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Registros recuperados: 68
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A bibliographic overview of marine research at Universitas Hasanuddin (1973-1992) Naturalis
Hoeksema, B.W.; Moka, W..
A list of research papers, essays and abstracts on marine sciences is given, which were published by Hasanuddin University in the years 1973-1992. The purpose of this bibliography is to increase the accessibility of this information to students and scientists interested in marine sciences at UNHAS.
Tipo: Article / Letter to the editor Palavras-chave: Marine sciences; Universitas Hasanuddin; Bibliography; 42.94.
Ano: 1994 URL: http://www.repository.naturalis.nl/record/268554
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A mesophotic record of the gall crab Opecarcinus hypostegus from a Curaçaoan reef Naturalis
Meij, S.E.T. van der; Tienderen, K.M. van; Hoeksema, B.W..
Tipo: Article / Letter to the editor Palavras-chave: Gall crab; Opecarcinus hypostegus; Curaçaoan reef; 42.74.
Ano: 2015 URL: http://www.repository.naturalis.nl/record/533930
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A molecularly based phylogeny reconstruction of mushroom corals (Scleractinia: Fungiidae) with taxonomic consequences and evolutionary implications for life history traits Naturalis
Gittenberger, A.; Reijnen, B.T.; Hoeksema, B.W..
The phylogenetic relationships of the Fungiidae, a family of predominantly free-living, zooxanthellate, reef corals, were studied by sequencing a part of the mitochondrial Cytochrome Oxidase I (COI) and the complete ribosomal Internal Transcribed Spacers (ITS) I & II of specimens from various locations in the Indo- West Pacific. Some sequences were retrieved by using fungiidspecific primers on DNA-extracts from parasitic gastropods living with these corals. The analyses were performed both including and excluding intraspecific variation to investigate the potential effect of saturation. Even though the present molecular phylogeny reconstructions largely reflect those based on morphological characters, there are some distinct differences. Three major...
Tipo: Article / Letter to the editor Palavras-chave: COI; Evolutionary history; ITS 1 & 2; Maximum coral size; Polystomatism; Reproduction strategy; 42.72.
Ano: 2011 URL: http://www.repository.naturalis.nl/record/376596
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Berau: een ruim gevarieerd kustgebied in Oost-Kalimantan Naturalis
Hoeksema, B.W..
In eerdere afleveringen van de serie 'Met Naturalis in zee' is verslag gedaan over een expeditie naar Bali, die in 2001 door Naturalis werd gehouden. In oktober 2003 ging het zeeteam van Naturalis naar Oost-Kalimantan voor nieuwe verkenningen. Deze expeditie maakte deel uit van een groot Indonesisch-Nederlands programma, waarin onderzoekers van diverse instituten participeerden. Dit artikel is het eerste in een reeks over allerlei aspecten van het onderwaterleven van het Berau gebied. Een gebied dat niet alleen interessant is voor onderzoek, maar ook geschikt voor een avontuurlijke vakantiereis.
Tipo: Article / Letter to the editor Palavras-chave: Koraalrifonderzoek; Indo-Pacifisch gebied; Berau; Oost-Kalimantan; 42.65.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/270184
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Brandgevaar onder water Naturalis
Hoeksema, B.W..
De vorige aflevering van 'Met Naturalis in zee' (Onderwatersport januari/februari 2004) ging over fel gekleurde hydroied-koralen. In dit verhaal wordt de aandacht gevestigd op minder kleurrijke varianten, die als bijzonderheid hebben dat ze gemeen kunnen steken. Vandaar de Nederlandse naam brandkoraal.
Tipo: Article / Letter to the editor Palavras-chave: Koraalrifonderzoek; Indo-Pacifisch gebied; Millepora; Brandkoraal; 42.65; 42.72.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/270194
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Cantellius cardenae spec. nov. (Cirripedia: Pyrgomatinae) from Acropora (Isopora) brueggemanni (Brook, 1893) (Anthozoa: Acroporidae), a case of host specificity in a generalist genus Naturalis
Achituv, Y.; Hoeksema, B.W..
A new species of coral inhabiting barnacle Cantellius cardenae spec. nov. (Crustacea, Cirripedia: Pyrgomatinae) is described. This barnacle was found on the staghorn coral Acropora (Isopora) brueggemanni (Scleractinia: Acroporidae). It is characterized by having transversally elongated scuta and narrow terga with a spur length more than half of the total tergal length. This species belongs to the secundus group of Cantellius, which includes barnacles with transversally elongated scuta, and which are limited to the Acroporidae. The distribution of C. cardenae supports the hypothesis that structurally specialized pyrgomatines occupy a more limited variety of hosts than do morphologicaly generalized ones.
