蜘蛛一次能吐出多少蛛丝，会不会丝尽蛛亡？真的会被人类“榨干”
<h1 style="color: black; text-align: left; margin-bottom: 10px;">蜘蛛会丝尽蛛亡吗？</h1>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">蜘蛛的蛛丝到底有多长，<span style="color: black;">倘若</span><span style="color: black;">始终</span><span style="color: black;">一直</span>地抽丝，它们会不会被“榨干”，<span style="color: black;">最后</span>丝尽蛛亡?</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在电影中，蜘蛛侠会从手腕中射出蜘蛛丝，<span style="color: black;">然则</span>在现实中的蜘蛛，并不是从四肢中射出蛛丝。<span style="color: black;">另一</span>，尽管<span style="color: black;">咱们</span>经常把这种<span style="color: black;">行径</span>叫做“吐丝”，但其实蜘蛛<span style="color: black;">亦</span>不是从嘴里吐出蛛丝的，准确地说，它们的蛛丝是从屁股里拉出来的。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/0cb24381a85b46c58176fc31e883d1a5~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=r2EHH0S2rE8ilfLVTSh3WZvEw5c%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">之<span style="color: black;">因此</span>能够吐丝，是<span style="color: black;">由于</span>在蜘蛛的腹部存在一个神奇的丝囊，这个丝囊像一个沐浴的花洒，长有许多小孔，这些小孔<span style="color: black;">便是</span>吐丝器。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">吐丝器的根部与丝腺相连，内部储存着<span style="color: black;">海量</span>的蛋白质，当它们需要“吐丝”的时候，就会调动丝腺分泌出蛋白质粘液喷射出来。潮湿的粘液遇到空气<span style="color: black;">快速</span>干燥，并且在内部压强的<span style="color: black;">功效</span>下，被源源<span style="color: black;">持续</span>地拉成蜘蛛丝。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/3486758009b2451cbec30ba6b1821cff~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=fip5yCTYF0MKdLp%2BoD80c4Cdayw%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">蜘蛛丝是最坚韧的蛋白质纤维，一根蛛丝里有超过2500根蛛丝纤维，在所有天然生物材料里，它的强度都是首屈一指的，其抗拉强度是骨骼的三倍。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">然而，如此<span style="color: black;">优秀</span>的材料，在被蜘蛛制造出来的时候却非常纤细，其直径<span style="color: black;">一般</span><span style="color: black;">少于</span>2微米，<span style="color: black;">仅有</span>人类头发丝的三<span style="color: black;">非常</span>之一。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/65e6b5873cc64d88834db7c5cebff749~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=v6jRX3hh27hW5WcbD5Y1ad%2FXI7c%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">倘若</span>真的有人能够像蜘蛛侠<span style="color: black;">同样</span>，瞬间喷射出铅笔粗细的蜘蛛丝，<span style="color: black;">那样</span>用它来拉动上万吨的游轮，<span style="color: black;">或</span>正在行驶的列车<span style="color: black;">亦</span>不是不可能的。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/342f51d0aff94dc9b2fdcd01c9e31400~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=xdW3PiyhQP3s1kL7tTpUnp6vWls%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">蛛丝的<span style="color: black;">重点</span>材料是一种特殊的蛋白纤维，一只蜘蛛一次能够吐多少蛛丝，<span style="color: black;">重点</span>和它<span style="color: black;">身体</span>有多少蛋白质决定。一只普通的圆网蜘蛛一次最多能够吐出700米长的蛛丝，当丝囊内的蛋白质耗尽的时候，它们就不会再吐丝了。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">然则</span>它们并不会<span style="color: black;">因此呢</span>而死，而是会到处寻找和捕猎昆虫等<span style="color: black;">饱含</span>蛋白质的<span style="color: black;">食品</span>，为丝囊<span style="color: black;">弥补</span>吐丝材料。等到蛋白质<span style="color: black;">弥补</span>完毕，它们就又<span style="color: black;">能够</span>继续吐丝了。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/d700d9dd12d54c52bf8a75b20a14e7bb~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=kfkKSCQJe5NrF6mFPjGc%2B8S2RBI%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">还有一种办法能够让它们快速<span style="color: black;">弥补</span>蛛丝，那<span style="color: black;">便是</span>将多余的蛛丝吃进去，蜘蛛的消化系统<span style="color: black;">针对</span>蛋白质非常<span style="color: black;">敏锐</span>，很容易就能将它们完全消化吸收，变成身体所需的氨基酸。<span style="color: black;">不外</span>，蜘蛛只能回收自己吐出的蛛丝，而<span style="color: black;">没法</span>回收其他蜘蛛的。