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Issue: Vol. 5569 No. 3: 15 Jan. 2025
Type: Article
Published: 2025-01-15
DOI: 10.11646/zootaxa.5569.3.9
Page range: 541-548
Abstract views: 41
PDF downloaded: 6

Morphological variation in the postabdomen of Camptocercus dadayi Stingelin, 1913 (Cladocera: Anomopoda: Chydoridae)

Laboratório de Limnologia; Universidade Federal do Maranhão; Campus de Chapadinha; BR- 222; KM 04; S/N; Boa Vista; 65500- 000; Chapadinha; MA; Brazil; Programa de Pós-Graduação em Ciências Ambientais; Universidade Federal do Maranhão - UFMA; BR 222 km 4; s/n; bairro Boa Vista; Chapadinha; MA; Brazil
Laboratório de Taxonomia Animal; Instituto de Biociências; Universidade Federal de Jataí – UFJ; BR 364 km 195 n°3800; CEP 75801-615; Jataí; GO; Brazil
Laboratório de Taxonomia Animal; Instituto de Biociências; Universidade Federal de Jataí – UFJ; BR 364 km 195 n°3800; CEP 75801-615; Jataí; GO; Brazil
Universidad del Magdalena; Grupo de Investigación en Biodiversidad y Ecología Aplicada. Santa Marta; Magdalena; Colombia.
Laboratório de Limnologia; Universidade Federal do Maranhão; Campus de Chapadinha; BR- 222; KM 04; S/N; Boa Vista; 65500- 000; Chapadinha; MA; Brazil; Programa de Pós-Graduação em Ciências Ambientais; Universidade Federal do Maranhão - UFMA; BR 222 km 4; s/n; bairro Boa Vista; Chapadinha; MA; Brazil; Programa de Pós-Graduação em Biodiversidade e Conservação; Universidade Federal do Maranhão - UFMA; Av. dos Portugueses 1966; Cidade Universitária Dom Delgado; CEP 65080-805; São Luís; MA; Brazil
Crustacea Branchiopoda Biogeography Neotropical Region Taxonomy

Abstract

We investigated the morphological variations of Camptocercus dadayi Stingelin, 1913 in different populations across South America (Argentina, Brazil, Chile, and Colombia) under optical microscope. Significant variations were observed in the morphology of the postabdomen, especially in the patterns of the marginal denticles, lateral fascicles and terminal claw. The variations follow a geographic pattern throughout South America. These variations suggest morphologic diversity in the species, highlighting the importance of variation studies for the accurate identification and delimitation of species within Camptocercus.

 

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