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פותח על ידי קלירמאש פתרונות בע"מ -
Red Anemone Guild Flowers as Focal Places for Mating and Feeding of Mediterranean Glaphyrid Beetles
Year:
2010
Authors :
הררי, אלי
;
.
Volume :
99
Co-Authors:

TAMAR KEASAR, GUIDO SABATINELLI, DENIS KEITH, AMOTS DAFNI, OFRIT SHAVIT, ASAPH ZYLBERTAL, AVI SHMIDA

Facilitators :
From page:
808
To page:
817
(
Total pages:
10
)
Abstract:

Several species of glaphyrid (Scarabaeoidea: Glaphyridae) beetles forage and mate on Mediterranean red bowl-shaped flowers. In red anemones and poppies in Israel, female beetles occupy only a subset of the flowers, do not aggregate, and are hidden below the petals. This raises the question of how males find their mates. In the present study, we investigated the hypothesis that males and females orient to similar plant-generated cues, thereby increasing their mate encounter prospects. Previous studies have demonstrated that beetle attraction to red models increases with display area. Choice tests with flowers and with models indicate that both male and female beetles prefer large displays. In anemones, beetles rest, feed, and mate mainly on male-phase flowers, which are larger than female-phase flowers. Poppies that contain beetles are larger than the population average. These findings support the hypothesis that males and females meet by orienting to large red displays. Corolla size correlates with pollen reward in both plant species, suggesting that visits to large flowers also yield foraging benefits. Male beetles often jump rapidly among adjacent flowers. By contrast to the preference for large flowers by stationary individuals, these jump sequences are random with respect to flower sex-phase (in anemone) and size (in poppy). They may enable males to detect females at close range. We hypothesize that males employ a mixed mate-searching strategy, combining orientation to floral signals and to female-produced cues. The glaphyrids' preference for large flowers may have selected for extraordinarily large displays within the ‘red anemone’ pollination guild of the Levant.

Note:
Related Files :
Anemone
beetle
Beetle pollination
Co-evolution
Coleoptera
Display size
Glaphyridae
insect behavior
Mate searching
עוד תגיות
תוכן קשור
More details
DOI :
https://doi.org/10.1111/j.1095-8312.2010.01384.x
Article number:
0
Affiliations:
Database:
גוגל סקולר
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
38287
Last updated date:
02/03/2022 17:27
Creation date:
06/12/2018 12:11
Scientific Publication
Red Anemone Guild Flowers as Focal Places for Mating and Feeding of Mediterranean Glaphyrid Beetles
99

TAMAR KEASAR, GUIDO SABATINELLI, DENIS KEITH, AMOTS DAFNI, OFRIT SHAVIT, ASAPH ZYLBERTAL, AVI SHMIDA

Red Anemone Guild Flowers as Focal Places for Mating and Feeding of Mediterranean Glaphyrid Beetles

Several species of glaphyrid (Scarabaeoidea: Glaphyridae) beetles forage and mate on Mediterranean red bowl-shaped flowers. In red anemones and poppies in Israel, female beetles occupy only a subset of the flowers, do not aggregate, and are hidden below the petals. This raises the question of how males find their mates. In the present study, we investigated the hypothesis that males and females orient to similar plant-generated cues, thereby increasing their mate encounter prospects. Previous studies have demonstrated that beetle attraction to red models increases with display area. Choice tests with flowers and with models indicate that both male and female beetles prefer large displays. In anemones, beetles rest, feed, and mate mainly on male-phase flowers, which are larger than female-phase flowers. Poppies that contain beetles are larger than the population average. These findings support the hypothesis that males and females meet by orienting to large red displays. Corolla size correlates with pollen reward in both plant species, suggesting that visits to large flowers also yield foraging benefits. Male beetles often jump rapidly among adjacent flowers. By contrast to the preference for large flowers by stationary individuals, these jump sequences are random with respect to flower sex-phase (in anemone) and size (in poppy). They may enable males to detect females at close range. We hypothesize that males employ a mixed mate-searching strategy, combining orientation to floral signals and to female-produced cues. The glaphyrids' preference for large flowers may have selected for extraordinarily large displays within the ‘red anemone’ pollination guild of the Levant.

Scientific Publication
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