Courtship and Spawning Behavior in the California Sheephead, Semicossyphus Pulcher (Pisces: Labridae)

Adreani, Mia S.; Erisman, Brad; Warner, Robert R.

doi:10.1023/b:ebfi.0000043177.98895.f7

Cited by 35 publications

(31 citation statements)

References 10 publications

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“…Warner (1975) found that Semicossyphus pulcher undergoing sexual transition from female to male at Catalina Island ranged between 24 and 32 cm SL. Therefore, some females may search for new areas in which to reside during their transition to males or, since there is a dominance hierarchy in this species (Cowen 1990, Adreani et al 2004, smaller fish may get pushed out of optimal habitat.…”

Section: Site Fidelitymentioning

confidence: 99%

“…Koch & Wieser (1983) found that the roach Rutilus rutilus exhibited a reduction in swimming activity during seasonal gonadal development that completely compensated for the cost of the production of gonadal tissue. Semicossyphus pulcher may also limit their rate of movement in order to reduce energy expenditure, allocating more into gonadal growth (Koch & Wieser 1983, Baras 1995 and/or to remain within spawning territories (Adreani et al 2004).…”

Section: Seasonal Movement Patternsmentioning

confidence: 99%

“…Although it is unclear whether Semicossyphus pulcher consistently maintain territories similar to other labrids, it has been observed that males become increasingly territorial throughout the day during periods of spawning activity (Adreani et al 2004). Since spawning activity occurs around sunset, fish may only show differences in space utilization for short periods (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…late afternoon) on particular days during the spawning season (June to September). Because of this behavior it is possible that larger-scale movement patterns differ between the reproductive and nonreproductive seasons, when sequestering energy for gonadal development, or while fish are setting up spawning territories (Warner 1975, Adreani et al 2004. Potential shifts in home range or expansion of home ranges during breeding seasons may cause fish protected within MPAs to cross reserve boundaries more often during those periods, potentially making them more susceptible to fishing-related mortality.…”

Section: Introductionmentioning

confidence: 99%

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Site fidelity and seasonal movement patterns of adult California sheephead Semicossyphus pulcher (Labridae): an acoustic monitoring study

Topping¹,

Lowe²,

Caselle³

2006

Mar. Ecol. Prog. Ser.

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The California sheephead Semicossyphus pulcher Ayres (Labridae) is a temperate, rocky-reef/kelp-bed fish that is sought by recreational and commercial fishermen. Long-term acoustic monitoring was used to ascertain site fidelity and seasonal movement patterns of S. pulcher. We implanted 16 adult (24 to 36 cm standard length) fish with long-term (~1 yr) acoustic transmitters and their presence and movement patterns were monitored in the Catalina Marine Science Center Marine Life Reserve using an acoustic receiver array. A method was developed that explained some of the variability in detection frequencies. A negative relationship between detection frequency and activity (rate of movement) was found for S. pulcher moving within the array. Most fish exhibited high site fidelity to the general area of the reserve, with 13 of the 16 fish detected spending an average of 99 ± 2% of their total days at liberty in the study area, with a mean of 90 ± 9% of total residence time spent within a 600 m core area. However, these fish showed some variability in area use between months, exhibiting periods of expansion in their range. Fish also tended to increase activity as seasonal water temperature increased. These expanded movements resulted in some fish crossing the reserve boundary for extended periods or leaving the reserve permanently.

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Section: Site Fidelitymentioning

confidence: 99%

Section: Seasonal Movement Patternsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Site fidelity and seasonal movement patterns of adult California sheephead Semicossyphus pulcher (Labridae): an acoustic monitoring study

Topping¹,

Lowe²,

Caselle³

2006

Mar. Ecol. Prog. Ser.