<span style="color: black;">因此呢</span>，<span style="color: black;">海量</span>捕猎昆虫是它们获取蛋白质的<span style="color: black;">重点</span><span style="color: black;">办法</span>。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/12b7c66ab79b48eba4be2dc291521805~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=TlIjxj6YVZpks2edHZnRtkdb6Hs%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">当然，在自然<span style="color: black;">要求</span>下，蜘蛛们懂得量力而行，适当<span style="color: black;">保留</span><span style="color: black;">有些</span>蛋白质用于维持<span style="color: black;">自己</span>的正常生命活动。<span style="color: black;">然则</span><span style="color: black;">倘若</span>有人刻意“压榨”它们，就会让蜘蛛变得<span style="color: black;">非常</span>虚弱，当抽不出丝的时候，它们<span style="color: black;">亦</span>快要被饿死了。</p>
<h1 style="color: black; text-align: left; margin-bottom: 10px;">蜘蛛丝：为了捕猎、交配和远行</h1>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">全世界</span><span style="color: black;">日前</span>共有46055种蜘蛛，<span style="color: black;">然则</span>并非所有蜘蛛都会吐丝，<span style="color: black;">亦</span>不是所有蜘蛛都依靠蛛网来捕猎。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">咱们</span>平时在动画片<span style="color: black;">或</span>电视剧中见到的蜘蛛网，大<span style="color: black;">大都是</span>这种非常规则的圆形蜘蛛网，圆网蜘蛛的<span style="color: black;">重点</span><span style="color: black;">表率</span><span style="color: black;">包含</span>大腹园蛛、金蛛、络新妇等品种。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">圆形蛛网的特点是，<span style="color: black;">仅有</span>一圈圈环绕的纬丝有粘性，<span style="color: black;">能够</span>用来<span style="color: black;">捕捉</span>猎物，而外围的框架和从中枢向四周延伸的经丝则是<span style="color: black;">无</span>粘性的。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/9831362fa43a4f1db55f01c2f0557fdd~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=Mww0amFG7eP0Re9cBOC4xgzBwMI%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">因为</span>经常用纬丝来捕猎，上面的粘液很容易干涸失效，<span style="color: black;">因此</span>圆网蜘蛛的蛛网需要<span style="color: black;">定时</span>更换，重新编织新的蛛网。理论上<span style="color: black;">来讲</span>，雌性园蛛<span style="color: black;">能够</span>做到<span style="color: black;">每日</span>织一张新的蜘蛛网，<span style="color: black;">然则</span>在遇到<span style="color: black;">暴风</span>暴雨天气，<span style="color: black;">或</span>脱皮产卵前后，蜘蛛们总要给自己放几天假。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/39078b84904a4d558876dc7aaf82dd38~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=%2BTCGSNfvYDSIKhTDGY%2FuvIro82c%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">然则</span>园蛛们有时候会遵循着能省就省的原则，织出<span style="color: black;">非常</span>敷衍的蜘蛛网，<span style="color: black;">例如</span>这只大腹园蛛的蛛网看上去就像是一个梯子。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/2db3a9aa67504c7e8ed309d31d30aa02~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=e3yK5YHvbx4tQuAWac6XT%2BZn630%3D" style="width: 50%; margin-bottom: 20px;">
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">大腹园蛛简陋的蛛网</p>
</div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">还有园蛛下属的曲腹蛛，它们编出来的蜘蛛网真可谓是“家徒四壁”“四面漏风”啊，<span style="color: black;">这般</span>的蛛网真能捉到猎物？</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/2e0f2c05695545bfb8f4dc01afc728fc~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=GcHtHMMOPPe0%2F91%2BSq9sBKNhhTs%3D" style="width: 50%; margin-bottom: 20px;">
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">曲腹蛛特有的蛛网</p>
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">针对</span>狡蛛<span style="color: black;">来讲</span>，就<span style="color: black;">无</span>用蛛网来捕猎的<span style="color: black;">懊恼</span>了，它们<span style="color: black;">善于</span>游猎，有时候能够下河<span style="color: black;">捉捕</span>小鱼，<span style="color: black;">因此</span>并不需要用蜘蛛网来捕猎。但雌性狡蛛在产卵后，会随身携带卵囊，当感到若蛛即将孵化时，就会爬到草丛或灌木顶端结一个“育儿网”，这种蛛网看上去像棉花<span style="color: black;">同样</span>非常密集。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/40a1efda457b44b8ba31e3ebda32213e~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=XH3OQz97G0PArSaY%2BP1OZdECE4g%3D" style="width: 50%; margin-bottom: 20px;">