Tipo: Article / Letter to the editor Palavras-chave: Barnacle; Corals; Association; Cirripedia; Pyrgomatidae; Scleractinia; Acroporidae; 42.79.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/216132
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Cantharellus noumeae (gen. nov., spec. nov.), a new scleractinian coral (Fungiidae) from new Caledonia Naturalis
Hoeksema, B.W.; Borel Best, M..
A new monospecific genus in the coral family Fungiidae (Scleractinia) is described. Its affinities with two other genera are discussed.
Tipo: Article / Letter to the editor Palavras-chave: Scleractinia; Fungiidae; New genus; New species; New Caledonia; 42.72.
Ano: 1984 URL: http://www.repository.naturalis.nl/record/318550
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Control of bleaching in mushroom coral populations (Scleractinia: Fungiidae) in the Java Sea: stress tolerance and interference by life history strategy Naturalis
Hoeksema, B.W..
Bleaching was studied in populations of phylogenetically closely related species (n = 21) of mushroom corals (Scleractinia: Fungiidae) around Pari Island (Java Sea) during a period of excessive seawater warming in 1983. The interspecific variation in the proportions of affected individuals was significant. Spatial variation in the degree of bleaching anlong fungiid assemblages depended much on relative species abundances. Mushroom corals In relatively stagnant water of lagoons and on the inner reef flat showed little bleaching. Many of the outer reef mushroom corals at ≤ 9 m depth were affected, but only a few at greater depths (≥15 m). In most affected fungiids, the bleached part was pale (associated with pigment loss) instead of white (assumedly caused...
Tipo: Article / Letter to the editor Palavras-chave: Mushroom corals; Scleractinia; Fungiidae; Bleaching; Java Sea; Pari Island; 42.79.
Ano: 1991 URL: http://www.repository.naturalis.nl/record/227741
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Crossing marine lines at Ternate: capacity building of junior scientists in Indonesia for marine biodiversity assessments : preliminary results of the Ternate Expedition (2009) Naturalis
Hoeksema, B.W.; Meij, S.E.T. van der.
Tipo: Report Palavras-chave: Ternate Expedition; Preliminary results; 42.94.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/361161
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Cryptic marine biota of the Raja Ampat island group : Preliminary results of the Raja Ampat Expedition (2007), Ekspedisi Widya Nusantara (E-Win) of the Indonesian Institute of Sciences (LIPI) Naturalis
Hoeksema, B.W.; Meij, S.E.T. van der.
The Raja Ampat expedition in 2007 was organized by the National Museum of Natural History Naturalis in Leiden in cooperation with the Research Centre for Oceanography (RCO-LIPI, Jakarta) as part of Ekspedisi Widya Nusantara (E-Win expedition) of the Indonesian Institute of Sciences (LIPI). The research team consisted of scientists from Indonesia, the Netherlands, Palau and the United States. The Raja Ampat islands are located northwest of Bird’s Head' peninsula in Papua, Indonesia. This area has recently gained much media attention due to its high marine biodiversity and the recent discovery of several new species of corals and fish. The expedition was based at Kri Eco Resort of Papua Diving, on Kri Island. The expedition aimed to study cryptic biota,...
Tipo: Report Palavras-chave: Cryptic marine biota; Raja Ampat; Naturalis expedition; 42.65.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/293595
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Decline of the Jakarta Bay molluscan fauna linked to human impact Naturalis
Meij, S.E.T. van der; Moolenbeek, R.G.; Hoeksema, B.W..
In 1937/38 representative mollusc collections were made in Jakarta Bay (West Java, Indonesia). New data from here and the adjacent offshore Thousand Islands archipelago (Kepulauan Seribu) became available in 2005. Although collecting efforts and sampling methods differed, a comparison of the molluscan fauna of Jakarta Bay between 1937/38 and 2005 reveals a distinct deterioration. From 1937 to 2005, Jakarta Bay received increasing amounts of sewage from the greater Jakarta area, as well as increased sediment input from the deforested West Java hinterland. Predatory gastropods and numerous mollusc species associated with carbonate (reef) substrate have vanished from Jakarta Bay, among which many edible species.
