两种蝙蝠作为 Neobuxbaumia tetetzo（仙人掌科）传粉者的相对重要性：形态测定和花粉负荷分析的证据,Ecological Research

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两种蝙蝠作为 Neobuxbaumia tetetzo（仙人掌科）传粉者的相对重要性：形态测定和花粉负荷分析的证据
Ecological Research ( IF 1.7 ) Pub Date : 2023-01-18 , DOI: 10.1111/1440-1703.12384
Xiumy Michelle Sánchez‐Collazo ₁ , Dulce María Figueroa‐Castro ₁ , José Alberto Cruz _{1,

2} , Carlos Castañeda‐Posadas ₁

Affiliation

Neobuxbaumia tetetzo是一种柱状仙人掌，蝙蝠种类Choeronycteris mexicana和Leptonycteris yerbabuenae都会光顾它的花。尽管这两种蝙蝠都被认为是N. tetetzo的传粉者，但尚未估计每种蝙蝠的授粉概率。在这项研究中，我们确定了C. mexicana和L. yerbabuenae作为N. tetetzo传粉者的相对重要性。使用两种不同的方法估计授粉的概率：（i）蝙蝠头部（线性特征[头部总长度、鼻子长度以及面部高度和宽度]）和颅骨特征（形状特征）与花特征（线性特征）之间的形态对应关系[内部花管长度，包括和不包括蜜腺、花冠直径、雄蕊长度、花柱长度和花冠管直径]和形状性状），以及 (ii) 花粉负荷分析，以估计出现百分比 (PO) 和授粉概率指数（PPI）。我们的结果表明， C. mexicana的头部和颅骨特征与N. tetetzo的花之间缺乏显着的对应关系，而L. yerbabuenae的头部总长度之间缺乏线性形态学对应关系。和花的长度。墨西哥花粉量由7种不同花粉类型组成，其PO和PPI分别为41.87±9.53%和0.29。Leptonycteris yerbabuenae花粉量由三种花粉类型组成，PO 为 78.29 ± 13.67%，PPI 为 0.67。我们的结果表明，虽然C. mexicana对N. tetetzo花的稳定性较低，但L. yerbabuenae 的授粉概率较高。

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Relative importance of two bat species as pollinators of Neobuxbaumia tetetzo (Cactaceae): Evidences from morphometric and pollen load analyses

Neobuxbaumia tetetzo is a columnar cactus whose flowers are visited by the bat species Choeronycteris mexicana and Leptonycteris yerbabuenae. Although both bat species are considered the pollinators of N. tetetzo, the probability of pollination of each bat species has not been estimated. In this study, we determine the relative importance of C. mexicana and L. yerbabuenae as pollinators of N. tetetzo. The probability of pollination was estimated using two different approaches: (i) morphological correspondence between head (linear traits [total head length, snout length, and face height and width]) and cranial traits (shape traits) of bats and flower traits (linear [internal floral tube length including and excluding the nectary, corolla diameter, stamen length, style length, and corolla tube diameter] and shape traits), and (ii) pollen load analyses to estimate the percentage of occurrence (PO) and the pollination probability index (PPI). Our results showed a lack of a significant correspondence between both head and cranial traits of C. mexicana and the flowers of N. tetetzo, and linear morphological correspondence between total head length of L. yerbabuenae and flower length. Pollen loads of C. mexicana were composed by seven different pollen types, its PO and PPI were 41.87 ± 9.53% and 0.29, respectively. Leptonycteris yerbabuenae pollen loads were composed by three pollen types, with a PO of 78.29 ± 13.67% and a PPI of 0.67. Our results suggest that whereas C. mexicana has a low constancy to the flowers of N. tetetzo, L. yerbabuenae has a higher probability of pollination.

更新日期：2023-01-18

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