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">狡蛛的“育儿网”</p>
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">雌蛛<span style="color: black;">非常</span><span style="color: black;">安心</span>地把卵放在上面，让若蛛孵化后<span style="color: black;">能够</span>接受太阳光照射，自己则在旁边<span style="color: black;">保护</span>，待若蛛蜕皮一次后才会离开。<span style="color: black;">由于</span>狡蛛<span style="color: black;">一辈子</span>的结网数等于其产卵次数，<span style="color: black;">因此</span><span style="color: black;">一般</span><span style="color: black;">状况</span>下它们的织网次数不会超过5次。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/8cd3c7f1ccf146a5bb66de5f581ef563~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=xDNr04Y%2B1dTTzlwXQj%2BTUOLW3CA%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">再说到狡蛛中的雄性蜘蛛，它们<span style="color: black;">一辈子</span>只结一次网，并将它献给了生物最伟大的事业——繁衍后代。雄蛛们平时不结网，在交配期，它们会先跳到雌蛛的网上，拨动蛛丝并“跳舞”来吸引雌性的<span style="color: black;">重视</span>，<span style="color: black;">乃至</span>还能像孔雀开屏<span style="color: black;">同样</span>妖娆。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/f31ff10de7fd4bf3854141994fa3f928~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=XSdXOk0umLhgUEG%2FtysJTg%2B61h0%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在费尽千辛万苦之后，雌蛛总算同意了请求，<span style="color: black;">那样</span>雄蛛就会在交配前就地结一张网，<span style="color: black;">而后</span>将精液排到蛛网上，用嘴边的触肢器吸取精液<span style="color: black;">起始</span>繁衍后代。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/aa196abd35fb4d5885c60fc3fd74d3dc~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=DZMwu71ZXwWh6z0QIMZpb8yYkl8%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">除了这些基本的<span style="color: black;">需要</span>以外，蛛丝还在不经意间<span style="color: black;">帮忙</span><span style="color: black;">全部</span>蜘蛛种群完<span style="color: black;">成为了</span>“领土扩张”。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">例如</span>这只达尔文树皮蜘蛛，为了在宽阔的河流上方编织一张巨大的捕猎网，它来到了河岸边<span style="color: black;">近期</span>的一棵高树上。在<span style="color: black;">长期</span>的等待后，一阵微风吹过，它<span style="color: black;">起始</span>喷射蛛丝。蛛丝在微风的吹拂下，<span style="color: black;">持续</span>飘向对岸，<span style="color: black;">最后</span>在另一边的河岸上落地了。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/099cd555a0804ddf8557390d4674ade4~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=gmw06SfIPapzCL9tQYrbftKuUwE%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">蜘蛛<span style="color: black;">起始</span>顺着固定好的“绳索桥”，在河流上方施展“走钢丝”“倒挂金钩”等独门绝技。随着它的<span style="color: black;">持续</span>穿梭。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/c0a760ddeab741a7b03f9f2d31b7a87d~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=7w2XoCH23ogbQr6JCFbNpoRFvCY%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">一张直径达到2米的蛛网，被一根蛛丝悬挂在了河流上方。无数蜻蜓和飞虫们在其中穿梭而过，总有<span style="color: black;">有些</span>“冒失鬼”会撞进蛛网的怀抱，<span style="color: black;">作为</span>达尔文蜘蛛的晚餐。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/7f5f35ce68d24660bc73612e624bdcdc~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=UYbH6bu7cgkRJNiSVp83U15SOZM%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">而<span style="color: black;">这般</span>一个罕见的“跨海大桥”，<span style="color: black;">亦</span><span style="color: black;">作为</span>了无数蜘蛛迁移的桥梁，<span style="color: black;">乃至</span>还有些蜘蛛仅凭着一根飘荡的蛛丝“御风飞行”穿越它们<span style="color: black;">自己</span>难以抵达的<span style="color: black;">地区</span>。<span style="color: black;">亦</span>正<span style="color: black;">因此呢</span>，蜘蛛种群们<span style="color: black;">才可</span>遍及世界各地，演化出46000多个品种。</p>
