Egg sac damage and previous egg sac production influence truncated parental investment in the wolf spider, Pardosa milvina

Ethology ◽  
2020 ◽  
Vol 126 (12) ◽  
pp. 1111-1121
Author(s):  
Megan F. Marchetti ◽  
Matthew H. Persons
Keyword(s):  
Parental Investment ◽  
Wolf Spider ◽  
Pardosa Milvina

scholarly journals THE EFFECTS OF MOISTURE AND HEAT ON THE EFFICACY OF CHEMICAL CUES USED IN PREDATOR DETECTION BY THE WOLF SPIDER PARDOSA MILVINA (ARANEAE, LYCOSIDAE)

2005 ◽  
Vol 33 (3) ◽  
pp. 857-861 ◽  
Author(s):  
Shawn M. Wilder ◽  
Jill DeVito ◽  
Matthew H. Persons ◽  
Ann L. Rypstra
Keyword(s):  
Chemical Cues ◽  
Wolf Spider ◽  
Predator Detection ◽  
Pardosa Milvina

The wolf spider Pardosa milvina detects predator threat level using only vibratory cues

Behaviour ◽  
2016 ◽  
Vol 153 (2) ◽  
pp. 159-173 ◽  
Author(s):  
Michael I. Sitvarin ◽  
Shira D. Gordon ◽  
George W. Uetz ◽  
Ann L. Rypstra
Keyword(s):  
Predation Risk ◽  
Wolf Spider ◽  
Multiple Modalities ◽  
Predator Cues ◽  
Pardosa Milvina ◽  
Threat Level ◽  
Predator Threat

Predators may inadvertently signal their presence and threat level by way of signals in multiple modalities. We used a spider, Pardosa milvina, known to respond adaptively to chemotactile predator cues (i.e., silk, faeces and other excreta) to evaluate whether it could also discriminate predation risk from isolated vibratory cues. Vibrations from its prey, conspecifics, and predators (Tigrosa helluo and Scarites quadriceps) were recorded and played back to Pardosa. In addition, we recorded predator vibrations with and without access to chemotactile cues from Pardosa, indicating the presence of prey. Pardosa did not appear to discriminate between vibrations from prey or conspecifics, but the response to predators depended on the presence of cues from Pardosa. Vibrations from predators with access to chemotactile cues from prey induced reductions in Pardosa activity. Predator cues typically occur in multiple modalities, but prey are capable of imperfectly evaluating predation risk using a limited subset of information.

scholarly journals The effects of predation risk on female silk deposition and male response to predator-cued conspecifics in the wolf spider, Pardosa milvina (Araneae: Lycosidae)

2010 ◽  
Vol 38 (3) ◽  
pp. 393-397 ◽  
Author(s):  
Alexander L. Sweger ◽  
Michael Marr ◽  
Adam Satteson ◽  
Ann L. Rypstra ◽  
Matthew H. Persons
Keyword(s):  
Predation Risk ◽  
Wolf Spider ◽  
Male Response ◽  
Pardosa Milvina

Cannibalism and density-dependent mortality in the wolf spider Pardosa milvina (Araneae: Lycosidae)

2003 ◽  
Vol 81 (8) ◽  
pp. 1293-1297 ◽  
Author(s):  
Christopher M Buddle ◽  
Sean E Walker ◽  
Ann L Rypstra
Keyword(s):  
Population Regulation ◽  
Wolf Spider ◽  
Field Studies ◽  
Agricultural Fields ◽  
Eastern North America ◽  
Wolf Spiders ◽  
Conspecific Density ◽  
Pardosa Milvina ◽  
Density Dependent Mortality ◽  
Dependent Mortality

Cannibalism is an important regulating mechanism in many terrestrial and aquatic arthropod communities. Spider ecologists have suggested that cannibalism with wolf spiders (Araneae: Lycosidae) in the genera Schizocosa and Pardosa is common and can act in population regulation. This hypothesis was tested with the species Pardosa milvina (Hentz), a small wolf spider that shows high densities in disturbance-driven ecosystems, including agricultural fields, throughout eastern North America. Under laboratory conditions, cannibalism was more common between pairs of P. milvina with the greatest differences in both mass and size. Field studies, in which we stocked natural densities, 2× natural densities, and 4× natural densities of P. milvina in enclosures placed in soybean fields, revealed that survival was lowest when conspecific density was highest, and larger individuals prevailed under high-density conditions. Thus, cannibalism likely plays an important role in governing populations of P. milvina, and the generality about the prevalence and importance of cannibalism with wolf spiders is supported.

Leg Autotomy in the Wolf Spider Pardosa milvina: A Common Phenomenon with Few Apparent Costs

2001 ◽  
Vol 146 (1) ◽  
pp. 153-160 ◽  
Author(s):  
MICHAEL A. BRUESEKE ◽  
ANN L. RYPSTRA ◽  
SEAN E. WALKER ◽  
MATTHEW H. PERSONS
Keyword(s):  
Wolf Spider ◽  
Common Phenomenon ◽  
Pardosa Milvina
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