Mating Frequencies of Male Crab Spiders, Misumena Vatia (Araneae, Thomisidae)

Morse, Douglass H.

doi:10.1636/st06-13.1

Cited by 23 publications

(43 citation statements)

References 18 publications

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“…Although the observational regime did not permit continual surveillance, the spiderlings feed on prey (Erickson & Morse 1997;Morse 1999), especially conspecifics (this paper), for long periods, so that I would likely have regularly observed such events, had they frequently occurred. Observations of spiderlings feeding on other spiderlings likely represent cannibalism, since the spiderlings do not regularly scavenge dead organisms (Morse 2007).…”

Section: Discussionmentioning

confidence: 99%

Do cannibalism and kin recognition occur in just-emerged crab spiderlings?

Morse

2011

Journal of Arachnology

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Section: Discussionmentioning

confidence: 99%

Do cannibalism and kin recognition occur in just-emerged crab spiderlings?

Morse

2011

Journal of Arachnology

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“…Although not remated, about half of an experimental group of females produced a second clutch with a near-100% hatching success, and all obtained some viable offspring from their second clutch (Morse, 1994). Although not remated, about half of an experimental group of females produced a second clutch with a near-100% hatching success, and all obtained some viable offspring from their second clutch (Morse, 1994).…”

Section: Length Of Seasonmentioning

confidence: 94%

“…Occasionally, they will even construct and guard a second nest (0.8%), which, however, contains no eggs (pseudo nest). These clutches average over 65% of their body mass, far surpassing those of co-occurring species with roughly similar life styles (Morse, 1994), so they do not compromise clutch size against time. However, one of these clutches was infertile, and a nest predator broke up the other.…”

Section: Length Of Seasonmentioning

confidence: 97%

“…constrains the length of the reproductive period (Higgins, 2000), limiting the number of clutches that a female might lay, and hence the opportunity to augment fecundity. In fact, if removed from their nests and provisioned with food, they will readily produce a second clutch (Morse, 1994). Upon producing a first clutch and guarding it for various periods of time, a few early females will abandon it and commence to capture prey again, sometimes gaining considerable mass in the process.…”

Section: Length Of Seasonmentioning

confidence: 99%

“…However, some of the earliest reproducing females should become available for a second mating, whereas several of the males remain active, because these males can mate successfully until a few days before they die (Morse, 2007b). However, some of the earliest reproducing females should become available for a second mating, whereas several of the males remain active, because these males can mate successfully until a few days before they die (Morse, 2007b).…”

Section: Length Of Seasonmentioning

confidence: 99%

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Reproductive output of a female crab spider: the impacts of mating failure, natural enemies, and resource availability

Morse

2012

Entomologia Exp Applicata

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Female reproductive failure incorporates several variables, of which failure to mate is often an overlooked aspect. Adult female crab spiders, Misumena vatia (Clerck) (Araneae: Thomisidae), seldom fail to mate (maximum of 4.3%), even though meeting males infrequently because of low population densities, female‐skewed adult sex ratios, and failure to provide males with cues for locating them. Females mate with the first male they encounter, but in contrast to the ‘trade‐up’ strategy of many species in this situation, they usually appear to mate only once. During their short season most females that produce a clutch of eggs do not capture enough prey to reach maximum possible size and fecundity, resulting in a nearly 30% loss of potential production. Another ca. 20% fails to accumulate enough mass to lay a clutch. Nest predation and parasitism, primarily by an ichneumonid wasp and a phorid fly, destroy ca. 25% of the clutches. Thus, failure to mate exacts a much lower cost on adult female M. vatia than do several other factors. Mortality of juveniles greatly exceeds that of the adults, with losses of ca. 90% in the first winter and 35% of those surviving to their second winter.

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Between semelparity and iteroparity: Empirical evidence for a continuum of modes of parity

Hughes

2017

Ecology and Evolution

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The number of times an organism reproduces (i.e., its mode of parity) is a fundamental life‐history character, and evolutionary and ecological models that compare the relative fitnesses of different modes of parity are common in life‐history theory and theoretical biology. Despite the success of mathematical models designed to compare intrinsic rates of increase (i.e., density‐independent growth rates) between annual‐semelparous and perennial‐iteroparous reproductive schedules, there is widespread evidence that variation in reproductive allocation among semelparous and iteroparous organisms alike is continuous. This study reviews the ecological and molecular evidence for the continuity and plasticity of modes of parity—that is, the idea that annual‐semelparous and perennial‐iteroparous life histories are better understood as endpoints along a continuum of possible strategies. I conclude that parity should be understood as a continuum of different modes of parity, which differ by the degree to which they disperse or concentrate reproductive effort in time. I further argue that there are three main implications of this conclusion: (1) that seasonality should not be conflated with parity; (2) that mathematical models purporting to explain the general evolution of semelparous life histories from iteroparous ones (or vice versa) should not assume that organisms can only display either an annual‐semelparous life history or a perennial‐iteroparous one; and (3) that evolutionary ecologists should base explanations of how different life‐history strategies evolve on the physiological or molecular basis of traits underlying different modes of parity.

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Mating Frequencies of Male Crab Spiders, Misumena Vatia (Araneae, Thomisidae)

Cited by 23 publications

References 18 publications

Do cannibalism and kin recognition occur in just-emerged crab spiderlings?

Do cannibalism and kin recognition occur in just-emerged crab spiderlings?

Reproductive output of a female crab spider: the impacts of mating failure, natural enemies, and resource availability

Between semelparity and iteroparity: Empirical evidence for a continuum of modes of parity

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