Captive breeding of two insular populations of Pachyrhynchus sarcitis (Coleoptera: Curculionidae) from Lanyu and Babuyan Islands

Lung Chun Huang, Wen San Huang, Chung-Ping Lin, Olga M. Nuñeza, Hui Yun Tseng, Hsin Chieh Tang

Research output: Contribution to journalArticle

Abstract

Endemic species of oceanic islands are vulnerable due to their geographical isolation and small population sizes. For endangered island species, captive breeding program is an important strategy for conservation and sustainable management. Pachyrhynchus sarcitis is a flightless weevil decorated with colourful markings and distributed exclusively on several islets of Southeast Asia including Lanyu, Ludao, and Babuyan Islands. The life history of threatened Pachyrhynchus species of these islands was poorly known. This study reared P. sarcitis from Lanyu and Babuyan Islands for the first time in the laboratory using their host plant (Leea guineensis). The two island populations showed significant differences in instar numbers, in which the weevils from Lanyu Island had a higher instar number regardless the length of developmental duration. The adult body size of both sexes of the Babuyan population became smaller under laboratory condition; whereas Lanyu population in the laboratory did not show this trend. The differences in larval development might suggest local adaptation to the host plants or other life history associated characteristics which requires further research.

LanguageEnglish
Pages1233-1238
Number of pages6
JournalJournal of Asia-Pacific Entomology
Volume21
Issue number4
DOIs
Publication statusPublished - 2018 Dec 1

Fingerprint

myositis
Curculionidae
Coleoptera
breeding
instars
host plants
life history
threatened species
South East Asia
larval development
indigenous species
population size
body size
duration
gender

Keywords

  • Conservation
  • Endangered species
  • Island endemics
  • Life history
  • Taiwan
  • The Philippines

ASJC Scopus subject areas

  • Insect Science

Cite this

Captive breeding of two insular populations of Pachyrhynchus sarcitis (Coleoptera : Curculionidae) from Lanyu and Babuyan Islands. / Huang, Lung Chun; Huang, Wen San; Lin, Chung-Ping; Nuñeza, Olga M.; Tseng, Hui Yun; Tang, Hsin Chieh.

In: Journal of Asia-Pacific Entomology, Vol. 21, No. 4, 01.12.2018, p. 1233-1238.

Research output: Contribution to journalArticle

Huang, Lung Chun ; Huang, Wen San ; Lin, Chung-Ping ; Nuñeza, Olga M. ; Tseng, Hui Yun ; Tang, Hsin Chieh. / Captive breeding of two insular populations of Pachyrhynchus sarcitis (Coleoptera : Curculionidae) from Lanyu and Babuyan Islands. In: Journal of Asia-Pacific Entomology. 2018 ; Vol. 21, No. 4. pp. 1233-1238.
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