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Volume 11
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10.3390/insects11070442
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Article

Distribution and Habitat Preferences of the Newly Rediscovered Telmatogeton magellanicus (Jacobs, 1900) (Diptera: Chironomidae) on Navarino Island, Chile

by
Felipe Lorenz Simões
1,2,*,
Tamara Contador-Mejías
3,4,
Javier Rendoll-Cárcamo
3,
Carolina Pérez-Troncoso
3,
Scott A. L. Hayward
5,
Edgar Turner
2 and
Peter Convey
1,*
1
British Antarctic Survey, Cambridge CB3 0ET, UK
2
Department of Zoology, University Museum of Cambridge, Cambridge CB2 1TN, UK
3
Sub-Antarctic Biocultural Conservation Program, Wankara Sub-Antarctic and Antarctic Freshwater Ecosystems Laboratory, Universidad de Magallanes, Puerto Williams 6350000, Chile
4
Millennium Nucleus of Invasive Salmonids, INVASAL, Concepción 4030000, Chile
5
School of Biosciences, University of Birmingham, Birmingham B15 2TT, UK
*
Authors to whom correspondence should be addressed.
Insects 2020, 11(7), 442; https://doi.org/10.3390/insects11070442
Submission received: 23 June 2020 / Revised: 10 July 2020 / Accepted: 10 July 2020 / Published: 14 July 2020
(This article belongs to the Special Issue Polar Entomology)
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Abstract

The habitat of the intertidal flightless midge Telmatogeton magellanicus (Jacobs, 1900) is described for the first time from the northern coast of Navarino Island, Tierra del Fuego, Chile. Additionally, we report the first observations of adult behaviour in the wild. We delineate the species’ distribution across three tidal zones (high, mid and low), and identify substrate characteristics that favour the presence of the midge. The mid-tide zone was the key habitat utilized by T. magellanicus, with lower densities in the low-tide zone and no presence in the high-tide zone. There was a strong association between the presence of larvae and filamentous algae, especially Bostrychia spp. and, to a lesser extent, Ulva spp., as well as between larvae and the presence of larger, more stable boulders. As a result, the species’ overall distribution was widespread but patchy. We suggest that the main limiting factor is the relative humidity experienced in different habitats. One of the most striking features of the behavioural observations during data collection was the extremely active adults, which suggests high energy expenditure over a very short period of time. This may be due to the limited time available to find mates in a single low-tide period, when adults have about three hours after emerging from the pupa to complete mating and oviposition before inundation by the tide. The data presented here provide a baseline for future studies on this species’ ecology, phenology, physiology and general biology.
Keywords: algae; brachypterous; flightless; intertidal; life history; Magellanic; non-biting midge; polar; sub-Antarctic algae; brachypterous; flightless; intertidal; life history; Magellanic; non-biting midge; polar; sub-Antarctic

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MDPI and ACS Style

Lorenz Simões, F.; Contador-Mejías, T.; Rendoll-Cárcamo, J.; Pérez-Troncoso, C.; Hayward, S.A.L.; Turner, E.; Convey, P. Distribution and Habitat Preferences of the Newly Rediscovered Telmatogeton magellanicus (Jacobs, 1900) (Diptera: Chironomidae) on Navarino Island, Chile. Insects 2020, 11, 442. https://doi.org/10.3390/insects11070442

AMA Style

Lorenz Simões F, Contador-Mejías T, Rendoll-Cárcamo J, Pérez-Troncoso C, Hayward SAL, Turner E, Convey P. Distribution and Habitat Preferences of the Newly Rediscovered Telmatogeton magellanicus (Jacobs, 1900) (Diptera: Chironomidae) on Navarino Island, Chile. Insects. 2020; 11(7):442. https://doi.org/10.3390/insects11070442

Chicago/Turabian Style

Lorenz Simões, Felipe, Tamara Contador-Mejías, Javier Rendoll-Cárcamo, Carolina Pérez-Troncoso, Scott A. L. Hayward, Edgar Turner, and Peter Convey. 2020. "Distribution and Habitat Preferences of the Newly Rediscovered Telmatogeton magellanicus (Jacobs, 1900) (Diptera: Chironomidae) on Navarino Island, Chile" Insects 11, no. 7: 442. https://doi.org/10.3390/insects11070442

APA Style

Lorenz Simões, F., Contador-Mejías, T., Rendoll-Cárcamo, J., Pérez-Troncoso, C., Hayward, S. A. L., Turner, E., & Convey, P. (2020). Distribution and Habitat Preferences of the Newly Rediscovered Telmatogeton magellanicus (Jacobs, 1900) (Diptera: Chironomidae) on Navarino Island, Chile. Insects, 11(7), 442. https://doi.org/10.3390/insects11070442

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