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“…Females and males were present during the summer breeding season, and females, males, and transitional individuals were identified during the nonbreeding season (Warner 1975). Based on these observations, fisheries biologists and commercial and sport fishers have used morphology to identify the sex of California sheephead (Cowen 1990; Adreani et al 2004; Topping et al 2006; Hamilton et al 2007). However, the idea that California sheephead can be accurately sexed using external morphology has not been confirmed in the current populations with potentially altered population structures as a result of increased fishing pressure.…”

mentioning

confidence: 99%

Use of Morphology and Endocrinology to Predict Sex in California Sheephead: Evidence of Altered Timing of Sex Change at Santa Catalina Island, California

et al. 2010

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To estimate the health of the California sheephead Semicossyphus pulcher fishery, a 2004 stock assessment used available biological data that were collected decades prior to an increase in fishing pressure. However, a recent study has found that sex ratios, growth rates, survivorship, and average sizes of females and males have changed in response to size-selective fishing in some California sheephead populations. To better understand the potential changes in protogynous California sheephead, this study sought to determine (1) whether external morphology was still an accurate method of predicting sex in sexually dimorphic California sheephead at Santa Catalina Island, California, and (2) whether nonlethal blood sampling and plasma hormone analysis could be used to predict sex for future stock assessments. Sex was determined using gonadal histology and compared with several specific external morphological characters. Estradiol and 11-ketotestosterone plasma concentrations were also compared across sexed individuals. The rate of error when using external morphology alone to predict sex was 58%. In contrast, sex steroid concentrations varied significantly across sexes; estradiol concentrations were significantly greater in females than in transitioning and male individuals during the breeding season, and 11-ketotestosterone concentrations were significantly lower among females. Gonadal histology showed that 21% of the fish caught during the breeding season were classified as transitional, in stark contrast to historical data. The inability to accurately predict sex using external morphology alone suggests that commonly used methods of surveying California sheephead populations (e.g., diver surveys) may be inaccurate. Nonlethal blood sampling and subsequent plasma hormone analysis may offer an alternative method for assessing sex in California sheephead. Because California sheephead are not reproductively functional during transition and because we found such a large proportion in transition during the breeding season at Santa Catalina Island, we believe there is a need for continued assessment of the reproductive potential in this population of California sheephead.

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Size isn't everything: movements, home range, and habitat preferences of eastern blue gropers (Achoerodus viridis) demonstrate the efficacy of a small marine reserve

Lee

Huveneers

Macdonald³

et al. 2014

Aquatic Conservation

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Marine protected areas (MPAs) are important conservation tools, however, efficacy can, in part, be a function of their size in relation to the home range of the target species. The eastern blue groper, Achoerodus viridis, is a long‐lived, protogynous hermaphrodite, and an ‘iconic’ marine species in eastern Australia, with several MPAs having been established specifically for their protection. Site fidelity, habitat use, and home range size were assessed for 29 adult eastern blue gropers monitored for up to 374 days using passive acoustic telemetry within and around a small marine reserve. The fish exhibited long residency times and no movement was recorded between adjacent reefs, suggesting sand acts as a natural barrier to movement. Core ranges were calculated using 50% kernel utilization distributions (KUD) and estimated between 0.005 and 0.092 km2. Males had larger core ranges than females or fish of indeterminate sex. There was no statistical difference between the breeding/non‐breeding seasons. Home ranges were calculated using 95% KUD and ranged between 0.03 and 0.54 km2. Home range size was largest for males and significantly larger for all sexes in the breeding season. Fish tagged in the ‘no‐take’ area of the MPA had smaller home ranges than fish tagged in the area where fishing is permitted. This study indicates that even relatively small MPAs can provide effective protection for adult eastern blue groper, supporting the proposition that large reef dwellers with long residency times can be used as flagship species to gain public support for the designation of MPAs. Copyright © 2014 John Wiley & Sons, Ltd.

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Courtship and Spawning Behavior in the California Sheephead, Semicossyphus Pulcher (Pisces: Labridae)

Cited by 35 publications

References 10 publications

Site fidelity and seasonal movement patterns of adult California sheephead Semicossyphus pulcher (Labridae): an acoustic monitoring study

Site fidelity and seasonal movement patterns of adult California sheephead Semicossyphus pulcher (Labridae): an acoustic monitoring study

Use of Morphology and Endocrinology to Predict Sex in California Sheephead: Evidence of Altered Timing of Sex Change at Santa Catalina Island, California

Size isn't everything: movements, home range, and habitat preferences of eastern blue gropers (Achoerodus viridis) demonstrate the efficacy of a small marine reserve

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