Volume 9-14 (2020-26)
v10i2.256ISSN: 1800-427X (printed)
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i2.256
Submitted date: 25 July 2021
Accepted date: 26 October 2021
Published date: 22 November 2021
Pp. 84–88, pl. 17.
RELATIONSHIP BETWEEN PUPAL COLOUR AND SEX RATIO OF THE COMMON MORMON, Papilio polytes romulus CRAMER, 1775 (INSECTA: LEPIDOPTERA), SRI LANKA
D. Eranda. N. Mandawala* & P.A.D. Mokshi V. Perera
*Corresponding author. E-mail: nipunika001@gmail.com
Abstract
A free ranging female common Mormon (Papilio polytes romulus) butterfly was observed laying eggs on a Citrus aurantiifolia (Family: Rutaceae) plant in a home garden in Battaramulla. 16 eggs were collected and reared in the lab. The duration and measurements of each stage were recorded. After eclosion the sex and wingspan of all adult butterflies were recorded and they were released back to the wild. Pupae were observed in two colours: green and brown. Out of 16 pupae, 12 were green (75%) and four were brown (25%). The four brown pupae gave rise to two males (50%) and two females (50%). The 12 green pupae gave rise to 10 males (83%) and two females (17%). The sex ratios regardless of the pupal colour showed male dominance with 12 males (75%) and four females (25%). All four females were of the romulus form. A strong relationship between pupal colour and substrate texture was observed, but no relationship between pupal colour, sex and sex ratios was seen.
Key words : sex ratio, male dominance, Papilionidae, pupal colour, sexual dimorphism
Section Editor: Himesh D. Jayasinghe
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i2.256
Submitted date: 25 July 2021
Accepted date: 26 October 2021
Published date: 22 November 2021
Pp. 84–88, pl. 17.
RELATIONSHIP BETWEEN PUPAL COLOUR AND SEX RATIO OF THE COMMON MORMON, Papilio polytes romulus CRAMER, 1775 (INSECTA: LEPIDOPTERA), SRI LANKA
D. Eranda. N. Mandawala* & P.A.D. Mokshi V. Perera
*Corresponding author. E-mail: nipunika001@gmail.com
Abstract
A free ranging female common Mormon (Papilio polytes romulus) butterfly was observed laying eggs on a Citrus aurantiifolia (Family: Rutaceae) plant in a home garden in Battaramulla. 16 eggs were collected and reared in the lab. The duration and measurements of each stage were recorded. After eclosion the sex and wingspan of all adult butterflies were recorded and they were released back to the wild. Pupae were observed in two colours: green and brown. Out of 16 pupae, 12 were green (75%) and four were brown (25%). The four brown pupae gave rise to two males (50%) and two females (50%). The 12 green pupae gave rise to 10 males (83%) and two females (17%). The sex ratios regardless of the pupal colour showed male dominance with 12 males (75%) and four females (25%). All four females were of the romulus form. A strong relationship between pupal colour and substrate texture was observed, but no relationship between pupal colour, sex and sex ratios was seen.
Key words : sex ratio, male dominance, Papilionidae, pupal colour, sexual dimorphism
Section Editor: Himesh D. Jayasinghe
v10i2.255ISSN: 1800-427X (printed)
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i2.255
Published date: 22 November 2021
Pp. 80–83
EDITORIAL : A research priority for biodiversity conservation
Chris Margules
Deputy Editor: Taprobanica, the journal of Asian Biodiversity
Conservation biology emerged as a scientific discipline in the mid-1980s with the explicit practical goal of conserving species and habitats. The term ‘biodiversity’ was coined soon after, apparently at some time during the organization of the September 1986 National Forum on Biodiversity held by the US National Academy of Sciences and the Smithsonian Institution. The science of conservation biology was quickly taken up. Journals proliferated and textbooks soon followed. Laboratories within university biology and ecology departments specialized in conservation biology. Along with a great many other young biologists and ecologists, I climbed the moral high ground and set about research to help change the future by discovering how to protect biodiversity.
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i2.255
Published date: 22 November 2021
Pp. 80–83
EDITORIAL : A research priority for biodiversity conservation
Chris Margules
Deputy Editor: Taprobanica, the journal of Asian Biodiversity
Conservation biology emerged as a scientific discipline in the mid-1980s with the explicit practical goal of conserving species and habitats. The term ‘biodiversity’ was coined soon after, apparently at some time during the organization of the September 1986 National Forum on Biodiversity held by the US National Academy of Sciences and the Smithsonian Institution. The science of conservation biology was quickly taken up. Journals proliferated and textbooks soon followed. Laboratories within university biology and ecology departments specialized in conservation biology. Along with a great many other young biologists and ecologists, I climbed the moral high ground and set about research to help change the future by discovering how to protect biodiversity.
v10i1.254ISSN: 1800-427X (print)
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i1.254
Submitted date: 19 December 2020
Published date: 27 May 2021
Pp. 79.
