Modeling male reproductive strategies and optimal mate number in an orb-web spider

2011 ◽  
Vol 23 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Clare C. Rittschof ◽  
Samantha A. Hilber ◽  
M. Scarlett Tudor ◽  
Colette M. St Mary
Keyword(s):  
Reproductive Strategies ◽  
Web Spider ◽  
Male Reproductive Strategies ◽  
Orb Web

scholarly journals Female major histocompatibility complex type affects male testosterone levels and sperm number in the horse ( Equus caballus )

2015 ◽  
Vol 282 (1807) ◽  
pp. 20150407 ◽  
Author(s):  
D. Burger ◽  
G. Dolivo ◽  
E. Marti ◽  
H. Sieme ◽  
C. Wedekind
Keyword(s):  
Major Histocompatibility Complex ◽  
Reproductive Strategies ◽  
Kin Recognition ◽  
Equus Caballus ◽  
Major Histocompatibility ◽  
Sperm Number ◽  
Sperm Velocity ◽  
Testosterone Levels ◽  
Histocompatibility Complex ◽  
Male Reproductive Strategies

Odours of vertebrates often contain information about the major histocompatibility complex (MHC), and are used in kin recognition, mate choice or female investment in pregnancy. It is, however, still unclear whether MHC-linked signals can also affect male reproductive strategies. We used horses ( Equus caballus ) to study this question under experimental conditions. Twelve stallions were individually exposed either to an unfamiliar MHC-similar mare and then to an unfamiliar MHC-dissimilar mare, or vice versa. Each exposure lasted over a period of four weeks. Peripheral blood testosterone levels were determined weekly. Three ejaculates each were collected in the week after exposure to both mares (i.e. in the ninth week) to determine mean sperm number and sperm velocity. We found high testosterone levels when stallions were kept close to MHC-dissimilar mares and significantly lower ones when kept close to MHC-similar mares. Mean sperm number per ejaculate (but not sperm velocity) was positively correlated to mean testosterone levels and also affected by the order of presentation of mares: sperm numbers were higher if MHC-dissimilar mares were presented last than if MHC-similar mares were presented last. We conclude that MHC-linked signals influence testosterone secretion and semen characteristics, two indicators of male reproductive strategies.

scholarly journals Direct and indirect bottom-up and top-down forces shape the abundance of the orb-web spider Argiope bruennichi

2012 ◽  
Vol 13 (8) ◽  
pp. 706-714 ◽  
Author(s):  
Odile T. Bruggisser ◽  
Nadine Sandau ◽  
Gilles Blandenier ◽  
Yvonne Fabian ◽  
Patrik Kehrli ◽  
...  
Keyword(s):  
Top Down ◽  
Bottom Up ◽  
Web Spider ◽  
Orb Web

scholarly journals Field observation on predation of an orb web spider (Araneae: Araneidae) by the corinnid sac spider, Corinnomma severum (Araneae: Corinnidae)

2020 ◽  
Vol 69 (2) ◽  
pp. 75-76
Author(s):  
Yuya Suzuki ◽  
Booppa Petcharad ◽  
Thanakorn Into ◽  
Akio Tanikawa
Keyword(s):  
Field Observation ◽  
Web Spider ◽  
Orb Web

Conspicuous colours in a polymorphic orb-web spider: evidence of predator avoidance but not prey attraction

2020 ◽  
Vol 169 ◽  
pp. 35-43
Author(s):  
Nathalia G. Ximenes ◽  
Felipe M. Gawryszewski
Keyword(s):  
Predator Avoidance ◽  
Web Spider ◽  
Orb Web ◽  
Prey Attraction

scholarly journals Reeling in the prey: fishing behaviour in an orb web spider

2019 ◽  
Vol 222 (24) ◽  
pp. jeb213751 ◽  
Author(s):  
Dinesh Rao ◽  
Horacio Tapia-McClung ◽  
Ajay Narendra
Keyword(s):  
Web Spider ◽  
Orb Web

Deciding where to settle: conspecific attraction and web site selection in the orb-web spider Nephilengys cruentata

2001 ◽  
Vol 62 (5) ◽  
pp. 1007-1012 ◽  
Author(s):  
Cynthia Schuck-Paim ◽  
Wladimir Jimenez Alonso
Keyword(s):  
Site Selection ◽  
Web Site ◽  
Conspecific Attraction ◽  
Web Spider ◽  
Orb Web
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