Tỷ lệ lipid liên quan đến kích thước cơ thể nhưng không liên quan đến nhiệm vụ ở ong bumble Bombus impatiens

Zeitschrift für vergleichende Physiologie - Tập 197 - Trang 1097-1104 - 2011
Margaret J. Couvillon1,2, Jennifer M. Jandt1, Jennifer Bonds1, Bryan R. Helm1, Anna Dornhaus1
1Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, USA
2Laboratory of Apiculture and Social Insects, School of Life Sciences, University of Sussex, Brighton, UK

Tóm tắt

Trong một số loài sinh vật sống theo nhóm, công việc được chia sẻ giữa các cá thể. Sự phân bổ này cho các nhiệm vụ cụ thể thường ổn định và được dự đoán bởi sinh lý cá nhân. Côn trùng xã hội là những mô hình sinh học tuyệt vời để điều tra mối liên hệ giữa sinh lý và hành vi cá nhân, vì phân chia lao động là một đặc điểm quan trọng trong các đàn, và sinh lý cá nhân khác nhau giữa những cá thể có liên quan chặt chẽ trong đàn. Các nghiên cứu trước đây đã điều tra các yếu tố quan trọng trong việc xác định khả năng của một cá thể, so với các bạn cùng tổ, thực hiện một số nhiệm vụ nhất định. Một trong những nhiệm vụ đó là tìm kiếm thức ăn. Tình trạng cơ thể (tức là, tỷ lệ lipid phần trăm) đã được chứng minh là ảnh hưởng đến khả năng tìm kiếm thức ăn ở ong mật và kiến, với những cá thể gầy hơn có khả năng cao hơn để trở thành những người tìm kiếm thức ăn. Liệu đây có phải là một xu hướng chung ở tất cả các loài côn trùng xã hội không? Ở đây, chúng tôi báo cáo dữ liệu phân tích sinh lý cá nhân, cụ thể là tỷ lệ lipid phần trăm, của ong bumble (Bombus impatiens) mà chúng tôi cũng phân tích dữ liệu hành vi nhiệm vụ. Ong bumble cũng bất thường giữa các loài ong xã hội ở chỗ kích thước của những con ong thợ có thể thay đổi rộng rãi. Ngạc nhiên thay, chúng tôi phát hiện rằng, không giống như các loài côn trùng xã hội khác, tỷ lệ lipid không liên quan đến khả năng thực hiện nhiệm vụ. Thay vào đó, kích thước cơ thể gần như dự đoán chính xác lượng lipid tương đối của cá thể, với những con ong thợ nhỏ hơn có tỷ lệ mỡ cao hơn so với những con ong thợ lớn hơn.

Từ khóa

#côn trùng xã hội #tỷ lệ lipid #phân chia lao động #ong bumble #hành vi tìm kiếm thức ăn

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