ERRATUM :Gowande, G.G., S.R. Ganesh and Z.A. Mirza (2020). A new cryptic species of bush frog (Amphibia: Anura: Raorchestes) from the Southern Eastern Ghats, India. Taprobanica, 9 (2): 164–173 + pls. 49–50.
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i1.254
Submitted date: 19 December 2020
Published date: 27 May 2021
Pp. 79.
ERRATUM :Gowande, G.G., S.R. Ganesh and Z.A. Mirza (2020). A new cryptic species of bush frog (Amphibia: Anura: Raorchestes) from the Southern Eastern Ghats, India. Taprobanica, 9 (2): 164–173 + pls. 49–50.
v10i1.253ISSN: 1800-427X (print)
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i1.253
Submitted date: 9 April 2021
Accepted date: 10 May 2021
Published date: 27 May 2021
Pp. 71–78, pl. 16.
On large colonies of rufous horseshoe bats (Rhinolophus rouxii), western Sri Lanka
A.P.M.J. Bandara* & G. Edirisinghe
*E-mail: malshabandara83@gmail.com
Rhinolophus rouxii and Hipposideros speoris are small-sized bats belonging to the Rhinolophidae and Hipposideridae families, respectively. Rhinolophus rouxii is widely distributed in Sri Lanka, India, Nepal, China and Vietnam, whereas H. speoris is found in Sri Lanka, India and more recently reported from Myanmar. These two species are listed as of Least Concern in both Global and National Red Lists of IUCN. As per the existing distribution records, they are commonly found in the low country: R. rouxii up to an elevation of 1,590 m, whereas H. speoris is at altitudes ranging up to 1,385 m.
Section Editor: Burton Lim
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i1.253
Submitted date: 9 April 2021
Accepted date: 10 May 2021
Published date: 27 May 2021
Pp. 71–78, pl. 16.
On large colonies of rufous horseshoe bats (Rhinolophus rouxii), western Sri Lanka
A.P.M.J. Bandara* & G. Edirisinghe
*E-mail: malshabandara83@gmail.com
Rhinolophus rouxii and Hipposideros speoris are small-sized bats belonging to the Rhinolophidae and Hipposideridae families, respectively. Rhinolophus rouxii is widely distributed in Sri Lanka, India, Nepal, China and Vietnam, whereas H. speoris is found in Sri Lanka, India and more recently reported from Myanmar. These two species are listed as of Least Concern in both Global and National Red Lists of IUCN. As per the existing distribution records, they are commonly found in the low country: R. rouxii up to an elevation of 1,590 m, whereas H. speoris is at altitudes ranging up to 1,385 m.
Section Editor: Burton Lim
v10i1.252ISSN: 1800-427X (print)
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i1.252
Submitted date: 26 April 2021
Accepted date: 24 May 2021
Published date: 27 May 2021
Pp. 66–70, pl. 15.
Roosting of black kites (Milvus migrans) in Dhaka Metropolis, Bangladesh
S. Hasan, A.M.M.K. Abedin, A.K.Sarker & H. Naner*
*E-mail: likhi.habibon@gmail.com
Black kites, Milvus migrans, thrive in urban areas, agricultural areas and grasslands with adequate nesting locations and also occurs in villages and towns, deciduous forest and open areas including wetlands throughout Bangladesh. Black kites roost communally in trees and groves of trees. Communal roosting is thought to provide benefits in terms of decreased predation risk and increased foraging efficiency. Some findings suggest communal roosting is influenced by day length, light intensity and local environmental conditions but this remains controversial. Roosting sites can play a significant role in population regulation in birds.
Section Editor: Sampath Seneviratne
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i1.252
Submitted date: 26 April 2021
Accepted date: 24 May 2021
Published date: 27 May 2021
Pp. 66–70, pl. 15.
Roosting of black kites (Milvus migrans) in Dhaka Metropolis, Bangladesh
S. Hasan, A.M.M.K. Abedin, A.K.Sarker & H. Naner*
*E-mail: likhi.habibon@gmail.com
Black kites, Milvus migrans, thrive in urban areas, agricultural areas and grasslands with adequate nesting locations and also occurs in villages and towns, deciduous forest and open areas including wetlands throughout Bangladesh. Black kites roost communally in trees and groves of trees. Communal roosting is thought to provide benefits in terms of decreased predation risk and increased foraging efficiency. Some findings suggest communal roosting is influenced by day length, light intensity and local environmental conditions but this remains controversial. Roosting sites can play a significant role in population regulation in birds.
Section Editor: Sampath Seneviratne
Hubungi Kami
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