New records of the troglobitic Hyalella veredae Cardoso &amp;amp; Bueno, 2014 (Crustacea, Amphipoda, Hyalellidae) from Minas Gerais caves, southeast Brazil, with notes on its natural history

Bichuette, Maria Elina; Resende, Leonardo Palloni Accetti; Zepon, Tamires; Bueno, Alessandra Angélica de Pádua

doi:10.15560/17.1.115

Cited by 4 publications

(1 citation statement)

References 29 publications

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“…These conditions could generate changes in dominance, diversity, reproductive strategies, and their relationship with physical and chemical environmental variables (Roldán-Pérez 2016 ; Stepanian et al 2020 ), which determine the species permanence and survival strategies as a function of the quality of their environment (Nnoli et al 2019 ; Zipkin et al 2017 ). Other research identifies changes in the distribution of organisms that can represent a threat to the species of Hyalella genus, depending on the number of individuals and morphological size modifications (Zepon et al 2021 ). The quantification of Hyalella organisms also helps to identify space–time trends at biological, ecological, and environmental levels (Bastos et al 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Automated software for counting and measuring Hyalella genus using artificial intelligence

Pineda-Alarcón,

Zuluaga,

Ruíz

et al. 2023

Environ Sci Pollut Res

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Amphipods belonging to the Hyalella genus are macroinvertebrates that inhabit aquatic environments. They are of particular interest in areas such as limnology and ecotoxicology, where data on the number of Hyalella individuals and their allometric measurements are used to assess the environmental dynamics of aquatic ecosystems. In this study, we introduce HyACS, a software tool that uses a model developed with the YOLOv3’s architecture to detect individuals, and digital image processing techniques to extract morphological metrics of the Hyalella genus. The software detects body metrics of length, arc length, maximum width, eccentricity, perimeter, and area of Hyalella individuals, using basic imaging capture equipment. The performance metrics indicate that the model developed can achieve high prediction levels, with an accuracy above 90% for the correct identification of individuals. It can perform up to four times faster than traditional visual counting methods and provide precise morphological measurements of Hyalella individuals, which may improve further studies of the species populations and enhance their use as bioindicators of water quality.

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Section: Introductionmentioning

confidence: 99%

Automated software for counting and measuring Hyalella genus using artificial intelligence

Pineda-Alarcón,

Zuluaga,

Ruíz

et al. 2023

Environ Sci Pollut Res

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South America stygobiont crustaceans: a new species of Hyalellidae (Amphipoda) and new reports of Stygocarididae (Anaspidacea) and Protojaniridae (Isopoda) from Calingasta Valley, Pre-Andean region, San Juan, Argentina

Peralta

Verónica²

2023

Zootaxa

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We describe one new eyeless Hyalella species, H. cuyana n. sp., from the hyporheic zone of Calingasta River, San Juan Province, Argentina. Hyalella cuyana n. sp. differs morphologically from its stygobiont congeners by characters of antennae (both antennae subequal in size; aesthetascs elongated); coxal plate 4 (posteriorly without excavation); epimeral plates 1–3 (rounded posterodistally); male gnathopod 2 propodus (almond-shaped, ovate, palm slope strongly oblique); and pleopods (inner ramus reduced to 2–3 articles). We provide a detailed morphological comparison between stygobiont and stygophile Hyalella species. We comment on the sympatry and new report of stygobiont Malacostraca species Parastygocaris andina and Cuyojanira sp. Severe environmental changes and significant decline of habitat quality recorded along the Calingasta River increase the risk of extinction for this vulnerable and endemic fauna. We recommend that the new Hyalella species should be listed as Critically Endangered (CR) in the IUCN categorization according to criteria B1a as it is only known from the type locality; and criteria B1b iii (continuing decline, observed, inferred in the quality of habitat).

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Ecological and reproductive biology of two sympatric species of Hyalella (Crustacea, Amphipoda, Hyalellidae) from southern Brazil

Limberger,

Rangel,

Graichen

et al. 2024

Iheringia, Sér. Zool.

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In this work, the population dynamics and reproductive aspects of two sympatric Hyalella species in a river spring were analyzed in the northwestern state of Rio Grande do Sul, Brazil. The samplings were performed by one person, for ten minutes and using a hand net for one-year period (March 2018 to April 2019) and transported to the laboratory. All individuals sampled were sexed, measured, and separated by cephalothorax length (CC) size classes. Hyalella gauchensis Streck & Castiglioni, 2017 was 22.7 times more frequent and showed significantly greater mean cephalothorax when compared to Hyalella longipropodus Limberger, Graichen & Castiglioni, 2021. Males had a larger body size (CC) than females, although they occur in smaller numbers in both species. The total frequency distribution in CC size classes was bimodal in males and juveniles, and polimodal in females of H. gauchensis. In H. longipropodus the distribution as bimodal in males, females and juveniles. Both H. gauchensis and H. longipropodus had their breeding season and recruitment during the colder seasons of the year (fall and winter, respectively). However, there was a seasonal temporal separation of the intensity peaks between the two species, which could indicate different strategies and/or evolutionary adaptations for their coexistence.

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New records of the troglobitic Hyalella veredae Cardoso & Bueno, 2014 (Crustacea, Amphipoda, Hyalellidae) from Minas Gerais caves, southeast Brazil, with notes on its natural history

Cited by 4 publications

References 29 publications

Automated software for counting and measuring Hyalella genus using artificial intelligence

Automated software for counting and measuring Hyalella genus using artificial intelligence

South America stygobiont crustaceans: a new species of Hyalellidae (Amphipoda) and new reports of Stygocarididae (Anaspidacea) and Protojaniridae (Isopoda) from Calingasta Valley, Pre-Andean region, San Juan, Argentina

Ecological and reproductive biology of two sympatric species of Hyalella (Crustacea, Amphipoda, Hyalellidae) from southern Brazil

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