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首页> 外文期刊>MADRONO >POLLINATORS OF AN ENDEMIC AND ENDANGERED SPECIES, MAMMILLARIA GAUMERI (CACTACEAE), IN ITS NATURAL HABITAT (COASTAL DUNE) AND IN A BOTANICAL GARDEN
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POLLINATORS OF AN ENDEMIC AND ENDANGERED SPECIES, MAMMILLARIA GAUMERI (CACTACEAE), IN ITS NATURAL HABITAT (COASTAL DUNE) AND IN A BOTANICAL GARDEN

机译：在地方生境（沿海沙丘）和植物园中，濒危物种和濒危物种传粉虫（哺乳动物）

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Mammillaria gaumeri (Britton & Ross) Orcutt (Cactaceae), an endemic plant of the Yucatan Peninsula, is included by the Mexican government in the list of species that require special protection. Its natural habitat is now restricted to fragmented areasand protection programs involve botanical gardens in growing individuals rescued from disturbed areas. Little information is available on the reproductive characteristics of this species and nothing is known of its pollinators. We investigated the visitors of M. gaumeri flowers, collecting and observing bee species in its natural habitat (i.e., coastal dune) and in a botanical garden, where coastal dune vegetation had been created. Observations were made on plants whose density was artificially increased by grouping flowering individuals. At each site, we: 1) collected insects visiting the flowers; 2) recorded number of visits; and 3) video-recorded bee movements on the flowers. As expected, the number of bee species and visitation frequency were higher at the botanical garden than at the coastal dune. After landing on a flower, bees either inspected the anthers or dived among them. These behaviors, carried out by all observed species, seemed related to the state of the anthers (full or empty of pollen) and stigma lobes (opened or closed). Specifically, visits lasted longer when anthers were full of pollen and stigma lobes were opened. The same bee species recorded on the dune were also recorded at the botanical garden, suggesting that the artificial dune at the botanical garden offered suitable conditions for the natural pollinators of this endangered cactus.
机译：尤卡坦半岛的特有植物，Mammillaria gaumeri（不列颠和罗斯）Orcutt（仙人掌科），墨西哥政府将其列为需要特别保护的物种。现在它的自然栖息地仅限于零散的地区，保护计划涉及从受干扰地区获救的成长中的植物园。关于该物种繁殖特性的信息很少，对其传粉者一无所知。我们调查了游客的gaumeri花草，收集并观察了其自然栖息地（即沿海沙丘）和植物园中的蜜蜂物种，在该植物园中已经建立了沿海沙丘植被。对通过将开花个体分组而人为增加密度的植物进行了观察。在每个站点，我们：1）收集昆虫参观花朵; 2）记录访问次数; 3）记录蜜蜂在花朵上的运动。不出所料，植物园的蜂种数量和探访频率均高于沿海沙丘。降落在花朵上之后，蜜蜂要么检查花药，要么在它们之中潜水。所有观察到的物种所进行的这些行为似乎与花药的状态（花粉满或空）和柱头裂片（开放或闭合）有关。具体来说，当花药充满花粉和柱头裂片时，访视时间会更长。在植物园中也记录了沙丘上记录的相同蜜蜂物种，这表明植物园中的人工沙丘为这种濒临灭绝的仙人掌的自然授粉媒介提供了合适的条件。

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