To eat or get heat: Behavioral trade-offs between thermoregulation and feeding in gregarious necrophagous larvae

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F18%3A43911262" target="_blank" >RIV/62156489:43210/18:43911262 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1111/1744-7917.12465" target="_blank" >https://doi.org/10.1111/1744-7917.12465</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/1744-7917.12465" target="_blank" >10.1111/1744-7917.12465</a>

Jazyk výsledku

angličtina

Název v původním jazyce

To eat or get heat: Behavioral trade-offs between thermoregulation and feeding in gregarious necrophagous larvae

Popis výsledku v původním jazyce

The thermoregulation behavior of Lucilia sericata larvae (Diptera: Calliphoridae), a necrophagous species that feeds on vertebrate cadavers, was investigated. These larvae require high heat incomes to develop, and can elevate temperatures by forming large aggregates. We hypothesized that L. sericata larvae should continue to feed at temperatures up to 38oC, which can be reached inside larval masses. Thermal regulation behavior such as movement between a hot food spot and colder areas was also postulated. The hypotheses were tested by tracking for 1h the activity of single, starved third instar larvae in a Petri dish containing one food spot (FS) that was heated to a constant temperature of 25oC, 34oC or 38oC with an ambient temperature of 25oC. The influence of previous conspecific activity in the food on larval behavior was also tested. The crops of larvae were dissected to monitor food content in the digestive systems. Based on relative crop measurements, larvae fed at all food temperatures, but temperature strongly affected larval behavior and kinematics. The total time spent by larvae in FS and the duration of each stay decreased at high FS temperature. Previous activity of conspecifics in the food slightly increased the time spent by larvae in FS and also decreased the average distance to FS. Therefore, necrophagous L. sericata larvae likely thermoregulate during normal feeding activities by adjusting to local fluctuations in temperature, particularly inside maggot masses. By maintaining a steady internal body temperature, larvae likely reduce their development time.

Název v anglickém jazyce

To eat or get heat: Behavioral trade-offs between thermoregulation and feeding in gregarious necrophagous larvae

Popis výsledku anglicky

The thermoregulation behavior of Lucilia sericata larvae (Diptera: Calliphoridae), a necrophagous species that feeds on vertebrate cadavers, was investigated. These larvae require high heat incomes to develop, and can elevate temperatures by forming large aggregates. We hypothesized that L. sericata larvae should continue to feed at temperatures up to 38oC, which can be reached inside larval masses. Thermal regulation behavior such as movement between a hot food spot and colder areas was also postulated. The hypotheses were tested by tracking for 1h the activity of single, starved third instar larvae in a Petri dish containing one food spot (FS) that was heated to a constant temperature of 25oC, 34oC or 38oC with an ambient temperature of 25oC. The influence of previous conspecific activity in the food on larval behavior was also tested. The crops of larvae were dissected to monitor food content in the digestive systems. Based on relative crop measurements, larvae fed at all food temperatures, but temperature strongly affected larval behavior and kinematics. The total time spent by larvae in FS and the duration of each stay decreased at high FS temperature. Previous activity of conspecifics in the food slightly increased the time spent by larvae in FS and also decreased the average distance to FS. Therefore, necrophagous L. sericata larvae likely thermoregulate during normal feeding activities by adjusting to local fluctuations in temperature, particularly inside maggot masses. By maintaining a steady internal body temperature, larvae likely reduce their development time.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10616 - Entomology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Insect Science

ISSN

1672-9609

e-ISSN

—

Svazek periodika

25

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

883-893

Kód UT WoS článku

000444415000014

EID výsledku v databázi Scopus

2-s2.0-85024406948