<h1 style="color: black; text-align: left; margin-bottom: 10px;"><span style="color: black;">为何</span>蜘蛛丝<span style="color: black;">不可</span>代替蚕丝？</h1>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">一个有趣的问题是，蜘蛛丝的强度在<span style="color: black;">各样</span>材料中都是首屈一指的，<span style="color: black;">那样</span><span style="color: black;">为何</span>在古代，人类<span style="color: black;">发掘</span>了蚕丝能用来织衣服，而<span style="color: black;">无</span><span style="color: black;">选取</span>用蜘蛛丝来织衣服呢？</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/640b44d7246b4f71ba1845ed30dc916f~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=GNLWvFQnqiH6C%2FUdkSbkhNGnxjM%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">还别说，在历史上，还真有人尝试用蜘蛛丝来织衣服。<span style="color: black;">由于</span><span style="color: black;">思虑</span>到蚕<span style="color: black;">一辈子</span>只能吐一次丝，而<span style="color: black;">非常多</span>蜘蛛却<span style="color: black;">能够</span>随时吐丝，<span style="color: black;">因此</span>18世纪法国著名的博物学家雷米尔(Reaumur)就做了<span style="color: black;">关联</span><span style="color: black;">科研</span>；建国初期，上海国营绢纺厂和苏州<span style="color: black;">第1</span>丝厂<span style="color: black;">亦</span>曾<span style="color: black;">科研</span>过用蛛丝代替蚕丝<span style="color: black;">做为</span>制衣原料的可能性。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/97dea8b807eb4242b6cbe8f291a020dc~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=%2FhxZA2c9QiZif1Ls2cmymUBZtMQ%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">她们</span>得出的结论却是高度一致的——和蚕丝相比，蜘蛛丝实在太细了，<span style="color: black;">仅有</span>蚕丝的<span style="color: black;">非常</span>之一，在纺织过程中很容易断裂，<span style="color: black;">引起</span>用蛛丝制衣难度大，成本高，不划算。当然，<span style="color: black;">咱们</span><span style="color: black;">能够</span>把多根蛛丝拧成一根，<span style="color: black;">或</span>换用专门为纺织蛛丝而设计的<span style="color: black;">设备</span>来<span style="color: black;">处理</span>蛛丝太细容易断裂的问题，<span style="color: black;">然则</span>这<span style="color: black;">亦</span>必然会让制造工艺变得更加繁琐，<span style="color: black;">同期</span>生产成本<span style="color: black;">亦</span>会大幅<span style="color: black;">加强</span>。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/948a8f637cb34e809641cd4ee9a692dc~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=jdX%2FS1wViyBq2AZ1BgGWjHtUQSo%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">另一</span>，还有一点是，养殖蜘蛛的难度很大。蜘蛛和蚕<span style="color: black;">区别</span>，它们是非常活跃的，在户外的时候，只要顺着一根蛛丝“御风飞行”，就能像蒲公英<span style="color: black;">同样</span>四处飘荡。而在室内养殖<span style="color: black;">亦</span>存在问题，<span style="color: black;">因为</span>蜘蛛的习性较为孤僻，难以像养蚕<span style="color: black;">同样</span>挤在一堆，<span style="color: black;">因此</span>很难集中管理，<span style="color: black;">况且</span>占地<span style="color: black;">亦</span><span style="color: black;">更加多</span>。</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/2cea868982c947cfa9fb19275e66b9f8~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725096408&x-signature=10c%2F1H7UIBZvAkiiMGIdCiXGYDo%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">最后一个难点是饲料问题，蚕在自然生长状态下，只需要<span style="color: black;">运用</span>桑叶就能<span style="color: black;">成长</span>，<span style="color: black;">此刻</span>的饲料虽然添加了玉米粉、大豆粉和维生素，但是成本<span style="color: black;">亦</span>不算太高。可是蜘蛛是以昆虫为食的，其营养转化效率<span style="color: black;">无</span>素食动物高，<span style="color: black;">况且</span>这些含有蛋白的虫子价格<span style="color: black;">亦</span>很贵，成本就会大大<span style="color: black;">加强</span>了。</p>
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