1,720,988 research outputs found
Telatrygon Last, Naylor & Manjaji-Matsumoto 2016
No full textGenus Telatrygon Three specimens of a sharp-snouted stingray were preliminarily identified as Telatrygon crozieri,based on morphology. Samples were not obtained for genetic analysis and so further work is needed to confirm the identification and to distinguish T. crozieri from the recently described T. biasa recorded from Indonesia (Last et al. 2016d).Published as part of Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2) on page 221, DOI: 10.11646/zootaxa.5027.2.4, http://zenodo.org/record/544823
Pateobatis Last, Naylor & Manjaji-Matsumoto 2016
No full textGenus Pateobatis A total of 21 specimens were identified as Pateobatis jenkinsii (Figure 6), based on morphology and genetic analysis. As Ahmed (2020) included this species in a checklist (as Himantura jenkinsii), it is not considered a new record for Bangladesh, but it represents the first verified record.Published as part of Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2) on page 219, DOI: 10.11646/zootaxa.5027.2.4, http://zenodo.org/record/544823
Brevitrygon Last, Naylor & Manjaji-Matsumoto 2016
No full textGenus Brevitrygon Two species within the genus Brevitrygon (B. walga and B. imbricata) have previously been reported in Bangladesh (Hoq et al. 2011). This study confirmed an additional eight specimens morphologically consistent with Brevitrygon heterura (Figure 2).Published as part of Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2) on page 217, DOI: 10.11646/zootaxa.5027.2.4, http://zenodo.org/record/544823
Narcinidae T.N.Gill 1862
No full textFamily Narcinidae One specimen of Narcine was recorded which appears to be consistent with N. sp. of Psomadakis et al. (2020). This appeared to be morphologically similar to N. brevilabiata and N. atzi. Further specimens are required to confirm the species identification therefore this species is tentatively identified as Narcine sp. (Figure 14). (sensu Psomadakis et al. 2020).Published as part of Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2) on page 224, DOI: 10.11646/zootaxa.5027.2.4, http://zenodo.org/record/544823
Dasyatidae Jordan & Gilbert 1879
No full textFamily Dasyatidae Dasyatidae (stingrays) are the dominant group of rays in the coastal tropical Indo-West Pacific. While stingray taxonomy is problematic, recent revisions have vastly improved knowledge of this family (Last et al. 2016a). Dasyatidae are amongst the most commonly landed ray groups in Bangladesh, with high demand for consumption and accessories (Last et al. 2016a; Haque et al. 2018). This report identified seven species of Dasyatidae rays in addition to the 24 species previously reported in Bangladesh (Roy et al. 2015).Published as part of Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2) on page 213, DOI: 10.11646/zootaxa.5027.2.4, http://zenodo.org/record/544823
Hemiscylliidae T.N.Gill 1862
No full textFamily Hemiscylliidae Bamboo sharks are poorly studied in the Bangladesh region, though a total of five species have been recorded; Chiloscyllium burmensis, C. griseum, C. indicum and C. punctatum (Hoq et al. 2011; Haque et al. 2019a) and most recently C. hasseltii (Datta et al. 2020). In this study, a total of 129 specimens of Chiloscyllium hasseltii (Figure 16) were morphologically identified. Eleven specimens that appeared morphologically consistent with Chiloscyllium arabicum (Figure 17) were also recorded, but in the absence of genetic data this warrants further investigation.Published as part of Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2) on page 226, DOI: 10.11646/zootaxa.5027.2.4, http://zenodo.org/record/544823
Rhinobatidae Bonaparte 1835
