Recovery and Germination of Malus sieversii (Ledeb.) M. Roem. (Rosaceae) Seeds after Ingestion by Cattle, Horses, and Sheep

Jiang Xu, Zongfang Zhang, Shilin Bai, Yaya Lv, Xiaojun Shi () and Dunyan Tan ()
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Jiang Xu: College of Life Sciences, Xinjiang Agricultural University, Urumqi 830052, China
Zongfang Zhang: College of Life Sciences, Xinjiang Agricultural University, Urumqi 830052, China
Shilin Bai: College of Life Sciences, Xinjiang Agricultural University, Urumqi 830052, China
Yaya Lv: College of Life Sciences, Xinjiang Agricultural University, Urumqi 830052, China
Xiaojun Shi: College of Life Sciences, Xinjiang Agricultural University, Urumqi 830052, China
Dunyan Tan: College of Life Sciences, Xinjiang Agricultural University, Urumqi 830052, China

Sustainability, 2022, vol. 14, issue 21, 1-13

Abstract: Livestock can transport seeds long distances by endozoochory due to their large home range and capacity to move among different habitats. However, differences in digestive system and body size between different livestock species may result in variations in the dispersal of domestic livestock. To test such effects, we explore the effects of endozoochorous seed dispersal of Malus sieversii by three livestock: cattle, horse, and sheep in the Ili Botany Garden, northwest of China. We collected seeds of M. sieversii and fed them to cattle, horses and sheep. After feeding, we collected all the seeds from their feces every 24 h for 6 days and determined the seed recovery percent, mean retention time, and germination percent of seeds after the effects of the digestive tracts of those three livestock species. Seed recovery percent in three livestock species feces were cattle (CS) (54.05%) > horse (HS) (4.83%) > sheep (SS) (0.45%). The mean retention time of seeds in the digestive tract of cattle, horses and sheep were 53 h, 57 h, and 45 h. The seed weight and seed coat thickness decreased significantly after the treatment of the digestive tract. After 80 days cold stratification of seeds, the germination percent of CK, CS, and HS were 61%, 69%, and 18%, respectively. The results indicated cattle is an effective seed disperser of M. sieversii , with a recovery and germination percent in endozoochorous seed dispersal by cattle than that of horse and sheep. Our findings may also provide a theoretical basis about regarding seed-centric grazing management decisions and keeping horse and sheep out of pastures during the fruit of M. sieversii shedding period.

Keywords: endozoochory; pasture management; seed morphology; gut retention time; livestock (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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