The Bridge Connecting Silkworms to Mosquitos

This chapter relates the history of sugar, a thread that links the Silk Roads, Portuguese sailors, Atlantic islands, endangered seals, the African slave trade, and yellow fever, all because of our physiological need for glucose, which we satisfy with sugar. The chapter tells how from its origin in Southeast Asia, sugarcane, later called “Creole cane” and processing technology moved along the Silk Roads to Western Asia, then to Mediterranean islands. To begin with, Portuguese colonists transformed the Atlantic island of Madeira into a large sugar producer using slave labor until ecological and economic collapse forced production to move to São Tomé, using Angolan slave labor. After Portugal discovered Brazil, colonists took sugarcane with them, creating large plantations and initiating the enslavement and trans-Atlantic movement of millions of Africans. As the chapter shows, sugar production moved into the Caribbean and Central America, and African slave ships inadvertently carried yellow fever and yellow fever mosquito to the Americas.

A Peculiar Distribution of the Emerging Nematode Angiostrongylus cantonensis in the Canary Islands (Spain): Recent Introduction or Isolation Effect?

Angiostrongylus cantonensis is an emerging zoonotic nematode recognized as the leading cause of eosinophilic meningitis in the word. After its discovery in China, it was recorded in 30 countries worldwide. Recently, it has expanded to new areas such as South America and it has been recently found in the Atlantic island of Tenerife (Canary Islands). In order to characterize the distribution of A. cantonensis in the Canary Islands, the lungs of 1462 rodents were sampled in eight islands of the archipelago over 13 years and were then analyzed for A. cantonensis. Remarkably, the parasite was detected only in Tenerife, in Rattus rattus (19.7%) and Rattus norvegicus (7.14%). They were concretely in the northern part of the island, which had a warmer and more humid climate than the south and main cities. The absence of this nematode in other islands with similar environmental conditions could be explained by an isolation effect or by a recent introduction of the parasite in the islands. Besides, the presence in Tenerife of the most invasive lineage of A. cantonensis reinforced the hypothesis of a recent introduction on this island. This study highlights the need to implement control measures to prevent the expansion to other areas in order to avoid the transmission to humans and other animals.

Tasting Place: Themes in Food and Beverage Product Logos from Three North Atlantic Island Regions

Islands have long been romanticized for their potential to facilitate the kind of escape from globalization increasingly sought by neolocalism-driven consumers, and are thus uniquely positioned to emphasize their distinctive environment and culture through a holistic destination brand that targets both the tourism and local product markets. The current study examines the relationship between destination brands and local food and beverage brands in three North Atlantic island regions: Newfoundland, Iceland, and Shetland. Using a blend of content and thematic analysis to identify and analyze prominent themes employed in product logos, this study offers insight regarding food and beverage branding approaches in island contexts and their relationship to regional destination brands. Throughout the content examined for this study, island-based food and beverage producers demonstrated an intense and dynamic connection to place, as exemplified through the themes of place, culture, and environment embedded in their logos. Discussion of the study findings highlights the importance of strong logo branding for entrepreneurial success and regional tourism promotion, and advocates for future research and practical implementation of effective branding and logo design.

Moth versus fly: a preliminary study of the pollination mode of two species of endemic Asteraceae from St Helena (Commidendrum robustum and C. rugosum) and its conservation implications

Commidendrum robustum (Roxb.) DC. (St Helena gumwood) and C. rugosum (Dryand.) DC. (St Helena scrubwood) are ecologically important, endemic woody Asteraceae from the isolated South Atlantic island of St Helena. Once very abundant, they now exist in sparse fragmented populations due to 500 years of environmental destruction. They are sister taxa that evolved on the island and are reported to hybridise. Commidendrum rugosum has a saucer-like erect capitulum, whereas C. robustum has a somewhat globular hanging capitulum. Using daytime timelapse photography to follow capitula through their life cycle, we found that C. rugosum appears to be myophilous, visited largely by flies (including the endemic syrphid, Sphaerophoria beattiei Doesburg & Doesburg) and occasionally by Lepidoptera. Commidendrum robustum, on the other hand, although visited by flies, strongly attracts moths (especially noted at the Millennium Forest site). Our data suggest that moth visits may reduce visits from flies due to the sensitivity of flies to interference by other insects. We conclude that C. robustum may have a mixed syndrome of myophily/phalaenophily and that there is apparently some divergence of the pollination niche between the two species. Its potential in attracting moths, coupled with its former abundance, suggests that it may have been a major food source for adults of the numerous endemic moths. Pollinator activity was measured by insect visitation rates (mean visits per capitulum per day, V) and insect residence time (mean pollinator kiloseconds per capitulum per day, R). Both are higher for C. robustum (C. rugosum, V = 16.4, R = 3.101; C. robustum, V = 34.0, R = 8.274), reflecting the abundance of moths on the capitula at the Millennium Forest site. The conservation implications of the pollination mode are that: (1) there is considerable pollinator activity on the capitula and pollination is not currently a limiting factor for plant reproduction; (2) gene exchange between geographically-isolated populations of C. rugosum is likely to be minimal due to the apparent reliance of the species for pollination on small flies (especially Sphaerophoria beattiei), which are believed to be not effective as pollinators over long distances (> 1 km). A possible exception is the strong-flying drone-fly, Eristalis tenax Linn. which, although not as abundant as Sphaerophoria, does visit the flowers; (3) there is considerable overlap between the two species in flower visitors and interspecific pollen transfer is possible where the two species grow intermixed (which has potential positive and negative implications for species survival).