scholarly journals Changes in the composition of the land snail fauna of Mt. Ciampea, West Java, Indonesia

2020 ◽  
Vol 19 ◽  
pp. 00018
Author(s):  
Ayu Savitri Nurinsiyah ◽  
Bernhard Hausdorf
Keyword(s):  
Invasive Species ◽  
Species Composition ◽  
20Th Century ◽  
Dominant Species ◽  
Land Snail ◽  
Land Snails ◽  
Early 20Th Century ◽  
Snail Species ◽  
Previous Survey ◽  
West Java

Mt. Ciampea is a limestone outcrop surrounded by human settlements in West Java. To update the inventory of land snail species from Mt. Ciampea and to compare it with the previous records, we sampled land snails at eight plots (10m x10m) in January 2013 and May 2014. In total, 1702 specimens belonging to 16 families and 34 species were collected. Stomacosmethis jagori (Cyclophoridae) was the dominant species comprising 24% of the individuals. The number of species was similar to a previous survey, in which 38 species were recorded, but the species composition was different. Sixteen of the previously recorded species were not found in our survey, but we could record 13 species that were not known from Mt. Ciampea so far. Among them were two invasive species, Lissachatina fulica (Achatinidae) and Bradybaena similaris (Camaenidae) that colonized the area since the early 20th century. A more detailed survey will be necessary to ascertain whether and which previously recorded species are actually extinct on Mt. Ciampea.

scholarly journals Diversity of Land and Freshwater Snail (Mollusca: Gastropoda) of Laiwangi Wanggameti National Park, Sumba Island, Indonesia

2021 ◽  
Vol 6 (2) ◽  
pp. 162-173
Author(s):  
Nova Mujiono ◽  
Nur Rohmatin Isnaningsih
Keyword(s):  
Population Density ◽  
Species Composition ◽  
National Park ◽  
Dominant Species ◽  
New Records ◽  
Land Snail ◽  
Freshwater Snail ◽  
The Other ◽  
Snail Species ◽  
Number Of Species

A study on the malacofauna of Laiwangi Wanggameti National Park (LWNP) in Sumba Island has been conducted. This study aims were to reveal the diversity of malacofauna in Sumba and compare it with those in the Lesser Sunda Islands. Observations were made on 20 stations using plots (10 x 10 m) in Wanggameti and Laiwangi. Specimens were collected for two hours in each plot. Twenty families and 44 species have been identified. The overall number of species from Sumba increased from 126 to 143 species. The LWNP represents 31% diversity of malacofauna in Sumba Island. Seventeen species are considered as new records for the island. Five endemic land snail species are still observed inside the park. The diversity and population density tend to be higher in Laiwangi area with lower altitudes than in Wanggameti area with higher altitudes. Two dominant species are Asperitas bimaensis cochlostyloides and Tarebia granifera. Species composition in Sumba is more similar to Bali compared with the other six neighboring islands.

scholarly journals Environmental factors affecting the distribution of land snails in the Atlantic Rain Forest of Ilha Grande, Angra dos Reis, RJ, Brazil

2012 ◽  
Vol 72 (1) ◽  
pp. 79-86 ◽  
Author(s):  
GKM Nunes ◽  
SB Santos
Keyword(s):  
Environmental Factors ◽  
Species Composition ◽  
Rain Forest ◽  
Pearson Correlation ◽  
Land Snail ◽  
Land Snails ◽  
Environmental Data ◽  
Compositional Variation ◽  
Snail Species ◽  
Atlantic Rain Forest

