在奉贤潮滩样地调查的基础上,通过开展室内喂食实验分析了天津厚蟹(Helice tientsinensis)与褶痕相手蟹(Sesarma plicata)两种优势蟹类对典型盐沼植物互花米草(Spartina alterniflora)和芦苇(Phragmites australis)的摄食偏好性及相关影响因子,为进一步揭示蟹类摄食作用下互花米草和芦苇竞争生长的控制机制提供参考.结果显示:两种蟹对不同植株部位的偏好性均为叶片 > 细根 > 茎秆;但对不同植物的偏好有所差异,天津厚蟹偏好摄食芦苇叶片,而褶痕相手蟹更偏好互花米草叶片;对茎秆和细根的摄食量均是互花米草 > 芦苇.蟹类的摄食偏好除了受蟹重和种类的影响,还与植物中的粗蛋白质含量成正相关.
Based on an investigation of Fengxian tidal flats, this study analyzed the feeding preference and influencing factors of two dominant crabs-Helice tientsinensis and Sesarma plicata-on typical salt marsh plants Spartina alterniflora and Phragmites australis via an indoor feeding experiment. The study provides a reference to further understanding of the control mechanisms for competition between Spartina and Phragmites. The results showed that the preference of the two crabs for different plant organs was:Leaves > Roots > Stalk. However, the preference varies across different plants; namely, Helice tientsinensis prefers Phragmites leaves, while Sesarma plicata prefers Spartina leaves. The consumption of stalk and roots of Spartina is higher than Phragmites. In addition to crab weight and species, the feeding preference is also positively correlated with the content of crude protein in plants.
[1] GREEN P T, DOWD D J O, LAKE P S. Control of seedling recruitment by land crabs in rain forest on a remote oceanic island[J]. Ecology, 1997, 78:2474-2486.
[2] GUEBAS F D, KAIRO J G, JAYATISSA L P, et al. An ordination study to view vegetation structure dynamics in disturbed and undisturbed mangrove forests in Kenya and Sri Lanka[J]. Plant Ecology, 2002, 161:123-135.
[3] TEAL J M. Energy flow in the salt marsh ecosystem of Georgia[J]. Ecology, 1962, 43(4):614-624.
[4] ODUM E P, BARRETT G W. Fundamentals of Ecology[M]. Philadelphia:Saunders, 1971.
[5] MALKINSON D, TIELBOERGER K. What does the stress-gradient hypothesis predict? Resolving the discrepancies[J].Synthesising Ecology, 2010, 119(10):1546-1552.
[6] BADANO E I, PEREZ D, VERGARA C H. Love of nurse plant is not enough for restoring oak forests in a seasonally dry tropical environment[J]. Restoration Ecology, 2009, 17(5):571-576.
[7] PADILLA F M, PUGNAIRE F I. The role of nurse plants in the restoration of degraded environments[J]. Frontiers in Ecology and the Environment, 2006, 4(4):196-202.
[8] BERTNESS M D, ELLISON A M. Determinants of pattern in a New England salt marsh plant community[J]. Ecological Monographs, 1987, 57(2):129.
[9] CALLAWAY R M, KIKODZE D, CHIBOSHVILI M. Unpalatable plants protect neighbors from grazing and increase plant community diversity[J]. Ecology, 2005, 86(7):1856-1862.
[10] QIN H M, CHU T J, XU W. Effects of invasive cordgrass on crab distributions and diets in a Chinese salt marsh[J]. Marine Ecology Progress Series, 2010, 415:177-187.
[11] KURODA M. Factors influencing coexistence of two brachyuran crabs Helicet fidens and Parasesarma plicatum in an estuarine salt marsh[J]. Journal of Crustacean Biology, 2005, 25:146-153.
[12] 盛强. 崇明东滩不同高程上蟹类对植物种间关系的影响[D]. 上海:复旦大学, 2011.
[13] 王金庆. 长江口盐沼优势蟹类的生境选择与生态系统工程师效应[D]. 上海:复旦大学, 2008.
[14] ADAM P. Salt Marsh Ecology[M]. New York:Cambridge University Press, 1990.
[15] BERTNESS M D, CALLAWAY R. Positive interactions in communities[J]. Trends in Ecology & Evolution, 1994(9):191-193.
[16] HE Q, SILLIMAN B R. Consumer control as a common driver of coastal vegetation worldwide[J]. Ecological Monographs, 2016, 86:278-294.
[17] BERTNESS M D, SILLIMAN B R. Consumer control of salt marshes driven by human disturbance[J]. Conservation Biology, 2008, 22:618-623.
[18] ALTIERI A H, BERTNESS M D, COVERDALE T C, et al. A trophic cascade triggers collapse of a salt marsh ecosystem with intensive recreational fishing[J]. Ecology, 2012, 93:1402-1410.
[19] HOLDREDGE C, BERTNESS M D, ALTIERI A H. Role of crab herbivory in die-off of New England salt marshes[J]. Conservation Biology, 2009, 23:672-679.
[20] 杨泽华, 童春富, 陆健健.长江口湿地三个演替阶段大型底栖动物群落特征[J]. 动物学研究, 2006, 27(4):411-418.
[21] CRICHTON O W. Marsh crab:Intertidal tunnel-maker and grasseater[J]. Estuarine Bulletin, 1960(5):3-10.
[22] WANG J Q, ZHANG X D, NIE M. Exotic Spartina alterniflora provides compatible habitats for native estuarine crab Sesarma dehaani in the Yangtze River Estuary[J]. Ecological Engineering, 2008, 34(1):57-64.
[23] BORTOLUS A P, IRIBARNEO. Crab-mediated phenotypic changes in Spartina densiflora Brong[J]. Estuarine Coastal and Shelf Science, 2004, 59:97-107.
[24] COVERDALE T C, ALTIERI A H, BERTNESS M D. Belowground herbivory increases vulnerability of New England salt marshes to die-off[J]. Ecology, 2012, 93(9):2085-2094.
[25] KYOMO J. Variations in the feeding habits of males and females of the crab Sesarma intermedia[J]. Marine Ecology Progress, 1992, 83:151-155.
[26] BROUSSEAU D J, FILIPOWICZ A, BAGLIVO J A. Laboratory investigations of the effects of predator sex and size on prey selection by the Asian crab Hemigrapsus sanguineus[J]. Journal of Experimental Marine Biology and Ecology, 2001, 262:199-210.
[27] KWOK P W, LEE S Y. The growth performances of two mangrove crabs Chiromanthes bidens and Parasesarma plicata under different leaf litter diets[J]. Hydrobiologia, 1995, 295:141-148.
[28] CAMILLERI J. Leaf choice by crustaceans in a mangrove forest in Queensland[J]. Marine Biology, 1989, 102(4):453-459.
[29] KWOK P W, LEE S Y. The growth performances of two mangrove crabs Chiromanthes bidens and Parasesarma plicata under different leaf litter diet[J]. Hydrobiologia, 1995, 295(3):141-148.
[30] 纪一帆, 吴宝镭, 丁玉华, 等. 大丰野放麋鹿生境中芦苇和互花米草的营养对比分析[J].生态学杂志, 2011, 30(10):2240-2244.
[31] 闫志坚, 高雪峰, 高天明.6种优势固沙植物饲用养分含量及动态研究[J].饲料工业, 2007, 8(11):21-23.