象蛇

The Classic of Northern Mountains: three hundred li east is Mount Yang. Jade above; gold and copper below. A beast lives there shaped like an ox with a red tail, whose neck bears a swelling like a ladle — its name is Linghu, its call is its own name, and eating it cures madness. And a bird, shaped like a red pheasant, patterned in five colours, which is male and female to itself. Its name is Xiangshe, and its call is its own name. One thing first: hermaphroditism in nature is real. Not metaphor, not myth. You can see it in a museum drawer. Birds exhibit a phenomenon called bilateral gynandromorphism. A bird's body divides down the midline: the left half carries male plumage, the right half female plumage, the boundary as clean as if ruled. Northern cardinals have been recorded with it repeatedly. In 2021 a rose-breasted grosbeak in Pennsylvania showed rose-red on the left breast and golden on the right, and the photographs went everywhere. The cause is embryonic. A bird's sex is determined cell by cell — ZZ male, ZW female — and if a very early embryo divides abnormally, some cells end up ZZ and some ZW. What grows is a half-male, half-female bird. And pheasants are among the most extremely dimorphic of all birds. The male is saturated: metallic green, copper red, purple, gold. The female is plain brown-grey, speckled. A pheasant with gynandromorphism would differ wildly across its two halves — one side "patterned in five colours," one side earth-brown. That matches both phrases exactly: five-coloured patterning, and male-and-female to itself. "Five colours" does not mean a count of five. It means polychrome — the classical system of blue, red, yellow, white, black. A male pheasant's plumage genuinely holds all of them at once. "Male and female to itself" describes a gynandromorph's behavioural predicament more precisely than "hermaphrodite" does. It has male plumage and female plumage. It will be courted by males and will court females. It completes half a pair by itself. Then: its call is its own name. Xiang-she. Xiang-she. Xiang means "resembles." She means snake. Why snake? One possibility: the neck. These birds stretch and twist the neck in display. Pheasants have bare skin at the throat, and the head-bobbing of courtship does read as serpentine. Another: it is a transcription of the call, now lost. I lean to a third. It may be a scribal error. The old graph for ta, "it," is a picture of a snake — the character originally meant snake. Xiang-ta, "resembles that thing." A copyist wrote she for ta. If so, the original sense was: there is a bird that resembles "that" — the Linghu mentioned just before? Or something the writer could not name. Either way, "male and female to itself" is hard observation. Whoever wrote it had seen a bird whose two halves did not match. He had no word for genes. He had four characters. And with those four characters he recorded, accurately, one of the rarest specimens in ornithology. Mount Yang: much jade, much gold and copper. On the same mountain lives Linghu, an ox-shaped beast whose flesh cures madness. One mountain, one medicinal animal, one half-male bird. The mountain is in Shanxi. The southern Taihang still has plenty of pheasants.

"เป็นทั้งตัวผู้และตัวเมียในตัวเอง" — เรื่องนี้จริงในธรรมชาติ นกมีปรากฏการณ์ "gynandromorphism แบบสองข้าง": ตัวหนึ่งซีกซ้ายขนตัวผู้ ซีกขวาขนตัวเมีย แบ่งตรงกลางเป๊ะ ๆ เกิดจากตัวอ่อน: เพศนกกำหนดที่ระดับเซลล์ (ZZ ผู้, ZW เมีย) ถ้าการแบ่งตัวผิดปกติช่วงแรก จะมีทั้ง ZZ และ ZW ในตัวเดียว ไก่ฟ้าเป็นนกที่ตัวผู้-ตัวเมียสีต่างกันมากที่สุดชนิดหนึ่ง ถ้าเกิดภาวะนี้ ครึ่งหนึ่งจะ "ลายห้าสี" อีกครึ่งเป็นสีน้ำตาล "เซี่ยงเสอ" อาจเป็นคำผิดของ "เซี่ยงทา" — อักษร "ทา" ในยุคโบราณคือรูปร่างงู แปลว่า "เหมือนสิ่งนั้น"

"Jantan dan betina pada dirinya sendiri" — ini benar dalam alam. Burung ada fenomena "gynandromorphism dua belah": separuh kiri bulu jantan, separuh kanan bulu betina, sempadan lurus tepat. Punca pada embrio: jantina burung ditentukan per sel (ZZ jantan, ZW betina). Jika pembelahan awal abnormal, ada kedua-duanya dalam satu badan. Kuang ialah antara burung paling dimorfik. Jika ini berlaku, satu sisi "bercorak lima warna", satu sisi coklat tanah. "Xiangshe" mungkin salah tulis bagi "Xiangta" — aksara "ta" dalam tulisan lama ialah bentuk ular, maksudnya "seperti benda itu".

"Tự nó vừa đực vừa cái" — điều này có thật trong tự nhiên. Chim có hiện tượng "gynandromorphism hai bên": nửa trái lông trống, nửa phải lông mái, ranh giới thẳng như kẻ. Nguyên nhân ở phôi: giới tính chim do từng tế bào quyết định (ZZ trống, ZW mái). Nếu phân chia sớm bất thường, một cơ thể có cả hai. Trĩ là loài dị hình giới tính cực đoan. Nếu xảy ra, một bên "vằn năm màu", một bên nâu đất. "Tượng Xà" có thể là chép nhầm của "Tượng Tha" — chữ "tha" thời cổ là hình con rắn, nghĩa "giống cái đó".

"Jantan dan betina pada dirinya sendiri" — ini nyata di alam. Burung punya fenomena "gynandromorphism dua sisi": separuh kiri bulu jantan, separuh kanan bulu betina, batas lurus tepat. Penyebabnya pada embrio: jenis kelamin burung ditentukan per sel (ZZ jantan, ZW betina). Jika pembelahan awal abnormal, ada keduanya dalam satu tubuh. Kuang adalah antara burung paling dimorfik. Jika ini terjadi, satu sisi "bercorak lima warna", satu sisi coklat tanah. "Xiangshe" mungkin salah tulis untuk "Xiangta" — aksara "ta" dalam aksara lama adalah bentuk ular, artinya "seperti benda itu".