Archives
v10i2.258ISSN: 1800-427X (printed)
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i2.258
Submitted date: 7 June 2021
Accepted date: 17 September 2021
Published date: 22 November 2021
Pp. 121–122
A freshwater crab (Barytelphusa sp.) feeding on a catfish (Pterocryptis sp.)
Y. Kalki*
*E-mail: yatin.kalki@gmail.com
The freshwater crab, Barytelphusa cunicularis (Westwood, 1836), is a common and widespread crustacean species inhabiting freshwater streams throughout India except the northeast. It is an omnivore that feeds on small crustaceans, gastropods, insects and aquatic vegetation. This species is commonly collected as a food commodity and is also often reared in captivity for the same purpose. In captivity, these crabs seem to prefer animal-based food and are generally fed about 10% of their total biomass in prawn and rice flakes daily. Observations of B. cunicularis feeding in nature are scant in the literature, and to the best of my knowledge there have not been any reports of the species feeding on fish. Herein I report the first observation of B. cunicularis feeding on a Malabar silurus, Pterocryptis wynaadensis, a type of catfish.
Section Editor: Lee Harding
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i2.258
Submitted date: 7 June 2021
Accepted date: 17 September 2021
Published date: 22 November 2021
Pp. 121–122
A freshwater crab (Barytelphusa sp.) feeding on a catfish (Pterocryptis sp.)
Y. Kalki*
*E-mail: yatin.kalki@gmail.com
The freshwater crab, Barytelphusa cunicularis (Westwood, 1836), is a common and widespread crustacean species inhabiting freshwater streams throughout India except the northeast. It is an omnivore that feeds on small crustaceans, gastropods, insects and aquatic vegetation. This species is commonly collected as a food commodity and is also often reared in captivity for the same purpose. In captivity, these crabs seem to prefer animal-based food and are generally fed about 10% of their total biomass in prawn and rice flakes daily. Observations of B. cunicularis feeding in nature are scant in the literature, and to the best of my knowledge there have not been any reports of the species feeding on fish. Herein I report the first observation of B. cunicularis feeding on a Malabar silurus, Pterocryptis wynaadensis, a type of catfish.
Section Editor: Lee Harding
v10i2.257ISSN: 1800-427X (printed)
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i2.257
Submitted date: 19 September 2021
Accepted date: 6 November 2021
Published date: 22 November 2021
Pp. 89–120, pls. 18–25.
TAXONOMIC COMPOSITION OF THE Rhabdophis subminiatus (SCHLEGEL, 1837) SPECIES COMPLEX (REPTILIA: NATRICIDAE) WITH THE DESCRIPTION OF A NEW SPECIES FROM CHINA
Patrick David & Gernot Vogel*
*Corresponding author. E-mail: gernot.vogel@t-online.de
Abstract
The systematics of Rhabdophis subminiatus (Schlegel, 1837) at subspecies level has long proved to be controversial. We analyse the variation of selected morphological characters in 179 specimens from populations covering the whole range of R. subminiatus sensu lato. Based on this review, we recognize four morphological groups, of which two do not agree with the current definitions and distributions of the currently recognized subspecies R. s. subminiatus. The “northernmost group” agrees with the definition of Natrix helleri Schmidt, 1925. In contrast, the “southernmost group” agrees with the syntypes of Tropidonotus subminiatus and we here restrict this species to the Sunda Region. We also discuss a previous designation of the lectotype of T. subminiatus, which we consider invalid, and we here make it valid in the sense of the Code. Furthermore, our analysis allows us to define a third group that is widespread in the Indochinese Region and Malayan Peninsula. For this geographically “central group”, the name Natrix subminiata siamensis Mell, 1931, is available. We therefore resurrect this taxon from its synonymy with R. subminiatus and we designate a lectotype in agreement with requirements of the Code. Lastly, we recognize a fourth group at species level, endemic to Hainan Island, China, that we describe as a new species. This division into four morphological groups at species level is coherent with phylogenetic analyses recently published in the literature. We also discuss and modify the taxonomic status of Natrix subminiata hongkongensis Mell, 1931 and Natrix (Rhabdophis) laobaoensis Bourret, 1934, now regarded as synonyms of R. subminiatus and R. siamensis, respectively.
Key words : Asia, Hainan, lectotype, morphological variation, Natricidae, Natrix, Serpentes, taxonomy
Section Editor: Thasun Amarasinghe
LSID:urn:lsid:zoobank.org
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v10i2.257
Submitted date: 19 September 2021
Accepted date: 6 November 2021
Published date: 22 November 2021
Pp. 89–120, pls. 18–25.