The distribution and abundance of terrestrial molluscs are affected by environmental factors, but data are lacking for Brazilian land snails. The aim of this study was to understand the relationship between measured environmental factors and the land-snail species composition of two hillsides covered with Atlantic Rain Forest on Ilha Grande. On each hillside, five plots located at 100 m intervals between 100 to 500 m asl were chosen. Each plot was sampled by carrying out timed searches and collecting and sorting litter samples from ten quadrats of 25 × 75 cm. A range of environmental data was measured for each of the quadrats in a plot. A Cluster Analysis was carried out for the richness and abundance data. The environmental variables were analysed using a Pearson Correlation Matrix and Discriminant Analysis. Our results show that the two mountains are similar in species richness, but species composition and abundance are different, probably reflecting observed differences in environmental conditions. The environmental factors associated with compositional variation between the two mountains were: atmospheric temperature, soil temperature, litter depth, and relative air humidity. Distinct luminosity and canopy closure conditions were related to the composition of the land-snail community of one hillside.

scholarly journals Species composition, relative abundance, and distribution of land snail species in Mt. Lantoy Key Biodiversity Area, Cebu, Philippines

2020 ◽  
Vol 21 (11) ◽  
Author(s):  
RAAMAH ROSALES ◽  
EDGARDO LILLO ◽  
STEVE MICHAEL ALCAZAR ◽  
LEA COLITA ◽  
JOED CABALLERO ◽  
...  
Keyword(s):  
Species Composition ◽  
Relative Abundance ◽  
Land Snail ◽  
Land Snails ◽  
Permanent Plots ◽  
Snail Species ◽  
Widespread Species ◽  
Group Order ◽  
Abundance And Distribution ◽  
Number Of Individuals

Abstract. Rosales R, Lillo E, Alcazar SM, Colita L, Caballero J, Malaki AB. 2020. Species composition, relative abundance, and distribution of land snail species in Mt. Lantoy Key Biodiversity Area, Cebu, Philippines. Biodiversitas 21: 5438-5447. This study aimed to establish an inventory of land snails in Mt. Lantoy, Cebu Island, Philippines. A two-person team conducted sampling on eight permanent plots with an elevation range of 182 m-691 m. The study has listed a total of 872 individuals represented by 25 species belonging to 15 genera and nine families. Seven families belong to the air-breathing pulmonate group, Order Stylommatophora: Bradybaenidae, Camaenidae, Trochomorphidae, Achatinidae, Ariophantidae, Helicarionidae, Helicinidae. Two families were under the prosobranch group, Order Caenogastopoda: Cyclophoridae, and Pupinidae. The Cyclophoridae was the richest family with five species, followed by Bradybaenidae, Camaenidae, Helicinidae, having four species. The Trochomorphidae and Helicarionidae have three species. The Pupinidae has two species, while the Achatinidae and Ariophantidae has one species each. There were three (3) endemic and ten (10) new island record species collected and identified with four (4) species that were classified as rare. Rysotta otaheitana Ferussac 1821 was the most abundant, representing 25.22% of the total number of individuals. The Leptoma nitidum ancilis Bartsch 1918 has the widest geographical distribution with a constancy rate of 100%. Widespread species appear to be more abundant, while other species were geographically restricted in few study areas.

scholarly journals The direct cost of traumatic secretion transfer in hermaphroditic land snails: individuals stabbed with a love dart decrease lifetime fecundity

2015 ◽  
Vol 282 (1804) ◽  
pp. 20143063 ◽  
Author(s):  
Kazuki Kimura ◽  
Satoshi Chiba
Keyword(s):  
Direct Cost ◽  
Sexual Conflict ◽  
Mating Behaviour ◽  
Land Snail ◽  
Fertilization Success ◽  
Land Snails ◽  
Snail Species ◽  
Arms Races ◽  
Lifetime Fecundity ◽  
Sperm Donors

Several taxa of simultaneously hermaphroditic land snails exhibit a conspicuous mating behaviour, the so-called shooting of love darts. During mating, such land snail species transfer a specific secretion by stabbing a mating partner's body with the love dart. It has been shown that sperm donors benefit from this traumatic secretion transfer, because the secretions manipulate the physiology of a sperm recipient and increase the donors' fertilization success. However, it is unclear whether reception of dart shooting is costly to the recipients. Therefore, the effect of sexual conflict and antagonistic arms races on the evolution of traumatic secretion transfer in land snails is still controversial. To examine this effect, we compared lifetime fecundity and longevity between the individuals that received and did not receive dart shooting from mating partners in Bradybaena pellucida . Our experiments showed that the dart-receiving snails suffered reduction in lifetime fecundity and longevity. These results suggest that the costly mating behaviour, dart shooting, generates conflict between sperm donors and recipients and that sexually antagonistic arms races have contributed to the diversification of the morphological and behavioural traits relevant to dart shooting. Our findings also support theories suggesting a violent escalation of sexual conflict in hermaphroditic animals.

