Tenebrio beetles use magnetic inclination compass

VÁCHA, Martin, Dana DRŠTKOVÁ a Tereza PŮŽOVÁ. Tenebrio beetles use magnetic inclination compass. Naturwissenschaften. 2008, roč. 95, č. 8, s. 761-765. ISSN 0028-1042.

Základní údaje

• Originální název: Tenebrio beetles use magnetic inclination compass
• Název česky: Potemník moučný používá inklinační magnetický kompas.
• Autoři: VÁCHA, Martin (203 Česká republika, garant), Dana DRŠTKOVÁ (203 Česká republika) a Tereza PŮŽOVÁ (203 Česká republika).
• Vydání: Naturwissenschaften, 2008, 0028-1042.

Další údaje

• Originální jazyk: angličtina
• Typ výsledku: Článek v odborném periodiku
• Obor: 30105 Physiology
• Stát vydavatele: Česká republika
• Utajení: není předmětem státního či obchodního tajemství
• Impakt faktor: Impact factor: 2.126
• Kód RIV: RIV/00216224:14310/08:00024671
• Organizační jednotka: Přírodovědecká fakulta
• UT WoS: 000257395800010
• Klíčová slova anglicky: Insect Tenebrio Magnetoreception Compass Inclination
• Příznaky: Mezinárodní význam, Recenzováno

Anotace

Animals that guide directions of their locomotion or their migration routes by the lines of the geomagnetic field use either polarity or inclination compasses to determine the field polarity (the north or south direction). Distinguishing the two compass types is a guideline for estimation of the molecular principle of reception and has been achieved for a number of animal groups, with the exception of insects. A standard diagnostic method to distinguish a compass type is based on reversing the vertical component of the geomagnetic field, which leads to the opposite reactions of animals with two different compass types. In the present study, adults of the mealworm beetle Tenebrio molitor were tested by means of a two-step laboratory test of magnetoreception. Beetles that were initially trained to memorize the magnetic position of the light source preferred, during the subsequent test, this same direction, pursuant geomagnetic cues only. In the following step, the vertical component was reversed between the training and the test. The beetles significantly turned their preferred direction by 180 degrees. Our results brought until then unknown, original findings that insects, represented here by the Tenebrio molitor species, use - in contrast to another previously researched Arthropod, spiny lobster - the inclination compass.

Anotace česky

Animals that guide directions of their locomotion or their migration routes by the lines of the geomagnetic field use either polarity or inclination compasses to determine the field polarity (the north or south direction). Distinguishing the two compass types is a guideline for estimation of the molecular principle of reception and has been achieved for a number of animal groups, with the exception of insects. A standard diagnostic method to distinguish a compass type is based on reversing the vertical component of the geomagnetic field, which leads to the opposite reactions of animals with two different compass types. In the present study, adults of the mealworm beetle Tenebrio molitor were tested by means of a two-step laboratory test of magnetoreception. Beetles that were initially trained to memorize the magnetic position of the light source preferred, during the subsequent test, this same direction, pursuant geomagnetic cues only. In the following step, the vertical component was reversed between the training and the test. The beetles significantly turned their preferred direction by 180 degrees. Our results brought until then unknown, original findings that insects, represented here by the Tenebrio molitor species, use - in contrast to another previously researched Arthropod, spiny lobster - the inclination compass.

Návaznosti

• GA206/05/0911, projekt VaV: Název: Analýza magnetorecepčního chování laboratorních druhů hmyzu

Investor: Grantová agentura ČR, Analýza magnetorecepčního chování laboratorních druhů hmyzu

• GC206/07/J041, projekt VaV: Název: Neurální podstata magnetorecepce hmyzu.

Investor: Grantová agentura ČR, Neurální podstata magnetorecepce hmyzu

• MSM0021622416, záměr: Název: Diverzita biotických společenstev a populací: kauzální analýza variability v prostoru a čase

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Diverzita biotických společenstev: kauzální analýza variability v prostoru a čase