Tipo: Article / Letter to the editor Palavras-chave: Java; Kepulauan Seribu; Reef degradation; Anthropogenic influence; Scientific collections; Mollusca.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/409034
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Distichopora vervoorti, a new shallow-water stylasterid coral (Cnidaria: Hydrozoa: Stylasteridae) from Bali, Indonesia Naturalis
Cairns, S.D.; Hoeksema, B.W..
A new species of stylasterid coral, Distichopora vervoorti, is described from shallow water off Bali, Indonesia. Although similar to D. irregularis in having meandering pore rows, it differs from that species in colony and branch shape, coenosteal colour, and expression of the ampullae.
Tipo: Article / Letter to the editor Palavras-chave: Stylasteridae; Distichopora; Bali; Indonesia; New species.; 42.72.
Ano: 1998 URL: http://www.repository.naturalis.nl/record/317572
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Evaluation of the ecological function of amphitoxin in the reef-dwelling sponge Callyspongia (Euplacella) biru (Haplosclerida: Callyspongiidae) at southwest Sulawesi, Indonesia Naturalis
Voogd, N.J. de; Haftka, J.J.H.; Hoeksema, B.W..
The ecological function of the secondary metabolite amphitoxin produced by Callyspongia (Euplacella) biru is evaluated by a forced confrontation with the free-living scleractinian coral Fungia fungites at different exposure times. Our major goal was to determine whether such a forced confrontation with a spatial com­petitor would cause a significant change in the concentration of amphitoxin in the sponge tissue, indicating a regulatory mechanism of amphitoxin production. Firstly, the concentrations of amphitoxin of sponge fragments submitted to forced confrontation with a mushroom coral did not differ between the exposure times. Secondly, all sponge fragments, including the controls had a consistently lower amphitoxin concentration during the course of the...
Tipo: Article / Letter to the editor Palavras-chave: Amphitoxin; Callyspongia (Euplacella) biru; Fungia fungites; Indonesia; Porifera; Spatial interaction; 42.72.
Ano: 2005 URL: http://www.repository.naturalis.nl/record/214340
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Evolutionary trends in onshore-offshore distribution patterns of mushroom coral species (Scleractinia: Fungiidae) Naturalis
Hoeksema, B.W..
A phylogenetically based comparative analysis of onshore-offshore distribution patterns of mushroom coral species (Scleractinia: Fungiidae) was made to reconstruct an evolutionary scenario for differentiation in fungiid shelf habitats. This phyloecological study integrates data on fungiid distribution patterns along environmental gradients on the Spermonde Shelf, SW Sulawesi, with a recently published phylogeny reconstruction of the Fungiidae. A mushroom coral fauna of 34 species was used to compare their distributions by use of 50-m2 belt quadrats in transects (1) from the mainland to the shelf edge, (2) around reefs with regard to predominant wind directions, and (3) over bathymetrical reef zones. Species association ordinations were made for each of the...
Tipo: Article / Letter to the editor Palavras-chave: Competitive exclusion; Ecophylogenetics; Environmental gradients; Habitat partitioning; Niche differentiation; Phylogenetic ecology; 42.72.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/433355
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First Indonesian record of Fungiacava eilatensis Goreau et al., 1968 (Bivalvia: Mytilidae), endosymbiont of Fungia spp. (Scleractinia: Fungiidae) Naturalis
Hoeksema, B.W.; Achituv, Y..
The mytilid bivalve Fungiacava eilatensis Goreau, Goreau, Neumann & Yonge, 1968, previously mistakenly referred to as F. eilatensis Soot-Ryen, 1969, is reported for the first time from Indonesia. It lives as an obligate endosymbiont of mushroom corals, particulary Fungia spp., reef-dwelling corals restricted to the tropical Indo-Pacific. Notes are given on its association with different host species, its habitat, its biogeography, and its possible competition with endosymbiotic gastropods belonging to the genus Leptoconchus (Coralliophilidae).
Tipo: Article / Letter to the editor Palavras-chave: Bivalvia; Mytilidae; Fungiacava; Lithophaga; Gastropoda; Prosobranchia; Coralliophilidae; Leptoconchus; Endosymbiosis; Host species; Anthozoa; Scleractinia; Fungiidae; Fungia; Ecology; Biogeography; Indonesia; 42.72; 72.73.
Ano: 1993 URL: http://www.repository.naturalis.nl/record/268735
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Fungia (Verrillofungia) Spinifer spec. nov., a new Scleractinian Coral (Fungiidae) from the Indo-Malayan region Naturalis
Claereboudt, M.; Hoeksema, B.W..
