Populations of Odontesthes (Teleostei: Atheriniformes) in the Andean region of Southern South America: body shape and hybrid individuals
Author
Conte-Grand, Cecilia
Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA), Universidad Nacional del Comahue – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bariloche, 8400 Río Negro, Argentina.
ceciliacontegrand@yahoo.com
Author
Sommer, Julie
School of Biological Sciences, University of Nebraska, Lincoln NE 68588, USA.
juliesommer@yahoo.com
Author
Ortí, Guillermo
The George Washington University, 2023 G Street NW, Washington DC 20052, USA.
guilleorti@gmail.com
Author
Cussac, Víctor
Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA), Universidad Nacional del Comahue – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bariloche, 8400 Río Negro, Argentina
cussacve@comahue-conicet.gob.ar
text
Neotropical Ichthyology
2015
2015-03-31
13
1
137
150
http://dx.doi.org/10.1590/1982-0224-20130094
journal article
10.1590/1982-0224-20130094
1982-0224
12718290
Table 2. Meristic and morphological characters applied to the identification (following Dyer, 2006) of 45 individuals from Lake Pellegrini. Results from mtDNA analysis are compared with identification based on taxonomic key: origin of first dorsal fin over posterior half of pelvic fin (O. hatcheri) or anterior to anus and posterior to pelvic fin (O. bonariensis), number of dorsal scale rows between lateral lines>12 (O. hatcheri) or <11(O. bonariensis); number of gill rakes on the lower arm of first branchial arch, 21-27 (O. hatcheri) or>30 (32-38) (O. bonariensis); upper jaw prognathous (O. hatcheri) or lower jaw prognathous in large specimens (O. bonariensis). N: number of specimens. In bold, the presumptive hybrids individuals identified on meristic and morphological characters, those are highlighted with * in Fig. 3).| Origin of first dorsal fin | Number of dorsal scale rows between lateral lines | Number of gill rakes on the lower arm of first branchial arch | Jaw prognathism | Species based on key (N) | Species based on mtDNA (N) |
|---|
| Over posterior half of pelvic fin | Anterior to anus and posterior to pelvic fin |
|---|
| X | 13 | 30 | upper | hybrid? | O. bonariensis |
|---|
| X | 12 | 29 | lower | hybrid? | - |
|---|
| X | 12 | 31 | no | hybrid? | O. bonariensis |
|---|
| X | 13 | 31 | upper | hybrid? | O. bonariensis |
|---|
| X | 12 | 28 | lower | hybrid? | O. bonariensis |
|---|
| X | 13 | 30 | lower | hybrid? | O. bonariensis |
|---|
| X | | 15 | 22 | upper | O. hatcheri | - |
|---|
| X | | 15 | 23 | no | O. hatcheri | O. hatcheri |
|---|
| X | | 15 | 23 | upper | O. hatcheri (2) | O. hatcheri |
|---|
| X | | 15 | 24 | no | O. hatcheri | O. hatcheri |
|---|
| X | | 15 | 24 | upper | O. hatcheri (4) | - |
|---|
| X | | 15 | 25 | upper | O. hatcheri (2) | O. hatcheri (2) |
|---|
| X | | 16 | 24 | upper | O. hatcheri (2) | O. hatcheri |
|---|
| X | | 16 | 25 | upper | O. hatcheri (4) | O. hatcheri (2) |
|---|
| X | | 16 | 26 | upper | O. hatcheri (2) | O. hatcheri |
|---|
| X | 13 | 27 | no | hybrid? | O. hatcheri |
|---|
| X | 14 | 24 | upper | hybrid? | - |
|---|
| X | 15 | 23 | upper | hybrid? (3) | O. hatcheri (2) |
|---|
| X | 15 | 25 | no | hybrid? | O. hatcheri |
|---|
| X | 16 | 24 | upper | hybrid? | O. hatcheri |
|---|
| X | 16 | 25 | upper | hybrid? | O. hatcheri |
|---|
| X | 15 | 22 | upper | hybrid? | O. hatcheri |
|---|
| X | 15 | 23 | upper | hybrid? (2) | - |
|---|
| X | 15 | 24 | upper | hybrid? | O. hatcheri |
|---|
| X | 15 | 25 | upper | hybrid? (2) | - |
|---|
| X | 16 | 22 | upper | hybrid? | O. hatcheri |
|---|
| X | 16 | 24 | upper | hybrid? (2) | - |
|---|
| X | 16 | 25 | upper | hybrid? | - |
|---|
| X | 17 | 24 | upper | hybrid? (2) | O. hatcheri |
|---|