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Pollinators of three species of coffee / by Charlene M. Samson.

By:

Samson, Charlene M [author]

Material type: Text

TextLanguage: English Publication details: Indang, Cavite, 2003. Cavite State University- Main Campus,Description: vii, 45p. : ill. ; 28 cm. illustrations ; cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

633.73 Sa4 2003

Online resources:

Click here to view abstract and table of contents

Abstract: Samson, Charlene M. Pollinators of Three Species of Coffee. Undergraduate Thesis. Bachelor of Science in Agriculture major in Crop Protection-Entomology. Cavite State University, Indang, Cavite. April, 2003. Adviser: Dr. Evelyn O. Singson. The study was conducted at the Crop Protection Laboratory, Department of Crop Sciences, CAFENR and at the Coffee Plantation of Cavite State University (CvSU) from April to October 2002. It aimed to determine the most abundant pollinators of the three coffee species: Coffea robusta, Coffea excelsa, and Coffea Liberica, to determine the foraging activity of the pollinators of each coffee species, and to relate the floral characteristics of the three coffee species with the morphological features of their most abundant pollinators. The major pollinators of the three coffee species were: Apis cerana, Apis dorsata, Apis mellifera, Bombus sp. and Trigoma sp. Apis cerana was the most abundant pollinator of Coffea excelsa and Coffea Liberica followed by Apis mellifera, Apis dorsata, and Bombus sp. On the other hand, Trigona sp. was the most abundant pollinator of Coffea robusta followed by Apis cerana, Apis mellifera, and Bombus sp. Apis cerana were active in the morning with peak from 0530h to 0630h in both Coffea excelsa, and Coffea Liberica, and from 0730h to 0930h in Coffea robusta. Bombus sp was the first to pollinate the three species of coffee immediately after anthesis. This was also observed with Apis dorsata, which prefer Coffea Liberica and Coffea excelsa but not Coffea robusta. The floral traits of Coffea Liberica such as wide floral diameter, and shallow and corolla with long pistil are adaptive for pollinating activities of Apis cerana which possesses shorter proboscis and smaller body size. The medium diameter and depth of corolla, longer stamen, and fewer number of stamen and petals of Coffea excelsa is also preffered by Apis cerana. The narrow diameter and depth of corolla, short stamen and greater number of stamen and petals of Coffea robusta are suitable for the short proboscis, small size and sparse pubescence of Trigona sp.

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Title notes ( 4 )

Holdings
Item type	Current library	Collection	Call number	Materials specified	URL	Status	Notes	Date due	Barcode
Theses / Manuscripts	Ladislao N. Diwa Memorial Library Theses Section	Non-fiction	633.73 Sa4 2003 (Browse shelf(Opens below))		Link to resource	Room use only	T-2456		00017552

Thesis (Bachelor of Science in Agriculture Major in Crop Protection) Cavite State University.

Includes bibliographical references.

Samson, Charlene M. Pollinators of Three Species of Coffee. Undergraduate Thesis. Bachelor
of Science in Agriculture major in Crop Protection-Entomology. Cavite State University, Indang,
Cavite. April, 2003. Adviser: Dr. Evelyn O. Singson.
The study was conducted at the Crop Protection Laboratory, Department of Crop Sciences,
CAFENR and at the Coffee Plantation of Cavite State University (CvSU) from April to October
2002. It aimed to determine the most abundant pollinators of the three coffee species: Coffea
robusta, Coffea excelsa, and Coffea Liberica, to determine the foraging activity of the pollinators
of each coffee species, and to relate the floral characteristics of the three coffee species with
the morphological features of their most abundant pollinators.
The major pollinators of the three coffee species were: Apis cerana, Apis dorsata, Apis
mellifera, Bombus sp. and Trigoma sp. Apis cerana was the most abundant pollinator of Coffea
excelsa and Coffea Liberica followed by Apis mellifera, Apis dorsata, and Bombus sp. On the
other hand, Trigona sp. was the most abundant pollinator of Coffea robusta followed by Apis
cerana, Apis mellifera, and Bombus sp.
Apis cerana were active in the morning with peak from 0530h to 0630h in both Coffea excelsa,
and Coffea Liberica, and from 0730h to 0930h in Coffea robusta. Bombus sp was the first to
pollinate the three species of coffee immediately after anthesis. This was also observed with
Apis dorsata, which prefer Coffea Liberica and Coffea excelsa but not Coffea robusta.
The floral traits of Coffea Liberica such as wide floral diameter, and shallow and corolla with
long pistil are adaptive for pollinating activities of Apis cerana which possesses shorter
proboscis and smaller body size. The medium diameter and depth of corolla, longer stamen,
and fewer number of stamen and petals of Coffea excelsa is also preffered by Apis cerana. The
narrow diameter and depth of corolla, short stamen and greater number of stamen and petals of
Coffea robusta are suitable for the short proboscis, small size and sparse pubescence of
Trigona sp.

Submitted to the University Library 04/01/2003 T-2456