GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Himmi, S K  (10)
  • 1
    Online Resource
    Online Resource
    Examination of fecal pellet physical characteristics of an invasive drywood termite, Cryptotermes dudleyi (Isoptera: Kalotermitidae): A potential approach for species marker and non-destructive monitoring method
    IOP Publishing ; 2020
    In:  IOP Conference Series: Materials Science and Engineering Vol. 935, No. 1 ( 2020-09-01), p. 012050-
    Details
    In: IOP Conference Series: Materials Science and Engineering, IOP Publishing, Vol. 935, No. 1 ( 2020-09-01), p. 012050-
    Abstract: Cryptotermes, one of the major drywood termite genera in Indonesia, is a cryptic species that isolates their presence inside a wood piece. Due to its cryptic lifecycle hidden away inside wood, monitoring its presence and also identifying the corresponding species has been a difficult process. One of the Cryptotermes species, native to Java island, Indonesia, is Cryptotermes dudleyi. In this preliminary study, we used C. dudleyi as a species model to find out whether fecal pellet physical characteristics can be used as a stable species marker to assist in non-destructive monitoring surveillance. The characteristics used were maximum diameter, diagonal width of maximum diameter, and 2D surface area and area perimeter. The study used fecal pellets from orphaned and mature colonies and three different dietaries (grass, hardwood, and softwood) to check whether the characteristic value of fecal pellets is narrow over various influences. The results showed that each characteristic tends to have unique mean and also its unique value range which depends on their collection site condition. Due to unique means and value range, the species marker become not so accurate and not robust enough as consequences in accommodating these unique means and value range. On the other hand, employing completely new clustering based on like-like axiom on individual fecal pellets may results in robust species marker as long as adequate data comparison from other species fecal pellets to validate the species marker is available.
    Type of Medium: Online Resource
    ISSN: 1757-8981 , 1757-899X
    URL: Article
    DOI: 10.1088/1757-899X/935/1/012050
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 2506501-4
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Termite assemblage structure in Batam Island, Indonesia
    IOP Publishing ; 2019
    In:  IOP Conference Series: Earth and Environmental Science Vol. 361, No. 1 ( 2019-11-01), p. 012026-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 361, No. 1 ( 2019-11-01), p. 012026-
    Abstract: Termite’s biodiversity is known to be strongly affected by disturbance, particularly in an urban area. The present study evaluated termite biodiversity and distribution in Batam Botanical Garden, an urban conservation area in Batam Island. In the surveyed area, termites could play a major beneficial role through the promotion of essential ecological processes in ecosystems, such as soil modification and rehabilitation; as well as their well-established role as pests for vegetation. Therefore, biodiversity evaluation of termite is very important to identify economically and ecologically important species. Termite survey had been conducted by a 100 × 2 m belt-transect. Transect area was divided into 20 sections (5 × 2 m), in which each section was surveyed for 30 minutes by two trained people. In total, 106 specimens (15 termite genera) were collected from three sampling sites: Plantation, Mangrove forest, and Forest.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/361/1/012026
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 2434538-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Biological activity of local plant extracts from Toba Region as insecticide
    IOP Publishing ; 2019
    In:  IOP Conference Series: Earth and Environmental Science Vol. 374, No. 1 ( 2019-11-01), p. 012006-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 374, No. 1 ( 2019-11-01), p. 012006-
    Abstract: Toba, North Sumatera is famous not only for its tourism destination but also for biodiversity. The aim of this research is to explore the potency of the local plant from Toba as bioinsecticide. Six local plant samples, which consists of genus Compositae, Meliaceae, Staphyleaceae, and Actinidiaceae, were obtained from the Toba region,. The macerated extracts were tested their insecticidal activity against Coptotermes gestroi and Spodoptera litura. Bioassay results showed that leaves extract of Ingul ( Toona sinensis ) at a concentration of 10% (w/v) had the highest mortality effect against Coptotermes gestroi on the tenth day of observation. Whereas, leaves extracts of Pirdot (Saurauia bracteosa), Ingul ( Toona sinensis ), and Haurese ( Azadirachta indica ) at the concentration of 1% (w/v) showed the best insecticidal effect with 80% mortality percentage respectively against Spodoptera litura in 4 hours of observation.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/374/1/012006
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 2434538-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 4
    Online Resource
    Online Resource
    Functional structures of termite assemblage in changing habitats and ecosystems
    IOP Publishing ; 2020
    In:  IOP Conference Series: Earth and Environmental Science Vol. 591, No. 1 ( 2020-11-01), p. 012049-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 591, No. 1 ( 2020-11-01), p. 012049-