No full textFamily Rhinobatidae <p> <i>Rhinobatos ranongensis</i> (Figure 15), which was recently described from the Bay of Bengal and Arabian sea (Last <i>et al</i>. 2019), was recorded from> 300 specimens from a single site. With the record of this <i>Rhinobatos</i> species, a total of at least eight species of Rhinopristiformes, including giant guitarfish (Glaucostegidae), guitarfish (Rhinobatidae) and wedgefish (Rhinidae), have been confirmed in the territorial waters of Bangladesh (Haque in review). Although not a new record, one specimen from one site and one genetic sample collected from the processed meat of an unknown species was confirmed to be <i>Rhinobatos lionotus</i> representing the first verified report from Bangladesh.</p>Published as part of <i>Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2)</i> on page 225, DOI: 10.11646/zootaxa.5027.2.4, <a href="http://zenodo.org/record/5448230">http://zenodo.org/record/5448230</a>
Pastinachus Ruppell in Ruppell 1828
No full textGenus Pastinachus The current study confirmed two Pastinachus ater (Figure 7) specimens in Bangladesh and 18 specimens of Pastinachus solocirostris (Figure 8). It is assumed that, P. ater has been previously reported from Bangladesh as P. sephen (Roy et al. 2015), though a recent taxonomic study found that P. sephen is only found in the Western Indian Ocean (Red Sea to Pakistan) (Last & Manjaji-Matsumoto 2010). However, four specimens were morphologically very close to P. sephen and referred to as P. cf. sephen (Figure 9) needing further taxonomic work. We also recorded two specimens of a third species of Pastinachus, which are morphologically consistent with P. gracilicaudus. Further taxonomic examination is required, however, as differences were found between the NADH2 sequences of the Bangladesh as compared to Borneo specimens. This species is tentatively referred to as Pastinachus cf. gracilicaudus (Figure 10).Published as part of Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2) on page 219, DOI: 10.11646/zootaxa.5027.2.4, http://zenodo.org/record/544823
Neotrygon Castelnau 1873
No full textGenus Neotrygon The Neotrygon kuhlii species complex has recently been expanded (Last et al. 2016). These taxonomic revisions, however, did not consider Bay of Bengal specimens in detail. To date, two species have been recorded from Bangladesh; N. indica and N. kuhlii (Haque et al. 2019a; Hoq et al. 2011). In this present study, a total of 649 specimens were examined, and five sampled for genetic analysis. Morphological differences were observed, including the dorsal coloration and tail banding. Several specimens were most consistent with N. caeruleopunctata, but have been preliminarily identified as N. cf. caeruleopunctata (Figure 5) due to possible genetic differences in the Bay of Bengal specimens. It is likely that previous records of N. kuhlii represent this species, with N. kuhlii now considered to occur only from the Solomon Islands, and adjacent island groups (Last et al. 2016a). All genetically sampled specimens were labelled as Neotrygon Bay of Bengal variants.Published as part of Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2) on page 218, DOI: 10.11646/zootaxa.5027.2.4, http://zenodo.org/record/544823
Maculabatis Haque & White & Cavanagh & Biswas & Hossain 2021
No full textGenus Maculabatis The new genus Maculabatis, as well as several new species, was recently assigned to a group of morphologically similar stingray species (Last et al. 2016c; Manjaji-Matsumoto & Last 2016). The recently described Maculabatis bineeshi was recorded in Bangladesh for the first time in this study (Figure 3), with a total of 21 specimens recorded, both morphologically (Manjaji-Matsumoto & Last 2016) and genetically. M. arabica (Figure 4) was genetically identified from one specimen and morphologically identified from another 18 specimens. In addition, seven specimens that were morphologically most consistent with M. macrura were examined. M. macrura has only recently been established as a valid species, and is morphologically very similar to M. gerrardi (Last et al. 2016a), with distinguishing characteristics poorly understood. Further genetic studies are therefore recommended to assign these specimens to the correct species.Published as part of Haque, Alifa Bintha, White, William T., Cavanagh, Rachel D., Biswas, Aparna Riti & Hossain, Nazia, 2021, New records of elasmobranchs in the Bay of Bengal, Bangladesh: further taxonomic research is essential, pp. 211-230 in Zootaxa 5027 (2) on page 217, DOI: 10.11646/zootaxa.5027.2.4, http://zenodo.org/record/544823
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