Summary: A new Fungia species from the Bismarck Sea is described and its taxonomic position is discussed. INTRODUCTION The Fungiidae have an important place among Indo-Pacific scleractinian reef corals. Many nominal species have been described in this family, but only about 40 of them proved to be valid (Hoeksema, in prep.) which is roughly 10% of the total number of living Indo-Pacific reef coral species. Only a few of these species do not occur in the central part of the Indo-Pacific, or more specifically the Indo-Malayan Region. The new species has been collected by both authors from different locations in Papua New Guinea and Indonesia. In the most recent generic revision of the Fungiidae, the genera Fungia Lamarck, 1801 and Cycloseris Milne Edwards...
Tipo: Article / Letter to the editor Palavras-chave: Fungia; New species; Bismarck Sea; Indo-Malayan Region. A new Fungia species from the Bismarck Sea is described and its taxonomic position is discussed; 42.72.
Ano: 1987 URL: http://www.repository.naturalis.nl/record/319117
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Genetic and morphological variation in corallivorous snails (Coralliophila spp.) living on different host corals at Curaçao, southern Caribbean Naturalis
Potkamp, G.; Vermeij, M.J.A.; Hoeksema, B.W..
Snails of the genus Coralliophila (Muricidae: Coralliophilinae) are common corallivores in the Caribbean, feeding on a wide range of host species. In the present study, the morphological and genetic variation in C. galea and C. caribaea were studied in relation to their association with host coral species at Curaçao. Differences in shell shape among snails living on different hosts were quantified using geometric morphometric and phylogenetic relationships were studied using two mitochondrial markers (12S and COI). Based on these analyses, a new species, C. curacaoensis sp. nov., was found in association with the scleractinian coral Madracis auretenra. Both C. galea and C. caribaea showed host-specific differences in shell shape, size, and shell allometry...
Tipo: Article / Letter to the editor Palavras-chave: Genetic differentiation; Phylogenetics; 12S; COI; Corallivory; Morphology; Geometric morphometrics; Host race.
Ano: 2017 URL: http://www.repository.naturalis.nl/record/630190
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Habitat preferences of coral-associated wentletrap snails (Gastropoda: Epitoniidae) Naturalis
Gittenberger, A.; Hoeksema, B.W..
Examination of about 60,000 scleractinian corals of the families Dendrophylliidae, Euphylliidae and Fungiidae for the presence of associated wentletrap snails (Gastropoda: Epitoniidae) revealed various ectoparasitic life history strategies. Twenty Indo-Pacific wentletrap species were found, which were either host-specific or generalist. Most species were associated with mushroom corals, especially free-living species belonging to the Fungiidae. Snails showed different preferences with regard to their position relative to mushroom corals, the host’s size and its substrate. No preferences for depth were found. Infestation rates of mushroom corals in multi-species assemblages were negatively correlated with coral densities, which indicates that epitoniid...
Tipo: Article / Letter to the editor Palavras-chave: Coral-mollusc associations; Fungiidae; Indo-Pacific; Parasitic snails; Scleractinia; 42.73.
Ano: 2013 URL: http://www.repository.naturalis.nl/record/436822
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Het erwtekrabbetje, Pinnotheres pisum (L.), als commensaal van de paardemossel, Modiolus modiolus (L.) Naturalis
Hoeksema, B.W..
Tipo: Article / Letter to the editor Palavras-chave: Pinnotheres pisum; Modiolus modiolus; Commensaal; 42.73; 42.74.
Ano: 1981 URL: http://www.repository.naturalis.nl/record/269034
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Het mysterie van de hellevuur zeeanemoon Naturalis
Hoeksema, B.W..
In 'Met Naturalis in zee' van mei 2004 komt brandgevaar onderwater aan de orde. Aanleiding is een onderzoek aan brandkoralen, in het Engels 'fire corals' genoemd. Duikers en snorkelaars leren deze Millepora koralen snel herkennen na onbedoeld contact met het koraaloppervlak. Uit kleine poriën in dat gladde opppervlak steken haarfijne tentakels die netelkapsels bevatten. Daar brandt iemand zich meestal geen tweede keer aan. Dat kan heel anders bij dieren die zo goed gecamoufleerd zijn en zo venijnig pijn doen, dat het slachtoffer zich vaak niet realiseert wat hem is overkomen en ook niet direct ziet wie de boosdoener is.
Tipo: Article / Letter to the editor Palavras-chave: Millepora; Brandkoraal; 42.72.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/270359
Registros recuperados: 68
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