    Abstract: Termite species diversity and assemblage structures differ in ecosystems and habitats. Termite distribution is also highly influenced by temperature, humidity and altitude. Greater species richness and greater density have been reported in humid forests than in arid or semiarid environments. However, termites biodiversity is known to be strongly affected by anthropogenic alteration, wich affect their functional assemblage structure. The humus-feeders were as the most sensitively affected, while the wood-feeders were the most resilient group among others. Therefore, the functional structures of termite communities in changing habitats and ecosystems are important subject to discuss in order to capture more understanding on termite and ecosystem relationship.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/591/1/012049
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 2434538-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 5
    Online Resource
    Online Resource
    Larvicidal Activity of Bintaro (Cerbera odollam) against Culex quinquefasciatus
    IOP Publishing ; 2020
    In:  IOP Conference Series: Earth and Environmental Science Vol. 591, No. 1 ( 2020-11-01), p. 012010-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 591, No. 1 ( 2020-11-01), p. 012010-
    Abstract: Mosquitoes are known for their bites which caused discomfort and its role as vector for various dangerous diseases that has been the bane of humanity since antiquity. One of them is Culex quinquefasciatus which facilitates the spread of arbovirus and nematodes that caused debilitating impact for human life. To eliminate mosquito, the study for evaluating plant-based mosquito larvicidal extract of Cerbera odollam extract against C. quinquefasciatus was conducted. Twenty-five second instar of C. quinquefasciatus were subjected to the crude and fractionated extracts of C. odollam , and the larval mortality was observed at 24, and 48 h of exposure. The results showed that the crude extracts of leaves, rinds, and stem bark exhibited low larvicidal activities. Interestingly, crude extract of the seed kernel exhibited high larvicidal activity. We found that the fractionated extract derived from the seed kernel extract using ethyl acetate and n-hexane exhibited high larvicidal activities, suggesting that C. odollam extract could be promoted as a material for larval control.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/591/1/012010
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 2434538-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 6
    Online Resource
    Online Resource
    Directional response of the subterranean termite Coptotermes curvignathus toward volatilized Pinus merkusii extract
    IOP Publishing ; 2019
    In:  IOP Conference Series: Earth and Environmental Science Vol. 374, No. 1 ( 2019-11-01), p. 012017-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 374, No. 1 ( 2019-11-01), p. 012017-
    Abstract: Preliminary study on termite recognition for food source location was carried out by the subjection of volatile compounds emitted by Sumatran Pine ( Pinus merkusii Jungh. & de Vriese). Food source recognition by termite was evaluated using a set-up model on the inverted Y-tube apparatus. The apparatus consisted of a release chamber, in which five workers had been released; an intersection chamber, in which termite movement would be evaluated for clockwise and counter-clockwise movements; and a pair of food chamber. Between the intersection chamber and food chambers, a tunnel with 5 cm length was divided into five scale ranges, in which each range was related to a preference score. Various set-up models had been prepared from these concentrations: 0%; 0.5%; 1%; 2%; 4%; 8% of the macerated extract of Sumatran Pine sapwood in 8 mm paper dish. Each set-up consisted of a pair of concentrations: low & high concentration, which was located on different food chambers. The results suggested that termite showed directional preference to a low concentration, even in a set-up model of 0% & 0.5% ( F = 16.65, P = 0.002), which indicated that the extracts might have a repellent effect against termite. When the results were clustered based on termite’s movement, clockwise and counterclockwise, significant preference for low concentration was observed in two and one set-up models, respectively. Behavioural observation showed that in most of the set-up models, the first food chamber explored by a termite would generate more preference scores, regardless of the concentrations.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/374/1/012017
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 2434538-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 7
    Online Resource
    Online Resource
    Anti-termite activities of Indonesia’s essential oils against invasive drywood termite for wood product protection
    IOP Publishing ; 2021
    In:  IOP Conference Series: Earth and Environmental Science Vol. 918, No. 1 ( 2021-11-01), p. 012032-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 918, No. 1 ( 2021-11-01), p. 012032-
