The ecological response of insectivorous bats to coastal lagoon degradation

EXPERIMENTAL STUDY ON THE ENERGY REDUCTION OF A SOLITARY WAVE USING A SAND DUNE-COASTAL LAGOON SYSTEM

Journal of Japan Society of Civil Engineers Ser B1 (Hydraulic Engineering) ◽

10.2208/jscejhe.74.5_i_1231 ◽

2018 ◽

Vol 74 (5) ◽

pp. I_1231-I_1236

Author(s):

T. L. C. VINODH ◽

Norio TANAKA

Keyword(s):

Experimental Study ◽

Solitary Wave ◽

Coastal Lagoon ◽

Sand Dune ◽

Energy Reduction ◽

Lagoon System

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Summer habitat use and response to food patches by insectivorous bats in a desert community

10.22215/etd/1979-12349 ◽

1979 ◽

Author(s):

Gary Bell

Keyword(s):

Habitat Use ◽

Insectivorous Bats

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ECOLOGICAL RESPONSE TO ENVIRONMENTAL CHANGE: INSIGHTS FROM THE MIOCENE SMALL-MAMMAL RECORD OF SOUTHERN CALIFORNIA

10.1130/abs/2017am-299096 ◽

2017 ◽

Author(s):

Tara M. Smiley ◽

◽

Molly Moroz ◽

Catherine Badgley ◽

Thure Cerling

Keyword(s):

Environmental Change ◽

Small Mammal ◽

Southern California ◽

Ecological Response ◽

Response To Environmental Change

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Elevated CYP1A expression detected in pinfish collected from a coastal lagoon in the southern Texas Gulf Coast: indicative of exposure to microplastics or pollutants?

Environmental Science and Pollution Research ◽

10.1007/s11356-021-14351-1 ◽

2021 ◽

Author(s):

Stephanie DuBois ◽

Brittney Lacy ◽

Abdullah Faiz Rahman ◽

Md Saydur Rahman

Keyword(s):

Coastal Lagoon ◽

Gulf Coast ◽

Texas Gulf Coast

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Boat Noise and Black Drum Vocalizations in Mar Chiquita Coastal Lagoon (Argentina)

Journal of Marine Science and Engineering ◽

10.3390/jmse9010044 ◽

2021 ◽

Vol 9 (1) ◽

pp. 44

Author(s):

Maria Ceraulo ◽

María Paz Sal Moyano ◽

Fernando Jose Hidalgo ◽

María Cielo Bazterrica ◽

Salvatore Mazzola ◽

...

Keyword(s):

Fish Species ◽

Coastal Lagoon ◽

Acoustic Method ◽

Potential Effect ◽

Reproductive Period ◽

Anthropogenic Noise ◽

Marine Biota ◽

Call Rate ◽

Noise Frequency ◽

Passive Acoustic

Human-generated underwater noise and its effect on marine biota is recognized as an important issue. Boat noise can affect the communication success of fish species that use sounds for spawning purposes. During the reproductive period, males of the black drum Pogonias spp. produce calls ranging from 90 Hz to 300 Hz. In the Mar Chiquita coastal lagoon (Buenos Aires, Argentina), Pogonias courbina is one of the primary fishing species. Although no regulation is directly applied to protect it, a ban protects the reproductive period of other fish species during weekdays. Here, we investigated the potential effect of boat noise on P. courbina vocalizations through a passive acoustic method. Acoustic data were collected, and P. courbina calls were identified and counted. The files with boat noise passages were categorized into classes according to their noise frequency range (A = below 700 Hz, B = over 700 Hz, and C = below and above 700 Hz). The fish call rate was lower in files where boat noise overlapped the fish call frequency (Classes A and C). Only boat noise from Class C was significantly reduced during days with the active fishing ban. These results suggest that anthropogenic noise may affect the P. courbina call rate and underline the importance of including the evaluation of anthropogenic noise in the current management of the area.

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Social calls influence the foraging behavior in wild big-footed myotis

Frontiers in Zoology ◽

10.1186/s12983-020-00384-8 ◽

2021 ◽

Vol 18 (1) ◽

Author(s):

Dongge Guo ◽

Jianan Ding ◽

Heng Liu ◽

Lin Zhou ◽

Jiang Feng ◽

...

Keyword(s):

Current Knowledge ◽

Light Trapping ◽

Low Frequency ◽

Food Competition ◽

Insectivorous Bats ◽

Insect Abundance ◽

Social Calls ◽

Abundance And Diversity ◽

Open Question ◽

Free Ranging

Abstract Background Why a variety of social animals emit foraging-associated calls during group foraging remains an open question. These vocalizations may be used to recruit conspecifics to food patches (i.e. food advertisement hypothesis) or defend food resources against competitors (food defence hypothesis), presumably depending on food availability. Insectivorous bats rely heavily on vocalizations for navigation, foraging, and social interactions. In this study, we used free-ranging big-footed myotis (Myotis macrodactylus Temminck, 1840) to test whether social calls produced in a foraging context serve to advertise food patches or to ward off food competitors. Using a combination of acoustic recordings, playback experiments with adult females and dietary monitoring (light trapping and DNA metabarcoding techniques), we investigated the relationship between insect availability and social vocalizations in foraging bats. Results The big-footed myotis uttered low-frequency social calls composed of 7 syllable types during foraging interactions. Although the dietary composition of bats varied across different sampling periods, Diptera, Lepidoptera, and Trichoptera were the most common prey consumed. The number of social vocalizations was primarily predicted by insect abundance, insect species composition, and echolocation vocalizations from conspecifics. The number of conspecific echolocation pulses tended to decrease following the emission of most social calls. Feeding bats consistently decreased foraging attempts and food consumption during playbacks of social calls with distinctive structures compared to control trials. The duration of flight decreased 1.29–1.96 fold in the presence of social calls versus controls. Conclusions These results support the food defence hypothesis, suggesting that foraging bats employ social calls to engage in intraspecific food competition. This study provides correlative evidence for the role of insect abundance and diversity in influencing the emission of social calls in insectivorous bats. Our findings add to the current knowledge of the function of social calls in echolocating bats.

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