TAXONOMIC COMPOSITION OF THE Rhabdophis subminiatus (SCHLEGEL, 1837) SPECIES COMPLEX (REPTILIA: NATRICIDAE) WITH THE DESCRIPTION OF A NEW SPECIES FROM CHINA
Patrick David & Gernot Vogel*
*Corresponding author. E-mail: gernot.vogel@t-online.de
Abstract
The systematics of Rhabdophis subminiatus (Schlegel, 1837) at subspecies level has long proved to be controversial. We analyse the variation of selected morphological characters in 179 specimens from populations covering the whole range of R. subminiatus sensu lato. Based on this review, we recognize four morphological groups, of which two do not agree with the current definitions and distributions of the currently recognized subspecies R. s. subminiatus. The “northernmost group” agrees with the definition of Natrix helleri Schmidt, 1925. In contrast, the “southernmost group” agrees with the syntypes of Tropidonotus subminiatus and we here restrict this species to the Sunda Region. We also discuss a previous designation of the lectotype of T. subminiatus, which we consider invalid, and we here make it valid in the sense of the Code. Furthermore, our analysis allows us to define a third group that is widespread in the Indochinese Region and Malayan Peninsula. For this geographically “central group”, the name Natrix subminiata siamensis Mell, 1931, is available. We therefore resurrect this taxon from its synonymy with R. subminiatus and we designate a lectotype in agreement with requirements of the Code. Lastly, we recognize a fourth group at species level, endemic to Hainan Island, China, that we describe as a new species. This division into four morphological groups at species level is coherent with phylogenetic analyses recently published in the literature. We also discuss and modify the taxonomic status of Natrix subminiata hongkongensis Mell, 1931 and Natrix (Rhabdophis) laobaoensis Bourret, 1934, now regarded as synonyms of R. subminiatus and R. siamensis, respectively.
Key words : Asia, Hainan, lectotype, morphological variation, Natricidae, Natrix, Serpentes, taxonomy
Section Editor: Thasun Amarasinghe
LSID:urn:lsid:zoobank.org
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.
v5i1.103ISSN: 1800-427X (print)
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v5i1.103
Submitted date: 18 February 2013
Accepted date: 26 April 2013
Published date: 15 June 2013
Pp. 97–98.
A note on bird–habitat relationship in Kirala Kele, Sri Lanka
W.G.K.H. Samarasekara, E.P.S. Chandana* & N.J. de S. Amarasinghe
*Corresponding author. E-mail: epschandana@zoo.ruh.ac.lk
Wetlands and their associated biodiversity are threatened by habitat loss and fragmentation, invasive species, and global climate change. Knowledge of the bird distribution pattern with respect to the habitats is critically important in conservation and management of both birds and their habitats. Hence, an attempt was made to investigate the abundance and diversity of birds associated with selected habitats in the Kirala–Kele (K–K) marshland system with reference to the habitat characters between June 2010 and November 2010. K–K Eco touring zone is one such marshland type wetland situated in Matara, Southern Sri Lanka. It covers an area of about 1,800 ha of natural marsh areas and abandoned paddy fields. In this study K–K bird sanctuary was divided into five sites, differing in water retention and vegetation types, situated along the southwest – northeast trail at least 500 m apart from each other.
Section Editor: Varadarajan Gokula
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v5i1.103
Submitted date: 18 February 2013
Accepted date: 26 April 2013
Published date: 15 June 2013
Pp. 97–98.
A note on bird–habitat relationship in Kirala Kele, Sri Lanka
W.G.K.H. Samarasekara, E.P.S. Chandana* & N.J. de S. Amarasinghe
*Corresponding author. E-mail: epschandana@zoo.ruh.ac.lk
Wetlands and their associated biodiversity are threatened by habitat loss and fragmentation, invasive species, and global climate change. Knowledge of the bird distribution pattern with respect to the habitats is critically important in conservation and management of both birds and their habitats. Hence, an attempt was made to investigate the abundance and diversity of birds associated with selected habitats in the Kirala–Kele (K–K) marshland system with reference to the habitat characters between June 2010 and November 2010. K–K Eco touring zone is one such marshland type wetland situated in Matara, Southern Sri Lanka. It covers an area of about 1,800 ha of natural marsh areas and abandoned paddy fields. In this study K–K bird sanctuary was divided into five sites, differing in water retention and vegetation types, situated along the southwest – northeast trail at least 500 m apart from each other.
Section Editor: Varadarajan Gokula
Hubungi Kami
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