Effects of weight loading on flight performance and survival of palatable Neotropical Anartia fatima

Previous studies show that the position of centre of body mass (cmbody) and the ratio of flight muscle to total body mass (flight muscle ratio, FMR) are good predictors of flight speed and manoeuvrability in butterflies. However, cmbody, FMR, and related morphometric traits are strongly correlated phenotypically, making it difficult to identify the causal determinants of flight performance. By experimentally gluing weights that amounted to 15% body weight to a palatable Neotropical butterfly species (Anartia fatima), we tested the effects of altering FMR and repositioning cmbodyon two measures of flight performance: flight speed and the ability to evade capture. We then tested their effects on survival in a natural setting. Flight performance studies detected no significant differences in airspeed or evasive flight ability among unweighted controls, weighted-loaded butterflies (WL), and those withcmbody positioned further posterior (CM). In two mark-release-recapture experiments, survival of treatment groups did not differ, but males survived longer than females. In one experiment, WL and CM butterflies were recaptured more frequently than controls, whereas the probability of recapture for females was higher than that for males in the second experiment. When significant, results for recapture were consistent with a causal relationship between FMR and flight speed. Presumably, a decrease in flight speed was due to a reduction in muscle mass-specific power output in the weighted butterflies. However, the results did not support a relationship between manoeuvrability and cmbody.

[1]  A. Wallace.  I. On the Phenomena of Variation and Geographical Distribution as illustrated by the Papilionidæ of the Malayan Region. , 1865 .

[2]  R. Chapman.  The Insects: Structure and Function , 1969 .

[3]  S. J. Arnold,et al.  Morphology, Performance and Fitness , 1983 .

[4]  P. McCullagh,et al.  Generalized Linear Models , 1984 .

[5]  C. Ellington.  The Aerodynamics of Hovering Insect Flight. III. Kinematics , 1984 .

[6]  C. Ellington.  The Aerodynamics of Hovering Insect Flight. I. The Quasi-Steady Analysis , 1984 .

[7]  C. Ellington.  THE AERODYNAMICS OF HOVERING INSECT FLIGHT. V. A VORTEX THEORY , 1984 .

[8]  C. Ellington.  The Aerodynamics of Hovering Insect Flight. II. Morphological Parameters , 1984 .

[9]  P. Chai.  Field observations and feeding experiments on the responses of rufous‐tailed jacamars (Galbula ruficauda) to free‐flying butterflies in a tropical rainforest , 1986 .

[10]  J. Marden.  Maximum Lift Production During Takeoff in Flying Animals , 1987 .

[11]  John J. Videler,et al.  INDOOR FLIGHT EXPERIMENTS WITH TRAINED KESTRELS I. FLIGHT STRATEGIES IN STILL AIR WITH AND WITHOUT ADDED WEIGHT , 1988 .

[12]  K. Nagy,et al.  TRANSMITTER LOADS AFFECT THE FLIGHT SPEED AND METABOLISM OF HOMING PIGEONS , 1988 .

[13]  P. McCullagh,et al.  Generalized Linear Models , 1992 .

[14]  M. R. Fuller,et al.  Climbing performance of Harris' hawks ( Parabuteo unicinctus ) with added load: implications for muscle mechanics and for radiotracking , 1989 .

[15]  James R. Karr,et al.  Birds of four Neotropical Forests , 1990 .

[16]  B. Crespi.  Measuring the Effect of Natural Selection on Phenotypic Interaction Systems , 1990, The American Naturalist.

[17]  R. B. Srygley,et al.  Predation and the Flight, Morphology, and Temperature of Neotropical Rain-Forest Butterflies , 1990, The American Naturalist.

[18]  R. B. Srygley,et al.  Predation and the Elevation of Thoracic Temperature in Brightly Colored Neotropical Butterflies , 1990, The American Naturalist.

[19]  J. Rayner,et al.  Addition of Artificial Loads to Long-Eared Bats Plecotus Auritus: Handicapping Flight Performance , 1991 .

[20]  D. Berrigan.  Lift production in the flesh fly, Neobellieria (=Sarcophaga) bullata Parker , 1991 .

[21]  James H. Marden,et al.  Aerial Predation and Butterfly Design: How Palatability, Mimicry, and the Need for Evasive Flight Constrain Mass Allocation , 1991, The American Naturalist.

[22]  Anders Hedenström,et al.  Flight performance in relation to fuel load in birds , 1992 .

[23]  J. Blake.  Temporal Variation in Point Counts of Birds in a Lowland Wet Forest in Costa Rica , 1992 .

[24]  R. B. Srygley,et al.  CORRELATIONS OF THE POSITION OF CENTER OF BODY MASS WITH BUTTERFLY ESCAPE TACTICS , 1993 .

[25]  I. Cuthill,et al.  The ecological costs of avian fat storage. , 1993, Philosophical transactions of the Royal Society of London. Series B, Biological sciences.

[26]  R. B. Srygley.  Locomotor Mimicry in Butterflies? The Associations of Positions of Centres of Mass among Groups of Mimetic, Unprofitable Prey , 1994 .

[27]  I. Cuthill,et al.  Experimental investigations of mass-dependent predation risk in the European starling, Sturnus vulgaris , 1994, Animal Behaviour.

[28]  Dudley,et al.  FLIGHT PHYSIOLOGY OF NEOTROPICAL BUTTERFLIES: ALLOMETRY OF AIRSPEEDS DURING NATURAL FREE FLIGHT , 1994, The Journal of experimental biology.

[29]  N. Ohsaki.  Preferential predation of female butterflies and the evolution of batesian mimicry , 1995, Nature.

[30]  J. Lynch.  Effects of Point Count Duration, Time-of-Day, and Aural Stimuli on Detectability of Migratory and Resident Bird Species in Quintana Roo, Mexico , 1995 .

[31]  J. Kingsolver,et al.  ESTIMATING SELECTION ON QUANTITATIVE TRAITS USING CAPTURE‐RECAPTURE DATA , 1995, Evolution; international journal of organic evolution.

[32]  J. Kingsolver.  VIABILITY SELECTION ON SEASONALLY POLYPHENIC TRAITS: WING MELANIN PATTERN IN WESTERN WHITE BUTTERFLIES , 1995, Evolution; international journal of organic evolution.

[33]  J. Kingsolver.  Experimental Manipulation of Wing Pigment Pattern and Survival in Western White Butterflies , 1996, The American Naturalist.

[34]  R. B. Srygley,et al.  Red‐wing blackbird reproductive behaviour and the palatability, flight performance, and morphology of temperate pierid butterflies (Colias, Pieris, and Pontia) , 1998 .

[35]  J. Kingsolver.  EXPERIMENTAL ANALYSES OF WING SIZE, FLIGHT, AND SURVIVAL IN THE WESTERN WHITE BUTTERFLY , 1999, Evolution; international journal of organic evolution.

[36]  R. B. Srygley,et al.  Experimental analyses of body size, flight and survival in pierid butterflies. , 2000 .

[37]  W. D. Robinson,et al.  Forest bird community structure in central panama : Influence of spatial scale and biogeography , 2000 .