Há quarenta anos, o 25 de Abril causou uma mudança estrutural na
posição geopolítica de Portugal e consequentemente no nosso conceito estratégico nacional.
Este conceito, desestruturado e indefinido durante cerca de uma geração, tem vindo a reconfigurar-se desde os anos 90 do século passado no sentido de uma reorientação nacional para o Mar, tendo a Expo 98 sido um marco desse movimento.
Hoje há ainda muito mais discurso que acção, mais palavras que realizações. Mas
estamos a ser convocados, desafiados para uma resposta digna da nossa História de nove
séculos e do nosso extraordinário feito dos Descobrimentos.
O processo de extensão da plataforma continental portuguesa, submetido formalmente
em 11 de Maio de 2009 à Comissão de Limites da Plataforma Continental das Nações
Unidas, veio de certo modo agitar a consciência marítima dos portugueses, e a Universidade
não deixou de ser alvo dessa agitação na interacção quotidiana que congrega professores e
estudantes preocupados com o presente e futuro de Portugal.
O Mar no Futuro de Portugal: Ciência e Visão Estratégica é pois um trabalho multidisciplinar
em que se cruzam história, economia, geografia, ecologia, biologia, gestão, relações internacionais, intelligence, prospectiva, sistemas de informação geográfica, cibersegurança, estudos estratégicos e robótica subaquática, numa composição de tempo tríbio: o
futuro de Portugal vislumbrado e projectado no presente em função do passado e da conjuntura.