Life history of five small minnow mayflies (Ephemeroptera: Baetidae) in a small tropical stream on the Caribbean slope of Costa Rica

Vásquez, Danny; Flowers, Wills; Springer, Mónika

doi:10.1080/01650420903083096

Cited by 17 publications

(9 citation statements)

References 17 publications

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“…The first report documenting this development strategy came from Jackson and Sweeney (1995), where most of the Costa Rica mayflies were characterized by a multivoltine life cycle. In the same area, Vásquez, Wills-Flowers and Springer (2009) reported the same life cycle patterns for two Baetidae species.…”

supporting

confidence: 53%

“…For each mayfly species, the width of the head capsule on each nymph was measured, using a dissecting microscope with an ocular micrometer (at 40x magnification). This method is the most commonly used technique to determine the developmental stage of nymphs of mayfly species (Brittain, 1982;Vásquez et al, 2009) and head capsule width has been found to be the best measure to explain life history patterns in similar studies (Epele et al, 2011).…”

Section: Methodsmentioning

confidence: 99%

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Life cycles of dominant mayflies (Ephemeroptera) on a torrent of the high Bolivian Andes

Molina

Puliafico²

2016

RBT

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Abstract:The mayflies of the temperate and cold zones have well-synchronized life cycles, distinct cohorts, short emergence and flight periods. In contrast, aquatic insects from the tropical zones are characterized by multivoltine life cycles, "non-discernible cohorts" and extended flight periods throughout the year. This report is the first observation of life cycle patterns made of two species of mayflies on a torrent in the high elevation Bolivian Andes. The samples were taken from four sites and four periods during a hydrological season. The life cycle of each species was examined using size-class frequency analysis and a monthly modal progression model (von Bertalanffy's model) to infer the life cycle synchrony type. These first observations showed a moderately synchronized univoltine life cycle for Andesiops peruvianus (Ulmer, 1920), whereas Meridialaris tintinnabula Pescador and Peters (1987), had an unsynchronized multivoltine life cycle. These results showed that the generalization of all aquatic insects as unsynchronized multivoltine species in the Andean region may not be entirely accurate since there is still a need to further clarify the life cycle patterns of the wide variety of aquatic insects living in this high elevation tropical environment. Rev. Biol. Trop. 64 (1): 275-287. Epub 2016 March 01.

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supporting

confidence: 53%

Section: Methodsmentioning

confidence: 99%

Life cycles of dominant mayflies (Ephemeroptera) on a torrent of the high Bolivian Andes

Molina

Puliafico²

2016

RBT

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“…On the other hand, the site's average elevation is 514,4 ± 81,3 m and has strong inclines in most of its area [ 15 ]. The forest composition varies from secondary to mature forests, including open areas formed by the Sucio river [ 15 – 17 ]. Also present are various important tributaries like Quebrada González that have a constant flow throughout the year, making the water source abundant in the sector [ 18 , 19 ].…”

Section: Methodsmentioning

confidence: 99%

Diversity of Aerobic Bacteria Isolated from Oral and Cloacal Cavities from Free-Living Snakes Species in Costa Rica Rainforest

Artavia‐León

Romero-Guerrero

Sancho-Blanco

et al. 2017

International Scholarly Research Notices

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Costa Rica has a significant number of snakebites per year and bacterial infections are often complications in these animal bites. Hereby, this study aims to identify, characterize, and report the diversity of the bacterial community in the oral and cloacal cavities of venomous and nonvenomous snakes found in wildlife in Costa Rica. The snakes where captured by casual encounter search between August and November of 2014 in the Quebrada González sector, in Braulio Carrillo National Park. A total of 120 swabs, oral and cloacal, were taken from 16 individuals of the Viperidae and Colubridae families. Samples were cultured on four different media at room temperature. Once isolated in pure culture, colonies were identified with the VITEK® 2C platform (bioMérieux). In order to test the identification provided on environmental isolates, molecular analyses were conducted on 27 isolates of different bacterial species. Specific 16S rDNA PCR-mediated amplification for bacterial taxonomy was performed, then sequenced, and compared with sequences of Ribosomal Database Project (RDP). From 90 bacterial isolates, 40 different bacterial species were identified from both oral and cloacal swabs. These results indicate the diversity of opportunistic pathogens present and their potential to generate infections and zoonosis in humans.

