RELATIONSHIP BETWEEN OVIPOSITION SITE SELECTION AND MANDIBULAR ASYMMETRY IN TWO SPECIES OF LIZARD BEETLES, ANADASTUS PULCHELLOIDES NAKANE AND DOUBLEDAYA BUCCULENTA LEWIS (COLEOPTERA: EROTYLIDAE: LANGURIINAE)
RELATIONSHIP BETWEEN OVIPOSITION SITE SELECTION AND MANDIBULAR ASYMMETRY IN TWO SPECIES OF LIZARD BEETLES, ANADASTUS PULCHELLOIDES NAKANE AND DOUBLEDAYA BUCCULENTA LEWIS (COLEOPTERA: EROTYLIDAE: LANGURIINAE)
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DOI：
10.1649/0010-065x-67.3.360
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发表时间：
2013-09-01
影响因子：
0.7
通讯作者：
Togashi, Katsumi
中科院分区：
文献类型：
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作者：
Toki, Wataru;Togashi, Katsumi
双翅叶蝉（鞘翅目：叶蝉科：叶蝉科）成年雌性的口器和属表现出明显的方向不对称。雌性用下颚在坚硬的竹节间挖洞，在竹节间的内表面产卵。为了确定完全产卵标记（COMs）的空间分布格局与下颌不对称程度之间的关系，在竹（Poaceae） Pleioblastus simonii (Carriere) Nakai的茎和节间上进行了COMs计数，并对未成熟期的存活率进行了调查。另一种月桂甲虫，Anadastus pulchelloides Nakane，表现出较小程度的下颌不对称。本研究还对多年生禾草Arundinella hirta （Thunb.）的秆和节间进行了COMs调查。田中。两种瓢虫的雌性在田间产卵时均选择寄主植物茎秆基部的大节间。每个含com的节间上COMs的平均+/- SD数为1.1 +/- 0.4，表明COMs阻止雌性在含com的节间上产卵。水蛭幼虫在节间完成发育。随着节间的增大，水蛭幼期的存活率增加。考虑到成虫体型与节间尺寸呈正相关关系，瓢虫雌性明显不对称的下颌骨可能有助于在节间产卵，从而为后代提供更高的适应性。
Mouthparts and genae of the adult females of Doubledaya bucculenta Lewis (Coleoptera: Erotylidae: Languriinae) exhibit distinct directional asymmetry. Females excavate holes with their mandibles on hard internodes of bamboos to deposit their eggs on the inner surface of internodes. To determine the relationship between the spatial distribution pattern of completed oviposition marks (COMs) and the degree of mandibular asymmetry, COMs were counted on the culms and internodes of the bamboo Pleioblastus simonii (Carriere) Nakai (Poaceae), and the survival rate of immature stages was investigated. Another languriine beetle, Anadastus pulchelloides Nakane, exhibits a smaller degree of mandibular asymmetry. For this species, COMs were also investigated on culms and internodes but of the perennial grass Arundinella hirta (Thunb.) Tanaka. Females of the two beetle species selected large basilar internodes of host plant culms for oviposition in the field. The mean number +/- SD of COMs per COM-containing internode was 1.1 +/- 0.4 for both D. bucculenta and A. pulchelloides, suggesting that COMs deterred females from ovipositing on COM-containing internodes. Larvae of D. bucculenta completed development within an internode. The survival rate of D. bucculenta immature stages increased as the internodes increased in size. Given the positive correlation between adult body size and internode size, it is possible that the markedly asymmetric mandibles of D. bucculenta females help with oviposition in internodes that give higher fitness to the offspring.