scholarly journals Conservation strategies of Actias selene Hubner: A wild silk moth in Nagaland, India

2016 ◽  
Vol 17 (1&2) ◽  
pp. 41-45
Author(s):  
B.C. Chutia ◽  
◽  
C. Nath ◽  
L. N. Kakati ◽  
◽  
...  
Keyword(s):  
Conservation Strategies ◽  
Silk Moth ◽  
Wild Silk Moth

scholarly journals Fine-scale abundance and distribution of wild silk moth pupae

2007 ◽  
Vol 97 (1) ◽  
pp. 15-27 ◽  
Author(s):  
R. Veldtman ◽  
M.A. McGeoch ◽  
C.H. Scholtz
Keyword(s):  
Life History ◽  
Life Histories ◽  
Host Plants ◽  
Pupal Stage ◽  
Tree Patterns ◽  
Silk Moth ◽  
Larval Host ◽  
Pupation Site ◽  
Tree Characteristics ◽  
Wild Silk Moth

AbstractAlthough several factors influence herbivore insect distributions at any particular scale, the most important determinants are likely to differ between species with different life histories. Identifying what these factors are and how they relate to life history forms an important component of understanding the population dynamics of species, and the habitat requirements necessary for their conservation. The pupal stage of two wild silk moth species, Gonometa postica Walker and G. rufobrunnea Aurivillius (Lepidoptera: Lasiocampidae), is the target of harvesting practices that are totally dependent on the availability of pupae from natural populations. Consequently, and partly due to poor knowledge of the species' biology, there is substantial interest in the distribution of pupae among and within trees for both these species. It was investigated whether between- and within-tree pupal distributions in these two species are non-random, and if so, whether there are relationships between pupation site use and tree characteristics such as tree size, available pupation space and branch position. Between-tree patterns in pupal abundance were random in terms of absolute spatial position, but markedly non-random with respect to tree characteristics. The apparent G. postica pupae were aggregated on large larval host plants, whereas the cryptic G. rufobrunnea pupae were aggregated on non-host plants. These patterns reflect the life history differences of the two species. In contrast, at the within-tree scale, branch position, aspect and tree shape influenced pupation site choice similarly for both species. These patterns might be related to microclimate. Documenting between-tree and within-tree patterns in Gonometa pupal distributions is the first step towards explaining pupation site selection, as well as identifying possible evolutionarily selective factors in the species, and generating testable hypotheses from these.

Moth Spit

2021 ◽  
pp. 3-20
Author(s):  
Robert N. Wiedenmann ◽  
J. Ray Fisher
Keyword(s):  
Salivary Glands ◽  
Selective Breeding ◽  
Silk Moth ◽  
Wild Silk Moth

This chapter reviews how silk, the fabric of royalty, begins as threads of sticky secretions from a moth’s salivary glands—moth spit, in other words. But not just any moth, the domestic silkworm, the result of centuries of selective breeding of the ancestral wild silk moth. As the chapter explains, silk is produced today in much the same way as it was thousands of years ago when Chinese households formed a network of producers. It also shows how silk, although just one fabric with a long history, was for centuries reserved for royalty. Its beauty and appeal led to uses that ranged from robes created for emperors to serving as currency, literally worth its weight in gold and used to pay for both fealty and extortion. The story of silk is the story of humanity.

scholarly journals EFFECT OF FEEDING WITH HERB OF ERYTHRINA VARIEGATA TO BIOCOMPATIBILITY OF THE COCOON FIBER OF WILD SILK MOTH ATTACUS ATLAS FOR FUTURE APPLICATION AS BIOCOMPATIBLE OF SILK SUTURES

2018 ◽  
Vol 11 (15) ◽  
pp. 20 ◽  
Author(s):  
Tjokorda Sari Nindhia ◽  
Tjokorda Gde Tirta Nindhia ◽  
I Wayan Surata ◽  
Zdenek Knejzlik ◽  
Tomas Ruml
Keyword(s):  
Element Composition ◽  
Future Application ◽  
Silk Suture ◽  
Natural Polymer ◽  
Synthetic Materials ◽  
Silk Moth ◽  
Wild Silkworm ◽  
Effect Of Feeding ◽  
Wild Silk Moth

Objectives: Silk is biocompatible as biomaterial and has been used commercially as sutures. More interesting properties of the silk are that the mechanical properties exceed all natural polymer and synthetic materials. In this research, a type of silk suture is being developed from species of Attacus atlas to obtain better biocompatible sutures. A. atlas is a species of silk moth that consume not only single types of leaves. The Quality of cocoon fiber then can be arranged base on the types of the leaves that is consumed. Better biocompatibility sutures comparing with recent commercial silk sutures which is not biocompatible, can be achieved by feeding with variety types of leaves. Silk suture that already established in the market is a base product of Bombyx mori species of silk which is only consume one type of leaf (mulberry leaves).Methods: In this research, the A. atlas cocoon was produced by feeding with herb Erythrina variegate. The microstructure was observed, element composition as well as biocompatibles properties was investigated.Results: A high composition of kalium (K) as well as chloride (Cl) is identified in the fiber. The released fiber from cocoon also indicates high biocompatibility that is promising as biocompatible suture.Conclusion: The biocompatible fiber for future application as sutures is possible to be prepared by feeding the wild silkworm of A. atlas with leaf of E. variegate. The fiber is found rich with kalium (K) as well as chloride (Cl) with irregular shape of crystal at the surface of the fiber.

Predicting changes in distribution of a large coastal shark in the face of the strengthening East Australian Current

2020 ◽  
Vol 642 ◽  
pp. 163-177 ◽  
Author(s):  
Y Niella ◽  
AF Smoothey ◽  
V Peddemors ◽  
R Harcourt
Keyword(s):  
Austral Summer ◽  
Conservation Strategies ◽  
Limiting Factor ◽  
Commercial Fisheries ◽  
East Australian Current ◽  
Spatial And Temporal Patterns ◽  
Marine Animals ◽  
Factors Affecting ◽  
Southeastern Australia ◽  
The Face

In the face of accelerating climate change, conservation strategies will need to consider how marine animals deal with forecast environmental change as well as ongoing threats. We used 10 yr (2009-2018) of data from commercial fisheries and a bather protection program along the coast of New South Wales (NSW), southeastern Australia, to investigate (1) spatial and temporal patterns of occurrence in bull sharks and (2) environmental factors affecting bull shark occurrence along the coast of NSW. Predicted future distribution for this species was modelled for the forecast strengthening East Australian Current. Bull sharks were mostly harvested in small to larger estuaries, with average depth and rainfall responsible for contrasting patterns for each of the fisheries. There was an increase in the occurrence of bull sharks over the last decade, particularly among coastal setline fisheries, associated with seasonal availability of thermal gradients >22°C and both westward and southward coastal currents stronger than 0.15 and 0.60 m s-1, respectively, during the austral summer. Our model predicts a 3 mo increase in the availability of favourable water temperatures along the entire coast of NSW for bull sharks by 2030. This coastline provides a uniquely favourable topography for range expansion in the face of a southerly shift of warmer waters, and habitat is unlikely to be a limiting factor for bull sharks in the future. Such a southerly shift in distribution has implications for the management of bull sharks both in commercial fisheries and for mitigation of shark-human interactions.

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