Muñoz-Romo Mariana, Sosa Maricela, Quintero Yveth Casart
Laboratorio de Zoologia Aplicada, Dpto. de Biologia, Universidad de Los Andes. La Hechicera, Edo. Mérida, Venezuela.
Rev Biol Trop. 2005 Mar-Jun;53(1-2):277-80.
We examined the protoplasmic assimilation of columnar cacti pollen grains in two species of Venezuelan desert glosophagine bats, Glossophaga longirostris and Leptonycteris curasoae, by determining the amount of empty (digested) pollen grains found in their fecal samples. To determine the amount of empty pollen grains, the fecal samples were stained to differ between empty and full (non-digested) pollen grains. The number of empty and full pollen grains observed in the fecal samples were corrected using the amount of aborted pollens present (before anthesis) in flowers of the columnar cacti species (Subpilocereus repandus, Stenocereus griseus and Pilosocereus tillianus) used by bats as food in the study site; G. longirostris and L. curasoae digested 64.2% and 71.3% of all the pollens fed, respectively. These high values confirm the importance of pollen in the diet of these bats, given its high nitrogen level.
我们通过测定两种委内瑞拉沙漠长舌蝠（长吻长舌蝠和库拉索长鼻蝠）粪便样本中发现的空（已消化）花粉粒数量，研究了柱状仙人掌花粉粒的原生质同化情况。为了确定空花粉粒的数量，对粪便样本进行染色，以便区分空花粉粒和饱满（未消化）花粉粒。粪便样本中观察到的空花粉粒和饱满花粉粒数量，使用研究地点蝙蝠所食用的柱状仙人掌物种（细柱仙人掌、灰大花柱仙人掌和蒂氏毛花柱仙人掌）花朵中存在的（开花前）败育花粉量进行校正；长吻长舌蝠和库拉索长鼻蝠分别消化了所摄入花粉的64.2%和71.3%。鉴于花粉的高氮含量，这些高数值证实了花粉在这些蝙蝠饮食中的重要性。
