Znn3bq.jpeg
²é¿´: 1478  |  »Ø¸´: 3
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

qingnian20

½ð³æ (ÕýʽдÊÖ)

[½»Á÷] SCIÎÄÕÂÖÐÒýÊö±ðÈ˹۵㳣Óôʻã ÒÑÓÐ2È˲ÎÓë

Rosenthal and Evans used playbacks of video animations to show that females did not exhibit a preference between a swordless male and a sworded male if the total body length of the two were equal.
×î³£¼ûµÄÒýÊö¹ÛµãµÄ´Ê»ã

Much of the research in sexual selection in the last two decades has examined how a female¡¯s preference that does not influence her immediate reproductive success can still evolve if it is genetically correlated with another character under direct selection.
Examined  µ÷²é£¬Ñо¿¡£²»ÒªÃ¿´Îдµ½Ñо¿Ê±×ÜÓÃstudy£¬¿ÉÒÔÓÃЩÆäËüµÄ´Ê»ã£¬±ÈÈçexamine£¬±ÈÈçwork¡£

Two hypotheses for female preference evolution¡ªrunaway sexual selection and good genes selection¡ªstate that preferences evolve indirectly because they are genetically correlated with male traits that are under direct selection; that is, the preferences themselves are not under direct selection.
State  ÉùÃ÷¡£ÔÚÒýÊö±ðÈ˵Ĺ۵ãʱ£¬Èç¹û²»ÄÜÍêȫͬÒ⣬ʹÓÃstate ±Èshow¸ü¼ÓÖÐÁ¢Ð©¡£

Studies of receiver biases suggest that such analogies might not be broadly applicable.
ÓÖÒ»ÖÖ½ÏΪ¿Í¹ÛµÄÒýÊö¹ÛµãµÄ±í´ï·½·¨¡£

Burley argued that the preference for red beaks is adaptive because it indicates male health, and this preference is then transferred to leg-band color.
Ö¤Ã÷¡£

According to the anti-monotony hypothesis, habituation plays an important role in the evolution of complex vocalizations in songbirds: Increased song complexity reduces habituation of neighboring males and courting females.
¸ù¾Ý¡­

Previous studies of acoustic and bioluminescent interactions had emphasized potential advantages to group-signaling organization, such as minimizing predation, preserving species-specific signal characters, or increasing the attractiveness of the group.
´øÓÐССµÄÇ¿µ÷
»Ø¸´´ËÂ¥

» ÊÕ¼±¾ÌûµÄÌÔÌûר¼­ÍƼö

Ó¢ÎÄÂÛÎÄд×÷Ͷ¸å·½·¨Óë¼¼ÇÉ»ã×Ü ¹ØÓÚд×÷

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

¿ªÐÄ
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

leiws

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

ľ³æÀË×Ó

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
ÄãÕâÀïµÄûÓùý¼¸ÖÖ...
È˵ķ³ÄÕ¾ÍÊǼÇÐÔÌ«ºÃ£¬Èç¹û¿ÉÒÔ°ÑËùÓÐʶ¼Íüµô£¬ÒÔºóÿһÈÕ¶¼ÊǸöпªÊ¼£¬Äã˵¶àºÃ¡£
4Â¥2012-01-31 22:50:59
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 4 ¸ö»Ø´ð
2Â¥2012-01-31 22:49:51
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ²ÄÁÏÀà284µ÷¼Á +40 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-08 48/2400 2026-04-10 23:28 by 314126402
[¿¼ÑÐ] 297Çóµ÷¼Á +11 ORCHID1 2026-04-10 12/600 2026-04-10 21:07 by cyh¡ª315
[¿¼ÑÐ] 287Çóµ÷¼Á +15 Fnhc 2026-04-07 21/1050 2026-04-10 19:09 by chemisry
[¿¼ÑÐ] 282£¬µçÆø¹¤³Ìרҵ£¬Çóµ÷¼Á£¬²»Ìôרҵ +9 jggshjkkm 2026-04-10 9/450 2026-04-10 14:55 by ÄæË®³Ë·ç
[¿¼ÑÐ] Çóµ÷¼Á ²ÄÁÏÓ빤³Ì 324·Ö ר˶ +19 ôæôæÒ»ÊéÉú 2026-04-10 21/1050 2026-04-10 11:41 by wp06
[¿¼ÑÐ] 08¹¤Ñ§ 309·ÖÇóµ÷¼Á +6 Yin DY 2026-04-08 6/300 2026-04-10 09:18 by Delta2012
[¿¼ÑÐ] 0854µ÷¼Á +10 ³¤¹­°Á 2026-04-09 11/550 2026-04-09 19:03 by ̽123
[¿¼ÑÐ] 367Çóµ÷¼Á +10 hffQAQ 2026-04-09 10/500 2026-04-09 18:06 by lijunpoly
[¿¼ÑÐ] 085404 293Çóµ÷¼Á +7 ÓÂÔ¶¿â°®314 2026-04-08 7/350 2026-04-09 16:02 by Öí»á·É
[˶²©¼ÒÔ°] ÓÐûÓÐѧУ²ÄÁÏרҵÊÕ¿çµ÷(Ò»Ö¾Ô¸085410) +5 momo(Éϰ¶°æ) 2026-04-06 8/400 2026-04-09 15:07 by onlyÖÜ
[¿¼ÑÐ] 311Çóµ÷¼Á +6 surte 2026-04-08 13/650 2026-04-09 14:00 by surte
[¿¼ÑÐ] 296Çóµ÷¼Á +3 Íô£¡£¿£¡ 2026-04-08 3/150 2026-04-08 22:00 by zhouyuwinner
[¿¼ÑÐ] Ò»Ö¾Ô¸»ª¶«Àí¹¤085601²ÄÁϹ¤³Ì303·ÖÇóµ÷¼Á +15 a1708 2026-04-06 15/750 2026-04-08 16:23 by luoyongfeng
[¿¼ÑÐ] »¯Ñ§0703-Ò»Ö¾Ô¸211-338·ÖÇóµ÷¼Á +10 vants 2026-04-05 11/550 2026-04-08 16:02 by screening
[¿¼ÑÐ] 283Çóµ÷¼Á +19 A child 2026-04-04 19/950 2026-04-08 14:26 by xingguangj
[¿¼ÑÐ] Çóµ÷¼Á +11 wwwwabcde 2026-04-07 11/550 2026-04-07 23:16 by JourneyLucky
[¿¼ÑÐ] 285Çóµ÷¼Á +15 ŶßϺôo 2026-04-04 17/850 2026-04-06 23:02 by chenzhimin
[¿¼ÑÐ] 338Çóµ÷¼Á +4 ÎÒÏëÉϰ¶ii 2026-04-05 4/200 2026-04-06 21:04 by ľ×Ó¾ý1218
[¿¼ÑÐ] 0855Çóµ÷¼Á²ÄÁÏ +11 ºìÌÒׯׯ 2026-04-04 12/600 2026-04-06 10:26 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 315Çóµ÷¼Á +5 £¦123456789 2026-04-05 5/250 2026-04-05 19:55 by nepu_uu
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û