当前位置: X-MOL 学术Limnology › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The “mosco” (Hemiptera: Corixidae and Notonectidae) of Lake Cuitzeo, Mexico: an unusual inland water fishery
Limnology ( IF 1.6 ) Pub Date : 2019-08-26 , DOI: 10.1007/s10201-019-00590-2
Sonia González-Santoyo , Javier Alcocer , Luis A. Oseguera

Lake Cuitzeo is Mexico’s second-largest lake (~ 425 km2). The West Basin is shallow, seasonally astatic and alkaline, and it contains saltwater; it is in this extreme environment that there are fisheries maintained by local fishermen that are based on non-conventional products. These products include the “mosco” (hemipteran water boatmen and backswimmers: Corixidae and Notonectidae), which has become the most important “non-conventional resource” owing to high catch rates and its contribution to the local economy; its uses include its sale as pet food for songbirds and ornamental fishes. No other commercial fisheries of adult Hemiptera are known worldwide. This study records, for the first time, the species composition of the “mosco”, which was investigated through monthly sampling for twelve months at three sites in the West Basin. Seven species of aquatic Hemiptera were found: 5 species of the family Corixidae [Graptocorixa sp. (Hungerford), Corisella mercenaria (Say), Corisella edulis (Champion), Trichocorixa parvula (Champion) and Krizousacorixa azteca (Jaczewski)], and 2 species of the family Notonectidae [Buenoa scimitra (Bare) and Notonecta irrorata (Uhler)]. The seven species are new records for Lake Cuitzeo. Corixidae were more abundant than Notonectidae, at a ratio that varied from 2.3:1 to 34.2:1. Abundance peaks of up to 339 ind. m−2 were recorded during the cold and dry season, from October/November until January, along with the highest salinity and lowest water temperatures. Graptocorixa sp. was the most abundant and widely distributed species in the West Basin, followed by Krizousacorixa azteca. The characteristics of the West Basin, such as its temporality and elevated salinity and pH, have favored the explosive development of this group, probably because these “extreme” conditions are unfavorable for competitors and predators.

中文翻译:

墨西哥Cuitzeo湖的“ mosco”(半翅目:Corixidae和Notonectidae):一种不寻常的内陆水域渔业

Cuitzeo湖是墨西哥第二大湖(〜425 km 2)。西盆地是浅水区,季节性不带静电,呈碱性,里面有盐水。在这种极端的环境中,当地渔民所养的渔业是基于非常规产品的。这些产品包括“ mosco”(半水上水手和后水游泳者:Corixidae和Notonectidae),由于捕获率高及其对当地经济的贡献,它已成为最重要的“非常规资源”。它的用途包括作为鸣禽和观赏鱼的宠物食品出售。世界上没有其他成年半翅目的商业性渔业。这项研究首次记录了“ mosco”的物种组成,并通过在西盆地的三个地点每月进行为期十二个月的抽样调查。发现了七种水生半翅目:Graptocorixa sp。(Hungerford),Corisella mercenaria(Say),Corisella edulis(Champion),Trichocorixa parvula(Champion)和Krizousacorixa azteca(Jaczewski)],以及Notonectidae [ Buenoa scimitra(Bare)和Notonecta irrrata)的2种。这七个物种是Cuitzeo湖的新记录。ix科比夜蛾科更丰富,比率从2.3:1到34.2:1不等。最高峰达339 ind。从10月/ 11月到1月,在寒冷和干燥的季节记录了m -2,其中盐度最高,水温最低。鹰嘴豆sp。是西盆地最丰富,分布最广泛的物种,其次是阿兹台克木Krizousacorixa azteca)。西部盆地的特征,如其时间性,盐度和pH值升高,有利于该群体的爆炸性发展,可能是因为这些“极端”条件不利于竞争者和掠食者。
更新日期:2019-08-26
down
wechat
bug