The land snail fauna of a South American rainforest biodiversity hotspot: the Panguana conservation area in the Peruvian Amazon

2019 ◽  
Vol 85 (3) ◽  
pp. 311-318
Author(s):  
Birte Wendebourg ◽  
Bernhard Hausdorf
Keyword(s):  
Distinct Group ◽  
Land Snail ◽  
Global Scale ◽  
Land Snails ◽  
Snail Species ◽  
South American ◽  
Conservation Area ◽  
Additional Species ◽  
Synanthropic Species ◽  
Very High

Abstract We investigated the land snail fauna of the Panguana conservation area on the western rim of the Amazonas basin in Peru. A total of 2,322 individuals assigned to 65 land snail species were collected in 32 plots. Ten additional species were found in collections made on previous expeditions to Panguana. On the basis of available data, Panguana is the most species rich locality for land snails in South America. The species density of 75 land snail species in c. 2 km2 of rather homogeneous rainforest is also high on a global scale. The land snail fauna of Panguana is characterized by a very high proportion of species belonging to the carnivorous family Scolodontidae, many of which are likely to be new to science. The fauna includes seven species that are new records for Peru, and the species Hirtudiscus sp., Xenodiscula venezuelensis, Geostilbia aperta, Guppya gundlachii and Thysanophora plagioptycha represent genera not previously recorded from the country. The synanthropic species Allopeas gracile, Opeas hannense, Subulina octona, Geostilbia aperta and Gastrocopta servilis form an ecologically distinct group that occurs mainly in sites strongly modified by humans. The presence of these species on the margin of the Amazon rainforest is evidence of the ongoing homogenization of the global fauna.

Production of Natural Bioceramic from Land Snails

2011 ◽  
Vol 493-494 ◽  
pp. 287-292 ◽  
Author(s):  
D. Kel ◽  
Hasan Gökçe ◽  
D. Bilgiç ◽  
D. Ağaoğulları ◽  
I. Duman ◽  
...  
Keyword(s):  
Helix Pomatia ◽  
Land Snail ◽  
Land Snails ◽  
Snail Species ◽  
Growing Up ◽  
Limited Information ◽  
X Ray Diffraction ◽  
Ultrasonic Equipment ◽  
Liquid Part ◽  
Commercially Important

There are thousands of land snail species, ranging in size from 1 mm to the Giant African Snail growing up to a foot long. Two species, known as escargot, helix aspersa and helix pomatia, are commercially important. Helix pomatia is abundant in Turkey. Those snails are exported usually without shells. Shells are damped to trash sites or used as substitute food for animals. The shell is rich in calcium carbonate and some other minor minerals. Thus, snails’ shells can be used as a source for bioceramic production. So far, in the literature there are lot of papers about converting calcite and aragonite structures to hydroxyapatite (HA), like corals, sea shells, sea urchin and other sea creatures. However, there is very limited information about converting land snail shells to HA and other bioceramic phases. The aim of this work was to produce various phases of bioceramic materials from land snails’ shells which are left as a residue waste after their export procedures. Empty local land snails’ shells (helix pomatia) were collected in Istanbul. They were washed, dried, crushed and ball milled until a powder of 100 µm particles size was obtained. Raw powders were stirred at 80°C for 15 min on a hotplate. A second part of the raw powder was stirred with an ultrasonic stirrer at 80°C for 15 min in an ultrasonic equipment. Equivalent amount of H3PO4 was added drop by drop into the solution. The reaction lasted for 8h. Then, to evaporate the liquid part, the mixtures were put into an incubator at 100°C for 24 h and the resultant dried sediments were collected. The produced powders were analyzed with X-ray diffraction, IR and scanning electron microscope (SEM). The experimental results confirmed the formation of various Ca-phosphates, specifically monetite, fluorapatite and some other minor calcium phosphate phases. Bioceramic production from land snail is a reliable and economic way comparing to other tedious methods of producing synthetic HA and other various bioceramics phases.

