Fecundity and Egg Diameter of Primiparous and Multiparous Blue Crab Callinectes sapidus (Brachyura: Portunidae) in Mississippi Waters

Graham, Darcie; Perry, Harriet M.; Biesiot, Patricia M.; Fulford, Richard S.

doi:10.1163/193724011x615325

Cited by 31 publications

(24 citation statements)

References 39 publications

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“…; Graham et al. ). Changes during brooding significantly affect the accuracy of fecundity estimates.…”

Section: Discussionmentioning

confidence: 97%

“…Bert et al (2016a) assessed fecundity for crab egg masses in all developmental stages, whereas the present study used only newly extruded, orange egg masses. Crustaceans often have considerable egg loss and egg diameter changes during brooding between the first egg extrusion and larval release due to embryonic growth, loss of unviable eggs, disease, and predation (Darnell et al 2009;Graham et al 2012). Changes during brooding significantly affect the accuracy of fecundity estimates.…”

Section: Discussionmentioning

confidence: 99%

“…; Graham et al. ). The stone crab fishing season (October 15–May 15) was implemented in 1985 under the Florida Administrative Code (Chapter 46‐13) to protect spawning females from harvest and eliminate fishing mortality during the peak of the spawning season (Savage and Sullivan ).…”

mentioning

confidence: 97%

“…Upon extrusion, the fertlized eggs are bright orange and progress to dark gray as the embryos develop. During the 11-to 14-d period of embryonic development (Binford 1912;Porter 1960), the eggs grow in diameter, and the egg mass is vulnerable to losses stemming from nonviable eggs, predation, and disease (Darnell et al 2009;Graham et al 2012). The stone crab fishing season (October 15-May 15) was implemented in 1985 under the Florida Administrative Code (Chapter 46-13) to protect spawning females from harvest and eliminate fishing mortality during the peak of the spawning season (Savage and Sullivan 1978).…”

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confidence: 99%

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Fecundity Assessment of Stone Crabs in the Eastern Gulf of Mexico

et al. 2019

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Accurate estimates of reproductive potential are a key component of any stock assessment. Multiple factors influencing the variability in batch fecundity of stone crabs Menippe spp. across the Florida fishery were quantified with a negative binomial regression model. Stone crabs were collected bimonthly from Cedar Key, Tampa Bay, Pavilion Key, and Sawyer Key from April 2013 through April 2015 for fecundity analysis. Batch fecundity (number of eggs per clutch) was estimated by using dry weights. Modeling results revealed that fecundity was strongly and positively related to carapace width and highly variable among locations, months, and years. Batch fecundity was lowest in spring and winter and highest in July and August, which agreed with the general understanding of seasonal patterns in crustacean reproductive cycles. Additionally, batch fecundity was 39% lower for crabs with no claws, indicating that claw removal by the fishery negatively affects reproductive output. Comparisons of estimates from a 1993–1995 fecundity study in Tampa Bay indicated that there was little difference in stone crab fecundity between individuals collected in 1993 and those collected in 2013. But this observed temporal pattern represents observations from only a small portion of the fished population and so may not fully reflect the temporal changes in fecundity occurring throughout the fishery. The present study quantified the spatial and temporal factors influencing variability in stone crab fecundity throughout the fished population of Florida. We hypothesize that spatial differences in food quality, food quantity, and fishing effort may be important drivers of variability in stone crab fecundity. Given the intense harvest and variability in reproductive output, further work should be dedicated to identifying critical spawning and recruitment areas, as well as assessments of their connectivity.

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“…; Graham et al. ). Changes during brooding significantly affect the accuracy of fecundity estimates.…”

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 97%

mentioning

confidence: 99%

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Fecundity Assessment of Stone Crabs in the Eastern Gulf of Mexico

et al. 2019

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“…Blue crabs spawn over several months from April to November, primarily in June through August, with larger females having several batches of eggs per season (Dickinson et al 2006, Graham et al 2012. When spawning, females move into offshore waters of higher salinity when a corresponding pattern of older individuals are observed offshore (Dickinson et al 2006).…”

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confidence: 99%

Feeding ecology of three coastal shark species in the northwest Gulf of Mexico

Plumlee¹,

Wells²

2016

Mar. Ecol. Prog. Ser.

