Sex-bias and timing of natal dispersal in cooperatively breeding Puff-throated Bulbuls Alophoixus pallidus

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

GEORGE ANDREW GALE

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Sankamethawee W., Hardesty B.D., Gale G.A.

ผู้เผยแพร่: Wiley: No OnlineOpen / Springer Verlag (Germany)

ปีที่เผยแพร่ (ค.ศ.): 2010

วารสาร: Journal für Ornithologie (0021-8375)

Volume number: 151

Issue number: 4

หน้าแรก: 779

หน้าสุดท้าย: 789

จำนวนหน้า: 11

นอก: 0021-8375

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-77956671574&doi=10.1007%2fs10336-010-0511-2&partnerID=40&md5=41b7786d694d4e3615696e1c050124c0

ภาษา: English-Great Britain (EN-GB)

ดูในเว็บของวิทยาศาสตร์ | ดูบนเว็บไซต์ของสำนักพิมพ์ | บทความในเว็บของวิทยาศาสตร์

บทคัดย่อ

While natal dispersal can have a significant impact on population dynamics, it is typically difficult to quantify. We investigated timing of natal dispersal of the cooperatively breeding Puff-throated Bulbul Alophoixus pallidus in a tropical evergreen forest by modelling the probability of staying in or dispersing from their natal territory whilst taking into account the effects of sex, group size, and the presence of helper(s). Birds did not disperse until the beginning of and during the breeding season following the hatching year. Dispersal was strongly female-biased both in frequency and distance: Most females (95%) dispersed away from their natal territories, and of those relocated, traversed 2-7 territories. In contrast, 50% of males remained in the natal territory as helpers in their second year, while relocated dispersing males crossed 1-2 territories. Natal dispersal was not influenced by either group size or the presence of helpers. Males that fledged earlier in the breeding season exhibited higher rates of philopatry than the males that fledged later, but no correlation between fledging date and philopatry was observed in females. The probability of staying in the natal territory during the second year was 0.58 ฑ 0.14 SE and 0.05 ฑ 0.04 for males and females, respectively. These findings may add to our understanding of how natal dispersal can reflect social patterns and kin structure in cooperative breeding species from a little-studied tropical forest region. ฉ 2010 Dt. Ornithologen-Gesellschaft e.V.

คำสำคัญ

Natal dispersal, Sex-biased dispersal