scholarly journals Contrasting responses of two xerophilous land snails to fire and natural reforestation

2012 ◽  
Vol 81 (3) ◽  
pp. 167-S1 ◽  
Author(s):  
Xavier Santos ◽  
Vicenç Bros ◽  
Elisabet Ros
Keyword(s):  
Key Management ◽  
Spatial Scales ◽  
Land Snail ◽  
Western Mediterranean ◽  
Land Snails ◽  
Holm Oak ◽  
Aerial Photographs ◽  
Snail Species ◽  
Limited Mobility ◽  
Faunal Distribution

Land-use change is considered the main disturbance in landscape structure and composition, directly affecting faunal distribution and species richness worldwide. Wildfires and natural reforestation alter habitat structure in terms of vegetation cover and also in soil composition and moisture; these processes hence trigger habitat transformations that act as opposing forces at small spatial scales. We have explored the contrasting effects of wildfires and natural reforestation on two land-snail species of the genus Xerocrassa, which are endemic in the western Mediterranean. Snails were sampled in pine and Holm oak forest, stony bare slopes and burnt sites. Both species followed a similar pattern: they were present in more than 75% of the stony bare slope sites and around 50% of the burnt sites, but were almost absent in Holm oak forests. The comparison of aerial photographs from 1956 and 2003 showed that stony bare slopes were significantly larger in 1956, this indicating that the natural reforestation might close these habitats, and consequently threaten the viability of the Xerocrassa populations. Given their limited mobility, the presence of Xerocrassa at burnt sites suggests that these species live in small and cryptic populations within the forest, surviving fire and expanding their distribution due to the appearance of adequate habitats. Our study shows that natural reforestation and fire play opposing roles in conserving Xerocrassa populations. The preservation of stony bare slopes as well as other open areas is a key management guideline to maintain landscape mosaics and help future conservation of species of open habitats such as these vulnerable endemic gastropods.

DIVERSITY AND ECOLOGY OF LAND SNAILS IN GUNUNG HALIMUN SALAK NATIONAL PARK (GHSNP) IN JAVA, INDONESIA

Zoo Indonesia ◽  
2020 ◽  
Vol 28 (1) ◽  
Author(s):  
Ayu Savitri Nurinsiyah ◽  
Ita Faizah ◽  
Yogi Prasetio ◽  
Tedi Setiadi ◽  
Ristiyanti Marsetiowati Marwoto ◽  
...  
Keyword(s):  
Species Richness ◽  
Soil Ph ◽  
National Park ◽  
New Records ◽  
Land Snail ◽  
Montane Forest ◽  
Land Snails ◽  
Tropical Montane Forest ◽  
Snail Species ◽  
June July

The land snail fauna of the largest tropical montane forest in Java, the Gunung Halimun Salak National Park (GHSNP), was surveyed during the dry season (June-July) in 2015, concentrating on four park’s resorts, i.e. Cikaniki, Mt. Botol, Cisarua (Halimun area) and Cidahu (Salak area). In total, 399 specimens representing 43 species were collected. Prior to the surveys, 48 land snail species were known from the GHSNP. Fifteen new records for the GHSNP were discovered so 63 species are now known to inhabit the Park. This number represent 25% of the total land snail fauna of Java. 21 of the species found in GHSNP are endemic to Java. The species richness of the plots in GHSNP was correlated with soil pH and the composition of the land snail communities was correlated with elevation, annual mean temperature, and amount of deadwood.

