Material and methods
Measurements were taken as straight lines (to the nearest
0.1 mm) between two points (see Schindler & Schmidt
2006) with an electronic digital calliper. Proportions are expressed as percentages of standard length (SL). Terminology for measurements and colour pattern is based on Witte & Schmidt (1992) with modifications as specified in Schindler & Schmidt (2006). Counts were made as described by Witte & Schmidt (1992) except for the number of predorsal scales, which were counted continuously. Numbers in brackets indicate the number of specimens examined for the datum in question.
To ensure the optimally objective comparison of col- ours, all photographs of live specimens were taken under the same conditions. The photographs were taken us- ing a camera flash with a colour temperature of about
5600 Kelvin, without any influence from any other light
source.
Water parameters were measured in the field with the following instruments: wtw-Weilheim, type pH 320 with pH electrode SenTix 21 for the hydrogen-ion concentra- tion and water temperature, and Sera Handmessgerät (tolerance of 0.2%) for the electrical conductivity.
The material examined is listed under the species de- scription below. Types are deposited in the Senckenberg Naturhistorische Sammlungen Dresden, Museum für Tierkunde, Dresden (MTD). Specimens not indicated as the holotype or paratypes are non-type material. The de- scription follows the general format used by tan & ng (2005). In addition to the data obtained from material examined, data from tan & ng (2005; 2006), Witte & Schmidt (1992), and previously published descriptions of species (see introduction) were also used.
In accordance with previous taxonomic publications on the genus Betta (see tan & ng, 2005; 2006), the new species is diagnosed and described on eidonomical fea- tures. The definition of species groups and the classifica- tion of species follows tan & ng (2005). The species concept used is the diagnostic variant of the ‘phyloge- netic species concept’ (nixon & Wheeler, 1990).
Material and methods Measurements were taken as straight lines (to the nearest0.1 mm) between two points (see Schindler & Schmidt2006) with an electronic digital calliper. Proportions are expressed as percentages of standard length (SL). Terminology for measurements and colour pattern is based on Witte & Schmidt (1992) with modifications as specified in Schindler & Schmidt (2006). Counts were made as described by Witte & Schmidt (1992) except for the number of predorsal scales, which were counted continuously. Numbers in brackets indicate the number of specimens examined for the datum in question.To ensure the optimally objective comparison of col- ours, all photographs of live specimens were taken under the same conditions. The photographs were taken us- ing a camera flash with a colour temperature of about5600 Kelvin, without any influence from any other lightsource.Water parameters were measured in the field with the following instruments: wtw-Weilheim, type pH 320 with pH electrode SenTix 21 for the hydrogen-ion concentra- tion and water temperature, and Sera Handmessgerät (tolerance of 0.2%) for the electrical conductivity.ตรวจสอบวัสดุที่อยู่ภายใต้การชนิด de-แผ่นด้านล่าง ชนิดฝากใน Dresden Senckenberg Naturhistorische Sammlungen พิพิธภัณฑ์ für Tierkunde, Dresden (MTD) ไม่ระบุเป็น holotype หรือ paratypes ไว้เป็นตัวอย่างวัสดุชนิดไม่ได้ เดอแผ่นตามรูปแบบทั่วไปที่ใช้ โดยตาลและ ng (2005) นอกจากข้อมูลที่ได้จากการตรวจสอบวัสดุ ข้อมูลจากตาลและ ng (2005, 2006), Witte และชมิดท์ (1992), และคำอธิบายเผยแพร่ก่อนหน้านี้พันธุ์ (ดูบทนำ) ยังใช้ตามสิ่งก่อนหน้าอนุกรมวิธานพืชสกุลกัด (ดู tan & ng, 2005, 2006), การวินิจฉัย และอธิบายใน eidonomical fea tures สปีชีส์ใหม่ คำจำกัดความของกลุ่มสปีชีส์และ classifica-สเตรชันชนิดต่อแตนและ ng (2005) พันธุ์ใช้เป็นตัวแปรการวินิจฉัย 'phyloge - พันธุ์ netic แนวความคิด' (nixon & วีลเลอร์ 1990)
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