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Redescriptions of Nereis oligohalina (Rioja, 1946) and N. garwoodi González-Escalante & Salazar-Vallejo, 2003 and description of N. confusa sp. n. (Annelida, Nereididae).

Conde-Vela VM, Salazar-Vallejo SI - Zookeys (2015)

Bottom Line: Nereis oligohalina (Rioja, 1946) was described from the Gulf of Mexico, but it has been considered a junior synonym of Nereis occidentalis Hartman, 1945, or regarded as a distinct species with an amphiamerican distribution.In order to clarify these uncertainties, Nereis oligohalina is redescribed based on specimens from the Mexican Gulf of Mexico, including a proposed neotype; further, Nereis garwoodi is redescribed including the selection of lectotype and paralectotypes, and Nereis confusa sp. n. is described with material from the Gulf of California.A key for the identification of similar species and some comments about speciation in nereidid polychaetes are also included.

View Article: PubMed Central - PubMed

Affiliation: El Colegio de la Frontera Sur, CONACYT, Departamento de Sistemática y Ecología Acuática, Chetumal, México.

ABSTRACT
Type material of several polychaete species described by Enrique Rioja from Mexican coasts are lost, and the current status of some species is doubtful. Nereis oligohalina (Rioja, 1946) was described from the Gulf of Mexico, but it has been considered a junior synonym of Nereis occidentalis Hartman, 1945, or regarded as a distinct species with an amphiamerican distribution. On the other hand, Nereis garwoodi González-Escalante & Salazar-Vallejo, 2003, described from Chetumal Bay, Caribbean coasts, could be confused with Nereis oligohalina. In order to clarify these uncertainties, Nereis oligohalina is redescribed based on specimens from the Mexican Gulf of Mexico, including a proposed neotype; further, Nereis garwoodi is redescribed including the selection of lectotype and paralectotypes, and Nereis confusa sp. n. is described with material from the Gulf of California. A key for the identification of similar species and some comments about speciation in nereidid polychaetes are also included.

No MeSH data available.


Related in: MedlinePlus

Nereisoligohalina. Non-type male A–C, F–J, N (ECOSUR–OH–P0761); non-type partially transformed male D, L–M (ECOSUR P2827); non-type partially transformed female E, K (ECOSUR P2827). A Whole specimen, dorsal view B Anterior end, dorsal view C Posterior end, dorsal view D, E Anterior ends, dorsal view F Parapodium 1, anterior view G Parapodium 6, anterior view H Parapodium 10, frontal view I Parapodium 18, anterior view J Parapodium 31, anterior view K Parapodium 10, anterior view L Parapodium 24, anterior view M Parapodium 52, anterior view N Sesquigomph natatory chaetae, parapodium 31. Scale bars: 1 mm (A, D–E); 0.5 mm (B); 0.2 mm (C); 0.1 mm (F–M); 10 μm (N).
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Figure 2: Nereisoligohalina. Non-type male A–C, F–J, N (ECOSUR–OH–P0761); non-type partially transformed male D, L–M (ECOSUR P2827); non-type partially transformed female E, K (ECOSUR P2827). A Whole specimen, dorsal view B Anterior end, dorsal view C Posterior end, dorsal view D, E Anterior ends, dorsal view F Parapodium 1, anterior view G Parapodium 6, anterior view H Parapodium 10, frontal view I Parapodium 18, anterior view J Parapodium 31, anterior view K Parapodium 10, anterior view L Parapodium 24, anterior view M Parapodium 52, anterior view N Sesquigomph natatory chaetae, parapodium 31. Scale bars: 1 mm (A, D–E); 0.5 mm (B); 0.2 mm (C); 0.1 mm (F–M); 10 μm (N).

Mentions: Figures 1, 2, 6A, D, J–L, O, Q


Redescriptions of Nereis oligohalina (Rioja, 1946) and N. garwoodi González-Escalante & Salazar-Vallejo, 2003 and description of N. confusa sp. n. (Annelida, Nereididae).

Conde-Vela VM, Salazar-Vallejo SI - Zookeys (2015)

Nereisoligohalina. Non-type male A–C, F–J, N (ECOSUR–OH–P0761); non-type partially transformed male D, L–M (ECOSUR P2827); non-type partially transformed female E, K (ECOSUR P2827). A Whole specimen, dorsal view B Anterior end, dorsal view C Posterior end, dorsal view D, E Anterior ends, dorsal view F Parapodium 1, anterior view G Parapodium 6, anterior view H Parapodium 10, frontal view I Parapodium 18, anterior view J Parapodium 31, anterior view K Parapodium 10, anterior view L Parapodium 24, anterior view M Parapodium 52, anterior view N Sesquigomph natatory chaetae, parapodium 31. Scale bars: 1 mm (A, D–E); 0.5 mm (B); 0.2 mm (C); 0.1 mm (F–M); 10 μm (N).
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4591595&req=5

Figure 2: Nereisoligohalina. Non-type male A–C, F–J, N (ECOSUR–OH–P0761); non-type partially transformed male D, L–M (ECOSUR P2827); non-type partially transformed female E, K (ECOSUR P2827). A Whole specimen, dorsal view B Anterior end, dorsal view C Posterior end, dorsal view D, E Anterior ends, dorsal view F Parapodium 1, anterior view G Parapodium 6, anterior view H Parapodium 10, frontal view I Parapodium 18, anterior view J Parapodium 31, anterior view K Parapodium 10, anterior view L Parapodium 24, anterior view M Parapodium 52, anterior view N Sesquigomph natatory chaetae, parapodium 31. Scale bars: 1 mm (A, D–E); 0.5 mm (B); 0.2 mm (C); 0.1 mm (F–M); 10 μm (N).
Mentions: Figures 1, 2, 6A, D, J–L, O, Q

Bottom Line: Nereis oligohalina (Rioja, 1946) was described from the Gulf of Mexico, but it has been considered a junior synonym of Nereis occidentalis Hartman, 1945, or regarded as a distinct species with an amphiamerican distribution.In order to clarify these uncertainties, Nereis oligohalina is redescribed based on specimens from the Mexican Gulf of Mexico, including a proposed neotype; further, Nereis garwoodi is redescribed including the selection of lectotype and paralectotypes, and Nereis confusa sp. n. is described with material from the Gulf of California.A key for the identification of similar species and some comments about speciation in nereidid polychaetes are also included.

View Article: PubMed Central - PubMed

Affiliation: El Colegio de la Frontera Sur, CONACYT, Departamento de Sistemática y Ecología Acuática, Chetumal, México.

ABSTRACT
Type material of several polychaete species described by Enrique Rioja from Mexican coasts are lost, and the current status of some species is doubtful. Nereis oligohalina (Rioja, 1946) was described from the Gulf of Mexico, but it has been considered a junior synonym of Nereis occidentalis Hartman, 1945, or regarded as a distinct species with an amphiamerican distribution. On the other hand, Nereis garwoodi González-Escalante & Salazar-Vallejo, 2003, described from Chetumal Bay, Caribbean coasts, could be confused with Nereis oligohalina. In order to clarify these uncertainties, Nereis oligohalina is redescribed based on specimens from the Mexican Gulf of Mexico, including a proposed neotype; further, Nereis garwoodi is redescribed including the selection of lectotype and paralectotypes, and Nereis confusa sp. n. is described with material from the Gulf of California. A key for the identification of similar species and some comments about speciation in nereidid polychaetes are also included.

No MeSH data available.


Related in: MedlinePlus