Gut content metabarcoding of three widespread Iberian ant‐eating spiders reveals specialisation on the same abundant harvester ants

2021 ◽  
Author(s):  
David Ortiz ◽  
Lenka Petráková Dušátková ◽  
Stano Pekár
Keyword(s):  
Harvester Ants ◽  
Gut Content ◽  
Ant Eating

scholarly journals Avoiding being stung or bitten – prey capture behaviors of the ant-eating Texas horned lizard (Phrynosoma cornutum)

Biology Open ◽  
2021 ◽  
Vol 10 (3) ◽  
Author(s):  
Ismene Fertschai ◽  
Wade C. Sherbrooke ◽  
Matthias Ott ◽  
Boris P. Chagnaud
Keyword(s):  
High Speed ◽  
Prey Capture ◽  
Harvester Ants ◽  
Phrynosoma Cornutum ◽  
Video Recordings ◽  
Directional Movement ◽  
Plasma Factor ◽  
Ant Venom ◽  
Horned Lizards ◽  
Ant Eating

ABSTRACT Horned lizards (Phrynosoma) are specialized predators, including many species that primarily feed on seed harvester ants (Pogonomyrmex). Harvester ants have strong mandibles to husk seeds or defensively bite, and a venomous sting. Texas horned lizards possess a blood plasma factor that neutralizes harvester ant venom and produce copious mucus in the pharynx and esophagus, thus embedding and incapacitating swallowed ants. We used high-speed video recordings to investigate complexities of their lingual prey capture and handling behavior. Lizards primarily strike ants at their mesosoma (thorax plus propodeum of abdomen). They avoid the head and gaster, even if closer to the lizard, and if prey directional movement is reversed. Orientation of captured ants during retraction is with head first (rostral), thus providing initial mucus coating of the mandibles. Prey capture accuracy and precise handling illustrates the specificity of adaptations of horned lizards in avoiding harm, and the challenges lizards face when feeding on dangerous prey.

Analisis Isi Lambung Ikan Selais Terang Bulan (Kryptopterus bicirrhis, Valenciennes 1840) Di Desa Rantau Kasih Sungai Kampar Kiri Propinsi Riau

Biospecies ◽  
2018 ◽  
pp. 57-63
Author(s):  
Ermi Yeni ◽  
Roza Elvyra
Keyword(s):  
Content Analysis ◽  
Gut Content Analysis ◽  
Gut Content ◽  
Additional Food ◽  
Male And Female ◽  
Carnivorous Fish ◽  
Supplementary Food ◽  
Main Food

The study on gut content of Selais Terang Bulan fish (Kryptopterus bicirrhis) in Rantau Kasih village Kampar Kiri river was conducted from Februari- April 2017. The purpose of this study was to know about gut content of Selais Terang Bulan fish which was categorized as main food, supplementary food and additional food. The analysis is done based on the instruction of Natardjan and Jhingran (1961). The gut content was analized using the Index of preponderance.  The result revealed that  the main food of  Selais Terang Bulan fish in Rantau Kasih village is adult Arthropoda with IP value (78.85%), and supplementary food is caterpillar (25.15%). Male and female fishes at have main food of adult Arthropoda with different percentages are (82.81%) male and female (71.32%). Based on the gut content analysis of Selais Terang Bulan fish was a carnivorous fish.

How Patrollers Set Foraging Direction in Harvester Ants

2007 ◽  
Vol 170 (6) ◽  
pp. 943
Author(s):  
Michael J. Greene ◽  
Gordon
Keyword(s):  
Harvester Ants

scholarly journals Predation on Drosophila suzukii within Hedges in the Agricultural Landscape

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 305
Author(s):  
Alexandra Siffert ◽  
Fabian Cahenzli ◽  
Patrik Kehrli ◽  
Claudia Daniel ◽  
Virginie Dekumbis ◽  
...  
Keyword(s):  
Agricultural Landscape ◽  
Vital Role ◽  
Agricultural Landscapes ◽  
Gut Content ◽  
Drosophila Suzukii ◽  
Natural Habitats ◽  
Host Fruit ◽  
Molecular Gut Content Analysis ◽  
Wild Fruits ◽  
Diverse Community

The invasive Drosophila suzukii feeds and reproduces on various cultivated and wild fruits and moves between agricultural and semi-natural habitats. Hedges in agricultural landscapes play a vital role in the population development of D. suzukii, but also harbor a diverse community of natural enemies. We investigated predation by repeatedly exposing cohorts of D. suzukii pupae between June and October in dry and humid hedges at five different locations in Switzerland. We sampled predator communities and analyzed their gut content for the presence of D. suzukii DNA based on the COI marker. On average, 44% of the exposed pupae were predated. Predation was higher in dry than humid hedges, but did not differ significantly between pupae exposed on the ground or on branches and among sampling periods. Earwigs, spiders, and ants were the dominant predators. Predator communities did not vary significantly between hedge types or sampling periods. DNA of D. suzukii was detected in 3.4% of the earwigs, 1.8% of the spiders, and in one predatory bug (1.6%). While the molecular gut content analysis detected only a small proportion of predators that had fed on D. suzukii, overall predation seemed sufficient to reduce D. suzukii populations, in particular in hedges that provide few host fruit resources.

scholarly journals Comparative gut content analysis of invasive mosquitofish from Italy and Spain

2021 ◽  
Author(s):  
Sara Pirroni ◽  
Laura Pennafort Dezen ◽  
Francesco Santi ◽  
Rüdiger Riesch
Keyword(s):  
Content Analysis ◽  
Gut Content Analysis ◽  
Gut Content

Detecting Specific Resource Use by Drosophila suzukii (Diptera: Drosophilidae) Using Gut Content Analysis

2018 ◽  
Vol 111 (3) ◽  
pp. 1496-1500 ◽  
Author(s):  
Lauren M Diepenbrock ◽  
Jonathan G Lundgren ◽  
Tim L Sit ◽  
Hannah J Burrack
Keyword(s):  
Content Analysis ◽  
Resource Use ◽  
Gut Content Analysis ◽  
Gut Content ◽  
Drosophila Suzukii
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