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The feeding ecology of 3 coastal shark species -Atlantic sharpnose Rhizoprionodon terraenovae, bonnethead Sphyrna tiburo, and blacktip Carcharhinus limbatus shark -was examined in the northwest Gulf of Mexico (GOM). A total of 601 sharks (305 Atlantic sharpnose, 239 bonnethead, and 57 blacktip) were collected over 2 yr from recreational anglers in Galveston, TX. All individuals had stomach contents examined and a subset (50 Atlantic sharpnose, 50 bonnethead, and 36 blacktip sharks) was analyzed for stable isotopes (carbon, nitrogen, and sulfur) in muscle tissue, revealing short-term and long-term feeding strategies. Both blacktip and Atlantic sharpnose shark stomach contents consisted of teleost fishes with percent index of relative importance (%IRI) of 98.95 and 91.16, respectively, whereas bonnethead diets were dominated by crustaceans (%IRI = 87.20). Stable isotope analysis revealed bonnetheads had higher mean carbon (δ 13 C) and lower sulfur (δ 34 S) values, indicating inshore feeding and a preference for benthic invertebrates, respectively. Atlantic sharpnose and blacktip sharks were shown to feed on similar prey using stomach content analysis, yet Atlantic sharpnose sharks had a broader diet, including cephalopods and crustaceans in addition to teleost fishes. Differences were further established using nitrogen (δ 15 N) values, which were significantly lower for Atlantic sharpnose than blacktip sharks. Collectively, stomach contents and stable isotope analyses supported different feeding strategies of 3 common shark species. δ 34 S appeared to serve as a natural tracer, distinguishing benthic versus pelagic feeding patterns in elasmobranchs. This study provides important ecosystem-based feeding information of upper trophic-level predators in coastal waters of the northwestern GOM.

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Structural specialties, curiosities, and record‐breaking features of crustacean reproduction

Vogt

2016

Journal of Morphology

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Crustaceans are a morphologically, physiologically, and ecologically highly diverse animal group and correspondingly diverse are their reproductive characteristics. They have evolved structural specialties with respect to penis construction, sperm form, sperm storage, fertilization, and brood care. Unique in the animal kingdom are safety lines that safeguard hatching and first molting. Further curiosities are dwarf males in parasitic and sessile crustaceans and bacteria-induced feminization and gigantism of crustacean hosts. Record-breaking features are relative penis length, sperm size, clutch size, chromosome number, viability of dormant eggs, and fossil ages of penis, sperm, and brooded embryos. These examples from a single invertebrate subphylum and a single life history aspect illustrate that morphological solutions to functional requirements can be as spectacular as behavioral adaptations. They may provide valuable sources for comparative morphologists, ecologists, evolutionary biologists, and applied biologists to advance topical issues such as sperm competition, posthumous paternity, evolution of brood care, adaptation to freshwater, infectious feminization, sustainable male-based fishery, maintenance of genetic diversity under conditions of limited mating opportunity, and long-term impact of pollution on genotype and phenotype. J. Morphol. 277:1399-1422, 2016. © 2016 Wiley Periodicals, Inc.

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Fecundity and Egg Diameter of Primiparous and Multiparous Blue Crab Callinectes sapidus (Brachyura: Portunidae) in Mississippi Waters

Cited by 31 publications

References 39 publications

Fecundity Assessment of Stone Crabs in the Eastern Gulf of Mexico

Fecundity Assessment of Stone Crabs in the Eastern Gulf of Mexico

Feeding ecology of three coastal shark species in the northwest Gulf of Mexico

Structural specialties, curiosities, and record‐breaking features of crustacean reproduction

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