scholarly journals Plants critical for Hawaiian land snail conservation: arboreal snail plant preferences in Puʻu Kukui Watershed, Maui

Oryx ◽  
2021 ◽  
pp. 1-6
Author(s):  
Wallace M. Meyer ◽  
Lily M. Evans ◽  
Connor J.K. Kalahiki ◽  
John Slapcinsky ◽  
Tricia C. Goulding ◽  
...  
Keyword(s):  
Land Snail ◽  
Land Snails ◽  
Conservation Strategies ◽  
Snail Species ◽  
Native Plant ◽  
Plant Host ◽  
Critical Habitat ◽  
Host Preferences ◽  
Island Endemic ◽  
Understorey Plants

Abstract The Hawaiian archipelago was formerly home to one of the most species-rich land snail faunas (> 752 species), with levels of endemism > 99%. Many native Hawaiian land snail species are now extinct, and the remaining fauna is vulnerable. Unfortunately, lack of information on critical habitat requirements for Hawaiian land snails limits the development of effective conservation strategies. The purpose of this study was to examine the plant host preferences of native arboreal land snails in Puʻu Kukui Watershed, West Maui, Hawaiʻi, and compare these patterns to those from similar studies on the islands of Oʻahu and Hawaiʻi. Concordant with studies on other islands, we found that four species from three diverse families of snails in Puʻu Kukui Watershed had preferences for a few species of understorey plants. These were not the most abundant canopy or mid canopy species, indicating that forests without key understorey plants may not support the few remaining lineages of native snails. Preference for Broussaisia arguta among various island endemic snails across all studies indicates that this species is important for restoration to improve snail habitat. As studies examining host plant preferences are often incongruent with studies examining snail feeding, we suggest that we are in the infancy of defining what constitutes critical habitat for most Hawaiian arboreal snails. However, our results indicate that preserving diverse native plant assemblages, particularly understorey plant species, which facilitate key interactions, is critical to the goal of conserving the remaining threatened snail fauna.

scholarly journals Actual phytosanitary state of park cenoses of the Southern Coast of the Crimea

2019 ◽  
pp. 93-101
Author(s):  
N. N. Trikoz
Keyword(s):  
Invasive Species ◽  
Species Composition ◽  
Dominant Species ◽  
Abiotic Factors ◽  
Morphological Characteristics ◽  
Southern Coast ◽  
Biological Survey ◽  
The Crimea ◽  
Definition Of ◽  
Euonymus Scale

The objective of the research is to assess the species diversity of entomoacarocomplex of phytophagans of park cenoses of the Southern Coast of the Crimea, to identify dominant species and to determine the factors controlling their number and distribution. The research methods are the following: biological survey, visual inspection, pheromone traps, the definition of species by morphological characteristics. During the period from 2005 to 2018, the species composition of the entomoacarocomplex of phytophagans of ornamental crops in the parks of the Southern Coast of the Crimea has changed significantly under the influence of abiotic factors, anthropogenic load, development of tourism, business relations, increase in introduction works, change in the assortment of pesticides. Currently, the fauna of arthropods in the parks is represented by 55 species of phytophagans from 7 orders and 23 families, which include aboriginal, introduced and invasive species. Systematically phytophagans are sorted as follows: order Homoptera - 30 species, Hemiptera - 2, Hymenoptera - 1, Lepidoptera - 10, order Diptera - 2, Coleoptera - 7, Acariformes - 3 species. Homoptera order remains the most numerous in the number of species, which accounts for 54.5% of the total number of phytophagans. The dominant species among the local species are euonymus scale, viburnum scale, osier spittlebug, pistache marginal gall aphids, twospotted spider mite. Uncontrolled import of planting material from the European countries has led to the emergence of invasive species with high bio-potential, environmental plasticity, aggressiveness and causing invasions in the parks of the Southern Coast, which leads to the death of plants of local flora and introducents. Currently, 12 invasive species of pests have adapted on the territory of the Crimean parks. The process of invasions continues; it will lead to significant changes in the species composition of phytophagans.

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