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“…Streams draining humid tropical rainforests often experience unpredictable hydrological events, which may represent sources of stress to aquatic populations. This is especially true for tropical mayflies, which may live relatively long-periods in the streams (range from 26 to 165 days, Sweeney, Jackson & Funk, 1995) compared to their lifespan as adults (range from 3 to 6 days, Vásquez, Flowers & Springer, 2009). Streams at La Selva Biological Station (LSBS) offer an excellent opportunity to assess how environmental stressors influence aquatic biota, as they show high interannual variability in their environmental variables (Ramírez, Pringle & Douglas, 2006;Small et al, 2012;Gutiérrez-Fonseca, Ramírez & Pringle, 2018).…”

Section: Introductionmentioning

confidence: 99%

Mayfly emergence production and body length response to hydrology in a tropical lowland stream

Gutiérrez‐Fonseca

Ramírez

2020

PeerJ

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Background Hydrological impacts on aquatic biota have been assessed in numerous empirical studies. Aquatic insects are severely affected by population declines and consequent diversity loss. However, many uncertainties remain regarding the effects of hydrology on insect production and the consequences of energy transfer to the terrestrial ecosystem. Likewise, sublethal effects on insect morphology remain poorly quantified in highly variable environments. Here, we characterized monthly fluctuation in benthic and emerged biomass of Ephemeroptera in a tropical lowland stream. We quantified the proportion of mayfly production that emerges into the riparian forest. We also examined the potential morphological changes in Farrodes caribbianus (the most abundant mayfly in our samples) due to environmental stress. Methods We collected mayflies (nymphs and adults) in a first-order stream in Costa Rica. We compared benthic and adult biomass from two years’ worth of samples, collected with a core sampler (0.006 m2) and a 2 m2-emergence trap. The relationship between emergence and annual secondary production (E/P) was used to estimate the Ephemeroptera production that emerged as adults. A model selection approach was used to determine the relationship between environmental variables that were collected monthly and the emergent biomass. To determine potential departures from perfect bilateral symmetry, we evaluated the symmetry of two morphological traits (forceps and forewing) of F. caribbianus adults. We used Spearman’s rank correlation coefficients (ρ) to examine potential changes in adult body length as a possible response to environmental stress. Results Benthic biomass was variable, with peaks throughout the study period. However, peaks in benthic biomass did not lead to increases in mayfly emergence, which remained stable over time. Relatively constant mayfly emergence suggests that they were aseasonal in tropical lowland streams. Our E/P estimate indicated that approximately 39% and 20% (for 2002 and 2003, respectively) of the nymph production emerged as adults. Our estimated proportion of mayfly production transferred to terrestrial ecosystems was high relative to reports from temperate regions. We observed a strong negative response of F. caribbianus body length to increased hydrology (Spearman: ρ = −0.51, p < 0.001), while slight departures from perfect symmetry were observed in all traits. Conclusion Our two years study demonstrates that there was large temporal variability in mayfly biomass that was unrelated to hydrological fluctuations, but potentially related to trophic interactions (e.g., fish predation). Body length was a good indicator of environmental stress, which could have severe associated costs for mayfly fitness in ecosystems with high temporal variation. Our results highlight the complex ecological and evolutionary dynamics of tropical aquatic insects, and the intricate connection between aquatic and terrestrial ecosystems.

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Life history of five small minnow mayflies (Ephemeroptera: Baetidae) in a small tropical stream on the Caribbean slope of Costa Rica

Cited by 17 publications

References 17 publications

Life cycles of dominant mayflies (Ephemeroptera) on a torrent of the high Bolivian Andes

Life cycles of dominant mayflies (Ephemeroptera) on a torrent of the high Bolivian Andes

Diversity of Aerobic Bacteria Isolated from Oral and Cloacal Cavities from Free-Living Snakes Species in Costa Rica Rainforest

Mayfly emergence production and body length response to hydrology in a tropical lowland stream

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