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Santos FM, Pescinelli RA, Pantaleão JAF, Costa RC. Relative growth, morphological sexual maturity, heterochely, and handedness in Panopeus occidentalis (Brachyura, Panopeidae). INVERTEBR REPROD DEV 2018. [DOI: 10.1080/07924259.2017.1415987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Fernanda Monchelato Santos
- Laboratory of Biology of Marine and Freshwater Shrimp (LABCAM), Faculty of Sciences, Department of Biological Sciences, São Paulo State University (UNESP), São Paulo, Brazil
| | - Régis Augusto Pescinelli
- Laboratory of Biology of Marine and Freshwater Shrimp (LABCAM), Faculty of Sciences, Department of Biological Sciences, São Paulo State University (UNESP), São Paulo, Brazil
| | - João Alberto Farinelli Pantaleão
- Laboratory of Biology of Marine and Freshwater Shrimp (LABCAM), Faculty of Sciences, Department of Biological Sciences, São Paulo State University (UNESP), São Paulo, Brazil
- Department of Environmental Engineering, Federal University of Triângulo Mineiro (UFTM), Uberaba, Brazil
| | - Rogério Caetano Costa
- Laboratory of Biology of Marine and Freshwater Shrimp (LABCAM), Faculty of Sciences, Department of Biological Sciences, São Paulo State University (UNESP), São Paulo, Brazil
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Copatti CE, Legramanti RP, Trevisan A, Santos S. Method of capture and population structure of Aegla georginae Santos and Jara, 2013 (Decapoda: Anomura: Aeglidae) in a tributary of the Ibicuí River in southern Brazil. BRAZ J BIOL 2016; 76:1035-1042. [PMID: 27166567 DOI: 10.1590/1519-6984.07815] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Accepted: 07/28/2015] [Indexed: 11/22/2022] Open
Abstract
In the current study, we investigated population aspects of Aegla georginae in the Ibicuí River Basin by considering different capture methods and the implication of these data in the analysis of population dynamics. We sampled 1774 individuals: 1259 males (21 and 97 juveniles and 1029 and 113 adults in trap and handnet, respectively), 512 females (05 and 140 juveniles, 184 and 64 adults, and 81 and 38 ovigerous in trap and handnet, respectively) and 03 unsexed individuals (02 and 01 in trap and handnet, respectively). The frequency distribution in size classes shows a bimodal model for both sexes. The carapace length (CL) in males and females varied from 3.11 to 26.00 and 3.73 to 22.36 mm, respectively. Males presented significantly larger sizes than females. The relative abundance between males and females was significantly different from 1:1 with more males than females in most sampling periods (p < 0.05) when considering the grouped data (handnet + trap) and trap captures, but followed the expected ratio in most months when considering individuals sampled only with handnet (p > 0.05). Juveniles were recorded in all seasons, and reproduction occurs throughout the year. The population structure is similar to the model known for aeglids, and the capture methods affected the analysis of A. georginae, where the grouped data and trap captures presented greater abundance of individuals than handnet and males predominate in the larger size classes, and females in the intermediary size classes. Therefore, an integrated view of the capture methods is the best model for studying the population dynamics of aeglids.
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Affiliation(s)
- C E Copatti
- Programa de Pós-graduação em Diversidade Animal, Instituto de Biologia, Universidade Federal da Bahia - UFBA, Campus de Ondina, Rua Barão de Geremoabo, 147, CEP 40170-290, Salvador, BA, Brazil
| | - R P Legramanti
- Programa de Pós-graduação em Biodiversidade Animal, Universidade Federal de Santa Maria - UFSM, Avenida Roraima, 1000, Cidade Universitária, Camobi, CEP 97105-900, Santa Maria, RS, Brazil
| | - A Trevisan
- Departamento de Ciências Biológicas, Universidade Alto Vale do Rio Do Peixe - UNIARP, Rua Victor Baptista Adami, 800, Centro, CEP 89500-000, Caçador, SC, Brazil
| | - S Santos
- Programa de Pós-graduação em Biodiversidade Animal, Universidade Federal de Santa Maria - UFSM, Avenida Roraima, 1000, Cidade Universitária, Camobi, CEP 97105-900, Santa Maria, RS, Brazil
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