نتایج جستجو برای: snail shell
تعداد نتایج: 59827 فیلتر نتایج به سال:
In the present study, some population characteristics of Rapa Sea snail (Rapana venosa) samples collected from coastal zone Eastern Black were investigated. For this purpose, whelk by snorkeling depths ∼7-13 m in Çamburnu Bay (Trabzon) year 2020. Morphometric measurements such as shell size (shell length and width) operculum (aperture well total body weight measured using a caliper with an accu...
Abstract A study was conducted for identification of heavy metal pollution from biological sample as a potential proxy environmental due to industrial waste. The using the emerging analytical tool, namely laser induced breakdown spectroscopy (LIBS). collected seawater near cement plant in Aceh. Samples is conch shell. dried open air and then prepared form pellet. analysis made by generating pla...
Hydrobioid gastropods are abundant in coastal systems and ecologically important for ecosystem functioning. We aimed to unravel the relationship between usual stress-related population attributes of dominant macrofaunal species Heleobia australis with indicators environmental quality pollution. Using Guanabara Bay (GB, Brazil) as a model multi-impacted system, our hypothesis is that increased a...
For most conispirally-coiled Gastropods with determinate growth, the geometry of spirally-winding whorls is usually constrained by a strong negative correlation between whorl growth rate and number reached at adulthood, as originally reported late S.J. Gould. Yet, beyond tight control shell-shape species level – resulting from this constraint what about amplitude intra-specific variability grow...
The aquatic gastropod mollusc, Pyrgophorus coronatus, may perform an important role in the transmission of an emergent ocular pathology among fishes in Lake Apoyo, Nicaragua. This disease emerged after an introduction of tilapia (Oreochromis niloticus) and the subsequent loss of Chara sp. beds in the lake. We compared the mollusc population densities in three habitats (sandy/muddy substrates, r...
Sodium hypochlorite has been used for cleaning specimens of freshwater and brackish water snails that are covered with deposits. Our experiments using two snail species, Semisulcospira niponica (Smith, 1876) S. reticulata Kajiyama Habe, 1961, showed this traditional method could remove thin deposit layers, including algae, but was not useful obstinate We found a new ammonium thioglycolate be ap...
Land snails are highly tolerant to cadmium exposure and are able to accumulate soil cadmium independently of food ingestion. However, little information exists on the kinetics of cadmium retention in terrestrial gastropods exposed to an increase in the soil cadmium content, over time. There is also little knowledge about how exposure to cadmium-polluted soils influences shell growth and archite...
Abstract Many parasites and hosts are embroiled in an on-going arms race that affects the evolution of each participant. One such battle is between parasitic nematodes terrestrial gastropods which have co-evolved for 90–130 MY. Recently, snails been shown to encase kill invading using their shell as a defence mechanism. However, there remarkably little known about this process terms understandi...
Metal matrix composites are in high demand for various applications the industrial sector and engineering firms. Therefore, new materials with enhanced mechanical ecologically favourable characteristics must be designed produced. This study focuses on possibility of developing an aluminium composite using agro-waste as reinforcement preference to other chemicals materials. The morphological ana...
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