    Abstract: The Indo-Malayan drywood termite, Cryptotermes cynocephalus (Light) (Kalotermitidae), is considered one of the most invasive drywood termites in the Southeast Asian region. Once infesting a timber, the colony of a drywood termite is very difficult to be controlled. Thus, the best way to mitigate a new infestation of a drywood termite is by applying chemical protection on wood. In recent years, particular attention has been given by researchers to develop and use organic termiticides, such as essential oils extracted from plants as active ingredients. The objective of the present study is to evaluate the repellency performance of several economically important essential oils from Indonesia, such as Clove (Eugenia caryophyllata), Cubeb Pepper (Piper cubeba L), and Lemon Grass (Cymbopogon winterianus Jowitt ) against a drywood termite, C. cynocephalus . The test was performed by subjecting various concentrations of essential oil toward C. cynocephalus in the force-feeding test method. Sample weight-loss was evaluated after two weeks test. The results suggested that Clove oil has the highest repellence performance against C. cynocephalus , followed by Lemon Grass and Cubeb Pepper oils. The Termite mortality rate was also recorded to understand the toxicity performance of those essential oils.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/918/1/012032
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2434538-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 8
    Online Resource
    Online Resource
    Repellent activity of three essential oils against dengue and filarial vector mosquitoes
    IOP Publishing ; 2021
    In:  IOP Conference Series: Earth and Environmental Science Vol. 918, No. 1 ( 2021-11-01), p. 012001-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 918, No. 1 ( 2021-11-01), p. 012001-
    Abstract: Cymbopogon nardus , Syzygium aromaticum , and Citrus sinensis have been well known to possess insecticidal activity. Here, we investigated the repellent activity of individual of three essential oils ( C . nardus , S . aromaticum , C . sinensis ) and a combination of essential oils ( C . nardus + C . sinensis , C . nardus + S . aromaticum , and C. sinensis + S . aromaticum ) against a dengue vector, Aedes aegypti and a filarial vector, Culex quinquefasciatus . The essential oils (1 mg) were smeared evenly on the surface of the left arm (three volunteers) and then subjected to 25 females of A . aegypti and C . quinquefasciatus in the cage. The number of landed mosquitos was observed every hour for 7 hours to determine the protection index (PI). The result showed that individuals of three essential oils and a combination of essential oils generated 〉 90% of PI until 7 hours of application for both mosquitos species tested. Overall, the data demonstrated that individual of three essential oils, i.e., C . nardus , S . aromaticum , C . sinensis , and various combinations of essential oils ( C . nardus + C . sinensis ; C . nardus + S . aromaticum ; C. sinensis + S . aromaticum ) are promising as repellent agents against A . aegypti and C. quinquefasciatus .
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/918/1/012001
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2434538-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 9
    Online Resource
    Online Resource
    Distribution record of the invasive drywood termite Cryptotermes domesticus (Haviland) in Riau Province, Sumatra Island, Indonesia
    IOP Publishing ; 2021
    In:  IOP Conference Series: Earth and Environmental Science Vol. 918, No. 1 ( 2021-11-01), p. 012039-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 918, No. 1 ( 2021-11-01), p. 012039-
    Abstract: The domestic drywood termite, Cryptotermes domesticus (Haviland), has been referred to in past literature as a native species originating in the Southeast Asia region. The species come to prominence due to its destructive damage to a dried wood log by creating passages and nests inside the wood. Its economic importance makes the species one of the monitored species in inter-island transport as part of a biosecurity initiative by the Indonesian Government. In the present study, we collected drywood termites’ specimens from four locations in Riau Province, Sumatra Island, and conducted morphological identification. In the end, we verify the presence of C. domesticus in all four sites studied. This finding establishes the continued presence of the species in Sumatra, one of the areas reported as the native distribution of the species other than Java and Kalimantan following the Holmgren reports in 1913. We believe this report can be an addition to the current status of C. domesticus in Sumatra and also be an addition to the biosecurity initiative list of monitored species regarding the C. domesticus native range in Indonesia.
    Type of Medium: Online Resource
    ISSN: 1755-1307 , 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/918/1/012039
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2434538-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 10
    Online Resource
    Online Resource
    Screening of Some Plant Extracts from Toba Regions-North Sumatra for controlling Wood-Rotting fungi
    IOP Publishing ; 2020
    In:  IOP Conference Series: Earth and Environmental Science Vol. 572 ( 2020-10-08), p. 012021-
    Details
    In: IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 572 ( 2020-10-08), p. 012021-
    Type of Medium: Online Resource
    ISSN: 1755-1315
    URL: Article
    DOI: 10.1088/1755-1315/572/1/012021
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 2434538-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...